Method for production of open cell rigid polyurethane foam

Details Method for production of open cell rigid polyurethane foam Method for production of open cell rigid polyurethane foam

1993-04-20

1994-06-07

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 78, 521155, C08G 1800

Patent

active

053189973

ABSTRACT:
A method of producing an open cell rigid polyurethane foam which comprises reacting a mixture of polyols having a hydroxyl value of 160-360 mg KOH/g with a polyisocyanate in the presence of water as a blowing agent in an amount of 6-12 parts by weight in relation to 100 parts by weight of the mixture of polyols at an isocyanate index of 70-120, the mixture of polyols comprising:

REFERENCES:
patent: 4409341 (1983-10-01), Hira et al.
patent: 4923904 (1990-05-01), Hasegawa et al.
patent: 5013766 (1991-05-01), Hanusa
patent: 5063253 (1991-11-01), Gansen

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