Synthetic resin with basic nitrogen groups, preparation and use thereof

US4981884A · kind A · utility

Assignee

• BASF SE

Inventors

• Thomas Perner · Eßlingen, DE
• Rolf Osterloh · Lechenich, DE
• Eberhard Schupp · Schwetzingen, DE
• Thomas Schwerzel · Meckenheim, DE
• Klaas Ahlers · Munster, DE

Key dates

• Filing date: Jun 23, 1988
• Grant date: Jan 1, 1991
• Expiry date: Jun 23, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/4434
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A synthetic resin which carries basic nitrogen groups and is water-dilutable by protonation with an acid, containing PA1 (A) a chain-extended, amine-modified epoxy resin obtainable by reacting PA1 (a.sub.1) an epoxy resin having an average molecular weight M.sub.n of from 300 to 6,000 and on average from 1.5 to 3.0 epoxy groups per molecule with PA1 (a.sub.2) a diketimine of a diprimary diamine, which diprimary diamine contains no further groups reactive with epoxy groups under mild conditions and PA1 (B) an amino-modified epoxy resin obtainable by reacting PA1 b.sub.1) an epoxy resin having an average molecular weight M.sub.n of from 800 to 6,000 and on average from 1.5 to 3.0 epoxy groups per molecule with PA1 (b.sub.2) a secondary amine or a secondary-tertiary diamine, a ketimine of a primary monoamine or a ketimine of a primary/tertiary diamine or a mixture of these (b.sub.2) components, with the proviso that (A) and (B) are different.