Photopolymerizable mixture containing unsaturated polyurethane

US4250248A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventor

• Raimund J. Faust · Wiesbaden, DE

Key dates

• Filing date: May 23, 1979
• Grant date: Feb 10, 1981
• Expiry date: May 23, 1999

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/106
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to a photopolymerizable mixture comprising a polymeric binder which is soluble or at least swellable in aqueous-alkaline solutions, a photoinitiator, and a polyurethane with two terminal acrylic acid or methacrylic acid ester groups which is capable of addition polymerization, and corresponds to the following general Formula I ##STR1## wherein --X-- is one of the groups ##STR2## --C.sub.k H.sub.2k --O-- and --C.sub.r H.sub.2r-2 --O--, PA1 Y is a saturated aliphatic or cycloaliphatic group with 2 to 12 carbon atoms, and PA1 Z is ##STR3## and wherein R.sub.1, R.sub.2, and R.sub.3 are hydrogen atoms or methyl groups, PA1 n is a whole number from 2 to 15, PA1 m is a whole number from 2 to 4, PA1 p is a whole number from 1 to 4, PA1 k is a whole number from 2 to 12, and PA1 r is a whole number from 4 to 12. The invention also relates to a light-sensitive transfer material employing the photopolymerizable mixture.