Blocked photographically useful compounds for use with peroxide-

Details Blocked photographically useful compounds for use with peroxide- Blocked photographically useful compounds for use with peroxide-

1994-11-21

1996-07-23

Shilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430373, 430376, 430380, 430382, 430447, 430544, 430955, 430957, 430958, 430959, 430943, G03C 7305, G03C 7407

Patent

active

055388345

ABSTRACT:
A method is disclosed for developing an image in a photographic element comprising a support, a silver halide emulsion containing an imagewise distribution of developable silver halide grains, and a blocked photographically useful compound comprising a photographically useful group and a blocking group capable of releasing the photographically useful group upon processing the photographic element in the presence of a peroxide, wherein the blocking group comprises an electrophilic group which is solely capable of undergoing a nucleophilic displacement reaction, the electrophilic group being bonded directly or through a releasable timing group to the photographically useful group, with the proviso that when the photographically useful group is a development inhibitor, the blocking group is bonded to the photographically useful group through at least one releasable timing group. The method comprises the step of contacting the photographic element with a processing solution comprising a peroxide.

REFERENCES:
patent: 3230083 (1966-01-01), Simon
patent: 3674478 (1972-07-01), Grasshoff et al.
patent: 3935262 (1976-01-01), Lestina et al.
patent: 3980479 (1976-09-01), Fields et al.
patent: 3993661 (1976-11-01), Grasshoff et al.
patent: 4045225 (1977-08-01), Shimamura et al.
patent: 4278750 (1981-07-01), Chen
patent: 4358525 (1982-11-01), Mooberry et al.
patent: 4371609 (1983-02-01), Kajiwara et al.
patent: 4469780 (1984-09-01), Hirai et al.
patent: 4526860 (1985-07-01), Kitchin
patent: 4554243 (1985-11-01), Ono et al.
patent: 4629683 (1986-12-01), Itoh et al.
patent: 4678739 (1987-07-01), Kitaguchi et al.
patent: 4734353 (1988-03-01), Ono et al.
patent: 4737450 (1988-04-01), Hall et al.
patent: 4892811 (1990-01-01), Yagihara et al.
patent: 5019492 (1991-05-01), Buchanan et al.
patent: 5210097 (1993-05-01), Texter et al.
patent: 5240821 (1993-08-01), Texter et al.
patent: 5256525 (1993-10-01), Southby et al.
62-187850, Patent Abstract of Japan, Aug. 17, 1987, vol. 12, No. 42.
62-147457, Patent Abstract of Japan, Jul. 1, 1987, vol. 11, No. 378.

Affiliated with

Also associated with

Rating

Blocked photographically useful compounds for use with peroxide- does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Blocked photographically useful compounds for use with peroxide-, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blocked photographically useful compounds for use with peroxide- will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-712021