Polyisocyanurate foams made with polyester polyols and chlorodif

Details Polyisocyanurate foams made with polyester polyols and chlorodif Polyisocyanurate foams made with polyester polyols and chlorodif

1990-11-05

1992-06-23

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521128, 521131, 427155, 427373, 428 77, 4284231, C08G 1814

Patent

active

051243660

ABSTRACT:
A process for the manufacture of a rigid, closed-cell polyisocyanurate foam from a foam forming mixture comprising an organic polyisocyanate, a polyol, a blowing agent, and a catalyst, utilizing a polyester polyol as the sole polyol, and chlorodifluoromethane or a mixture of chlorodifluoromethane and at least one co-blowing agent as the blowing agent.

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Fiorentini, C., et al., "Manufacturing Rigid PUR Foam Without CFCs", Translated from Kunststoffe 79(1989)12, pp. 1299-1302 (+ untranslated article).

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