Photopolymerizable compositions and elements containing addition polymerizable polymeric compounds

Abstract

Abstract ADDITION POLYMERIZABLE POLYMERIC COMPOUNDS PRODUCED BY ESTERIFICATION REACTION OR ADDITION REACTION OF A COPOLYMER HAVING PENDENT CARBOXYL GROUPS AND ABOUT 0.03 TO 1.0 EQUIVALENT, BASED UPON THE CARBOXYL GROUPS OF SAID COPOLYMER, OF AN ETHYLENICALLY UNSATURATED COMPOUND HAVING ONE OXIRANE RING, SAID COPOLYMER BEING OBTAINED BY COPOLYMERIZING (1) ABOUT 95 PERCENT BY WEIGHT OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF STYRENE AND THE METHYL-SUBSTITUTED STYRENE DERIVATIVES (2) ABOUT 5 TO 70 PERCENT BY WEIGHT OF AT LEAST ONE ETHYLENICALLY UNSATURATED MONO-OR DI-CARBOCYLIC ACID, ITS ANYHDRIDE OR ITS MONOALKYL OF 1 TO 4 CARBON ATOMS ESTER, (3) UP TO ABOUT 30 PERCENT WEIGHT OF AT LAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE AND METHYACRYLONITRILE, (4) UP TO ABOUT 85 PERCENT BY WEIGHT OF AT LEAST ONE COMPOUND OF THE FORMULA CH2=C(-R1)-COO-R2 WHEREIN R1 REPRESENTS A HYDROGEN ATOM OR METHYL GROUP; AND R2 REPRESENTS AN ALKYL GROUP HAVING 1 TO 12 CARBON ATOMS, AND (5) UP TO ABOUT 50 PERCENT BY WEIGHT BASED UPON THE TOTAL WEIGHT OF SAID COMPOUND (3) AND/OR (4), OF AT LEAST ONE VINYL ESTER OF A SATURATED ALIPHATIC MONOCARBOXYLIC ACID HAVING 2 TO 10 CARBON ATOMS, THE PHOTOPOLYMERIZABLE COMPOSITIONS COMPRISING (A) ABOUT 100 PARTS BY WEIGHT OF THE ABOVE-DESCRIBED ADDITION POLYMERIZABLE POLYMERIC COMPOUND, (B) ABOUT 5 TO 70 PARTS BY WEIGHT OF AT LEAST ONE ETHYLENICALLY UNSATURATED COMPOUND AND (C) ABOUT 0.0001 TO 10 PARTS BY WEIGHT OF A PHOTOPOLYMERIZATION INITIATOR. THE COMPOSITIONS GIVE PHOTOPOLYMERIZABLE ELEMENTS WHICH ARE USEFUL FOR VARIOUS PATTERN OR IMAGE YIELDING PURPOSES AND ESPECIALLY USEFYL IN MAKING RELIEFS, PARTICULARLY LITHOGRAPHIC PLATES HAVING AN EXCELLENT PRINTING DURABILITY.

Inventors

• 👤 K Hosoi
• 👤 H Sagami
• 👤 I Imai

Bibliographic Details