Flexographic printing plates containing blended adhesives

Details Flexographic printing plates containing blended adhesives Flexographic printing plates containing blended adhesives

G - Physics

03

F

96/189

G03F 7/11 (2006.01)

Patent

CA 1178476

TITLE FLEXOGRAPHIC PRINTING PLATES CONTAINING BLENDED ADHESIVES ABSTRACT OF THE DISCLOSURE Photosensitive flexographic element comprising (A) a flexible support, (B) a photosensitive elastomeric layer comprising (a) butadiene/acrylonitrile copolymer having a no. average molecular weight of 20,000 to 75,000 and optionally up to 15% by weight carboxyl content, (b) ethylenically unsaturated monomer, (c) free radical generating system, and (d) optionally up to 15% plasticizer; and between (A) and (3) an adhesive blend of at least two of the following polymers (1) polyester resin, condensation polymer of ethylene glycol, terephthalic acid, isophthalic acid and azelaic acid, 0 to 78% by weight; (2) polyether polyurethane resin having a Brookfield viscosity of 100-1200, 0 to 78% by weight; (3) a polyamide as defined, 0 to 94% by weight; and (4) a polyamide as defined, 0 to 97% by weight, the weight percentages based on the total weight of resin in the adhesive composition. The element is particularly useful for the preparation of flexographic printing plates processed in aqueous or semiaqueous basic solutions.

396870

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