Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
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
Arai Katsuhiko
Kojima Minoru
Ohashi Takashi
Okuyama Toru
Sakata Ryozo
Bridgestone Tire Company Limited
Welsh Maurice J.
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