C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
403/41
C08G 18/48 (2006.01) C08G 18/10 (2006.01) C08G 18/12 (2006.01) C08G 18/40 (2006.01)
Patent
CA 1319786
Mo3133 LeA 25,859 PROCESS FOR THE PRODUCTION OF COLD-SETTING FLEXIBLE POLYURETHANE FOAMS WITH EXCELLENT DAMPING PROPERTIES ABSTRACT OF THE DISCLOSURE This invention relates to a process for the production of cold-setting flexible polyurethane foam useful for damping sound comprising reacting a polyisocyanate in the presence of water with (a) at least one polyether having an OH number of from 20 to 60 and containing at least two OH groups, wherein said polyether is based on 75 to 95% by weight propylene oxide and 5 to 25% by weight ethylene oxide; (b) a polyether or polyester having an OH number of from 150 to 400 and containing at least two OH groups; and (c) a polyether different from components (a) and (b) having an OH number of from 20 to 200 and containing at least two OH groups, wherein said polyether is based on propylene oxide and ethylene oxide and has an ethylene oxide content above 50% by weight based on the total amount of propylene oxide and ethylene oxide.
591367
Gansen Peter
Lindsey John J.
Wolf Klaus-Dieter
Wolfgramm Rudi
Aktiengesellschaft Bayer
Mobay Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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