Antihalation dye for negative-working printing plates

Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...

Reexamination Certificate

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C430S175000, C430S281100, C430S288100, C430S325000

Reexamination Certificate

active

06960419

ABSTRACT:
Negative working imageable compositions and imageable elements comprising a layer of the imageable composition over a support are disclosed. The imageable compositions comprise a free-radical polymerizable system and an effective amount of curcumin. The curcumin is effective as an antihalation agent, but does not substantially reduce the photospeed of the imageable composition.

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