Photocurable composition comprising maleic anhydride adduct...

Details Photocurable composition comprising maleic anhydride adduct... Photocurable composition comprising maleic anhydride adduct...

C - Chemistry, Metallurgy

08

F

117/151, 96/177,

C08F 8/46 (2006.01) C08C 19/28 (2006.01) C08C 19/36 (2006.01) C08F 222/06 (2006.01) C08F 236/06 (2006.01) C08F 299/00 (2006.01) G03C 1/74 (2006.01) G03F 7/004 (2006.01) G03F 7/033 (2006.01)

Patent

CA 2040621

An aqueous-developable article is made from a photoprepolymer made by reacting a maleated polyalkadienyl homo- or copolymer (e. g., polybutadiene) with an olefinically unsaturated compound capable of opening anhydride rings (e. g., hydroxyethyl methacrylate) with simultaneous chain extension using a polyalkadienyl polyol, followed by hydrolysis and neutralization with Li-, Na-, or K- containing base. When formulated with unsaturated monomers and photoinitiators, the photoprepolymer is particularly useful in making photopolymer-based flexographic printing plates.

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