Acrylic melamine coating compositions

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 133/06 (2006.01) C09D 7/12 (2006.01) C09D 161/30 (2006.01) C09D 167/00 (2006.01) C09D 169/00 (2006.01)

Patent

CA 2401506

An acrylic melamine coating composition characterized by improved impact resistance which comprises: a) a polyol having an equivalent weight of from 300-1300: b) said polyol having incorporated therein from 2 to 50 % by weight of a polytrimethy-lene carbonate polyol: c) a melamine crosslinking agent; d) optionally a catalyst: and e) optionally pigments and other additives commonly used in coatings; and a melamine/urea formaldehyde polytrimethylene carbonate coating composition that is prepared without acrylic.

L'invention concerne une composition de revêtement de mélamine acrylique caractérisée par une résistance d'impact accrue, comprenant: a) un polyol présentant un poids équivalent compris entre 300 et 1300, b) ledit polyol contenant 2 à 50 % en poids de polyol carbonate polytriméthylène, c) un agent de réticulation de mélamine, d) éventuellement un catalyseur, et e) éventuellement des pigments ou d'autres additifs généralement utilisés dans des revêtements. L'invention concerne également une composition de carbonate polytriméthylène mélamine/urée formaldéhyde préparée sans acrylique.

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