High solids acid etch resistant clear coating composition

Details High solids acid etch resistant clear coating composition High solids acid etch resistant clear coating composition

C - Chemistry, Metallurgy

08

G

C08G 18/28 (2006.01) C08G 18/38 (2006.01) C08G 18/40 (2006.01) C08G 18/42 (2006.01) C08G 18/44 (2006.01) C08G 18/58 (2006.01) C08G 18/62 (2006.01) C08G 18/79 (2006.01) C08G 18/80 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2361299

The present invention provides for an etch and mar resistant low VOC clear coating composition most suitable for use as a top clear coat in multi-layered OEM or refinish automative coatings. The coating composition includes isocyanate, silane and melamine components. The isocyanate component includes an aliphatic polyisocyanate. The composition may be formulated as a two-pack or one-pack coating composition, wherein the isocyanante functionalities are blocked with a blocker such as a mono-alcohol.

L'invention concerne une composition de revêtement incolore à faible teneur en composants organiques volatiles (VOC), résistant aux éraflures et au mordançage par acide, convenant parfaitement comme revêtement incolore supérieur pour des revêtements multicouche dans le marché automobile d'équipement d'origine et pour des revêtements de remise en état. La composition de revêtement comprend des composants d'isocyanate, de silane, et de mélamine. Les composants d'isocyanate comprennent un polyisocyanate aliphatique. La composition peut être formulée sous forme d'une composition de revêtement en emballage simple ou double, les fonctionnalités isocyanate étant bloquées par un élément de blocage, tel qu'un mono-alcool.

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