Blocked polyisocyanates with improved thermal stability

Details Blocked polyisocyanates with improved thermal stability Blocked polyisocyanates with improved thermal stability

C - Chemistry, Metallurgy

07

D

C07D 233/78 (2006.01) C07C 275/16 (2006.01) C07C 275/40 (2006.01) C07C 275/42 (2006.01) C08G 18/78 (2006.01) C08G 18/80 (2006.01) C09D 175/00 (2006.01)

Patent

CA 2172675

The present invention relates to blocked polyisocyanates containing at least two isocyanate groups which are reversibly blocked with a monofunctional blocking agent for isocyanate groups and at least two isocyanate groups in the form of urea groups, which may be subsequently converted to thermally stable hydantoin groups. The present invention also relates to one-component coating compositions containing these blocked polyisocyanates and compounds containing at least two isocyanate-reactive groups.

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