Powder coating cross-linking agents of high functionality...

Details Powder coating cross-linking agents of high functionality... Powder coating cross-linking agents of high functionality...

C - Chemistry, Metallurgy

08

G

C08G 18/80 (2006.01) C08G 18/10 (2006.01) C08G 18/42 (2006.01) C08G 18/78 (2006.01) C08G 18/79 (2006.01) C09D 5/44 (2006.01) C09D 5/46 (2006.01) C09D 175/06 (2006.01)

Patent

CA 2317689

The invention relates to new high-functional polyaddition compounds which contain free isocyanate groups with an average isocyanate functionality of 2.1 to 8.0, a con- centration of uretdione of 10 to 18 wt.%, a concentration of urethane of 10 to 20 wt.% and a concentration of ester groups -CO-O and/or carbonate groups -O-CO-O of 1 to 17 wt.%, a process for the preparation thereof and their use as starting com- ponents for the preparation of polyurethane plastics, in particular as cross- linking agents for heat-curable powder coatings

L'invention concerne de nouveaux composés de polyaddition haute-fonctionnelle qui contiennent des groupes isocyanates libres avec une fonctionnalité isocyanate moyenne de 2,1 à 8,0, une concentration de l'uretdione de 10 à 18 % en poids, Une concentration d'uréthane de 10 à 20 % en poids et une concentration de l'ester de groupes-CO-O et / ou du carbonate de groupes-O-CO- O de 1 à 17 % en poids, un procédé pour la préparation de celle-ci et leur utilisation comme composants de départ pour la préparation des plastiques de polyuréthane, en particulier des agents de réticulation pour revêtements en poudre thermodurcissables.

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