Photosensitive recording materials having a novel graft copolymer binder

US4849307A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerhard Hoffmann · Otterstadt, DE
• Horst Koch · Havelsee, DE
• Guenther Schulz · Bad Dürkheim, DE

Key dates

• Filing date: Dec 8, 1987
• Grant date: Jul 18, 1989
• Expiry date: Dec 8, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/11
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to a novel photosensitive recording material which can be developed in aqueous solvents after its imagewise irradiation with actinic light and which consists essentially of a dimensionally stable base (A) and of a photosensitive recording layer (B). The said photosensitive recording layer (B) contains from about 48 to about 85% by weight, based on the photosensitive recording layer (B) of one or more elastomeric graft copolymers (B1) which are selected from the group consisting of polyalkylene oxide - vinyl ester - graft copolymers whose vinyl ester structural units have been hydrolyzed to a degree of not less 50 mol.-% from about 0.01 to about 10% by weight, based on the photosensitive recording layer (B), of one or more photoinitiators (B2), and from about 5 to about 30% by weight, based on the photosensitive recording layer (B), of one or more photopolymerizable monomers (B3). In addition to these components, the photosensitive recording layer (B) might contain further assistants or additives. The novel photosensitive recording material is especially well suited for the production of lithographic printing plates, resists and relief plates, in particular rel…