Photoimaging composition containing admixture of leuco dye...

Details Photoimaging composition containing admixture of leuco dye... Photoimaging composition containing admixture of leuco dye...

G - Physics

03

C

96/171

G03C 1/40 (2006.01) G03C 1/675 (2006.01) G03C 1/73 (2006.01)

Patent

CA 1272058

TITLE PHOTOIMAGING COMPOSITION CONTAINING ADMIXTURE OF LEUCO DYE AND 2,4,5-TRIPHENYLIMIDAZOLYL DIMER ABSTRACT OF THE INVENTION Photoimaging composition comprising an admixture of leuco dye, and at least one 2,4,5- triphenylimidazolyl dimer prepared by an oxidative coupling reaction, a reaction product, 2,2' ,5-tris- (o-chlorophenyl)-4-(3,4-dimethoxyphenyl)-4',5'- diphenylbiimidazole, being present in an amount of 0.01 to 90.0% by weight based on the weight of solids in the composition. The composition when coated on a support is useful for prepress proofing.

518028

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