Arylidene pyrazolone coupler

Details Arylidene pyrazolone coupler Arylidene pyrazolone coupler

1991-07-15

1993-11-16

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Color correcting

430504, 430517, 430522, 430554, 430555, 430549, 430559, G03C 7384, G03C 7333

Patent

active

052622843

ABSTRACT:
A photographic element including a support bearing a silver halide photographic emulsion and an image dye-forming coupler, wherein the image dye-forming coupler includes a ballasted arylidene pyrazolone which is also a filter dye that upon exposure and processing of the element is destroyed in both exposed and unexposed areas of said element or a masking coupler that upon exposure and processing is destroyed only in exposed areas of the element. The arylidene pyrazolone compound includes an oxygen-inclusive electron donating group in conjugation with the arylidene function, preferably positioned para to the arylidene function.

REFERENCES:
patent: 2688538 (1954-09-01), Ganguin et al.
patent: 2688540 (1954-09-01), Ganguin et al.
patent: 2688541 (1954-09-01), Ganguin et al.
patent: 4234677 (1980-11-01), Postle
patent: 4311787 (1982-01-01), Lemahieu et al.
patent: 4659651 (1987-04-01), Yagihara et al.
patent: 4883746 (1989-11-01), Shimada et al.
patent: 4923789 (1990-05-01), Yagihara et al.
patent: 4968594 (1990-11-01), Shimazaki et al.

Affiliated with

Also associated with

Rating

Arylidene pyrazolone coupler does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arylidene pyrazolone coupler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arylidene pyrazolone coupler will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-21546