Blowing agents for foaming polyurethane having no ozone depletio

Details Blowing agents for foaming polyurethane having no ozone depletio Blowing agents for foaming polyurethane having no ozone depletio

1993-03-04

1994-02-01

Foelak, Morton

Compositions

Preservative agents

Anti-corrosion

2521822, 25218224, 521130, 521131, 521155, C09K 300, C08J 914

Patent

active

052830039

ABSTRACT:
A blowing agent composition and method of use that is not destructive to the ozone while producing a polyurethane integral skin foam product having high dimensional stability with minimal or no shrinkage. The blowing agent of the present invention is comprised of specific ratios of two or more components having no known ozone depleting characteristics. The components include methylene chloride, methyl formate, and one or more of n-pentane, isopentane, and cyclopentane. In one embodiment, the resulting product also demonstrates fire retardancy.

REFERENCES:
patent: 4055521 (1977-10-01), Taub et al.
patent: 4381353 (1983-04-01), McDaniel
patent: 4699931 (1987-10-01), Fuzesi et al.
patent: 4917778 (1990-04-01), Takada et al.
patent: 5084486 (1992-01-01), Patten et al.
patent: 5084487 (1992-01-01), Becker et al.
patent: 5114980 (1992-05-01), Lii et al.
patent: 5122547 (1992-06-01), Becker et al.
patent: 5153235 (1992-10-01), Becker et al.

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