C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
403/34
C08G 18/48 (2006.01) C08G 18/50 (2006.01) C08G 18/66 (2006.01) C08G 18/76 (2006.01)
Patent
CA 2009492
Mo3188 PU-344 PREPARATION OF FLEXIBLE POLYURETHANE FOAMS ABSTRACT OF THE DISCLOSURE The present invention is directed to a process for preparing a flexible polyurethane foam and to the foam so-produced. The process broadly comprises reacting: A) from more than O to up to 3 parts by weight per 100 parts by weight of components B) and C) of an amine of the formula: H2N - R - NH2 where R is a C4 to C10 straight or branched alkylene group, or a C4 to C15 alicyclic group, B) from 0 to 30% by weight of a polyoxyalkylene polyamine having a molecular weight of from about 400 to about 5000 and containing from 2 to 3 primary amino groups, C) from 70 to 100% by weight of one or more polyether polyhydroxyl compounds having hydroxyl functionalities of from 2 to 3 and molecular weights of from about 1000 to about 10,000, the percents by weight of components B) and C) totalling 100%, and being based on the combined weight of components B) and C), and D) an isocyanate selected from the group consisting of toluene diisocyanate and prepolymers of toluene diisocyanate, said isocyanate having an isocyanate group content of from about 15 to about 48% by weight, in the presence of E) a blowing agent, at an isocyanate index of from 60 to 140. Mo3188
Gricar James R.
Milliren Charles M.
Corporation Bayer
Swabey Ogilvy Renault
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