Process for preparing low-odor and storage-stable...

Details Process for preparing low-odor and storage-stable... Process for preparing low-odor and storage-stable...

C - Chemistry, Metallurgy

08

G

C08G 18/09 (2006.01) C08G 18/02 (2006.01) C08G 18/18 (2006.01) C08G 18/20 (2006.01)

Patent

CA 2352688

Process for preparing low-odor and storage-stable monomer-containing polyisocyanurates from isophorone diisocyanate Process for preparing low-odor and storage-stable monomer-containing polyisocyanurates from isophorone diisocyanate by partial trimerization over a period of from 30 seconds to 2 hours in the presence of from 0.01 to 2% by weight, based on the weight of the diisocyanate, of a catalyst of the formula Image where R and X are butyl groups and Y- is CH3COO-, or R is a benzyl group and Y- is a carboxylate anion having from 4 to 8 carbon atoms and in this case X is an alkylene group having from 2 to 3 carbon atoms, with the three radicals X together with the quaternary nitrogen forming, via a common carbon atom, a tricyclic structure which has at least one OH group in the a or (3 or y position relative to the nitrogen, at a temperature of from 0 to 200°C.

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