Photographic material containing UV absorber
AssigneeCiba-Geigy Corporation
InventorsDavid G. Leppard, Vien V. Toan, Mario Slongo
Life of this patent
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Abstract
A photographic material is described which comprises, on a base, blue-sensitive, green-sensitive and/or red-sensitive silver-halide emulsion layers and, if desired, a protection layer, a layer containing a UV absorber being arranged between the uppermost silver-halide emulsion layer and the protection layer, or on top of the uppermost silver-halide emulsion layer, wherein the UV absorber conforms to the formula ##STR1## in which the radicals E.sub.1, E.sub.2 and E.sub.3 are independently alkyl, substituted alkyl, alkenyl, glycidyl, cycloalkyl, phenylalkyl or siloxyl.
Claims22
A photographic material comprising, on a base, blue-sensitive, green-sensitive and/or red-sensitive silver-halide emulsion layers and, if desired, a protection layer, a layer containing a UV absorber being arranged between the uppermost silver-halide emulsion layer and the protection layer, or on top of the uppermost silver-halide layer, wherein the UV absorber conforms to the formula ##STR57## in which the radicals E.sub.1, E.sub.2 and E.sub.3, independently of one another, are alkyl having 1 to 18 carbon atoms substituted by --CO.sub.2 R.sub.2,
- where R.sub.2 is alkyl having 1 to 18 carbon atoms, or oxygen-, sulfur- or nitrogen-interrupted alkyl or hydroxyalkyl having 3 to 30 carbon atoms, hydroxyalkyl having 2 to 18 carbon atoms, alkenyl having 3 to 18 carbon atoms, glycidyl, cycloalkyl having 5 to 8 carbon atoms, benzyl, alkylphenyl having 1 to 12 carbon atoms in the alkyl moiety, phenyl, furfuryl or a radical of the formula --CH.sub.2 CH(OH)R.sub.7,
- R.sub.7 is phenylalkyl having 1 to 6 carbon atoms in the alkyl moiety or a radical of the formula --CH.sub.2 OR.sub.8, and
- R.sub.8 is cyclohexyl, benzyl, phenyl or tolyl;
- or
- the radicals E.sub.1, E.sub.2 and E.sub.3, independently of one another, are radicals of the formula --CH.sub.2 --CH(OR.sub.x)R.sub.y, --CH.sub.2 CH(OR.sub.x)CH.sub.2 OR.sub.z, ##STR58## --CH.sub.2 COR.sub.y or --CH.sub.2 COCH.sub.2 OR.sub.z, where R.sub.x is H, --COR.sub.s, --COOR.sub.w or --SiR.sub.p R.sub.q R.sub.r,
- R.sub.y is C.sub.1 -C.sub.18 alkyl or phenyl-C.sub.1 -C.sub.4 alkyl,
- R.sub.z is C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl, phenyl-C.sub.1 -C.sub.4 alkyl, --COR.sub.s or oxygen-interrupted C.sub.2 -C.sub.24 alkyl or C.sub.2 -C.sub.24 hydroxyalkyl,
- R.sub.s is C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl or phenyl,
- R.sub.w is C.sub.1 -C.sub.4 alkyl, and
- R.sub.p, R.sub.q and R.sub.r, independently of one another, are C.sub.1 -C.sub.6 alkyl or phenyl;
- or
- the radicals E.sub.1, E.sub.2 and E.sub.3, independently of one another, are G-II groups, where II is a group of the formula ##STR59## and G is a direct bond or a divalent group of one of the following formulae:
- ##STR60## in which q and r, independently of one another, are 1-4 and p is 0-50. R.sub.26 is C.sub.1 -C.sub.12 alkylene, cyclohexylene or phenylene,
- R.sub.27 is C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.8 cycloalkyl, phenyl, C.sub.2 -C.sub.13 alkoxymethyl, C.sub.6 -C.sub.9 cycloalkoxymethyl or phenoxymethyl,
- R.sub.28 is a group of the formula G-II,
- R.sub.29 is hydrogen or methyl,
- X is --O-- or --NR.sub.23 --, in which R.sub.23 is hydrogen, C.sub.1 -C.sub.12 alkyl or a --(CH.sub.2).sub.3 --G-II or --(CH.sub.2).sub.3 --O--G-II group,
- Y is --O-- or --NH--, and
- R.sub.20, R.sub.21 and R.sub.22, independently of one another, are C.sub.1 -C.sub.18 alkyl, cyclohexyl, phenyl or C.sub.1 -C.sub.18 alkoxy.
A photographic material according to claim 1 containing a further layer between the green-sensitive and red-sensitive silver halide emulsion layers, wherein a UV absorber of either formula (1) as defined in claim 25 or of the formula (2) ##STR80## in which T.sub.1, T.sub.2 and T.sub.3, independently of one another, are hydrogen, halogen, alkyl, carboxylate-substituted alkyl, alkoxy, aryloxy, hydroxyl or acyloxy, and T.sub.4 is hydrogen, alkoxy, aryloxy or acyloxy, is present in the further layer and a UV absorber of either formula (1) or of formula (2) is present in the red-sensitive silver halide emulsion layer.
Dependencies are inferred from the claim text.