2-hydroxyphenyl benzotriazole based UV absorbing polymers with p

Details 2-hydroxyphenyl benzotriazole based UV absorbing polymers with p 2-hydroxyphenyl benzotriazole based UV absorbing polymers with p

1996-03-18

1997-10-07

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430627, 430931, 524 91, 526259, 548259, 548260, G03C 1815

Patent

active

056746709

ABSTRACT:
A photographic element comprising a light sensitive portion and an ultraviolet absorbing polymer comprising repeating units of a 2'-hydroxphenyl benzotriazole with a 5- or 6-substituent selected from halogen, cyano, carboxy or a sulfonyl, and a 4'-alkoxy group in which the alkylene portion of the alkoxy is linked, in sequence through a first optional bivalent linking group, then an oxygen, sulfur or amino group, then a second optional bivalent linking group, to the polymer chain, provided that the 3'-position is unsubsituted and the 4'-substituent does not have any --NH--, --OH or --SH substituents.

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