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

260/335

C07D 229/00 (2006.01) C07D 521/00 (2006.01) C08G 18/79 (2006.01)

Patent

CA 2023148

ABSTRACT OF THE DISCLOSURE The invention deals with a process for the preparation of uretdione group containing polyisocyanates comprising reacting monomeric aromatic diisocyanates in the presence of a catalyst whereby imidazoles or benzimidazoles having general structural formulas I or II are used as catalysts Image I Image II or their mixtures are used whereby R1 through R7 have the meaning cited in claim 1. -9-

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