Polyester type powder coating composition

Details Polyester type powder coating composition Polyester type powder coating composition

C - Chemistry, Metallurgy

08

G

402/123, 117/183

C08G 63/52 (2006.01) C08G 63/21 (2006.01) C08G 63/50 (2006.01) C08G 63/553 (2006.01) C08G 63/66 (2006.01) C08G 63/682 (2006.01) C08L 67/06 (2006.01) C09D 167/00 (2006.01)

Patent

CA 1094740

ABSTRACT OF THE DISCLOSURE A novel polyester type powder coating composition which includes a specific self-hardening polyester of air-hardening type comprising as main ester-constituting monomer units, (1) at least one polycarboxylic acid component containing at least 10 mole %, based on the polycarboxylic acid component, of at least one aromatic polycarboxylic acid component (A) and (2) at least one polyhydric alcohol component, having in its main chain at least one terminal blocked with a monofunctional unsaturated alicyclic compound component (B) and having a soft- ening point of 30 to 150°C. This composition is excellent in storage stability and adaptability to either thin coating or thick coating, and when it is applied onto an article to be coated and baked at a temperature of 170 to 230°C. for 5 to 30 minutes, a coating excellent in appearance, mechanical strength, gloss and reflection sharpness can be formed ad- vantageously without generating undesired gases at the baking.

297640

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