Process of the preparation of modified polyisocyanurate foams fo

Details Process of the preparation of modified polyisocyanurate foams fo Process of the preparation of modified polyisocyanurate foams fo

1995-06-22

1997-05-06

Gorr, Rachel

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521163, 521177, 521901, 521902, 25218214, 25218226, 25218227, C08G 1816

Patent

active

056272200

ABSTRACT:
A process of the preparation of the modified polyisocyanurate foams provided by a reaction of a polyisocyanate with a polyol composition mixture comprising a polyol, water, a trimerization catalyst, a carbodiimide catalyst, and an aromatic compound used as a chain extender. An amount of the aromatic compound used in the preparation is 0.5 to 10.0% by weight with respect to a total weight of the polyisocyanate and the polyol mixture.

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