Radiation imagery chemistry: process – composition – or product th – Color imaging process – Stabilizing
Patent
1991-04-01
1993-08-03
Wright, Lee C.
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Stabilizing
430377, 430386, 430387, 430428, 430429, 430546, 430554, 430555, 430558, 430551, G03C 133, G03C 134, G03C 738, G03C 7392
Patent
active
052328210
ABSTRACT:
Photographic coupler compositions comprise (a) a magenta dye-forming coupler compound, and (b) a sulfoxide compound or a sulfone compound in an amount sufficient to improve the light stability of a magenta dye formed from the magenta dye-forming coupler compound. The sulfoxide compound is of the formula ##STR1## and the sulfone compound is of the formula ##STR2## wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of straight and branched chain alkyl groups, alkenyl groups and alkylene groups; straight and branched chain alkyl groups, alkenyl groups and alkylene groups containing at least one substituent selected from the group consisting of alkoxy, aryloxy, aryl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, carbonamido and carbamoyl groups and halogen atoms; a phenyl group; and a phenyl group containing at least one substituent selected from the group consisting of alkyl, alkoxy, aryloxy, aryl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, carbonamido and carbamoyl groups and halogen atoms. Additionally, R.sub.1 and R.sub.2 combined contain at least 12 carbon atoms. The photographic coupler compositions are free of phenol compounds.
REFERENCES:
patent: 3625699 (1971-12-01), Stewart et al.
patent: 4046568 (1977-09-01), Greenwald
patent: 4047954 (1977-09-01), Greenwald
patent: 4113488 (1978-09-01), Yamada et al.
patent: 4419431 (1983-12-01), Lischewski et al.
patent: 4686177 (1987-08-01), Aoki et al.
patent: 4758498 (1988-07-01), Harada et al.
patent: 4770987 (1988-09-01), Takahashi et al.
patent: 4993271 (1990-06-01), Rody et al.
patent: 5047315 (1991-09-01), Morigaki et al.
patent: 5068171 (1991-11-01), Morigaki et al.
patent: 5070007 (1991-12-01), Rody et al.
patent: 5082766 (1992-01-01), Nishijima et al.
Merkel Paul B.
Schofield Edward
Eastman Kodak Company
Wright Lee C.
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