CH603745

• Main Authors: DAVID RODNEY DIXON, BRIAN CHARLES BENSON
• Format: Patent
• Language: English
• Published: 31.08.1978
• Subjects: APPARATUS SPECIALLY ADAPTED THEREFOR; CHEMISTRY; CINEMATOGRAPHY; COMPOSITIONS BASED THEREON; ELECTROGRAPHY; HOLOGRAPHY; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS THEREFOR; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; ORIGINALS THEREFOR; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

Procedure for preparing photopolymerizable compositions, characterized in that it comprises mixing; a) a water-soluble or dispersible polymer or copolymer, or a polymeric or copolymer mixture in which one or more of the components is soluble or dispersible in water; b) an addition polymerizable monomer that is soluble or compatible with a solvent or dispersant medium for (a); and c) at least one photosensitizer having the structure **(See formula)** where X is C = 0,> CR3 cr4, where R1 to R4, where R1 to R4, which are the same or different are hydrogen or hydrocarbyl groups, n is 0 or 1 and the groups A, which can be The same or different, they are hydrocarbyl or substituted hydrocarbyl groups, with groups A being aromatic or substituted aromatic when n is 1 and X is > CR1 R2 and when n is 0, the polymer component (a) being able to reduce the photosensitizer (c) when the latter is in the excited state, to effect polymerization by adding at least a proportion of the components (a) and (b) of the composition. (Machine-translation by Google Translate, not legally binding)