Photopolymerizable mixture and photopolymerizable copying material containing same

US5217845A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Hartmut Steppan · Wiesbaden, DE
• Hans-Dieter Frommeld · Wiesbaden, DE

Key dates

• Filing date: Sep 26, 1991
• Grant date: Jun 8, 1993
• Expiry date: Sep 26, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/117
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A photopolymerizable mixture is described which contains a polymeric binder, a polymerizable compound and an acridine compound of the general formula I ##STR1## as photoinitiator, in which R.sup.1 denotes an optionally substituted alkyl or acyl group, PA1 R.sup.2, R.sup.3 are identical or different and denote PA1 and R.sup.4 hydrogen or halogen atoms or optionally substituted alkyl or acyl groups, PA1 R.sup.5, R.sup.6 are identical or different and denote PA1 and R.sup.7 hydrogen or halogen atoms or optionally substituted alkyl, aryl or acyl groups, or groups of the formula II ##STR2## The photoinitiators yield a mixture having high photosensitivity and have a lower tendency to diffusion than the known 9-phenylacridine.