Rigid polyurethane foam and process for producing the same

Details Rigid polyurethane foam and process for producing the same Rigid polyurethane foam and process for producing the same

1990-11-21

1993-06-01

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521115, 521128, 521155, 521164, 521167, 521173, 521175, 521177, C08J 914, C08K 502, C08G 1828

Patent

active

052160408

ABSTRACT:
A rigid polyurethane foam obtained by foaming a special polyol component and an isocyanate component in the presence of a blowing agent comprising water and at least one member selected from the group consisting of 1,1-dichloro-2,2,2-trifluoroethane and 2,2-dichloro-2-monofluoroethane possesses balanced excellent properties, has no surface void, and shows only slight expansion after molding. Therefore, it can be effectively used as a heat insulator, in particular, a heat insulator for refrigerators.

REFERENCES:
patent: 4302551 (1981-11-01), Morn et al.
patent: 4310632 (1982-01-01), Horacek et al.
patent: 4394463 (1983-07-01), Cuscurida et al.
patent: 4500656 (1985-02-01), Rasshofer et al.
patent: 4742089 (1988-05-01), Naka et al.

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