Process for the preparation of PIPA polyols for the production of highly elastic flexible polyurethane foams
AssigneeBayer MaterialScience AG
InventorsPeter Haas, Bert Klesczewski, Sven Meyer-Ahrens
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Abstract
The present invention relates to PIPA polyols, to a process for the preparation of these PIPA polyols, and to a process for the production of highly elastic flexible polyurethane foams from these PIPA polyols.
Claims7
A process for the preparation of polyisocyanate polyaddition polyols (PIPA polyols), comprising reacting (1) one or more polyisocyanates with (2) one or more secondary amine components having at least one hydroxyl group in the molecule, with the proviso that said secondary amine component is not diethanolamine or aminoethylethanolamine, in (3) at least one compound having at least two hydrogen atoms which are reactive towards isocyanate groups and having a molecular weight in the range of from 500 to 10,000 g/mol, and optionally, (4) one or more catalysts.
A polyisocyanate polyaddition (PIPA) polyol comprising the reaction product of
- (1) one or more polyisocyanates,
- with
- (2) one or more secondary amine components having at least one hydroxyl group in the molecule, with the proviso that said secondary amine component is not diethanoalamine or aminoethylethanolamine,
- in the presence of
- (3) at least one compound having at least two hydrogen atoms which are reactive towards isocyanate groups and having a molecular weight in the range of from 500 to 10,000,
- and, optionally
- (4) one or more catalysts.
Dependencies are inferred from the claim text.