Photopolymerizable mixture containing unsaturated polyurethane

摘要

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 +TR wherein -X- is one of the groups -CkH2k-O- and -CrH2r-2-O-, Y is a saturated aliphatic or cycloaliphatic group with 2 to 12 carbon atoms, and Z is and wherein R1, R2, and R3 are hydrogen atoms or methyl groups, n is a whole number from 2 to 15, m is a whole number from 2 to 4, p is a whole number from 1 to 4, k is a whole number from 2 to 12, and r is a whole number from 4 to 12. The invention also relates to a light-sensitive transfer material employing the photopolymerizable mixture.