Cross-linkable polymer resins and use thereof as binders for coating agents

US4639499A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Peter Hohlein · Kempen, DE
• Manfred Schmidt · Krefeld, DE
• Josef Pedain · Cologne, DE
• Bernd Riberi · Odenthal, DE
• Michael Sonntag · Odenthal, DE

Key dates

• Filing date: Jul 18, 1985
• Grant date: Jan 27, 1987
• Expiry date: Jul 18, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D157/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention is directed to cross-linkable, hydroxyl group-containing polymer resins which are obtained by copolymerizing olefinically-unsaturated monomers and are suitable as binder components for lacquers, the polymer resins having a hydroxyl number of about 20 to 400, an average osmometrically-determined molecular weight of about 500 to 30,000 and a molecular inhomogeneity U of about 0.5 to 15, characterized in that they contain about 0.2 to 80% by weight, preferably about 10 to 70% by weight, based on the total weight of the copolymers, of incorporated monomers selected from olefinically- and acetylenically-unsaturated aliphatic diols having 4 carbon atoms, the ether group-containing alkoxylation products thereof with a hydroxyl number of about 50 to 900, the reaction products of these diols with .epsilon.-caprolactone in a mol ratio of diol:-caprolactone of about 1:0.2 to 1:10 and any mixtures of these components. The present invention is also directed to the use of the above polymer resins as binders for coating compositions.