Polyester type powder coating composition

Details Polyester type powder coating composition Polyester type powder coating composition

1978-02-16

1979-12-25

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

260 40R, 260 40P, 525474, 528176, 525434, 528190, 528192, 528194, 528296, 528298, 528299, 528304, 528280, C08G 6376

Patent

active

041806522

ABSTRACT:
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 softening point of 30.degree. to 150.degree. 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.degree. to 230.degree. C. for 5 to 30 minutes, a coating excellent in appearance, mechanical strength, gloss and reflection sharpness can be formed advantageously without generating undesired gases at the baking.

REFERENCES:
patent: 3337498 (1967-08-01), Hogsed et al.
patent: 3340327 (1967-09-01), Spellberg et al.
patent: 3361716 (1968-01-01), Parham
patent: 3448072 (1969-06-01), Ashby
patent: 3590086 (1971-06-01), Gourse
patent: 3933757 (1976-01-01), Pratt et al.
patent: 4066606 (1978-01-01), Vargiu et al.

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