Preparation of self-crosslinking synthetic resins

US4599371A · kind A · utility

Assignee

• BASF SE

Inventors

• Werner Loch · Erpolzheim, DE
• Eberhard Schupp · Schwetzingen, DE
• Rolf Osterloh · Lechenich, DE
• Arnold Dobbelstein · Cologne, DE
• Klaas Ahlers · Munster, DE

Key dates

• Filing date: Aug 17, 1984
• Grant date: Jul 8, 1986
• Expiry date: Aug 17, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/4419
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Synthetic resins which are self-crosslinking under the action of heat have on average two phenolic hydroxyl groups per molecule and are prepared by reacting a reaction product of an epoxy resin and a bifunctional phenol with formaldehyde and a mixture of secondary amines. After they have been protonated with an acid, the resins are suitable as cathodic electrocoating binders.