Photocurable elastomeric mixture and recording material...

Details Photocurable elastomeric mixture and recording material... Photocurable elastomeric mixture and recording material...

Category

G - Physics

Subcategory

03

Subsubcategory

F

CPC

96/177

IPC codes

G03F 7/038 (2006.01) G03F 7/032 (2006.01) G03F 7/035 (2006.01)

Type

Patent

Patent number

CA 2005875

Description

Abstract of the Disclosure A photocurable elastomeric mixture is described which contains a radical-polymerizable compound containing at least one terminal ethylenically unsaturated group, a photopoly- merization initiator and a graft polymer as binder whose grafting base is a polymer of diol components and diisocyanate components containing at least 2 urethane groups in the molecule onto which are grafted polymer chains composed of units of carboxylic acid vinyl esters containing 3 to 20 carbon atoms and/or their hydrolysis products and optionally of further ethylenically unsaturated monomers and/or their hydrolysis products and which graft polymer is esterified with an acylating reagent in a homogeneous phase in the melt. The mixture is suitable for producing relief printing plates, in particular flexographic printing plates. It can be developed with aqueous alkaline solutions but exhibits a high resistance to water.

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