Production of polyisocyanurate foam

Details Production of polyisocyanurate foam Production of polyisocyanurate foam

1980-11-26

1982-06-22

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521116, 521172, C08G 1814

Patent

active

043363415

ABSTRACT:
Polyisocyanurate foam is produced by reacting a polyisocyanate component with an anhydrous reaction product between a dibasic acid anhydride and a partially alcoholated polyether-polyol with an alkali metal hydroxide and/or alkaline earth metal hydroxide. The reaction product acts as a catalyst for trimerizing the polyisocyanate and also as a polyether-polyol component.

REFERENCES:
patent: 3455886 (1969-07-01), Versnel
patent: 4128532 (1978-12-01), Elmers et al.

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