On-press developable ir sensitive printing plates using...

G - Physics – 03 – F

Patent

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Details

G03F 7/033 (2006.01) B41C 1/10 (2006.01) B41M 5/36 (2006.01) G03F 7/021 (2006.01)

Patent

CA 2479515

The present invention relates to a polymerizable coating composition suitable for the manufacture of printing plates developable on-press. The coating composition comprises (i) a polymerizable compound and (ii) a polymeric binder comprising polyethylene oxide segments, wherein the polymeric binder is selected from the group consisting of at least one graft copolymer comprising a main chain polymer and polyethylene oxide side chains, a block copolymer having at least one polyethylene oxide block and at least one non-polyethylene oxide block, and a combination thereof. The invention is also directed to an imageable element comprising a substrate and the polymerizable coating composition.

La présente invention se rapporte à une composition de revêtement polymérisable se prêtant à la fabrication de plaques d'impression que l'on met au point sur presse. La composition de revêtement comprend (i) un composé polymérisable et (ii) un liant polymère contenant des segments d'oxyde de polyéthylène, le liant polymère étant sélectionné dans le groupe constitué d'au moins un copolymère de greffe comprenant un copolymère à chaîne principale et des chaînes auxiliaires d'oxyde de polyéthylène, un copolymère séquencé ayant au moins une séquence d'oxyde de polyéthylène et au moins une séquence d'oxyde de non polyéthylène et leur combinaison. L'invention se rapporte également à un élément que l'on peut imager comprenant un substrat et la composition de revêtement polymérisable.

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