Scratch resistant curable coating composition

Details Scratch resistant curable coating composition Scratch resistant curable coating composition

C - Chemistry, Metallurgy

08

F

C08F 8/00 (2006.01)

Patent

CA 2600078

This invention relates to a curable composition comprising a solvent solution of a mixture comprising: (i) at least one hydroxy-functional acrylic polymer; and (ii) optionally, at least one low molecular weight polyol reactive diluent; (iii) at least one polyisocyanate; (iv) an ammo-functional silane; (v) a metal catalyst, such as a tin compound, for accelerating the isocyanate/hydroxyl reaction; and (vi) a low boiling acid.

Cette invention concerne une composition durcissable comprenant une solution de solvant constituée comme suit: (i) au moins un polymère acrylique à fonction hydroxy; (ii) éventuellement au moins un diluant réactif de polyol à faible poids moléculaire; (iii) au moins un polyisocyanate; (iv) un silane amino-functionnel; (v) un catalyseur métallique tel qu'un composé d'étain permettant d'accélérer la réaction isocyanate/hydroxyle; et (vi) un acide à faible point d'ébullition.

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