WO2015007427A1 - Wässrige dispersion eines mischpolymerisats - Google Patents
Wässrige dispersion eines mischpolymerisats Download PDFInfo
- Publication number
- WO2015007427A1 WO2015007427A1 PCT/EP2014/061551 EP2014061551W WO2015007427A1 WO 2015007427 A1 WO2015007427 A1 WO 2015007427A1 EP 2014061551 W EP2014061551 W EP 2014061551W WO 2015007427 A1 WO2015007427 A1 WO 2015007427A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- unsaturated monomers
- olefinically unsaturated
- aqueous dispersion
- mixture
- Prior art date
Links
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- 239000004408 titanium dioxide Substances 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 150000004072 triols Chemical class 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000000214 vapour pressure osmometry Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/53—Base coat plus clear coat type
- B05D7/532—Base coat plus clear coat type the two layers being cured or baked together, i.e. wet on wet
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/067—Polyurethanes; Polyureas
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4288—Polycondensates having carboxylic or carbonic ester groups in the main chain modified by higher fatty oils or their acids or by resin acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/6692—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/34
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
- C08G18/7628—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring containing at least one isocyanate or isothiocyanate group linked to the aromatic ring by means of an aliphatic group
- C08G18/765—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring containing at least one isocyanate or isothiocyanate group linked to the aromatic ring by means of an aliphatic group alpha, alpha, alpha', alpha', -tetraalkylxylylene diisocyanate or homologues substituted on the aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/81—Unsaturated isocyanates or isothiocyanates
- C08G18/8108—Unsaturated isocyanates or isothiocyanates having only one isocyanate or isothiocyanate group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/81—Unsaturated isocyanates or isothiocyanates
- C08G18/8141—Unsaturated isocyanates or isothiocyanates masked
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
Definitions
- the present invention relates to aqueous dispersions of copolymers, as well as their preparation and use, in particular in the field of automotive painting.
- EP 1 218 434 B1 discloses a graft copolymer based on polyurethane and its use for the production of coating materials, adhesives and sealants.
- EP 1 185 568 B1 and EP 1 173 491 B1 describe copolymers having a core-shell structure whose exterior is completely crosslinked, the core consisting of polyacrylate and the shell being made of polyurethane.
- the document EP 1 330 480 B1 describes copolymers in which the core consists of sulfide-containing polyurethanes and the shell of polyacrylate.
- copolymers known from the prior art are present as an aqueous dispersion and can be used for the preparation of aqueous coating materials, in particular for aqueous basecoat materials.
- aqueous basecoats can be used in the so-called basecoat / clearcoat process, a wet-in-wet process for the color and / or effect layer of a multicoat system.
- the known methods are in need of improvement, in particular with regard to the appearance of pinholes which are visible as the smallest holes in the clearcoat and basecoat layer.
- the abrasive tape coverage and multi-coat adhesion are not sufficient with coatings known in the art.
- the object underlying the present invention is therefore to provide an aqueous dispersion of a copolymer of the type described above, which can be used for the binder of the color and / or effect layer of a multi-layer coating, which is improved over the prior art.
- the pinhole limit is the dry layer thickness of the basecoat layer from which pinholes occur.
- the mixture of olefinically unsaturated monomers contains at least one poly olefinically unsaturated monomer
- the invention also relates to a process for the preparation of the dispersions of the invention, the use of said aqueous dispersion in paints, in particular basecoats, aqueous basecoats containing the abovementioned dispersions, and a process for the preparation of multilayer coatings.
- Pinholes are the smallest holes in the clear and basecoat layers that are visible in the finished coating. They are among the most common surface defects in spray paints.
- the designated in the following description and patent examples as pinholes defects are characterized by funnel-shaped, continuing in cylindrical tubes holes on the order of an impression of a needle tip, which a mean diameter of the funnel opening of about 300 to 700 ⁇ and a mean tube diameter of about. 15 to 60 ⁇ have, and pass through clear and base coat layer to the underlying layer. They can be the result of escaping gases, such as air bubbles or vaporizing liquids.
- (meth) acrylate is intended to mean both acrylate and methacrylate below.
- a copolymer according to the present invention refers to polymer particles which are composed of different polymers. It expressly includes both polymers which are covalently bonded to each other, as well as those in which the various polymers are bonded by adhesion to each other. Combinations of both types of binding are also covered by this definition.
- the dispersions of the invention and the process for the preparation of these same dispersions are characterized by their production steps.
- an aqueous dispersion of a polyurethane resin is introduced.
- Suitable saturated or unsaturated polyurethane resins are described, for example, in
- the aliphatic, cycloaliphatic, aliphatic-cycloaliphatic, aromatic, aliphatic-aromatic and / or cycloaliphatic-aromatic polyisocyanates known to those skilled in the art are preferably used. Particularly preferred are aliphatic and aliphatic cycloaliphatic polyurethane resins.
- the alcohol component for the preparation of the polyurethane resins it is preferred to use the saturated and unsaturated polyols known to those skilled in the art and also, if appropriate, in minor amounts also monoalcohols.
- diols and optionally minor amounts of triols are used to introduce branching.
- suitable polyols are saturated or olefinically unsaturated polyester polyols and / or polyether polyols.
- the polyols used are polyester polyols, in particular those having a number average molecular weight of from 400 to 5000 g / mol (measured by means of vapor pressure osmometry)
- the polyurethane introduced in aqueous dispersion is a hydrophilically stabilized polyurethane.
- the polyurethane resin may contain certain ionic groups and / or groups that can be converted into ionic groups (potentially ionic groups).
- Such polyurethane resins are referred to in the context of the present invention as ionically hydrophilically stabilized polyurethane resins.
- nonionic hydrophilic modifying groups are included in the context of the present invention.
- the ionically hydrophilically stabilized polyurethanes are preferred.
- the modifying groups are either um
- nonionic hydrophilic groups nonionic modification
- the functional groups for cationic modification are, for example, primary, secondary and / or tertiary amino groups, secondary sulfide groups and / or tertiary phosphine groups, especially tertiary amino groups and secondary sulfide groups (functional groups neutralized by neutralizing agents and / or Quaternizing agents can be converted into cationic groups).
- cationic groups prepared from the abovementioned functional groups using neutralizing agents and / or quaternizing agents known to those skilled in the art, such as primary, secondary, tertiary and / or quaternary ammonium groups, tertiary sulfonium groups and / or quaternary phosphonium groups, in particular quaternary ammonium groups and tertiary sulfonium groups ,
- the functional groups for anionic modification are, for example, carboxylic acid, sulfonic acid and / or phosphonic acid groups, in particular carboxylic acid groups (functional groups which can be converted into anionic groups by neutralizing agents), as well as from the abovementioned functional groups using the skilled person anionic groups prepared such as carboxylate, sulfonate and / or phosphonate groups.
- the functional groups for nonionic hydrophilic modification are preferably poly (oxyalkylene) groups, in particular poly (oxyethylene) groups.
- the ionic hydrophilic modifications may be introduced into the polyurethane resin by monomers containing the ionic or potentially ionic groups.
- the nonionic modifications are introduced, for example, by the incorporation of poly (ethylene oxide) polymers as lateral or terminal groups of the polyurethane molecules.
- the hydrophilic modifications are introduced, for example, via compounds which contain at least one isocyanate-reactive group, preferably at least one hydroxy group.
- To introduce the ionic modification it is possible to use monomers which contain at least one hydroxy group in addition to the modifying groups.
- At least one solvent is added to the initially charged polyurethane dispersion wherein the solvent is miscible in any proportion with water and in any proportion with the mixture of olefinically unsaturated monomers.
- Particularly suitable solvents are N-methylpyrrolidone, N-ethylpyrrolidone and ether alcohols, in particular methoxypropanol.
- a polymerization of a mixture of olefinically unsaturated monomers in the presence of the polyurethane is carried out by the methods of so-called free-radical emulsion polymerizations in the presence of at least one polymerization initiator.
- the polymerization initiator used must be a water-soluble initiator.
- suitable initiators are potassium, sodium or ammonium peroxodisulfate, and hydrogen peroxide, tert-butyl hydroperoxide, 2,2'-azobis (2-amidoisopropane) dihydrochloride, 2,2'-azobis (N, N'-dimethyleneisobutyramidine) dihydrochloride or 2,2'-azobis (4-cyanopentanoic acid Initiators are used either alone or in mixture, e.g. B. mixtures of hydrogen peroxide and sodium persulfate.
- the known redox initiator systems can also be used as polymerization initiators.
- Such redox initiator systems contain at least one peroxide-containing compound in combination with a redox coinitiator z.
- sulfur compounds such as bisulfites, sulfites, thiosulfates, dithionites or tetrathionates of alkali metals and ammonium compounds, sodium hydroxymethanesulfinate dihydrate and / or thiourea. So you can use combinations of Peroxodisulfaten with Alkalimetalloder or Ammoniumhydrogensulfiten, z. For example, ammonium peroxydisulfate and ammonium disulfite.
- the weight ratio of peroxide-containing compounds to the redox coinitiators is preferably 50: 1 to 0.05: 1.
- transition metal catalysts can be used in addition, such.
- iron, nickel, cobalt, manganese, copper, vanadium, or chromium salts such as ferrous sulfate, cobalt II chloride, nickel-ll sulfate, copper-l-chloride, manganese ll acetate, vanadium III acetate, manganese chloride.
- these transition metal salts are usually used in amounts of from 0.1 to 1000 ppm. So you can use combinations of hydrogen peroxide with iron-Il salts, such as 0.5 to 30% hydrogen peroxide and 0.1 to 500 ppm Mohr's salt.
- the initiators are preferably used in an amount of 0.05 to 20 wt .-%, preferably 0.05 to 10, particularly preferably from 0.1 to 5 wt .-% based on the total weight of the olefinically unsaturated monomers.
- water-soluble initiator implies that olefinically unsaturated monomers added to the initially charged aqueous dispersion can immediately react to form oligomers. These oligomers have less tendency to penetrate into the polyurethane particles of the initially introduced dispersion than the smaller monomers.
- the polymerization is conveniently carried out at a temperature of 0 to 160 ° C, preferably 60 to 95 ° C. In this case, preference is given to operating under exclusion of oxygen, preferably in a stream of nitrogen. In general, the polymerization is carried out at atmospheric pressure, but the use of lower pressures or higher pressures is possible, especially when polymerization temperatures are used which are above the boiling point of the monomers and / or solvents.
- the polymers according to the invention are prepared by free-radical aqueous emulsion polymerization, wherein surfactants or protective colloids can be added to the reaction medium.
- surfactants or protective colloids can be added to the reaction medium.
- suitable emulsifiers and protective colloids can be found for example in Houben Weyl, Methods of Organic Chemistry, Volume XIV / 1 Macromolecular substances, Georg Thieme Verlag, Stuttgart 1961, S 41 1 ff.
- aqueous dispersion Important for the preparation of the aqueous dispersion according to the invention is the control of the conditions of the polymerization reaction of the mixture of olefinically unsaturated monomers in the presence of the polyurethane. This is carried out in a manner known as “starving feed” (also known as “starve feed”, “starve fed” or “starved feed” polymerization).
- an emulsion polymerization is considered in which the content of residual monomers in the reaction solution is minimized during the reaction time, i. the addition of the olefinically unsaturated monomers is carried out so that in the reaction solution, a concentration of 6.0 wt .-%, preferably 5.0 wt .-%, particularly preferably 4.0 wt .-%, each based on the total amount of olefinic unsaturated monomers, is not exceeded during the entire reaction time.
- the concentration of the monomers in the reaction solution can be determined by gas chromatography.
- the concentration of monomers in the reaction solution can be controlled in various ways.
- One way to keep the concentration of free monomers low is to choose the dosing rate of the mixture of olefinically unsaturated monomers very low. If the addition rate is so low that all monomers can react as quickly as they are in the reaction solution, it can be ensured that the concentration of the free monomers is minimized.
- the reaction conditions are preferably to be selected so that the initiator feed is started even before the beginning of the metering of the olefinically unsaturated monomers.
- the dosage is started at least 5 minutes before, more preferably at least 10 minutes before.
- at least 10% by weight of the initiator particularly preferably at least 20% by weight, very preferably at least 30% by weight of the initiator, in each case based on the total amount of initiator, is added before starting the metering of the olefinically unsaturated monomers.
- the amount of initiator is an important factor for the sufficient presence of radicals in the reaction solution.
- the amount of initiator should be chosen so that sufficient free radicals are available at all times so that the added monomers can react. If the amount of initiator is increased, even larger amounts of monomers can be reacted at the same time. Another factor which determines the reaction rate is the structure of the monomers.
- the control of the concentration of the free monomers can thus be controlled by the interaction of amount of initiator, rate of initiator addition, rate of monomer addition and by the choice of monomers. Both the slowing down of the dosage, as well as the increase in the amount of initiator, as well as the early start with the addition of the initiator aim to keep the concentration of the free monomers below the limits mentioned above. At any point in the reaction, the concentration of the free monomers can be determined by gas chromatography.
- Typical parameters for the determination are the following: 50m silica capillary column with polyethylene glycol phase or 50m silica capillary column with polydimethylsiloxane phase, carrier gas helium, split injector 150 ° C, oven temperature 40 to 220 ° C, flame ionization detector, detector temperature 275 ° C, internal standard isobutyl acrylate.
- the above parameters can be used to control the reaction.
- the metering rate of the monomers can be reduced or the amount of initiator can be increased.
- Suitable olefinically unsaturated monomers may be mono- or poly-olefinically unsaturated.
- Suitable monoolefinically unsaturated monomers include (meth) acrylate-based mono-olefinically unsaturated monomers, vinylic, monoolefinically unsaturated monomers, alpha-beta unsaturated carboxylic acids, and allyl compounds.
- the (meth) acrylate-based, mono-olefinically unsaturated monomers may be, for example, (meth) acrylic acid and esters, nitriles, or amides of (meth) acrylic acid.
- esters of (meth) acrylic acid with a radical R, which is not olefinically unsaturated.
- the radical R may be aliphatic or aromatic.
- the radical R is preferably aliphatic.
- the radical R may be, for example, an alkyl radical or contain heteroatoms. Examples of radicals R which contain heteroatoms are ethers.
- the radical R is preferably an alkyl radical.
- R is an alkyl radical
- it may be a linear, branched or cyclic alkyl radical. In all three cases, these may be unsubstituted or functional groups substituted alkyl radicals.
- the alkyl radical preferably has 1 to 20, particularly preferably 1 to 10, carbon atoms.
- Particularly preferred suitable monounsaturated esters of (meth) acrylic acid having an unsubstituted alkyl radical are methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl ( meth) acrylate, tert-butyl (meth) acrylate, amyl (meth) acrylate, hexyl (meth) acrylate, ethylhexyl (meth) acrylate, 3,3,5-trimethylhexyl (meth) acrylate, stearyl (meth) acrylate , Lauryl (meth) acrylate, cycloalkyl (meth) acrylates, such as cyclopentyl (meth) acrylate, isobornyl (meth) acrylate and cyclohexyl (me
- Suitable monounsaturated esters of (meth) acrylic acid with a substituted alkyl radical may preferably be substituted by one or more hydroxyl groups.
- Particularly preferred suitable monounsaturated esters of (meth) acrylic acid with an alkyl radical substituted by one or more hydroxyl groups are 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 3-hydroxybutyl (meth ) acrylate and 4-hydroxybutyl (meth) acrylate.
- the vinylic, monounsaturated monomers may be monomers having a radical R 'on the vinyl group which is not olefinically unsaturated.
- the radical R ' may be aliphatic or aromatic, with aromatic radicals being preferred.
- the radical R ' may be a hydrocarbon radical or contain heteroatoms.
- Examples of radicals R 'which contain heteroatoms are ethers, esters, amides, nitriles and heterocycles.
- the radical R ' is preferably a hydrocarbon radical.
- R ' is a hydrocarbon radical
- this may be substituted or unsubstituted with heteroatoms, unsubstituted radicals being preferred.
- the radical R ' is preferably an aromatic hydrocarbon radical.
- Particularly preferred vinylic, olefinically unsaturated monomers are vinylaromatic hydrocarbons, in particular vinyltoluene, alpha-methylstyrene and in particular styrene.
- olefinically unsaturated monomers such as acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, N-dimethylacrylamide, vinyl acetate, vinyl propionate, vinyl chloride, N-vinylpyrrolidone, N-vinylcaprolactam, N-vinylformamide, N-vinylimidazole and N-vinyl-2 -Methylimidazoline preferred.
- Suitable multiply olefinically unsaturated monomers include esters of (meth) acrylic acid with an olefinically unsaturated radical R "and allyl ethers of mono- or polyhydric alcohols
- the radical R" may be an allyl radical or a (meth) acrylic acid radical.
- Preferred poly olefinically unsaturated monomers include ethylene glycol di (meth) acrylate, 1,2-propylene glycol di (meth) acrylate, 2,2-
- preferred poly olefinically unsaturated compounds include acrylic and methacrylic acid esters of alcohols having more than two OH groups, such as trimethylolpropane tri (meth) acrylate or glycerol tri (meth) acrylate, but also trimethylolpropane di (meth) acrylate monoallyl ether, trimethylolpropane (meth) acrylate diallyl ether .
- Allyl methacrylate is particularly preferably used.
- the mixture of olefinically unsaturated monomers contains at least one poly olefinically unsaturated monomer.
- the mixture of olefinically unsaturated monomers also contains one or more monounsaturated esters of (meth) acrylic acid with an unsubstituted alkyl radical.
- the mixture of the olefinically unsaturated monomers preferably contains from 0.1 to 6.0 mol%, particularly preferably from 0.1 to 2.0 mol%, very particularly preferably from 0.1 to 1.0 mol%, of multiply olefinically unsaturated monomers.
- the mixture of the olefinically unsaturated monomers preferably contains 0.1 to 6.0 mol%, particularly preferably 0.1 to 2.0 mol%, very particularly preferably 0.1 to 2.0 mol% allyl methacrylate. Apart from allyl methacrylate, no further poly olefinically unsaturated monomers are particularly preferably contained in the mixture.
- the mixture of olefinically unsaturated monomers preferably contains ⁇ 10.0% by weight, more preferably ⁇ 5.0% by weight, of vinylaromatic hydrocarbons, based on the total amount of olefinically unsaturated monomers. Most preferably, no vinyl aromatic hydrocarbons are included in the mixture of olefinically unsaturated monomers.
- the mixture of olefinically unsaturated monomers comprises:
- At least one solvent is added to the mixture of olefinically unsaturated monomers, the solvent being miscible in any proportion with water and in any proportion with the mixture of olefinically unsaturated monomers.
- Particularly suitable solvents are N-methylpyrrolidone, N-ethylpyrrolidone and ether alcohols, in particular methoxypropanol.
- the copolymers in the aqueous dispersion according to the invention have a core-shell structure which can be achieved by the stated production process.
- the core-shell structure is characterized by a core comprising at least one polyurethane, and a shell containing at least polymer which has been obtained by polymerization of olefinically unsaturated monomers.
- the described core-shell construction is achieved by the special reaction conditions of the starving polymerization. There are never any major amounts of olefinically unsaturated monomers present in the presence of the polyurethane present during the entire reaction time, which could penetrate into the polyurethane particle. By always present during the monomer addition in the aqueous phase radicals, which provides the water-soluble initiator, oligomers are formed immediately upon addition, which can not penetrate into the polyurethane. These then polymerize on the surface of the polyurethane.
- the weight ratio of core to shell is 80:20 to 20:80, more preferably 60:40 to 40:60.
- the microstructure of the copolymers can be examined by transmission electron microscopy: For this purpose, structures must be incorporated into the polymer, which can be made available for contrasting, preferably by heavy metal compounds. This is preferably done during the radical copolymerization by the incorporation of polydiene sequences into the copolymer, preferably isoprene or butadiene being copolymerized with olefinically unsaturated compounds and allyl compounds.
- a polymer film must be formed for examination, which can be examined after contrasting in an osmium or ruthenium tetroxide enriched atmosphere electron microscopy.
- the copolymers have a particle size (z-average) of 60 to 130, particularly preferably from 70 to 15 nm, measured by means of photon correlation spectroscopy with a Malvern Nano S90 (Malvern Instruments) at 25 ⁇ 1 ° C.
- the device equipped with a 4mW He-Ne laser at a wavelength of 633nm, covers a size range from 1 to 3000 nm.
- the copolymers can be crosslinked.
- the gel fraction of the aqueous dispersion according to the invention is preferably 40 to 97 wt .-%, particularly preferably 75 to 90 wt .-%, each based on the solids of the dispersion.
- the insoluble portion is separated and dried at 50 ° C for four hours in a convection oven.
- the dried, insoluble fraction is weighed and the quotient with the total mass of the freeze-dried polymer is formed.
- the value obtained corresponds to the gel content.
- the weight average molecular weight of the copolymers is preferably 3 * 10 7 g / mol to 8.5 * 10 9 g / mol, wherein the weight average molecular weight can be determined with small angle laser light scattering.
- the acid number of the copolymers is 0 to 220 mg KOH / g of solid resin, preferably 0 to 40 mg KOH / g of solid resin, more preferably 0 to 25 mg KOH / g of solid resin.
- the OH number is less than 70, preferably less than 20 mg KOH / g of solid resin.
- the acid number can be determined in accordance with DIN EN ISO 21 14 in a homogeneous solution of THF / water (9 parts by volume of THF and 1 part by volume of distilled water) with ethanolic potassium hydroxide solution.
- the OH number can be modeled on R.-P. Krüger, R. Gnauck and R. Algeier, Plaste und Kautschuk, 20, 274 (1982), using acetic anhydride in the presence of 4-dimethylaminopyridine as a catalyst in a tetrahydrofuran (THF) / dimethylformamide (DMF) solution at room temperature the remaining excess of acetic anhydride is completely hydrolyzed after acetylation and the acetic acid is back titrated potentiometrically with alcoholic potassium hydroxide solution.
- THF tetrahydrofuran
- DMF dimethylformamide
- the present invention further relates to an aqueous basecoat containing a dispersion according to the invention.
- the aqueous basecoat generally contains coloring pigments and / or optically effecting pigments.
- Such color pigments and effect pigments are those skilled in the art, for example, in Römpp Lexikon coatings and printing inks, Georg Thieme Verlag, Stuttgart, New York, 1998, pages 176 and 451 described.
- Effect pigments are, for example, metallic effect pigments, such as, for example, aluminum pigments, gold bronzes, fire-colored bronzes and / or iron oxide pigments.
- Aluminum pigments, pearlescent pigments such as, for example, fish-silver, basic lead carbonate, bismuth oxychloride and / or metal oxide-mica pigments and / or other effect pigments such as micronised titanium dioxide, platelet-shaped graphite, platelet-shaped iron oxide, multi-layer effect pigments of PVD films and / or liquid crystal polymer pigments.
- the proportion of the pigments is preferably in the range from 1, 0 to 40.0 wt .-%, preferably 2.0 to 20.0 wt .-%, particularly preferably 5.0 to 15.0 wt .-%, based on the total weight of the pigmented aqueous basecoat.
- binders which are curable physically, thermally or thermally and with actinic radiation.
- the term "physical curing” means the formation of a film by the release of solvent from polymer solutions or polymer dispersions, usually without the need for crosslinking agents.
- thermal curing means the heat-initiated crosslinking of a lacquer layer in which either a separately present crosslinking agent or else self-crosslinking binders are applied in the underlying lacquer
- the crosslinking agent contains reactive functional groups which belong to the ones described in Usually, this is referred to in the art as extraneous crosslinking.
- the complementary reactive functional groups or autoreactive functional groups ie groups that react with groups of the same kind, already present in the binder molecules, are self-crosslinking binder before Examples of suitable complementary reactive functional groups and autoreactive functional groups are known from German patent application DE 199 30 665 A1, page 7, line 28 to page 9, lines 24.
- actinic radiation means electromagnetic radiation such as near infrared (NIR), UV radiation, in particular UV radiation, and corpuscular radiation such as electron radiation.
- NIR near infrared
- UV radiation in particular UV radiation
- corpuscular radiation such as electron radiation.
- UV radiation is usually initiated by free-radical or cationic photoinitiators.
- Basecoats which are curable thermally or thermally and with actinic radiation, that is to say by means of "dual-cure", are preferred in the present invention.
- basecoats which contain a polyurethane resin as binder and an aminoplast resin or a blocked or unblocked polyisocyanate, preferably an aminoplast, as crosslinking agent.
- aminoplast resins melamine resins are particularly preferred.
- a thickener is preferably included.
- Suitable thickeners are inorganic thickeners from the group of layered silicates. Particularly suitable are lithium aluminum-magnesium silicates.
- organic thickeners are preferably selected from the group consisting of (meth) acrylic acid (meth) acrylate copolymer thickeners, such as, for example, the commercial product Viscalex HV30 (Ciba, BASF) and polyurethane thickeners, such as, for example, the commercial product DSX® 1550 from Cognis.
- (meth) acrylic acid (meth) acrylate copolymer thickeners such as, for example, the commercial product Viscalex HV30 (Ciba, BASF)
- polyurethane thickeners such as, for example, the commercial product DSX® 1550 from Cognis.
- (meth) acrylic acid (meth) acrylate copolymer thickener those are mentioned which contain, in addition to acrylic acid and / or methacrylic acid, one or more acrylic acid esters (that is to say acrylates) and / or one or more methacrylic acid esters (that is to say methacrylates) in copolymerized form.
- the (meth) acrylic acid (meth) acrylate copolymer thickeners have in common that these in alkaline medium, that is at pH> 7, in particular> 7.5 by salt formation of acrylic acid and / or methacrylic acid, that is by the Formation of carboxylate groups show a strong increase in viscosity.
- (meth) acrylic acid esters which are formed from (meth) acrylic acid and a C 1 -C 6 -alkanol, the result is essentially non-associative (meth) acrylic acid (meth) acrylate copolymer thickener, such as, for example, the above called Viscalex HV30.
- ASE thickeners Alkali Soluble / Swellable Emulsion
- HASE thickeners Hydrophobically Modified Anionic Soluble Emulsions
- anionically soluble emulsion or dispersion hydrophobically modified anionically soluble emulsion or dispersion
- HASE thickeners have an essentially thickening associative effect.
- the usable (meth) acrylic acid (meth) acrylate copolymer thickeners are not suitable as binder resins due to their thickening properties, they therefore do not fall under the binders referred to as binders physically, thermally or thermally and actinically curable binders and are therefore explicitly different from the poly (meth) acrylate based binders which can be used in the basecoat composition compositions of the present invention.
- Polyurethane thickeners are the associative thickeners referred to in the literature as HEUR ("Hydrophobically Modified Ethylene Oxide Urethane Rheology Modifiers", hydrophobically modified ethylene oxide-urethane rheology additives), which are chemically non-ionic branched or unbranched block copolymers of polyethylene oxide.
- HEUR Hydrophobically Modified Ethylene Oxide Urethane Rheology Modifiers
- hydrophobically modified ethylene oxide-urethane rheology additives hydrophobically modified ethylene oxide-urethane rheology additives
- Chains (sometimes also polypropylene oxide chains) which are linked together via urethane bonds and which carry terminal long-chain alkyl or alkylene groups having 8 to 30 carbon atoms
- Typical alkyl groups are for example dodecyl or stearyl groups
- a typical alkenyl group is for example an oleyl group
- a typical Aryl group is the phenyl group
- a typical alkylated aryl group is, for example, a nonylphenyl group
- the polyurethane thickeners are not suitable as physically, thermally or thermally and physically because of their thickening properties and structure usable binder resins. They are thus explicitly different from the polyurethanes which can be used as binders in the basecoat compositions according to the invention.
- the aqueous basecoat may contain at least one additional additive.
- additives are residue-free or im Substantially residue-free, thermally decomposable salts, resins which are physically, thermally and / or with actinic radiation resins other than polyurethane resins, further crosslinking agents, organic solvents, reactive diluents, transparent pigments, fillers, molecularly soluble dyes, nanoparticles, light stabilizers, antioxidants, deaerating agents, emulsifiers, Slip additives, polymerization inhibitors, free radical polymerization initiators, adhesion promoters, leveling agents, film forming aids, sag-control agents (SCAs), flame retardants, corrosion inhibitors, waxes, siccatives, biocides and matting agents.
- SCAs sag-control agents
- Suitable additives of the aforementioned type are, for example, from the German patent application DE 199 48 004 A1, page 14, line 4, to page 17, line 5,
- the solids content of the basecoats used according to the invention may vary depending on the requirements of the individual case. In the first place, the solids content depends on the viscosity required for application, in particular spray application, so that it can be adjusted by the person skilled in the art on the basis of his general knowledge, if appropriate with the aid of less orienting tests.
- the solids content of the basecoats is preferably from 5 to 70% by weight, more preferably from 10 to 65% by weight and particularly preferably from 15 to 60% by weight.
- solids content is to be understood as meaning the proportion by weight which remains under evaporation as a residue under defined conditions.
- the solids are determined according to DIN EN ISO 3251 at 130 ° C, 60 min, weight 1, 0 g.
- the preparation of the basecoats used according to the invention can be carried out using the customary and known for the production of basecoats mixing methods and mixing units.
- the basecoats according to the invention can be used both as one-component (1K), two-component (2K) or multi-component (3K, 4K) systems. Preference is given to (1 K) systems.
- binders and crosslinkers are juxtaposed, i. in a component, before.
- the prerequisite for this is that the two constituents crosslink together only at higher temperatures and / or when exposed to actinic radiation.
- binders and crosslinking agents are present separately from one another in at least two components, which are combined only shortly before application. This form is chosen when the binder and crosslinking agent react with each other already at room temperature. Paints of this type are mainly used for coating thermally sensitive substrates, in particular in automotive refinish.
- the application of the pigmented aqueous basecoat material used according to the invention to a substrate can take place in the usual thicknesses within the automotive industry in the range of, for example, 5 to 100 micrometers, preferably 5 to 60 micrometers (layer thickness after baking process).
- the known methods such as spraying, knife coating, brushing, glazing, dipping, watering, trickling or rolling are used.
- spray application methods are used, such as compressed air spraying, airless spraying, high rotation, electrostatic spray application (ESTA), optionally combined with hot spray application such as hot air hot spraying.
- (1K) basecoats may be flashed off at room temperature for 1 to 60 minutes and subsequently preferably be dried at optionally slightly elevated temperatures of 30 to 80 ° C.
- flash drying and drying is to be understood to mean evaporation of organic solvents and / or water, as a result of which the paint is drier but not yet cured, or a fully crosslinked paint film is not yet formed.
- a commercially available clearcoat is also applied according to common methods, the dry film thicknesses again being in the common ranges, for example 5 to 100 micrometers.
- Such clearcoats are known to the person skilled in the art.
- the clearcoat After application of the clearcoat, it may be flashed off at room temperature for, for example, 1 to 60 minutes and, if appropriate, dried. Then the clearcoat is cured together with the applied pigmented basecoat. In this case, for example, crosslinking reactions take place, as a result of which a color and / or effect multilayer coating according to the invention is produced on a substrate.
- the curing is preferably carried out thermally or thermally and with actinic radiation at temperatures of 20 to 200 ° C.
- a further aspect of the present invention is a process for producing a color and / or effect multilayer coating in which
- step (a) a pigmented aqueous basecoat is used, wherein the basecoat contains a dispersion according to the invention.
- the aqueous basecoat according to the invention for the coating of automobile bodies and / or attachments of automobile bodies made of plastic can be used.
- hydroxyl number in the following examples was based on R.-P. Krüger, R. Gnauck and R. Algeier, Plaste und Kautschuk, 20, 274 (1982), using acetic anhydride in the presence of 4-dimethylaminopyridine as a catalyst in a tetrahydrofuran (THF) / dimethylformamide (DMF) solution at room temperature remaining excess of acetic anhydride after acetylation was completely hydrolyzed and the acetic acid was back titrated potentiometrically with alcoholic potassium hydroxide solution. 60 min acetylation times were sufficient in all cases to guarantee complete conversion.
- THF tetrahydrofuran
- DMF dimethylformamide
- the acid number in the following examples was determined on the basis of DIN EN ISO 21 14 in homogeneous solution of THF / water (9 parts by volume of THF and 1 part by volume of distilled water) with ethanolic potassium hydroxide solution Unless stated otherwise, solid content, hereinafter also referred to as solid content, in the following examples according to DIN EN ISO 3251 at 130 °; 60 min, weight 1, 0g, determined.
- M n The number-average molar mass (M n ) was in the following examples, unless otherwise stated, by means of a steam pressure osmometer type 10.00 (Knauer) of concentration series in toluene at 50 ° C according to E. Schröder, G. Müller, K.-F. Arndt, "Guidelines of Polymer Characterization", Akademie-Verlag, Berlin, pp. 47-54, 1982.
- a dispersion of an alpha-methylstyryl-containing polyurethane was prepared in accordance with the patent DE 19948004 B4, page 27, Example 1, "Preparation of a polyurethane (B) according to the invention", but the solid content of the resulting dispersion, only 29 instead of 35 wt Based on the adduct (B2), preparation example 1 mentioned in the patent DE 19948004 B4, an adduct with monoethanolamine and trimethylolpropane instead of diethanolamine was prepared:
- BASF SE BASF SE
- the resulting reaction mixture was stirred at 65 ° C until the isocyanate content of the solution had dropped to 1, 0 wt .-%. Now 22.2 wt .-% diethanolamine (BASF SE) were added and the content of isocyanate groups followed until no more free isocyanate groups were detectable.
- the resulting, dissolved polyurethane was admixed with 139.7 parts by weight of methoxypropanol and 43.3 parts by weight of triethylamine (BASF SE). Thirty minutes after the addition of the amine, the temperature of the solution was lowered to 60 ° C, followed by adding 1981 parts by weight of deionized water while stirring for 30 minutes. From the resulting dispersion, the methyl ethyl ketone was at 60 ° C distilled off under vacuum. Thereafter, any solvent and water losses were compensated.
- the resulting dispersion of an alpha-methylstyryl-containing polyurethane had a solids content of 29.0% by weight, the acid number was 34.0 mg KOH / g solids content and the pH was 7.0 (measured at 23 ° C ).
- a polyurethane dispersion was prepared, which, however, has no alpha-methylstyryl groups, but isotridecyl groups.
- the resulting reaction mixture was stirred at 70 ° C until the isocyanate content of the solution had dropped to 0.8% by weight. Now 19.6 wt .-% diethanolamine (BASF SE) were added and the content of isocyanate groups followed until no more free isocyanate groups were detectable.
- the resulting, dissolved polyurethane was admixed with 123 parts by weight of methoxypropanol and 43.8 parts by weight of triethylamine (from BASF SE). Thirty minutes after the addition of the amine, the temperature of the solution was lowered to 60 ° C, followed by the addition of parts by weight of deionized water while stirring for 30 minutes in 2009. From the resulting dispersion, the methyl ethyl ketone was distilled off at 60 ° C under vacuum. Thereafter, any solvent and water losses were compensated.
- the polyurethane dispersion thus obtained had a solids content of 29.0% by weight, the acid number was 34.1 mg KOH / g solids content and the pH was 7.0 (measured at 23 ° C).
- TXDI® m-tetramethylxylene diisocyanate
- Cytec m-tetramethylxylene diisocyanate
- the reaction mixture was slowly heated to 80 ° C. with stirring and kept until the isocyanate content of the solution was 1.8% by weight and constant.
- BASF SE trimethylolpropane
- 26.1 parts by weight of methyl ethyl ketone were added rapidly to the reaction mixture.
- the resulting reaction mixture was stirred at 80 ° C until no more free isocyanate groups were detectable.
- the resulting dissolved polyurethane was 41.2 parts by weight Added dimethyl ethanolamine and stirred for a further 60 minutes. Thereafter, the reaction mixture was completely transferred during 30 minutes in a second reaction vessel with continuous stirring, in which 1732 parts by weight of deionized water had already been submitted, which was previously heated to 70 ° C. From the resulting dispersion, the methyl ethyl ketone was distilled off at 60 ° C under vacuum. Thereafter, any water losses were compensated.
- the polyurethane dispersion thus obtained had a solids content of 38.0% by weight, the acid number was 43.0 mg KOH / g solids content and the pH at 6.2 (measured at 23 ° C).
- the dispersion of a sulfur-containing polyurethane obtained in this way had a solids content of 27.3% by weight, the acid number was 34.4 mg KOH / g solids content, the degree of neutralization was 84% and the pH was 7.1 (measured at 23 ° C).
- Example D-A1 Preparation of a Primary Dispersion of a Polyesterurethane-Polyacrylate Copolymer starting from an unsaturated polyester urethane with alpha-methylstyryl groups
- Example 2 Based on the patent DE 19948004 B4, page 27, Example 2, "The preparation of the primary dispersion of a copolymer of the invention 1" and patent EP1218434B1, page 24, Example 2, "The preparation of the primary dispersion of a graft copolymer 1 according to the invention” under nitrogen atmosphere 1937, 8 parts by weight of the polyurethane dispersion according to Example DP-1 diluted with 856.9 parts by weight of deionized water and heated to 85 ° C.
- GC gas chromatography
- the resulting primary dispersion of the copolymer had, as described in the original example, a very good storage stability.
- Their solids content was 32.5 wt .-%, the acid number at 18.3 mg KOH / g solids content and its pH at 7.2 (measured at 23 ° C).
- the particle size (z-average) by means of photocorrelation spectroscopy was 104 nm.
- GC gas chromatography
- the gel fraction was determined gravimetrically after extraction of the freeze-dried polymer by means of tetrahydrofuran at 71.5% by weight.
- the insoluble fraction (gel fraction) was isolated, dried for 4 hours at 50 ° C in a convection oven, and then weighed back.
- a primary dispersion was prepared by exchanging the polyurethane dispersion with alpha-methylstyryl groups according to preparation example D-P1 for weight against the polyurethane dispersion with isotridecyl groups according to preparation example D-P2.
- the content of free monomers was determined by gas chromatography analogously to Example D-A1 at 30-minute intervals, the maximum total monomer content after 30 minutes being determined based on dispersion at 2.0% by weight (12.4 Wt .-% based on vinyl monomer).
- the resulting primary dispersion of the copolymer had a very good storage stability.
- Their solids content was 32.2 wt .-%, the acid number at 18.1 mg KOH / g solids content and its pH at 7.3 (measured at 23 ° C).
- the Particle size (z-average) by means of photocorrelation spectroscopy was 12 nm.
- a content of 5.7% by weight of methoxypropanol and 1.2% by weight of N-methylpyrrolidone was determined by means of gas chromatography.
- the gel fraction was determined analogously to example D-A1 gravimetrically after extraction by means of tetrahydrofuran with 70.2% by weight.
- the mixture was stirred into a mixture of 145.2 parts by weight of styrene, 145.2 parts by weight of methyl methacrylate, 108.7 parts by weight of n-butyl acrylate, 108.7 parts by weight of hydroxyethyl methacrylate and 54.3 parts by weight of isoprene for 3.5 hours under 3 bar Nitrogen pressure evenly added.
- a solution of 8.4 parts by weight of tert-butyl peroxyethylhexanoate in 134.9 parts by weight of methoxypropanol was added over four hours.
- the resulting reaction mixture was further stirred at 85 ° C until all monomers had reacted.
- the resulting primary dispersion had a very good storage stability.
- Their solids content was 32.3 wt .-%, the acid number at 18.3 mg KOH / g and its pH at 7.2 (measured at 23 ° C).
- the particle size (z-average) by means of photocorrelation spectroscopy was 15 nm.
- a content of 6.0% by weight of methoxypropanol and 1.7% by weight of N-methylpyrrolidone was determined by means of gas chromatography.
- the gel fraction was determined analogously to example D-A1 gravimetrically after extraction by means of tetrahydrofuran with 70.8% by weight.
- the content of free monomers was determined by gas chromatography at 30-minute intervals analogously to example D-A1, the maximum total monomer content being determined after 30 minutes with dispersion at 1.0% by weight (7.1 Wt .-% based on vinyl monomer).
- the resulting primary dispersion of the copolymer had, like the styrene-containing dispersion, a very good storage stability.
- Their solids content was adjusted to 28.0 wt .-%, the acid number at 18.1 mg KOH / g solids content and its pH at 7.2 (measured at 23 ° C).
- the particle size (z-means) by means of Photocorrelation spectroscopy was 102 nm.
- Analogous to example D-A1 a content of 2.8% by weight of methoxypropanol and 5.8% by weight of N-methylpyrrolidone was determined by means of gas chromatography.
- the gel fraction was determined analogously to example D-A1 gravimetrically after extraction by means of tetrahydrofuran with 72.0% by weight.
- Example 2 page 16, "The Preparation of the Primary Dispersion of a Polymer Mixture According to the Invention" under a nitrogen atmosphere, 2285.8 parts by weight of the polyurethane dispersion according to Example DP-4 were initially charged and heated to 82 ° C.
- the free monomer content was determined analogously to, for example, 30 minutes D-A1 determined by gas chromatography, wherein after 30 min was the highest total monomer content based on a 41, 9 wt .-% dispersion with 1, 6 wt .-% was determined (7.6 wt .-% based on vinyl monomer).
- the acid number was 19.6 mg KOH / g solids content and the pH of the dispersion was 7.4 (measured at 23 ° C).
- the degree of neutralization was 80.2%.
- the particle size (z-average) by means of photocorrelation spectroscopy was 83 nm.
- the resulting dispersion contained no solvent.
- the gel fraction was determined analogously to example D-A1 gravimetrically after extraction by means of tetrahydrofuran with 0.0% by weight.
- Example D-A5 Analogously to Example D-A5, a copolymer was prepared.
- the acid number was 18.5 mg KOH / g solids and its pH was 7.2 (measured at 23 ° C).
- the degree of neutralization was 80.0%.
- the particle size (z-average) was 81 nm by means of photocorrelation spectroscopy.
- the content of free monomers was determined by gas chromatography at 30-minute intervals analogously to example D-A1, the maximum total monomer content being determined after 30 minutes based on dispersion at 0.5% by weight (3.1 Wt .-% based on vinyl monomer).
- reaction mixture was stirred at 80 ° C for a further hour and then cooled to room temperature.
- the resulting primary dispersion of the copolymer had a very good storage stability.
- Their solids content was 32.5 wt .-%, the acid number at 18.8 mg KOH / g solids content and its pH at 7.0.
- the particle size (z-average) by means of photocorrelation spectroscopy was 96 nm.
- a content of 2.7% by weight of methoxypropanol and 5.7% by weight of N-methylpyrrolidone was determined by means of gas chromatography.
- the gel fraction was determined analogously to example D-A1 gravimetrically after extraction by means of tetrahydrofuran with 80.3% by weight.
- Polyesterurethane-polyacrylate copolymer starting from a saturated polyester urethane with Isotridecyl groups
- a primary dispersion was prepared by replacing the weight of the polyurethane dispersion with alpha-methylstyryl groups according to preparation example D-P1 by the polyurethane dispersion with isotridecyl groups according to preparation example D-P2.
- the content of free monomers was determined by gas chromatography at 30-minute intervals analogously to example D-A1, the maximum total monomer content being determined after 30 minutes based on dispersion at 0.5% by weight (3.1 Wt .-% based on vinyl monomer).
- the resulting primary dispersion of the copolymer had a very good storage stability.
- Their solids content was 32.4 wt .-%, the acid number at 18.4 mg KOH / g solids content and its pH at 6.9 (measured at 23 ° C).
- the particle size (z-average) by means of photocorrelation spectroscopy was 102 nm.
- a content of 2.4% by weight of methoxypropanol and 5.1% by weight of N-methylpyrrolidone was determined by means of gas chromatography.
- the gel fraction was determined analogously to example D-A1 gravimetrically after extraction by means of tetrahydrofuran with 79.1% by weight.
- Polyesterurethane-polyacrylate copolymer (comonomer isoprene), starting from an unsaturated polyester urethane with alpha-methylstyryl groups
- Preparation Example D-B1 a primary dispersion of a copolymer was produced according to the invention, but 15 mol% of the vinylic monomers were replaced by isoprene:
- 2 parts by weight of the alpha-methylstyryl-containing polyurethane dispersion according to Preparation Example D-P1 was 40.0 Parts by weight of methoxypropanol and 686.5 parts by weight of deionized water and heated to 80 ° C. At 80 ° C, 0.6 parts by weight of ammonium peroxodisulfate dissolved in 35.7 parts by weight of deionized water under 3 bar nitrogen pressure in the reactor.
- the resulting primary dispersion of the graft copolymer had a very good storage stability.
- Their solids content was 32.2 wt .-%, the acid number at 18.8 mg KOH / g solids content and its pH at 7.0 (measured at 23 ° C).
- the particle size (z-average) by means of photocorrelation spectroscopy was 97 nm.
- a content of 2.8% by weight of methoxypropanol and 5.6% by weight of N-methylpyrrolidone was determined by means of gas chromatography.
- the gel fraction was determined analogously to example D-A1 gravimetrically after extraction by means of tetrahydrofuran with 78.0% by weight.
- the content of free monomers was determined by gas chromatography at 30-minute intervals analogously to example D-A1, with the highest total monomer content being determined after 30 minutes based on dispersion at 0.5% by weight (3.6%) Wt .-% based on vinyl monomer).
- reaction mixture was stirred at 80 ° C for a further hour and then cooled to room temperature.
- the resulting primary dispersion of the copolymer had a very good storage stability.
- Their solids content was 28.0 wt .-%, the acid number at 18.2 mg KOH / g solids content and its pH at 7.0.
- the particle size (z-average) by means of photocorrelation spectroscopy was 1 10 nm.
- Analogous to example D-A1 a content of 2.9% by weight of methoxypropanol and 5.9% by weight of N-methylpyrrolidone was determined by gas chromatography.
- the gel fraction was determined analogously to example D-A1 gravimetrically after extraction by means of tetrahydrofuran with 81.2% by weight.
- Polyesterurethane-polyacrylate copolymer starting from a saturated sulfur-containing polyester urethane (solvent-containing)
- reaction mixture was stirred at 80 ° C for a further hour and then cooled to room temperature.
- the resulting primary dispersion of the copolymer had good storage stability.
- Their solids content was 33.0 wt .-%, the acid number at 20.1 mg KOH / g solids content and its pH at 7.0.
- the particle size (z-average) by means of photocorrelation spectroscopy was 72 nm.
- Analogous to example D-A1 was by gas chromatography, a content of 2.1 wt .-% methoxypropanol and
- the gel fraction was determined analogously to example D-A1 gravimetrically after extraction by means of tetrahydrofuran with 42.1% by weight.
- Polyetherurethane-polyacrylate copolymer starting from a saturated polyetherurethane
- the resulting primary dispersion of the copolymer had a very good storage stability.
- Their solids content was 32.8 wt .-%, the acid number at 23.2 mg KOH / g solids content and its pH at 6.2.
- Analogous to example D-A1 a content of 1, 1 wt .-% methoxypropanol and by gas chromatography 3.9 wt .-% N-methylpyrrolidone determined.
- the particle size (z-average) by means of photocorrelation spectroscopy was 103 nm.
- the gel fraction was determined analogously to example D-A1 gravimetrically after extraction by means of tetrahydrofuran with 85.2% by weight.
- aqueous phase The components listed in Tables 2a, 2b, 3a and 3b under "aqueous phase" are stirred together in the stated order to form an aqueous mixture, and in the next step an organic mixture is prepared from the components listed under "organic phase".
- the organic mixture is added to the aqueous mixture.
- the mixture is then stirred for 10 minutes and adjusted with the aid of deionized water and ⁇ , ⁇ -dimethylethanolamine (BASF SE) to a pH of 8.0 and spray viscosity.
- BASF SE deionized water
- BASF SE ⁇ , ⁇ -dimethylethanolamine
- Foamstar MF 324 (Cognis) 0.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
- TMDD 50% BG from BASF SE
- Polyester prepared according to Example D, page 10, 1, 0 1, 0 1, 0 1, 0 1, 0 1, 0 1, 0 of DE 4009858 C2
- Luwipal® 052 (BASF SE), melamine 5,0 5,0 5,0 5,0 5,0 5,0 formaldehyde resin
- Pluriol® P 900 BASF SE
- polypropylene oxide 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7
- Polyester prepared according to Example D, page 10, 2.0 2.0 2.0 2.0 2.0 2.0 2.0 of DE 4009858 C2
- Foamstar MF 324 (Cognis) 0.0 0.0 0.0 0.0 0.0 0.0 0.0
- TMDD 50% BG from BASF SE
- Polyester prepared according to Example D, page 10, 1, 0 1, 0 1, 0 1, 0 of DE 4009858 C2
- Luwipal® 052 (BASF SE), melamine- 5.0 5.0 5.0 5.0 formaldehyde resin
- Pluriol® P 900 BASF SE
- Viscalex® HV30 (BASF SE) - solution 3.0 3.0 3.0 3.0 in water (rheology modifier)
- Polyester prepared according to Example D, page 10, 2.0 2.0 2.0 2.0 2.0 of DE 4009858 C2
- water-based paint contained BL-AO Foamstar MF 324 (Cognis) and 1-octanol (BASF SE), all other waterborne basecoats BL-A1 to BL-B4 were free of these two components.
- the multicoat finishes with the waterborne basecoats were prepared according to the following general procedure:
- a 30 cm x 50 cm sheet steel coated with a surfacer coating was provided with an adhesive strip on one longitudinal edge in order to be able to determine the layer thickness differences after coating.
- the aqueous basecoat was applied wedge-shaped electrostatically.
- the resulting aqueous basecoat film was flashed off at room temperature for one minute and then dried in a convection oven at 70 ° C. for 10 minutes.
- On the dried aqueous basecoat a standard two-component clearcoat was applied.
- the resulting clearcoat layer was flashed off at room temperature for 20 minutes.
- aqueous basecoat film and clearcoat film were cured together in a circulating air oven at 140 ° C for 20 minutes.
- the layer thickness of the cured clearcoat film was constant over the entire sheet ( ⁇ 1 ⁇ ) at a clearcoat film thickness of 38 to 42 ⁇ .
- the layer thickness of the pinhole limit was determined.
- a coil sheet of dimensions 30 ⁇ 60 cm was painted with a filler and the filler baked at 160 ° C over a period of 20 minutes.
- a sanding pad by means of a sandpaper having 800 particles per cm 2 on the surface, which had a depth of 2-4 ⁇ and a furrow width of 2 cm.
- the corresponding basecoat was applied with a layer thickness of 8-12 ⁇ .
- the resulting sheet was dried for 10 minutes at 80 ° C, and on the dried aqueous basecoat layer, a conventional and known two-component clearcoat was applied.
- the aqueous basecoat film and clearcoat film were cured together in a convection oven for 20 minutes at 140 ° C.
- the visibility of the grinding cross in the multi-layer coating was determined visually and evaluated on a scale of 1 to 5. High numerical values indicate good visibility of the grinding cross and low numerical values provide good coverage of the grinding points.
- Tables 4 and 5 give an overview of the results of the determination of the needlestick, the needlestick count and the abrasion resistance of the multicoat paint systems:
- the filler was intermediately dried over a period of 10 min at 80 ° C and then baked at 190 ° C over a period of 30 min.
- a basecoat according to Table 6 was first pneumatically applied to this plate. After the basecoat had been flashed off for 1 min at room temperature, the basecoat was dried for 10 minutes at 70 ° C. in a circulating air oven. Subsequently, BASF commercially available 2-component clearcoat FF99-0345 was also applied pneumatically and after 20 minutes flash-off at room temperature, the two layers baked at a temperature of 160 ° C over a period of 30 min. This resulted in a burned multi-layer coating.
- the coatings were sanded. Subsequently, the respective basecoat according to Table 3 was applied pneumatically. After the basecoat had been flashed off at room temperature for 1 minute, the basecoat was dried for 10 minutes at 70 ° C. in a circulating air oven.
- the cross-cut test was carried out in accordance with DIN 2409.
- the evaluation of the results of the cross hatch test was carried out according to DIN EN ISO 2409.
- Table 6 gives an overview of the results of the cross-hatch tests when comparing the different aqueous basecoats:
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Manufacturing & Machinery (AREA)
- Paints Or Removers (AREA)
- Graft Or Block Polymers (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
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US14/905,595 US9803103B2 (en) | 2013-07-17 | 2014-06-04 | Aqueous dispersion of a copolymer |
BR112016000264-4A BR112016000264B1 (pt) | 2013-07-17 | 2014-06-04 | Dispersão aquosa de um copolímero |
EP14727833.7A EP3022242B1 (de) | 2013-07-17 | 2014-06-04 | Wässrige dispersion eines mischpolymerisats |
CA2915147A CA2915147C (en) | 2013-07-17 | 2014-06-04 | Aqueous dispersion of a copolymer |
CN201480039459.0A CN105377931B (zh) | 2013-07-17 | 2014-06-04 | 共聚物的水分散体 |
JP2016526476A JP6716456B2 (ja) | 2013-07-17 | 2014-06-04 | コポリマーの水性分散液 |
KR1020167003830A KR102136056B1 (ko) | 2013-07-17 | 2014-06-04 | 혼합 중합물의 수성 분산액 |
RU2016105103A RU2666537C2 (ru) | 2013-07-17 | 2014-06-04 | Водная дисперсия сополимера |
ES14727833T ES2774437T3 (es) | 2013-07-17 | 2014-06-04 | Dispersión acuosa de un polimerizado mixto |
PL14727833T PL3022242T3 (pl) | 2013-07-17 | 2014-06-04 | Wodna dyspersja kopolimeru |
MX2016000527A MX2016000527A (es) | 2013-07-17 | 2014-06-04 | Dispersion acuosa de un copolimero. |
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PCT/EP2014/061551 WO2015007427A1 (de) | 2013-07-17 | 2014-06-04 | Wässrige dispersion eines mischpolymerisats |
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US (1) | US9803103B2 (de) |
EP (1) | EP3022242B1 (de) |
JP (2) | JP6716456B2 (de) |
KR (1) | KR102136056B1 (de) |
CN (1) | CN105377931B (de) |
BR (1) | BR112016000264B1 (de) |
CA (1) | CA2915147C (de) |
ES (1) | ES2774437T3 (de) |
MX (1) | MX2016000527A (de) |
PL (1) | PL3022242T3 (de) |
RU (1) | RU2666537C2 (de) |
WO (1) | WO2015007427A1 (de) |
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WO2018054726A1 (de) | 2016-09-22 | 2018-03-29 | Basf Coatings Gmbh | Wässrige basislacke mit verbesserter ringleitungsstabilität |
US10363572B2 (en) | 2015-05-06 | 2019-07-30 | Basf Coatings Gmbh | Method for producing a multicoat paint system on plastics substrates |
WO2019207085A1 (de) | 2018-04-27 | 2019-10-31 | Basf Coatings Gmbh | Oberflächenmodifizierte aluminiumoxidhydroxid-partikel als rheologiehilfsmittel in wässrigen beschichtungsmittelzusammensetzungen |
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WO2020216584A1 (en) | 2019-04-26 | 2020-10-29 | Basf Coatings Gmbh | Water-based coating composition and method for forming multilayer coating film using said composition |
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MX2016007934A (es) | 2013-12-18 | 2016-09-13 | Basf Coatings Gmbh | Pigmentos en pasta que comprenden una dispersion acuosa de un copolimero. |
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- 2014-06-04 BR BR112016000264-4A patent/BR112016000264B1/pt active IP Right Grant
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- 2014-06-04 RU RU2016105103A patent/RU2666537C2/ru active
- 2014-06-04 US US14/905,595 patent/US9803103B2/en active Active
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US10363572B2 (en) | 2015-05-06 | 2019-07-30 | Basf Coatings Gmbh | Method for producing a multicoat paint system on plastics substrates |
EP3305865B1 (de) | 2015-06-03 | 2019-11-20 | KCC Corporation | Wasserlösliche lackzusammensetzung für fahrzeug |
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US11041093B2 (en) | 2016-07-20 | 2021-06-22 | Basf Coatings Gmbh | Aqueous dispersions containing polymerizates produced in multiple stages with polyurethanes as well as coating agent compositions containing same |
WO2018054726A1 (de) | 2016-09-22 | 2018-03-29 | Basf Coatings Gmbh | Wässrige basislacke mit verbesserter ringleitungsstabilität |
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WO2019207085A1 (de) | 2018-04-27 | 2019-10-31 | Basf Coatings Gmbh | Oberflächenmodifizierte aluminiumoxidhydroxid-partikel als rheologiehilfsmittel in wässrigen beschichtungsmittelzusammensetzungen |
WO2020216584A1 (en) | 2019-04-26 | 2020-10-29 | Basf Coatings Gmbh | Water-based coating composition and method for forming multilayer coating film using said composition |
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Also Published As
Publication number | Publication date |
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US9803103B2 (en) | 2017-10-31 |
BR112016000264B1 (pt) | 2021-07-13 |
CA2915147C (en) | 2022-07-19 |
JP6807365B2 (ja) | 2021-01-06 |
JP2016531169A (ja) | 2016-10-06 |
ES2774437T3 (es) | 2020-07-21 |
CA2915147A1 (en) | 2015-01-22 |
JP2019039009A (ja) | 2019-03-14 |
MX2016000527A (es) | 2016-04-07 |
RU2666537C2 (ru) | 2018-09-11 |
BR112016000264A2 (pt) | 2017-07-25 |
KR102136056B1 (ko) | 2020-07-21 |
PL3022242T3 (pl) | 2020-06-15 |
RU2016105103A (ru) | 2017-08-22 |
US20160152862A1 (en) | 2016-06-02 |
KR20160031540A (ko) | 2016-03-22 |
CN105377931A (zh) | 2016-03-02 |
EP3022242A1 (de) | 2016-05-25 |
JP6716456B2 (ja) | 2020-07-01 |
EP3022242B1 (de) | 2020-01-01 |
CN105377931B (zh) | 2018-04-06 |
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