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US 5,763,144 AGranted
Color-photographic recording material
AssigneeCiba Specialty Chemicals Corporation
InventorSuruliappa Jeganathan
Life of this patent
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Abstract
The invention relates to a color-photographic recording material which comprises a magenta coupler and, as stabilizer, at least one compound of formula (Ia), (Ib) or (II), where the radicals are as defined in claim 1, and to the novel stabilizers.
Claims9
A colour-photographic recording material which comprises a magenta coupler and, as stabilizer, at least one compound of the formula ##STR68## where k is the number 0 or 1;
- R.sub.1 is hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy, --COR.sub.9, --COOR.sub.10 or --Si(R.sub.11)(R.sub.12)(R.sub.13);
- in which R.sub.9 is C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.18 alkenyl or phenyl;
- R.sub.10 is C.sub.1 -C.sub.4 alkyl or benzyl;
- and
- R.sub.11, R.sub.12 and R.sub.13, independently of one another, are C.sub.1 -C.sub.6 alkyl or phenyl;
- R.sub.2 is hydrogen, C.sub.1 -C.sub.18 alkyl, --OR.sub.14 or --(CH.sub.2).sub.n COOR.sub.15 ;
- in which n is a number from 0 to 17;
- R.sub.14 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl, phenyl-C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.24 alkyl which is interrupted by one or more --O-- atoms, C.sub.2 -C.sub.14 hydroxyalkyl, phenyl, which may be monosubstituted to trisubstituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen, or is tolyl, C.sub.5 -C.sub.6 cycloalkyl or --COR.sub.16 ;
- R.sub.15 is C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl or phenyl, which may be monosubstituted to trisubstituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen;
- in which R.sub.16 is C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl or phenyl;
- R.sub.3, R.sub.4, R.sub.5 and R.sub.6, independently of one another, are hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.8 alkoxy, C.sub.5 -C.sub.7 cycloalkyl, phenyl, phenyl-C.sub.1 -C.sub.4 alkyl or halogen;
- X.sub.1 is O, S, SO, SO.sub.2 or NR.sub.18 ;
- in which R.sub.18 is hydrogen, C.sub.1 -C.sub.18 alkyl, --CH.sub.2 CH(OH)CH.sub.2 O(C.sub.1 -C.sub.14 alkyl) or --CO--R.sub.19 ;
- in which R.sub.19 is C.sub.1 -C.sub.18 alkyl;
- and
- where, in the case of compounds of the formula (Ia) R.sub.2 may alternatively be a group of the formula ##STR69##
13 more elements
A compound of the formula ##STR75## where k is the number 0or 1;
- R.sub.1 is hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy, --COR.sub.9, --COOR.sub.10 or --Si(R.sub.11)(R.sub.12)(R.sub.13);
- in which R.sub.9 is C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.18 alkenyl or phenyl;
- R.sub.10 is C.sub.1 -C.sub.4 alkyl or benzyl;
- and
- R.sub.11, R.sub.12 and R.sub.13, independently of one another, are C.sub.1 -C.sub.6 alkyl or phenyl;
- R.sub.2 is hydrogen, C.sub.1 -C.sub.18 alkyl, --OR.sub.14 or --(CH.sub.2).sub.n COOR.sub.15 ;
- in which n is a number from 0 to 17;
- R.sub.14 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl, phenyl-C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.24 alkyl which is interrupted by one or more --O-- atoms, C.sub.2 -C.sub.14 hydroxyalkyl, phenyl, which may be monosubstituted to trisubstituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen, or is tolyl, C.sub.5 -C.sub.6 cycloalkyl or --COR.sub.16 ;
- R.sub.15 is C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl or phenyl, which may be monosubstituted to trisubstituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen;
- in which R.sub.16 is C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl or phenyl;
- R.sub.3, R.sub.4, R.sub.5 and R.sub.6, independently of one another, are hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.8 alkoxy, C.sub.5 -C.sub.7 cycloalkyl, phenyl, phenyl-C.sub.1 -C.sub.4 alkyl or halogen;
- X.sub.1 is O, S, SO, SO.sub.2 or NR.sub.18 ;
- in which R.sub.18 is hydrogen, C.sub.1 -C.sub.18 alkyl, --CH.sub.2 CH(OH)CH.sub.2 O(C.sub.1 -C.sub.14 alkyl) or --CO--R.sub.19 ;
- in which R.sub.19 is C.sub.1 -C.sub.18 alkyl;
- and
- where, in the case of compounds of the formula (Ia) R.sub.2 may alternatively be a group of the formula ##STR76##
13 more elements
Dependencies are inferred from the claim text.