Dispersion product for producting an electrophoretically precipitable dipping varnish

US6201043A · kind A · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Wolfgang Bremser · Münster, DE
• Frank Strickmann · Steinfurt, DE
• Gunther Ott · Hachenburg, DE
• Karl-Heinz Grosse-Brinkhaus · Nottuln, DE

Key dates

• Filing date: Apr 27, 1999
• Grant date: Mar 13, 2001
• Expiry date: Apr 27, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/4473
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to aqueous dispersions. They are obtainable by polymerizing an ethylenically unsaturated monomer or a mixture of ethylenically unsaturated monmers [sic] in an aqueous solution of an at least partially protonated epoxide-amine adduct. It is characterized in that the epoxide-amine adduct is for its part obtainable by reacting (A) a glycidyl ether of a polyphenol that contains on statistical average at least one epoxide group in the molecule, or a mixture of such glycidyl ethers, (B) a polygycidyl [sic] ether of a polyol that contains on statistical average more than 1.0 epoxide groups in the molecule, or a mixture of such polyglycidyl ethers, and (C) a compound that contains a primary amino group in the molecule, or a mixture of such compounds, to give the epoxide-amine adduct, components (A) and (B) being employed in a ratio of equivalents of from 1.0:0.5 to 1.0:8.0 and from 0.3 to 0.7 mol of component (C) being employed per equivalent of epoxide groups of (A) and (B).