Photopolymerizable mixture containing polyurethanes

US4248958A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventor

• Raimund J. Faust · Wiesbaden, DE

Key dates

• Filing date: May 23, 1979
• Grant date: Feb 3, 1981
• Expiry date: May 23, 1999

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/107
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

This invention relates to a photopolymerizable mixture comprising a polymeric binder which is soluble or swellable in aqueous-alkaline solutions, a photoinitiator, a compound with at least two terminal acrylic or methacrylic acid ester groups and a boiling point above 100.degree. C. which is capable of addition polymerization, and a polyurethane corresponding to the following Formula I ##STR1## wherein --X-- is one of the following groups: ##STR2## Y is a saturated aliphatic or cycloaliphatic group with 2 to 12 carbon atoms, PA1 Z is ##STR3## R.sub.1 is R.sub.4 or CONH--R.sub.4, R.sub.2 and R.sub.3 are hydrogen atoms or methyl groups, PA1 R.sub.4 is a saturated aliphatic group with 1 to 20 carbon atoms, PA1 n is zero or a whole number from 1 to 15, PA1 m is a whole number from 2 to 4, PA1 p is zero or a whole number from 1 to 4, PA1 k is a whole number from 2 to 12, PA1 r is a whole number from 4 to 12, PA1 n+p is a whole number from 1 to 19, and wherein PA1 R.sub.1 is R.sub.4 if p=0, and R.sub.1 is CONH--R.sub.4 if n=0. The invention also relates to a light-sensitive transfer material including the photopolymerizable mixture.