C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 251/34 (2006.01) C08G 18/79 (2006.01)
Patent
CA 2139376
Polyisocyanates containing isocy- anurate groups are prepared by a partial trimerization of (cyclo)aliphatic diisocyanates in the presence of at least one trimerization catalyst selected from the group consisting of te- traalkylammonium alkyl carbonates of the formula (I) (see formula I) (quaternary ammonioalkyl) carbonates having a betaine structure of the formula (II) (see formula II) and the preferred use of the polyisocyanates containing isocyanu- rate groups which are obtainable in this way is as polyisocyanate component in polyurethane finishes.
Becker Rainer
Brandt Peter
Bruchmann Bernd
Laqua Gerhard
Merger Franz
Basf Aktiengesellschaft
Becker Rainer
Brandt Peter
Bruchmann Bernd
Laqua Gerhard
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