Coating composition and the use thereof in processes for producing multi-layer coatings

US5473032A · kind A · utility

Assignee

• Herberts Gesellschaft mit beschrankter Haftung · DE

Inventors

• Klaus Bederke · Sprockhövel, DE
• Hermann Kerber · Wuppertal, DE
• Olaf Ley · Wuppertal, DE
• Michael Prescher
• Petra Kochert-Muhlenbeck · Wuppertal, DE

Key dates

• Filing date: May 24, 1993
• Grant date: Dec 5, 1995
• Expiry date: May 24, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S524/923
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Coating composition containing one or several (meth)acrylic copolymers having hydroxyl groups, as well as one or several solvents and, optionally, water, special-effect pigments and/or coloring pigments, fillers and/or conventional lacquering additives, whereby the (meth)acrylic copolymer is essentially constructed from units based on the following monomers: PA0 a) 0.5-10.0% by weight of amides and/or N-substituted amides of acrylic acid and/or methacrylic acid, PA0 b) 5.0-30.0% by weight of phenylalkyl esters of acrylic acid and/or methacrylic acid, PA0 c) 10.0-30.0% by weight of hydroxyalkyl esters of acrylic acid and/or methacrylic acid having 2-8 C-atoms in the hydroxyalkyl residue, PA0 d) 0.6-7.5% by weight of acrylic acid and/or methacrylic acid, and PA0 e) 30.0-83.9% by weight of alkyl esters of acrylic acid and/or methacrylic acid having 1-18 C-atoms in the alkyl residue, and whereby the sum of components a) to e) amounts in each case to 100. The coating compositions are particularly suitable for producing layers of base lacquer in multi-layer lacquer coatings, in particular for series and repair lacquering in the motor-vehicle industry.