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Machine translation
1. (WO1980000623) PHOSPHINE ACTIVATED PHOTOSENSITIVE COMPOSITIONS AND PHOTOPOLYMER PRINTING PLATES MADE THEREFROM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000623    International Application No.:    PCT/US1979/000713
Publication Date: 03.04.1980 International Filing Date: 11.09.1979
IPC:
G03F 7/029 (2006.01)
Applicants:
Inventors:
Priority Data:
70190 27.08.1979 US
Title (EN) PHOSPHINE ACTIVATED PHOTOSENSITIVE COMPOSITIONS AND PHOTOPOLYMER PRINTING PLATES MADE THEREFROM
(FR) COMPOSITIONS PHOTOSENSIBLES A PHOSPHINE ACTIVEE ET PLAQUES D"IMPRESSION PREPAREES A PARTIR DE CELLES-CI
Abstract: front page image
(EN)Photopolymerizable composition and photosensitive elements produced therefrom. The photopolymerizable composition includes: a) a monomer component, b) a polymer component, c) a photopolymerization initiator, and d) an activator. The monomer component contains at least one water-soluble, monofunctional unsaturated ethylenic monomer or the combination of such a monomer and at least one polyfunctional unsaturated ethylenic monomer. The polymer component includes a partially saponified watersoluble, polyvinyl acetate polymer compatible with the monomer components. The polyvinyl acetate polymer contains both acetyl and hydroxyl groups and has a polymerization degree of from 300 to 2,000. The degree of saponification of the polymer is desirably in the range of 65 to 99 percent. The preferred photopolymerization initiators are acetophenone derivatives such as 2,2-dimethoxy-2-phenyl acetophenone, 2,2-diethyoxy-2-phenyl acetophenone, 2,-2-diisopropoxy-2-phenyl acetophenone, benzoin alkyl, aryl, allyl or vinyl ethers, or benzophenone derivatives such as benzophenone, 2-methylbenzophenone, 2-methoxybenzophenone or 2,2"-dimethoxybenzophenone, which are compatible with the monomer component and the polyvinyl acetate polymer and are activatable by actinic light. Finally, the activator is a phosphine derivative generally described by the formula: (FORMULA) wherein any of X, Y and Z are hydrogen, halogen, alkyl, alkoxy, aryl, vinyl, or allyl, although not more than one of X, Y and Z may be hydrogen. It is especially preferred in the practice of the present invention that at least one of X, Y or Z in the phosphine derivative activator component be an aryl group.
(FR)Une composition photosensible et des elements photosensibles prepares a partir de celles-ci sont decrits. La composition photosensible comprend: a) un composant monomere, b) un composant polymere, c) un initiateur de photo-polymerisation et d) un activateur. Le composant monomere comprend au moins un monomere ethyleniquement insature monofonctionnel, soluble dans l"eau ou bien la combinaison d"un tel monomere avec au moins un monomere ethyleniquement insature polyfonctionnel. Le composant polymere comprend un polymere d"acetate de polyvinyle, partiellement saponifie soluble dans l"eau compatible avec le composant monomere. Le polymere d"acetate de polyvinyle contient et des groupes acetates et des groupes hydroxyles et possede un degre de polymerisation entre 300 et 2000. Le degre de saponification du polymere est de preference dans la zone de 65 a 90 pour cent. Les initiateurs de photopolymerisation preferes sont des derives de l"acetophenone, tels que la 2,2-dimethoxy-2-phenyl acetophenone, la 2,2-diethoxy-2-phenyl-acetophenone, la 2,2-diisopropoxy-2-phenyl acetophenone des ethers alkyle, aryle, allyle ou vinyle de la benzoine ou des derives de la benzophenone tels que la enzophenone, la 2-methylbenzophenone, la 2-methoxybenzophenone ou la 2-2"-dimethoxybenzophenone qui sont compatibles avec le composant monomere et le polymere d"acetate de polyvinyle et qui sont activables par la lumiere actinique. Finalement, l"activateur est un derive de phosphine repondant generalement a la formule: (FORMULE) dans la quelle n"importe lequel des X, Y, Z represente l"hydrogene, un halogene, un groupe alkyle, alcoxy, aryle, vinyle ou allyle, bien que pas plus d"un des X, Y, Z ne puisse representer l"hydrogene. Il est specialement prefere qu"un, au moins, des X, Y, Z, dans le derive phosphine de l"activateur, soit un groupe aryle.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)