Benzotriazole-based novel UV absorbers and photographic elements

Details Benzotriazole-based novel UV absorbers and photographic elements Benzotriazole-based novel UV absorbers and photographic elements

1997-02-13

1998-09-29

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430507, 430523, G03C 1815

Patent

active

058144382

ABSTRACT:
An ultraviolet absorbing compound of formula (I) below, and photographic elements containing such a compound as an ultraviolet absorber: ##STR1## wherein: R.sub.1 -R.sub.4 independently is a hydrogen atom, a halogen atom such as fluoro, chloro, bromo, iodo or a combination thereof; a carbalkoxy group having at least one asymmetric carbon or asymmetric silicon atom; an alkoxy group having at least one asymmetric carbon or asymmetric silicon atom, with the proviso that R.sub.2 or R.sub.3, or both R.sub.2 and R.sub.3 are other than hydrogen;

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