Polyisocyanate compositions and low density flexible polyurethan

Details Polyisocyanate compositions and low density flexible polyurethan Polyisocyanate compositions and low density flexible polyurethan

1994-03-16

1997-04-15

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521170, 528 67, 528 76, 528 85, 525452, 525453, 525458, 525460, 25218222, C08G 1804

Patent

active

056210167

ABSTRACT:
Polyisocyanate compositions are provided which comprise the reaction product of a diphenylmethane diisocyanate composition comprising 25 to 70% by weight of 2,4'-diphenylmethane diisocyanate and an isocyanate-reactive polyoxyethylene polyoxypropylene polyahl having an ethylene oxide content of at least 30% by weight, a number average hydroxyl equivalent weight of 700-2000 and an average nominal hydroxyl functionality of 2-6, the reaction product having a free NCO content of 2-31% by weight.

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