GB1015333A - Improvements in or relating to polyurethane foams - Google Patents

Improvements in or relating to polyurethane foams

Info

Publication number
GB1015333A
GB1015333A GB7506/63A GB750663A GB1015333A GB 1015333 A GB1015333 A GB 1015333A GB 7506/63 A GB7506/63 A GB 7506/63A GB 750663 A GB750663 A GB 750663A GB 1015333 A GB1015333 A GB 1015333A
Authority
GB
United Kingdom
Prior art keywords
polyether
diisocyanate
polyisocyanate
polyisocyanate composition
diarylmethane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7506/63A
Inventor
Frank Whitley Lord
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB7506/63A priority Critical patent/GB1015333A/en
Priority to US346100A priority patent/US3328320A/en
Priority to BE644308A priority patent/BE644308A/xx
Priority to NL6401791A priority patent/NL6401791A/xx
Priority to FR965079A priority patent/FR1384416A/en
Priority to DEJ25338A priority patent/DE1193243B/en
Publication of GB1015333A publication Critical patent/GB1015333A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/482—Mixtures of polyethers containing at least one polyether containing nitrogen
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0008—Foam properties flexible
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/005—< 50kg/m3
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Foamed polyurethane materials are produced by the interaction of an organic polyisocyanate composition comprising a major proportion of a diarylmethane diisocyanate and at least 5% by weight of a polyisocyanate of functionality greater than two with a hydroxyl group-containing polyether in the presence of a gas-generating agent such as water or a low boiling-point liquid which is inert with respect to the polyurethane foam-forming ingredients, the combined active hydrogen content of the polyether and any water present being such that the weight of polyisocyanate composition required for the interaction is less than the weight of polyether used, the interaction proceeding by the steps of mixing the polyisocyanate composition with an amount of the polyether such that the rate ratio of polyisocyanate composition to polyether is at least equal to one, thus forming a dispersion of polyether in the polyisocyanate composition and thereafter mixing the dispersion with the gas-generating agent and the remaining quantity of polyether and allowing the mixture to react to form a foam. Diphenylmethane diisocyanate and phenyltolyl methane diisocyanate are especially suitable as the diarylmethane diisocyanates. The polyisocyanate of functionality greater than 2 is present as 5% to 50% of the total polyisocyanate; it may be introduced in several ways: either directly to the diaryl methane diisocyanate or by reacting some diaryl methane diisocyanate with a polyhydric polyol or by partially polymerizing diarylmethane diisocyanate to form isocyanurate derivatives or by using polyisocyanates of functionality greater than two which have been formed as biproducts in the formation of diarylmethane diisocyanate by the phosgenation of crude diaminodiarylmethane. Water in quantities of up to 7% by weight of the polyether and low boiling point liquids such as halogenated hydrocarbons can be used as gas generating agents. Surface active agents, catalysts, flame retardants, cross-linking agents, plasticizers, colouring matter and antioxidants can be incorporated into the reaction mixture.
GB7506/63A 1963-02-25 1963-02-25 Improvements in or relating to polyurethane foams Expired GB1015333A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB7506/63A GB1015333A (en) 1963-02-25 1963-02-25 Improvements in or relating to polyurethane foams
US346100A US3328320A (en) 1963-02-25 1964-02-20 Manufacture of flexible polyurethane foams utilizing polyether-polyisocyanate dispersion
BE644308A BE644308A (en) 1963-02-25 1964-02-25
NL6401791A NL6401791A (en) 1963-02-25 1964-02-25
FR965079A FR1384416A (en) 1963-02-25 1964-02-25 Polyurethane foam manufacturing process
DEJ25338A DE1193243B (en) 1963-02-25 1964-02-25 Process for the production of polyurethane foams

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7506/63A GB1015333A (en) 1963-02-25 1963-02-25 Improvements in or relating to polyurethane foams

Publications (1)

Publication Number Publication Date
GB1015333A true GB1015333A (en) 1965-12-31

Family

ID=9834427

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7506/63A Expired GB1015333A (en) 1963-02-25 1963-02-25 Improvements in or relating to polyurethane foams

Country Status (1)

Country Link
GB (1) GB1015333A (en)

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