Method for producing modified polyisocyanurate foams

Details Method for producing modified polyisocyanurate foams Method for producing modified polyisocyanurate foams

1993-10-21

1994-05-31

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521129, 521902, C08G 1800

Patent

active

053170342

ABSTRACT:
A method for producing a modified polyisocyanurate foam by reacting an organic polyisocyanate, polyol and water in the presence of a trimerization catalyst composed of a salt of 1,8-diaza-bicyclo[5.4.0]undecene-7, and a carbodiimidation catalyst composed of a certain phosphorene oxide. The method enables production of low density modified polyisocyanurate foams with ease and rapidly without using volatile blowing agents such as CFC, HCF, HFC pentane and methylene chloride.

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