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US 6,638,990 B2Granted
Flame-laminable polyurethane foams
AssigneeBayer Aktiengesellschaft
InventorsPeter Haas, Matthäus Gossner, Klaus-Peter Herzog
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Abstract
This invention relates to flame-laminable polyurethane block foams having high peel strength, a process for their production and the use thereof for textile lamination.
Claims2
A process for the production of a composite material comprising laminating a layer of a flexible polyether-polyurethane foam with a textile or top layer, wherein said flexible polyether-polyurethane foam comprises the reaction product of:
- A) at least one polyisocyanate or polyisocyanate prepolymer, with
- B) at least one polyether polyol having a functionality of 2 to 6 and a number average molecular weight of 1,000 to 10,000 g/mol,
- C) optionally, at least one aliphatic chain extender having a molecular weight of 62 to 800,
- D) at least one aromatic polyol component which is at least bifunctional, wherein said aromatic polyol is selected from the group consisting of (1) one or more hydroxyl-containing esters having a number average molecular weight of 150 to 1,200 g/mol, (2) one or more hydroxyl-containing ethers having a number average molecular weight of 150 to 999 g/mol and (3) mixtures thereof, and
- E) at least one blowing agent comprising water,
- wherein the isocyanate index is from 80 to 120.
3 more elements
Dependencies are inferred from the claim text.