Method for producing open cell rigid polyurethane foam

Details Method for producing open cell rigid polyurethane foam Method for producing open cell rigid polyurethane foam

1992-12-11

1995-10-10

Seidleck, James J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521124, 521137, 521139, 521159, 521170, 521172, 521174, 521902, C08J 908

Patent

active

054571383

ABSTRACT:
A method of producing an open cell rigid polyurethane foam which comprises reacting a polymethylene polyphenylisocyanate prepolymer with a polyol at an NCO/OH equivalent ratio of 1.3 to 3.0 by use of a blowing agent substantially comprising water in the presence of a catalyst, a foam stabilizer and a cell opening agent.

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