HU197765B - Dispersion wall paint - Google Patents

Abstract

The paint according to the invention is characterized in that from 20 to 45% by weight of an aqueous thickening solution of 5 to 25% by weight of styrene-butyl acrylate having an average weight of from 25 to 65% by weight of styrene-butyl-acrylate of from 25 to 65% by weight. copolymer or vinylacetate vinyl vinyl acetate or vinylacetate butyl acrylate copolymer containing from 130 to 100% vinyl acetate or from 30 to 100% vinyl acetate in the form of an aqueous dispersion of 40 to 60%, pigments, filler, preferably lithopone, calcium carbonate 0.5 to 5.0% by weight, preferably 1.5 to 3.5% by weight of hexamethylene tetramine and / or 0.6 to 2.0% by weight of the compound of formula (I), in the formula: M is an integer ranging from 1 to 2, R and R2 are the same: C 1-5 alkyl R and R 2 together form a C 3-6 alkylene Me is Zn, Na or K is. N - C-S- $ II-Me IT) -1-

Description

The present invention relates to highly durable, non-yellowing dispersion wall paint.

A great advantage of aqueous dispersion paints is that when applied or applied, no harmful and hazardous solvent vapor is released into the air when the coating dries. The use of such paint is particularly useful when applied by hand as it is not harmful to health, non-flammable and the equipment can be cleaned with water. Typically, the binder is polyvinyl acetate, polyvinyl propionate, styrene-butadiene copolymer, acrylic acid ester copolymer, and many other giant molecular plastics.

Plastic dispersion paints dry quickly (3-5 hours) after application. Although evaporation of water is a physical process, the dried film is no longer dispersible with water. As the dispersion coagulates during drying, the binder particles are incorporated with the pigment particles. With the right choice of plastic dispersion, pigment, pigment-binder ratio, plasticizers and other excipients, inks can be prepared for a variety of applications.

Plastic dispersions are produced in a wide variety of ranges. A polystyrene dispersion can be made into a coherent film only if it also contains a suitable plasticizer. Butadiene-styrene copolymers are in fact internally plasticized styrene polymers. The properties depend on the ratio of the monomers. The copolymer contains double bonds, the films are sensitive to oxidation, yellowing and poorly resistant to aging. (Lajos Kovács: Varnish and Paint Pocket Book, Technical Publishing House, Budapest, 1962, p. 300).

Dispersion paints known to date are known in the art. another disadvantage of coatings is that they do not provide sufficient protection against external influences. In many cases, their heat and / or sound insulation properties are not satisfactory. Their stability does not always meet the requirements. (Swiss Patent No. 654,322.)

It is an object of the present invention to provide an aqueous dispersion wall paint which is highly durable, non-yellowing and free from the above deficiencies.

Surprisingly, in our work, it has been found that the above object is achieved by the use of an aqueous dispersion or a dispersion of hexylene / A compound of formula I wherein m = an integer of 1 to 2,

R 1 and R ₂ are the same: C 1-5 alkyl or R 1 and R _{2 taken} together form C 3-6 cycloalkylene;

Me represents Zn, Na or K; the compound or compounds are added.

Compound (I) commercially available

- for example, HERMAT ZDK - a product of Chemické Závody Juraja Dimitrova Bratislava, Czechoslovakia.

Thus, the dispersion wall paint of the present invention is 20-45% by weight of a conventional thickener solution containing various additives, e.g. potassium tripolyphosphate, a water soluble giant molecule, e.g. carboxymethylcellulose sodium, hydroxyethylcellulose, ethylene glycol, Na-polyacrylate, bis-trimethyltin oxide, white spirit, ammonium hydroxide, and

5 to 25% by weight, preferably 25 to 65% by weight, of a styrene copolymer of styrene or butyl acrylate or a vinyl acetate or vinyl acetate or 30% to 100% vinyl acetate copolymer binder, and other conventional, e.g. a pigment, filler: lithopone, calcium carbonate, kaolin, a composition comprising from 0.5 to 3.0% by weight, preferably 1.5 to 3.5% by weight of hexamethylenetetramine and / or 0.6% by weight of the dry matter. Contains 2.0% by weight of compound (s) of formula (I). The dispersion wall paint according to the invention has a dry matter content of 40-80% by weight.

The following examples illustrate the composition, preparation and use of the dispersion wall paint according to the invention without limiting the scope thereof.

Example 1

A.) Thickening solution

85.0 g of water

0.5 g of potassium tripolyphosphate

4.0 g of carboxymethylcellulose sodium (viscosity of 25% by weight in aqueous solution at 25 ° C)

5.0 g ethylene glycol

0.5 g Na-polyacrylate (30% w / w viscosity at 25 ° C / 1 Pa)

2.0 g of hexamethylenetetramine 2.0 g of white spirit

1.0 g of ammonium hydroxide in 25% aqueous solution

100 g

Water and potassium tripolyphosphate are weighed into a stirred vessel. The mixer was set to 600 rpm. The carboxymethylcellulose sodium was added and dissolved at a constant rate. After complete dissolution, add the other raw materials in the order shown and homogenize for 20 minutes.

B.) Dye g of thickening solution according to A.) g of lithopone (30% ZnS, 70% BaSO <

g calcium carbonate g kaolin g alumina hydrate g styrene-butyl acrylate copolymer (average molecular weight 200,000) dispersion 50%; styrene content of the copolymer: 25% by weight.

W

-2197765

Weigh the thickener solution into a stirred vessel. The mixer was set to 500 rpm. The pigments are added in the same order in the same order. The mixer was then set at 1200 rpm and dispersed for 30 minutes. The mixer speed is then reduced to 600 rpm and the polymer dispersion is added. The mixer speed is increased again. Stirring is continued at 1000 rpm for 30 minutes.

Example 2

A.) Thickening solution

82.5 g water

0.5 g of sodium tripolyphosphate

4.5 g of soluble hydroxyethyl cellulose (cellulose monoglycol ether; degree of substitution: 1

5.0 g ethylene glycol

0.7 g Na-polyacrylate (having the same viscosity as Na-polyacrylate used in Example 1)

0.5 g of chloroacetamide 0.2 g of sodium benzoate

1.4 g of the compound of formula I (m = 2, R 1 = R ₂ = butyl, Me = Zn)

2.0 g of white spirit

2.7 g of ammonium hydroxide in 25% w / w aqueous solution

100 g

The solution preparation procedure is the same as in Example 1.

B.) Paint

g.A.) thickener solution 25 g zinc sulfide g kaolin 2 g talc g calcium carbonate g vinyl acetate vinyl vertebrate copolymer average molecular weight 150,000) dispersion 50%; content of the copolymer vinyl acetate: 70%

The procedure for preparing the evening is the same as in Example 1

Example 3 (for thick coating)

A.) Thickening solution

74.6 g water

0.5 g of potassium tripolyphosphate

6.0 g of soluble hydroxyethyl cellulose (cellulose monoglycol ether; degree of substitution: 0.8)

4.0 g ethylene glycol

0.7 g of Napolyacrylate (having the same viscosity as used in Example · 1)

0.4 g of chloroacetamide 0.2 g of sodium benzoate

2.4 g of the compound of formula I have a m value of 2, Me = Zn ion, R 1 = R ₂ = ethyl ·

2.5 g of tetrapentin

2.7 g of ammonium hydroxide in 25% aqueous solution

6.0 g of hexamethylenetetramine nxr-g

The solution preparation procedure is the same as in Example 1.

B.) Thick coating g thickening solution according to A.) g lithopone 4 g kaolin 4 g talc g calcium carbonate g styrene butyl acrylate copolymer (average molecular weight 170,000) dispersion 50%; the styrene content of the copolymer is 65% by weight.

100 g

Mixer - Weigh the thickener solution into a vessel, preferably a planetary mixer. The agitator speed is set at 400 rpm and the materials are added to the system in the specified order. Care should be taken to ensure even dosing. Mix for 40 minutes until homogeneous.

Example 4

The procedure is as in Example 2, but using Me = Na ion, R 1 = R ₂ = butyl and styrene-butyl acrylate copolymer instead of vinyl acetate-butyl acrylate copolymer (average molecular weight: 140,000-170,000).

Example 5

Following the procedure of Example 3, only 0.4 g of the compound of formula I is used and Me = K ion, R, forms a pentamethylene ring with R ₂ , and polyvinyl instead of styrene-butyl acrylate copolymer. acetate copolymer (average molecular weight: 130,000-170,000)

Example 6

In each case, the procedure of Example 1 was followed. However, thickener solution A) has a different composition: less water and more hexamethylenetetramine. It also contains a compound of formula (I) as follows:

75.0 g water

8.5 g of hexamethylenetetramine

3.5 g of the compound of formula I (m = 2; R 1 = methyl, R ₂ = n-propyl, Me = Zn)

The amount and quality of the other ingredients are the same as in Example 1.

Example 7

In each case, the procedure of Example 1 was followed. However, thickener solution A) has a different composition: more water and less hexamethylenetetramine:

86.19 g water

0.81 g of hexamethylenetetramine.

The amount and quality of the other ingredients are the same as in Example 1.

Example 8 (Comparative)

All proceed as in Example 1 but without adding hexamethylenetetramine or a compound of Formula I to the system.

9. Application Example

1-7. The compositions prepared according to Examples 3 and 3 (Example 3) are coated

-3197765 (patch) and light and durability tests

First

performed. The grades are shown in the table below.

Spreadsheet

Properties of wall paints according to the invention

The stone Properties full of fun Fényéilóság, Adhesive adhesive Adhesive strength, Dacian figures MSZ 9402/50 strength is / MPa by MPa / Concrete / After exercise according to ÉMISZ 264 First 10 1.9 does not change Second 10 2.1 _ 11 Third 11 1.9 _ 11 _ 4th 9 2.0 _ II _ 5th 11 2.0 - - 6th 11 2.1 7. 9 3. / ozazehason- 1.9 - ti - example / 5 I_ 0.2 0.18

PATENT CLAIMS

Claims (3)

1. Dispersion wall paint, 20-45% by weight, 5 to 25% by weight aqueous thickener, 170 to 200,000 by weight of a styrene butyl acrylate copolymer containing from 5 to 25% by weight, 25 to 65% by weight of styrene or 130,000 to 30% by weight of vinyl acetate —Containing an average molecular weight of 170,000 vinyl acetate-vinyl veratate copolymer in the form of an aqueous dispersion of 40 to 60% by weight with pigments, fillers, preferably lithopone, calcium carbonate, characterized in that the composition has a solids content of 0.6-2.0 t% of the compound of formula (I) in which: m = an integer of 1 to 2, R 1 and R ₂ are the same: C 1-5 alkyl; R 1 and R ₂ together form a C 3 -C 6 alkylene group; Me represents Zn, Na or K ion. (Priority: 19.10.1987) 2. Dispersion wall paint, 20-45% by weight, 5 to 25% by weight aqueous diluting solution, 170 to 200,000 by weight of styrene butyl acrylate copolymer containing from 5 to 25% by weight, 25 to 65% by weight of styrene or 130,000 to 170% by weight of vinyl acetate containing 30 to 100% by weight Contains a copolymer of vinyl acetate-vinyl veratate having an average molecular weight of 000, in the form of an aqueous dispersion of 40-60% by weight, with pigments, filler, preferably lithopone, calcium carbonate, characterized in that the composition is 0.5-5.0% by weight, preferably from 1.5 to 3.5% by weight of hexamethylenetetramine and / or from 0.6 to 2.0% by weight of the compound of formula (I): 35 m = an integer from 1 to 2, R 1 and R ₂ are the same: C 1-5 alkyl; R 1 and R _{2 taken} together are C 3-6 alkylene 40 alcohols; Me represents Zn, Na or K ion. (Priority of Amendment: 08/08/1988) 3. Dispersion paint, which was 25-45%, 5-25% aqueous thickener solution as binder _45% 5-25, 30% 100t vinyl acetate content of from 130,000 to 170,000 average molecular weight of vinyl acetate-butyl acrylate copolymer in the form of an aqueous dispersion of 40 to 60% by weight, pigments, fillers, preferably 50 lithopone, in addition to calcium carbonate, characterized in that the composition contains from 0.5 to 5.0%, preferably 1.5 to 3.5% by weight of hexamethylenetetramine and / or 0.6 to 2% by weight on a dry basis, 0% by weight of the compound of formula (I): wherein m is an integer from 1 to 2; R 1 and R ₂ are the same: C 1-5 alkyl; R 1 and R ₂ together form: C 3-6 alkylene; Me represents: Zn, Na or K ion, contains.