C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
402/131, 260/335
C07D 229/00 (2006.01) C08G 18/18 (2006.01) C08G 18/79 (2006.01)
Patent
CA 1279325
A PROCESS FOR THE PRODUCTION OF URETDIONE GROUP- CONTAINING COMPOUNDS, THE COMPOUNDS OBTAINED ACCORDING TO THIS PROCESS AND THE USE THEREOF IN THE PRODUCTION OF POLYURETHANE PLASTICS MATERIAL ABSTRACT OF THE DISCLOSURE The invention is directed to a process for the production of uretdione group-containing compounds by dimerizing at least a part of the isocyanate groups of organic isocyanates in the presence of compounds containing phosphorus-nitrogen bonds as dimerization catalysts, characterized in that the reaction is carried out in the presence, as co-catalysts, of H-active organic compounds having a pKa-value of at least 6, which have at least one hydrogen atom bound to oxygen, sulphur or nitrogen. The invention also relates to the uretdione group-containing compounds obtained according to this process and to their use for the production of plastics materials according to the isocyanate-polyaddition process.
491828
Breidenbach Peter
Engbert Theodor
Frohlich Jurg
Kubitza Werner
Mennicken Gerhard
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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