Polymers suitable as binders

US5389705A · kind A · utility

Assignee

• Basf Lacke & Farben Aktiengesellschaft · DE

Inventors

• Klaus Huemke · Friedelsheim, DE
• Helmut Fobbe · Munster, DE
• Konrad Knoll · Mannheim, DE

Key dates

• Filing date: Aug 6, 1993
• Grant date: Feb 14, 1995
• Expiry date: Aug 6, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D163/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Novel polymers which are suitable as binders are obtainable by reacting PA1 (A) a base resin which has an average molecular weight M.sub.w of from 200 to 5,000 and contains on average from 1 to 3 epoxy or isocyanato groups as the reactive groups per molecule with PA1 (B) a mixture of PA2 (B1) 5 to 50% by weight of polyisobutylene which is terminated with primary amino groups and has an average molecular weight M.sub.w of from 500 to 5,000 and PA2 (B2) 5-95% by weight of an amidoamine which carries primary amino groups and is obtainable by condensation of diprimary diamines of 2 to 20 carbon atoms with aliphatic C.sub.2 -C.sub.44 -dicarboxylic acids, the amounts being such that from 1 to 5 equivalents of primary amino groups of (B) are present per equivalent of reactive groups of (A).