Patent · US Expired

Water dispersible binders for cationic electra-coating and method for preparation

US4724254A · kind A · utility

6Cited by

5References

19Claims

0Family size

Assignee

BASF Farben Fasern Aktiengesellschaft · DE

Inventors

Michael Geist · Munster, DE
Gunther Ott · Hachenburg, DE
Georg Schon · Everswinkel, DE

Key dates

Filing date	Mar 10, 1987
Grant date	Feb 9, 1988
Priority date	—
Expiry date	Mar 10, 2007

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D5/4434
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to water-dispersible binding agents for cationic electro-immersion varnishes on the basis of modified epoxy resins. The binding agents are reaction products of PA0 (A) low-molecular epoxy resins containing aromatic groups, with an equivalent epoxy weight of less than 375, PA0 (B) aliphatic and/or alicyclic polyfunctional alcohols and/or carboxylic acids with a molecular weight less than 350, where the intermediate product obtained from (A) and (B) has a content of aromatic groups of 10 to 45%, calculated as a phenylene group, PA0 (C) polyfunctional alcohols, carboxylic acids and/or SH-compounds with a molecular weight of 500 to 5000, and PA0 (D) amino alcohols with at least one concealed primary or a tertiary nitrogen atom.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.