UV-crosslinkable materials based on isoamyl (meth)acrylate copolymers

US5026806A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerd Rehmer · Beindersheim, DE
• Andreas Boettcher · Leimen, DE
• Peter Pfoehler · Speyer, DE
• Oral Aydin · Mannheim, DE
• Gerhard Nestler · Ludwigshafen, DE

Key dates

• Filing date: Oct 5, 1989
• Grant date: Jun 25, 1991
• Expiry date: Oct 5, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J2301/302
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Materials which are cross-linkable by ultraviolet radiation under atmospheric oxygen and are based on (meth)acrylate copolymers having a K value of from 10 to 100 are obtained by free radical polymerization, in the presence or absence of a solvent, of PA0 a) from 5% to 97.4% by weight of isoamyl acrylate and/or isoamyl methacrylate, PA0 b) from 9% to 89.9% by weight of (methacrylates whose homopolymers have a glass transition temperature below -30.degree. C., PA0 c) from 2.5% to 30% by weight of .alpha.,.beta.-monoolefinically unsaturated compounds whose homopolymers have a glass transition temperature above -30.degree. C., PA0 d) from 0% to 10% by weight of monoolefinically unsaturated acids and/or their anhydrides and PA0 e) from 0% to 20% by weight of further olefinically unsaturated monomers having one or more of the following functional groups: hydroxyl, amide, epoxide, ether, ester, urethane, urea, primary, secondary and tertiary amine and ether groups, and PA0 f) from 0.1% to 5% by weight of a copolymerizable benzophenone derivative or acetophenone derivative, the sum of the percentages by weight X (=a+b+c+d+f) being 100 in each case.