Process for stabilizing magenta couplers and the corresponding i

Details Process for stabilizing magenta couplers and the corresponding i Process for stabilizing magenta couplers and the corresponding i

1991-05-13

1992-09-08

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Stabilizing

430386, 430387, 430551, 430554, 430555, 430558, 430607, G03C 134, G03C 738, G03C 7384

Patent

active

051457660

ABSTRACT:
Compounds of the formula ##STR1## in which R is hydrogen or hydroxyl, R.sub.1 is alkyl, alkoxy, amino or aryl, and R.sub.2 is hydrocarbylcarbonyl or hydrocarbylsulfonyl, are highly suitable for stabilizing magenta couplers in photographic materials.

REFERENCES:
patent: 4252893 (1981-02-01), Iwamuro et al.
patent: 4573062 (1986-02-01), Satake et al.
patent: 4661440 (1987-04-01), Tschopp et al.
patent: 4906559 (1990-03-01), Nishijima et al.
patent: 5006453 (1991-04-01), Takahashi et al.
Y. I. Temchin et al., Mater. Plast. Elastomeri, Jan. 1985, pp. 41-44.

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