C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
402/131, 260/248
C07D 251/34 (2006.01) C08G 18/79 (2006.01)
Patent
CA 1286296
ISOCYANURATE GROUP-CONTAINING POLYISOCYANATES, A PROCESS FOR THE PRODUCTION THEREOF AND THE USE THEREOF AS ISOCYANATE COMPONENT IN POLYURETHANE LACQUERS ABSTRACT OF THE DISCLOSURE 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 poly- isocyanate polyaddition products, preferably two- component polyurethane stoving lacquers.
501936
Halpaap Reinhard
Klein Gerhard
Kreuder Hans-Joachim
Muller Hanns Peter
Pedain Josef
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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