Polyesters and their use as additives in coating compositions

US5646236A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Markus Schafheutle · Hochheim, DE
• Achim Voelker · Offenbach, DE
• Susanne Wehner · Villmar, DE
• Gerd Walz · Wiesbaden, DE
• Joachim Zoeller

Key dates

• Filing date: Jan 30, 1995
• Grant date: Jul 8, 1997
• Expiry date: Jan 30, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/4492
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyesters obtained by reacting from 5 to 50 parts of at least one linear or branched, aliphatic or cycloaliphatic, at least dihydric alcohol, from 2 to 40 parts of at least one at least dibasic, aromatic carboxylic acid, from 0 to 40 parts of at least one 2-alkenyldicarboxylic anhydride, from 10 to 30 parts of at least one at least dibasic, linear or branched, aliphatic carboxylic acid, from 0 to 15 parts of an aliphatic, linear or branched hydroxy acid, from 0 to 15 parts of an aliphatic, linear or branched polyamine having at least one primary and at least one secondary or tertiary amino group, from 0 to 15 parts of a glycidyl ester of a branched, aliphatic monocarboxylic acid or of a glycidyl ether of a branched, aliphatic alcohol, and from 0 to 15 parts of polyhydroxyamine are useful, for example, as additives in coating compositions.