Process for rapid curing of polyether polyurethane foam

Details Process for rapid curing of polyether polyurethane foam Process for rapid curing of polyether polyurethane foam

1984-09-05

1985-08-27

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521918, C08G 1814

Patent

active

045379122

ABSTRACT:
A process for the rapid post curing of polyether polyurethane foam in the form of porous blocks in which the foam is subjected to a mixture of water vapor and gaseous ammonia, primary or secondary amines at a temperature of about 50.degree. to 150.degree. F. for a period of 1 or more minutes. The cured foam recovers its original dimensions when distorted or compressed after the distortion or compression force is released.

REFERENCES:
patent: 3061885 (1962-11-01), Rogers et al.
patent: 3475525 (1960-10-01), Plteris
patent: 3723393 (1973-03-01), Kistner
patent: 3890414 (1975-06-01), Ricciandi et al.
patent: 4069286 (1978-01-01), Greinhalgh
patent: 4088724 (1978-05-01), Kulment
Plastic Foams-Frisch and Saunders (McDekker Inc., New York 1973) pp. 232-235.

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