Photopolymerizable composition for the manufacture of printing plates and relief plates

US4198241A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernd Bronstert · Otterstadt, DE
• Werner Kuesters · Ludwigshafen, DE
• Mong-Jon Jun · Speyer, DE
• Guenter Wallbillich · Schifferstadt, DE

Key dates

• Filing date: May 18, 1978
• Grant date: Apr 15, 1980
• Expiry date: May 18, 1998

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/031
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A photopolymerizable composition for the manufacture of printing plates and relief plates, based on a mixture, containing a photoinitiator, of photopolymerizable olefinically unsaturated monomers and a polymeric binder, contains up to 0.1% by weight of an etherified thioanthraquinone for improving the relief image in the production of relief plates. The composition advantageously also contains a small amount of an organic tertiary amine or of an aromatic .alpha.-ketocarboxylic acid or its ester and/or of an inhibitor, e.g. the salt of an organic N-nitrosohydroxylamine.