Polyisocyanates containing uretdione groups

Details Polyisocyanates containing uretdione groups Polyisocyanates containing uretdione groups

C - Chemistry, Metallurgy

07

D

C07D 229/00 (2006.01) C07D 403/14 (2006.01) C08G 18/10 (2006.01) C08G 18/79 (2006.01) C08G 18/80 (2006.01) C08L 75/04 (2006.01) C09D 5/03 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2169715

Polyisocyanates which contain uretdione groups and comprise A) from 55 to 87% by weight of uretdione, B) from 10 to 30% by weight of blocking agent, C) from 3 to 30% by weight of polyol having more than two hydroxyl groups and/or chain extender having more than two hydroxyl groups, the polyisocyanates containing more than two terminal, partially or fully blocked isocyanate groups and having molecular weight of from 1000 to 10,000.

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