Polyisocyanurate polymers prepared using carbamate modifier

Details Polyisocyanurate polymers prepared using carbamate modifier Polyisocyanurate polymers prepared using carbamate modifier

1979-02-21

1980-02-19

Cockeram, H.S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

428315, 4284258, 521902, 528 49, 528 52, 528 90, C08G 1814, C08G 1818

Patent

active

041895444

ABSTRACT:
Novel cellular and non-cellular polymers are provided in which the major recurring polymer unit is isocyanurate which polymer comprises the reaction product obtained by bringing together an aromatic polyisocyanate, a trimerization catalyst, and a minor amount of a carbamate modifier.
The use of the carbamate modifier allows for the presence of high catalyst levels without shortening the reaction initiation period. At the same time, the resulting cure is very rapid and the extent of cure much deeper than has heretofore been attainable.

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