Blowing agents for polyurethane foam

Details Blowing agents for polyurethane foam Blowing agents for polyurethane foam

1988-07-29

1990-03-06

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 50, C08G 1814

Patent

active

049066722

ABSTRACT:
Improved methods are provided for incorporating carbon dioxide and carbon dioxide generating compounds into polyurethane foam forming compositions as blowing agents to eliminate or reduce the amount of low boiling liquid auxiliary blowing agents, such as methylene chloride and chlorofluorocarbons conventionally used in the manufacture of urethane foams.

REFERENCES:
patent: 904003 (1959-02-01), Merriman
patent: 3108976 (1963-10-01), Knox
patent: 3184419 (1965-05-01), Merriman
patent: 4098855 (1978-07-01), Fries
patent: 4275172 (1981-06-01), Barth et al.
patent: 4284728 (1981-08-01), Demou et al.
patent: 4288564 (1981-09-01), Conover et al.
patent: 4312820 (1982-01-01), Arnold et al.
patent: 4526907 (1985-07-01), Thiele et al.
patent: 4783295 (1988-11-01), Kearns et al.
European Patent Application No. 0145250, Willoughby, Improvements in Polyurethanes, 6/19/85.

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