Thermosetting powder coating compositions

Details Thermosetting powder coating compositions Thermosetting powder coating compositions

1981-06-29

1982-10-05

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

525440, 525443, 528274, 528308, 528309, C08G 6316

Patent

active

043529240

ABSTRACT:
Disclosed are crystalline polyesters having low melt viscosities and thermosetting compositions comprising these polyesters. The compositions are especially useful as powder coatings. The polyesters are derived from 1,4-butanediol and trans-1,4-cyclohexanedicarboxylic acid. The polyesters are characterized as having a molecular weight of about 700-3000, a melt viscosity of about 50-3500 cps at 160.degree. C. and a hydroxyl number of about 35-160. The thermosetting composition contains a curing agent which is reactive with the hydroxyl groups to crosslink the polyester.

REFERENCES:
patent: 3686360 (1972-08-01), Cunningham
patent: 3842021 (1974-10-01), Grant et al.
patent: 4075180 (1978-02-01), Davis et al.
patent: 4275189 (1981-06-01), Danick et al.

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