Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Norbert Wurms

David G Leppard

Pascal Hayoz

Vien V Toan

Gerhard Rytz

The invention relates to novel 2-hydroxyphenyltriazines and to homopolymers and copolymers obtainable therefrom, as described in greater detail in claims 1 and 5; the novel compounds can be used as UV absorbers in or for organic materials.

Polymeric compounds derived from 2-hydroxy-phenyl-s-triazines

s-Triazine UV absorbers of formula I ##STR1## where R.sub.1 is ##STR2## --CH.sub.2 --C(.dbd.CH.sub.2)--R.sub.10, --(CH.sub.2).sub.p --SiR.sub.11 R.sub.11 '--CH.dbd.CH.sub.2, --C(.dbd.O)--(CH.sub.2).sub.q --CH.dbd.CH.sub.2 or --C(.dbd.O)--O--CH.sub.2 --C(.dbd.CH.sub.2)--R.sub.10 ; and E.sub.1 and E.sub.2 are phenyl groups which may be unsubstituted or substituted with a variety of substituents including inter alia alkyl, OH and R.sub.1 ; are polymerizable and are effective stabilizers for a variety of polymeric and other organic substrates.

2-Hydroxyphenyl-s-Triazines substituted with ethylenically unsaturated

The invention relates to a photographic recording material comprising, on a base, at least one silver-halide emulsion layer and, if desired, at least one interlayer and/or a protection layer, where at least one of said layers contains a UV absorber of the 2-hydroxyphenyltriazine type, as described in greater detail in claim 1; this UV absorber can also be in the form of a homopolymer or copolymer.

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St. Ursen, Switzerland

Norbert Wurms