Preparation of low-odor-storage-stable monomer-containing polyisocyanurates based on isophorone diisocyante

   
   

Low-odor, storage-stable monomer-containing polyisocyanurate is prepared from isophorone diisocyanate by conducting a partial trimerization for 3 minutes to 3 hours in the presence of 0.05-2% by weight of a catalyst, based on the weight of the diisocyanate, the catalyst having the formula [R--NX.sub.3 ].sup.m.sym. mY.sup..crclbar. wherein Y.sup..crclbar. is a carboxylic acid anion of 4-8 carbons, R is a .beta.-hydroxyalkyl group of 2-6 carbons, X is an alkylene group of 2-3 carbons and m is a number from 1.0 to 2.0. The three radicals X form a ring with the quaternary nitrogen by way of a common nitrogen atom, which may be partly .beta.-hydroxyalkylated, said ring optionally having an OH group positioned .alpha., .beta. or .gamma. to the nitrogen. The reaction proceeds at a temperature of 0-160.degree. C.

Низк-zapax, storage-stable мономер-soderja polyisocyanurate подготовлен от diisocyanate isophorone путем дирижировать частично trimerization на 3 минуты к 3 часа in the presence of 0.05-2% by weight of катализатор, основанное на весе diisocyanate, катализатора имея формулу [ р -- NX.sub.3 ].sup.m.sym. mY.sup..crclbar. при котором Y.sup..crclbar. карбоновый кисловочный анион 4-8 углеродов, р будет beta.-$$ET-beta.-hydroxyalkyl группа в составе 2-6 углеродов, х будет группа в составе алкилена 2-3 углерода и м будет номер от 1.0 до 2.0. 3 радикала x формируют кольцо с кватернарным азотом by way of общий атом азота, который может быть отчасти beta.-hydroxyalkylated, сказанное кольцо опционно имея alpha. oh расположенное группой, beta. или gamma. к азоту. Реакция продолжает на температуре 0-160.degree. Ч.

 
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