C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/06 (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 2361333
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 automotive coatings. The coating composition includes polyisocyanate, polyester polyol and melamine components, where more than half of total composition solids include the polyester polyol and melamine components. The polyisocyanate component includes an aliphatic polyisocyanate. The composition may be formulated as a two-pack or one-pack coating composition, wherein the isocyanate 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 de polyisocyanate, de polyester polyol et de mélamine, plus de la moitié des solides de la composition totale comprenant lesdits composants de polyester polyol et de mélamine. Les composants de polyisocyanate 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.
Nordstrom John David
Uhlianuk Peter William
Bennett Jones Llp
E.i. Du Pont de Nemours And Company
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