Multilayer, sheet-like, photosensitive recording material

US5035981A · kind A · utility

Assignee

• BASF SE

Inventors

• Karl-Rudolf Kurtz · Heidelberg, DE
• Horst Koch · Havelsee, DE
• Thomas Telser · Weinheim, DE
• Helmut Bach · Mutterstadt, DE

Key dates

• Filing date: Feb 6, 1990
• Grant date: Jul 30, 1991
• Expiry date: Feb 6, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/162
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In a process for preparing a photopolymer printing plate, relief plate or photoresist from a photosensitive recording element containing PA1 A) a photopolymerizable relief-forming layer which can be developed with liquid developer after imagewise exposure to actinic light, PA1 B) a top layer which consists of polymers forming films of high tensile strength, adheres firmly to the photopolymerizable relief-forming layer (A) and is soluble or swellable in the liquid developers and PA1 C) a cover sheet which can readily be peeled off from the top layer (B), PA1 comprising peeling off the cover sheet (C) from the top layer (B), imagewise exposing to actinic light and developing the relief-forming layer (A), the formation of an electrostatic charge on top of the photosensitive recording element being prevented by incorporating into the element a top layer (B) containing specific tertiary amines and/or amides and/or specific quaternary ammonium salts.