Curable coating agents and process for the production of scratch-resistant coatings on plastics

US4336309A · kind A · utility

Assignee

• BASF SE

Inventors

• Klaus-Peter Jackel · Schifferstadt, DE
• Gunter Heil · Ludwigshafen, DE
• Herbert Spoor · Schifferstadt, DE

Key dates

• Filing date: Nov 6, 1980
• Grant date: Jun 22, 1982
• Expiry date: Nov 6, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Curable coating agents, a process for the production of scratch-resistant coatings on plastics, and articles coated by this process. The coating agents are polycondensates of PA1 a reaction product, containing two or more carbon-carbon double bonds and one or more hydroxyl or alkoxy groups per molecule, obtained from an olefinically unsaturated silane containing 2 or more hydroxyl or alkoxy groups, whose olefinically unsaturated organic radical is bonded via a C-Si bond, and a hydroxyl-containing .alpha., .beta.-olefinically unsaturated monomer, PA1 an olefinically unsaturated silane of the general formula EQU R.sup.1 --Si(OR.sup.2).sub.3 PA1 where R.sup.1 is a vinyl radical or an alkyl acrylate or alkyl methacrylate radical bonded to the Si atom via a C--Si bond and R.sup.2 is hydrogen or a saturated hydrocarbon radical, and PA1 a saturated silane of the general formula ##STR1## where R.sup.3 and R.sup.4 are saturated or aromatic hydrocarbon radicals, PA1 with or without an epoxide-containing silane which also contains hydroxyl or alkoxy groups; the polycondensate may additionally contain an olefinically unsaturated reaction product of acrylic or methacrylic acid and a polyalcohol…