Isocyanurate group-containing polyisocyanates

Details Isocyanurate group-containing polyisocyanates Isocyanurate group-containing polyisocyanates

1987-07-16

1989-07-25

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D25134

Patent

active

048515310

ABSTRACT:
The present invention is directed to isocyanato isocyanurates prepared from diisocyanates which contain a sterically unhindered isocyanate group bound to a primary aliphatic carbon atom and a sterically hindered isocyanate group which is bound to a tertiary carbon atom forming part of a cycloaliphatic ring system, said diisocyanate having an NCO content of about 20 to 50% by weight. The present invention is further directed to a process for preparing these isocyanato isocyanurates by catalytic trimerization and the use of the isocyanato isocyanurates in a process for the production of polyisocyanate polyaddition products, preferably two-component polyurethane stoving lacquers.

REFERENCES:
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patent: 4265798 (1981-05-01), Mishra
patent: 4288586 (1981-09-01), Bock et al.
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patent: 4419513 (1983-12-01), Breidenbach et al.
patent: 4454317 (1984-06-01), Disteldorf
patent: 4469867 (1984-09-01), Disteldorf
patent: 4487928 (1984-12-01), Richter et al.
patent: 4537961 (1985-08-01), Robin
patent: 4613685 (1986-09-01), Klein

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