C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/42 (2006.01) C08G 18/66 (2006.01) C08G 63/90 (2006.01) C08J 9/12 (2006.01)
Patent
CA 2100231
Low-fog flexible polyester polyurethane foams are produced by reacting a) polyisocyanates, with b) polyesters containing at least two hydroxyl groups and having a molecular weight in the range from 400 to 10,000, in the presence of c) water and/or readily volatile organic compounds as blowing agents wherein prior to reacting, the polyesters have been subjected to continuous distillation over an average holding time of 2 to 600 s, at a temperature of 160 to 250°C, and under a pressure of 0.05 to 10 mbar. The reaction mixture may optionally contain d)compounds containing at least two active hydrogen atoms and having a molecular weight in the range from 32 to 400 as chain-extending and crosslinking agents, and/or e) auxiliaries and additives known per se. These low-fogging polyester polyurethane foams are extremely suitable for use in vehicles, preferably automobiles.
Baatz Gunter
Illger Hans-Walter
K"onig Klaus
Naujoks Manfred
Rabe Hansjurgen
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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