Powder coating

Details Powder coating Powder coating

1983-03-24

1984-07-31

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...

525440, 525444, 525448, 528272, 528297, 528302, C08G 6376

Patent

active

044631405

ABSTRACT:
Powder coatings and a powder composition having a valuable combination of characteristics are described, composed of a homogeneous mixture of between 1.9 and 9.0 wt. % of a diglycidyl phthalate and between 91.0 and 98.1 wt. % of a polyester, wherein said polyester has (a) an acid number between 10 and 30 mg KOH/g, (b) a hydroxyl number less than 15 mg KOH/g, (c) a theoretical number-average molecular weight between 3,750 and 12,500 and (d) a glass transition temperature between 48.degree. and 85.degree. C.

REFERENCES:
patent: 3621074 (1968-11-01), Siggel et al.
patent: 3970621 (1976-07-01), Kondo et al.
patent: 4085159 (1978-04-01), Marsiat
patent: 4147737 (1979-04-01), Sein et al.
patent: 4288569 (1981-09-01), Rottmaier et al.

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