Copolymers crosslinkable by ultraviolet radiation in the atmosphere

US5073611A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerd Rehmer · Beindersheim, DE
• Andreas Boettcher · Leimen, DE

Key dates

• Filing date: Apr 29, 1991
• Grant date: Dec 17, 1991
• Expiry date: Apr 29, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S522/905
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Copolymers which are curable by ultraviolet radiation in the air are prepared by a process in which a mixture of (A) from 80 to 99.9% by weight of olefinically unsaturated monomers, (B) from 0 to 10% by weight of a copolymerizable olefinically unsaturated, photoreactive compound which, in the excited state produced by UV radiation, is capable of abstracting hydrogen and (C) from 0 to 10% by weight of a polymerization-regulating photoreactive compound which, in the excited state, is capable of abstracting hydrogen is subjected to free radical polymerization, the sum of (B) and (C) being not less than 0.1% by weight and the stated percentages by weight being based on the sum of the weights of (A)+(B)+(C).