Thermosetting powder coating compositions

Details Thermosetting powder coating compositions Thermosetting powder coating compositions

1983-02-08

1984-04-10

Lieberman, Allan

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

Synthetic resins

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

525438, 525443, 528296, 524904, C08L 6300, C08L 6128, C08L 6702

Patent

active

044422709

ABSTRACT:
Disclosed are crystalline polyesters having low melt viscosities, and thermosetting compositions comprising these polyesters. The compositions are especially useful as powder coatings. At least 40 mole percent of the acid moiety is a terephthalic or isophthalic acid moiety, and the polyester contains as moieties of the dihydric alcohol about 40-100 mole percent 1,6-hexanediol, the polyester being further characterized as having a molecular weight of about 700-3000, a melt viscosity of about 50-3000 cps at 160.degree. C. and a hydroxyl number of about 30-160.

REFERENCES:
patent: 3185669 (1965-05-01), McKinney
patent: 3907733 (1975-09-01), Jackson, Jr. et al.
patent: 4094721 (1978-06-01), Sturm et al.
patent: 4197353 (1980-04-01), Tobias et al.
patent: 4375539 (1983-03-01), McBride et al.
Chemical Abstracts, 90:40330x, 1979.

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