Process for the preparation of uretdione group containing...

Details Process for the preparation of uretdione group containing... Process for the preparation of uretdione group containing...

C - Chemistry, Metallurgy

07

D

402/159, 260/335

C07D 229/00 (2006.01) C08G 18/78 (2006.01) C08G 18/79 (2006.01)

Patent

CA 2023667

PROCESS FOR THE PREPARATION OF URETDIONE GROUP CONTAINING POLYISOCYANATES ABSTRACT OF THE DISCLOSURE The present invention relates to a process for the preparation of uretdione group containing polyisocyanates comprising reacting monomeric aromatic diisocyanates in the presence of 1,2-dimethylimidazole used as a catalyst in an inert organic solvent whereby the weight ratio of solvent to diisocyanate lies in a range of from 0.1:1 to 2:1. -7-

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