Patent ID: 6703471
Filing Date: 2004-03-09
Classification: C07D,C08G

Abstract:
A process for preparing a monomer-containing polyisocyanurate, comprising:partially trimerizing isophorone diisocyanate at a temperature of 0-160Â° C. for 3 minutes to 3 hours in the presence of 0.05-2% by weight of a catalyst, based on the weight of the isophorone diisocyanate; wherein said catalyst is represented by the following formula [Râ€”NX3]mâŠ•mY&ominus;whereinY&ominus; is a carboxylic acid anion having 4-8 carbons; R is a &bgr;-hydroxyalkyl group having 2-6 carbons; X is an alkylene group having 2-3 carbons; and m is a number from 1.0 to 2.0; wherein the three radicals X form a ring with the quaternary nitrogen by way of a common nitrogen atom; and wherein said process proceeds at a temperature of from 0 to 160Â° C.