Method for producing heat resistant and flame resistant polyisoc

Details Method for producing heat resistant and flame resistant polyisoc Method for producing heat resistant and flame resistant polyisoc

1978-06-20

1980-02-19

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521902, C08G 1814

Patent

active

041895410

ABSTRACT:
Polyisocyanurate foams having excellent heat resistance and flame resistance are produced by using no common organic silicone surfactant or using less than 0.2% by weight based on an organic polyisocyanate, of said organic silicone surfactant, when producing a polyisocyanurate foam by reacting an organic polyisocyanate, a blowing agent and a catalyst for trimerizing isocyanate and if necessary a surfactant, a modifier and the other additives.

REFERENCES:
patent: 4072636 (1978-02-01), Ashida

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