C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/150, 402/152
C08G 18/10 (2006.01) C08G 18/48 (2006.01) C08G 18/76 (2006.01)
Patent
CA 1308514
Mo3183 LeA 26,070 LIQUID POLYISOCYANATE COMPOSITIONS, A PROCESS FOR THEIR PREPARATION, AND THEIR USE FOR THE PREPARATION OF FLEXIBLE POLYURETHANE FOAMS ABSTRACT OF THE DISCLOSURE This invention relates to liquid urethane-modified polyisocyanate compositions obtained by reaction of polyiso- cyanates or polyisocyanate mixtures of the diphenylmethane series containing from about 50 to about 100% by weight diisocyanato- diphenylmethane isomers with substoichiometric quantities of polyether polyol compositions having an average hydroxyl equivalent weight of about 500 to 3000 and an average hydroxyl functionality greater than about 4, optionally followed by mixing the initially formed reaction product with urethane-free poly- isocyanates or polyisocyanate mixtures of the diphenylmethane series containing from about 40 to about 100% by weight diiso- cyanatodiphenylmethane isomers. This invention also relates to a process for the preparation of such polyisocyanate compositions. The invention further relates to the use of such compositions as the polyisocyanate component in the production of flexible polyurethane foams. Mo3183
600395
Gansen Peter
Seel Klaus
Wolf Klaus-Dieter
Aktiengesellschaft Bayer
Gansen Peter
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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