Elements having layers containing mixtures which can be crosslinked by photopolymerization

US4921775A · kind A · utility

Assignee

• BASF SE

Inventors

• Peter Richter · Karlstein, DE
• Gerhard Hoffmann · Otterstadt, DE
• Klaus Bronstert · Eisenberg (Pfalz), DE
• Wolfgang Mueller · Wappingers Falls, US
• Karl Gerberding · Monsheim, DE

Key dates

• Filing date: Sep 26, 1988
• Grant date: May 1, 1990
• Expiry date: Sep 26, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/106
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Mixtures which can be crosslinked by photopolymerization and are based on binders, photopolymerizable monomers which are compatible with these, photoinitiators and thermal polymerization inhibitors contain, as the binder, polymers of the formula I ##STR1## where Pol is a radical of a block copolymer prepared by sequential anionic polymerization of conjugated dienes and vinyl aromatics, PA1 R.sup.1 is a vicinal alkanediyl group, PA1 R.sup.2 is a divalent hydrocarbon group of 2 to 20 carbon atoms, PA1 X.sup.- is an acid anion, PA1 M is a metal cation, a metal cation complex or cation of an amine, and PA1 a and n are each an integer from 1 to 10.