Modified acid polyesters and their use as curing agents in heat-curable binders

US5420227A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Armin Pfeil · Kaufering, DE
• Paul Oberressl · Wiesbaden, DE
• Reiner-Kurt Illgen · Wiesbaden, DE

Key dates

• Filing date: Dec 10, 1993
• Grant date: May 30, 1995
• Expiry date: Dec 10, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D163/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Modified acid polyesters obtained by reaction of polyols with unsaturated polycarboxylic acids or anhydrides thereof and conjugated dienoic acids. These products are suitable as curing agents for epoxy resins, in particular for curing tin can finishes.