C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/65 (2006.01) C08G 18/32 (2006.01) C08G 18/40 (2006.01) C08G 18/66 (2006.01)
Patent
CA 2240225
This invention relates to a process for the production of resilient, flexible polyurethane foams. This process comprises reacting A) polyisocyanates or polyisocyanate prepolymers, B) compounds having at least two isocyanate-reactive hydrogen atoms and a molecular weight of 500 to 18000, C) optionally, compounds having at least two isocyanate-reactive hydrogen atoms and a molecular weight from 32 to 499, D) water, E) optionally, blowing agents, F) activators, stabilizers and other per se known additives, and G) one or more crosslinking agents, wherein component B) comprises B)i) at least one polyether polyol having of a functionality of 4 to 8, preferably of 4.5 to 8, more preferably of 5 to 7, and B)ii) at least one polyol containing a filler from the group of PUD-, SAN- or PIPA- modified polyols of a functionality of 2.5 to 4, and component G) comprises one or more alkanolamine crosslinking agents which correspond to the general formula Image in which m represents an integer between 0 and 2, n represents an integer between 1 and 3 and R represents a hydrogen atom or a methyl group.
Haas Peter
Hettel Hans
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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