Process for producing closed-cell polyurethane foam compositions

Details Process for producing closed-cell polyurethane foam compositions Process for producing closed-cell polyurethane foam compositions

1989-09-18

1990-05-22

Kight, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521119, C08J 900

Patent

active

049278630

ABSTRACT:
A process is disclosed comprising mixing selected shrinkage-minimizing halocarbons with selected two-carbon hydrogen-containing halocarbons, HCFC-123, HCFC-123a and HCFC-141b, and using this mixture as a blowing agent to produce minimal shrinkage closed-cell polyurethane foams.

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