Acid etch resistant coatings

C - Chemistry – Metallurgy – 08 – G

Patent

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402/157, 400/545

C08G 18/06 (2006.01) C07C 271/24 (2006.01) C08G 18/32 (2006.01) C08G 18/38 (2006.01) C08G 18/64 (2006.01) C08G 18/78 (2006.01) C08G 18/79 (2006.01) C08G 18/80 (2006.01) C08L 61/20 (2006.01) C08L 75/04 (2006.01) C09D 161/20 (2006.01) C09D 175/04 (2006.01) G01F 1/692 (2006.01)

Patent

CA 2020988

A high solids coating composition suitable for use, for example, as a high performance automotive coating is provided, which comprises (1) a particular polyurethane polyol which is the reaction product of an asynunetric diol component and an isocyanate component, and (2) an hydroxyl groups-reactive crosslinking agent. When formulated as a one-pack coating preferably with an aminoplast crosslinking agent, these coating compositions possess a number of desirable properties including excellent acid etch resistance.

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