Acid functional and epoxy functional polyester resins

Details Acid functional and epoxy functional polyester resins Acid functional and epoxy functional polyester resins

1998-03-25

2000-11-07

Boykin, Terressa M.

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

Synthetic resins

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

525533, 525934, C08F 2000

Patent

active

061438383

ABSTRACT:
A linear or branched polyglycidylester resin produced by reacting a carboxyl functional polyester resin with an excess epihalohydrin in the presence of a suitable base, wherein the carboxyl functional polyester resin is produced by reacting at a temperature of from 100 to 240.degree. C. at least one dicarboxylic acid compound of the formula ##STR1## wherein x.gtoreq.1 and wherein R.sub.1 and R.sub.2 each represent an alkyl group having from 1 to 4 carbon atoms or wherein R.sub.1 and R.sub.2 form together with the group .about.CH--(CH.sub.2).sub.x --CH.about. a cycloalkylgroup, with at least one diol compound comprising two aliphatic hydroxyl groups, wherein each hydroxyl group independently is a primary or a secondary hydroxyl group, and wherein the number of carboxylic acid groups and anhydrides thereof exceeds the number of hydroxyl groups. The reaction continues until essentially all the hydroxyl groups initially present in the reaction mixture have been reacted.

REFERENCES:
patent: 5034432 (1991-07-01), Ueno et al.
patent: 5777045 (1998-07-01), Carr
"New Two-Component Powder Coating Binders: Polyester-Acrylate Hybrid as TGIC Cure Alternative," by T. Agawa and E. D. Dumain, Waterborne, Higher-Solids, and Powder Coatings Symposium, Feb. 5-7, 1997, New Orleans, Louisiana, USA, pp. 342-353.
"Water Based Coatings With Excellent Saponification Stability," by H. Blum, P. Hohlein, and J. Meixner, XIIIth International Conference in Organic Coatings Science and Technology, Jul. 7-11, 1987, Athens, Greece, pp. 173-197.

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