Process for the preparation of binders for cathodically depositable paints, the binders produced, and to the use thereof in paints

US5101000A · kind A · utility

Assignee

• Vianova Kunstharz, AG · AU

Inventors

• Willibald Paar · Graz, AT
• Helmut Honig · Geretsried, DE
• Georg Pampouchidis · Graz, AT

Key dates

• Filing date: Aug 21, 1990
• Grant date: Mar 31, 1992
• Expiry date: Aug 21, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/4434
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the preparation of water-dilutable binders for cathodically depositable electrodeposition paints wherein 5 to 60 mol % of the epoxy groups of a resinous compound having at least two 1,2-epoxy groups per molecule are reacted with disecondary diamines obtained by the reaction of polypropylene glycol diglycidylethers or polypropylene glycol diacrylates with compounds containing a primary amino group is described. The binders prepared in accordance with the invention are suitable, in particular, for formulating electrodeposition paints, to provide films having a greater layer thickness under normal deposition conditions.