Process for producing photo-cured printing plates possessing a defined hardness

US4606994A · kind A · utility

Assignee

• BASF SE

Inventors

• Karl H. Illers · Otterstadt, DE
• Mong-Jon Jun · Speyer, DE
• Gunnar Schornick · Neuleiningen, DE

Key dates

• Filing date: Apr 23, 1985
• Grant date: Aug 19, 1986
• Expiry date: Apr 23, 2005

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/168
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Photocured layers possessing a defined controllable hardness are produced by exposing a layer of a photopolymerizable or photocrosslinkable mixture, which contains a partially crystalline polymeric binder possessing olefinic double bonds capable of undergoing polymerization, to actinic light, by a method in which the photocurable layer, prior to exposure to actinic light, is subjected to a heat treatment in which the partially crystalline parts of the polymeric binder are partially or completely fused.