Cyan dye-forming couplers and photographic recording materials c

Details Cyan dye-forming couplers and photographic recording materials c Cyan dye-forming couplers and photographic recording materials c

1990-01-23

1991-02-05

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430553, 430558, G03C 734

Patent

active

049904361

ABSTRACT:
Tetrahydroquinoline rings fused to a phenolic ring form novel cyan due-forming coupler compounds which produce dyes having improved resistance to ferrous ion reduction.
Photographic recording materials containing such coupler compounds are also disclosed.

REFERENCES:
patent: 2313138 (1943-03-01), Frolich et al.
patent: 2369929 (1945-02-01), Vittum et al.
patent: 2525502 (1950-10-01), Tulagin et al.
patent: 2717831 (1955-09-01), Tulagin et al.
patent: 4333999 (1982-06-01), Lau

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