Preparation of low-odor storage-stable monomercontaining...

Details Preparation of low-odor storage-stable monomercontaining... Preparation of low-odor storage-stable monomercontaining...

C - Chemistry, Metallurgy

08

G

C08G 18/09 (2006.01) C07D 251/34 (2006.01) C08G 18/02 (2006.01) C08G 18/18 (2006.01) C08G 18/72 (2006.01)

Patent

CA 2392153

A process for preparing low-odor storage-stable monomer-containing polyisocyanurates from isophorone diisocyanate, which comprises conducting the partial trimerization over from 3 minutes to 3 hours in the presence of 0.05-2% by weight, based on the weight of the diisocyanate, of a catalyst of the general formula Image (where Y.crclbar. is a carboxylic acid anion of 4-8 carbons and R is a .beta.-hydroxyalkyl group of 2-6 carbons and X is an alkylene group of 2-3 carbons, the three radicals X forming a tricyclic ring with the quaternary nitrogen by way of a common nitrogen atom, which may be partly .beta.-hydroxyalkylated, the tricyclic ring optionally having an OH group in an .alpha., .beta. or .gamma. position to the nitrogen and m is a number from 1.0 to 2.0) at a temperature of 0-160°C.

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