Benzotriazole based UV absorbing monomers and photographic eleme

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Antihalation or filter layer containing

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430627, 430630, 430631, 430496, G03C 1815

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active

054551528

ABSTRACT:
An ultraviolet absorbing monomer of formula (A): ##STR1## wherein: R.sub.4 and R.sub.5 are, independently, a substituted or unsubstituted alkylene with or without intervening oxygen, sulfur or nitrogen atoms; R.sub.6 is H or a substituted or unsubstituted methyl; and the benzo ring, the hydroxy substituted phenyl ring and the phenyl ring of the styryl group may be further substituted or unsubstituted. A method of making such monomers and photographic elements containing UV absorbing polymers formed from such monomers are also provided.

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Synthesis, Manfred Lissel, Stefan Schmidt, Beate Neumann, "Dimethylcarbonat als Methylierungsmittel unter phasen-transfer-katalytischen Bedingungen," May 1986, pp. 382-383, Communications.

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