Photographic elements containing 2-equivalent pyrazolone coupler

Details Photographic elements containing 2-equivalent pyrazolone coupler Photographic elements containing 2-equivalent pyrazolone coupler

1994-01-10

2000-01-18

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430386, 430387, 430555, 430558, G03C 173

Patent

active

060156570

ABSTRACT:
A photographic element contains at least one photosensitive silver halide emulsion layer having associated therewith a 5-pyrazolone photographic coupler represented by the formula: ##STR1## wherein substituents X.sub.1, X.sub.2, Y, G.sub.1, G.sub.2, G.sub.3, Z, and R.sub.1 may be as specified in the specification; a, b, and c are individually integers form 0 to 3 provided that "a" cannot be an integer which, combined with the selection of X.sub.1 and X.sub.2, allows the number of chloride substituents on the ring containing G.sub.1 to exceed 3; and the sum of the Hammett's sigma values for X.sub.1, X.sub.2, Y, G.sub.1, G.sub.2, and G.sub.3 is at least 1.3.

REFERENCES:
patent: 4351897 (1982-09-01), Aoki et al.
patent: 4413054 (1983-11-01), Mitsui et al.
patent: 4740438 (1988-04-01), Krishnamurthy
patent: 4853319 (1989-08-01), Krishnamurthy et al.
patent: 4900657 (1990-02-01), Crawley et al.
patent: 5200309 (1993-04-01), Merkel et al.

Affiliated with

Also associated with

Rating

Photographic elements containing 2-equivalent 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 Photographic elements containing 2-equivalent pyrazolone coupler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographic elements containing 2-equivalent pyrazolone coupler will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-561816