Method for producing modified polyisocyanurate foams

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

1994-03-14

1995-01-31

Foelak, Morton

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

502164, 521108, 521129, 521902, B01J 3100, C08G 1800

Patent

active

053858786

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.

REFERENCES:
patent: 5126305 (1992-06-01), Ehrig
patent: 5147840 (1992-09-01), DeJong

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