Process for the preparation of cellular polymers having urethane

Details Process for the preparation of cellular polymers having urethane Process for the preparation of cellular polymers having urethane

1980-12-22

1981-11-24

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521164, 521167, 521172, 521173, 521174, 521175, 521176, 521177, C08G 1814

Patent

active

043025510

ABSTRACT:
This invention relates to a process for preparing cellular polymers having urethane groups, isocyanurate groups, or both. The cellular polymers are prepared by reacting an organic polyisocyanate with certain polymer dispersions in the presence of a blowing agent.
The polymer dispersions comprise

REFERENCES:
patent: 3857800 (1974-12-01), Fishbein et al.
patent: 4104236 (1978-08-01), Pimroth
patent: 4111865 (1978-09-01), Seefried et al.
patent: 4176218 (1979-11-01), Demou et al.

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