Epoxide resin-modified polyesters derived from carboxyl polyol

US5183835A · kind A · utility

Assignee

• Basf Lacke & Farben Aktiengesellschaft · DE

Inventors

• Lutz-Werner Gross · Haltern, DE
• Ulrich Poth · Munster, DE
• Dieter Hille · Bensberg, DE
• Klaus Weidemeier · Munster, DE

Key dates

• Filing date: Nov 21, 1990
• Grant date: Feb 2, 1993
• Expiry date: Nov 21, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D163/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A water-dilutable coating comprising a binder obtained from an epoxide resin-modified polyester possessing free carboxyl groups prepared from the reaction of: PA0 A) a polyester polymerized from: PA1 a.sub.1) a polycarboxylic acid containing at least three carboxyl groups and/or PA1 a.sub.2) a polyol containing at least one carboxyl group and PA1 a.sub.3) a polycarboxylic acid containing two carboxyl groups and PA1 a.sub.4) a polyol; wherein the polyester contains (cyclo)aliphatic elements having at least six carbon atoms; and PA0 B) from 0.3-1.5 equivalents per polyester molecule of a bisphenol epoxide resin or a reaction product thereof containing at least one epoxide group per molecule with a carboxylic acid.