US5352570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and photographic material and process comprising a benzotriazole compound
Assignee: Eastman Kodak Co
•
Filing: 1991-06-28
•
Granted: 1994-10-04
•
Expires: 2011-06-28
Abstract
Abstract A new method of preparation of a single isomer of a benzotriazole compound comprises the step of reacting a benzotriazole compound containing symmetrical substituents on the benzo ring with phosgene to produce the corresponding carbamyl chloride. The carbamyl chloride can be reacted with a timeing group of a coupling-off group of a photographic coupler to form a photographic development inhibitor releasing coupler. Such compounds are useful in photographic materials and processes.
Inventors
- 👤 William J. Begley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:34
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/18; G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30541; G03C7/30558; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
77 words
A color photographic element comprising a support bearing at least one photographic silver halide emulsion layer and at least one benzotriazole development inhibitor releasing naphtholic wash-out coupler which forms a dye that is capable of being washed out of the photographic element upon processing comprising an amide water solubilizing group in the 2-position of the naphthol moiety wherein the benzotriazole development inhibitor is represented by the formula: ##STR16## wherein R 1 O is an unsubstituted alkoxy group.
Claim 2
Dependent Claim
77 words
A color photographic element comprising a support bearing at least one photographic silver halide emulsion layer and at least one benzotriazole development inhibitor releasing naphtholic wash-out coupler which forms a dye that is capable of being washed out of the photographic element upon processing comprising an amide water solubilizing group in the 2-position of the naphthol moiety wherein the benzotriazole development inhibitor is represented by the formula: ##STR16## wherein R 1 O is an unsubstituted alkoxy group.
Claim 3
Dependent Claim
84 words
A color photographic element comprising a support bearing at least one photographic silver halide emulsion layer and at least one benzotriazole development inhibitor releasing naphtholic wash-out coupler which forms a dye that is capable of being washed out of the photographic element upon processing comprising an amide water solubilizing group selected from CONH 2 and CONHCH 3 in the 2-position of the naphthol moiety wherein the benzotriazole development inhibitor is represented by the formula: ##STR17## wherein R 1 O is an unsubstituted alkoxy group.
Claim 4
Dependent Claim
84 words
A color photographic element comprising a support bearing at least one photographic silver halide emulsion layer and at least one benzotriazole development inhibitor releasing naphtholic wash-out coupler which forms a dye that is capable of being washed out of the photographic element upon processing comprising an amide water solubilizing group selected from CONH 2 and CONHCH 3 in the 2-position of the naphthol moiety wherein the benzotriazole development inhibitor is represented by the formula: ##STR17## wherein R 1 O is an unsubstituted alkoxy group.
Claim 5
Dependent Claim
42 words
A color photographic element as in claim 2 wherein the benzotriazole development inhibitor releasing coupler is represented by the formula: ##STR18## wherein OR 1 is an unsubstituted alkoxy group; TIME is a photographic timing group; and n is 0, 1 or 2.
Claim 6
Dependent Claim
15 words
A color photographic element as in claim 3 wherein TIME comprises a ballasted carbamate group.
Claim 7
Dependent Claim
18 words
A color photographic element as in claim 2 wherein the amide water solubilizing group is --CONH 2 .
References Cited (Backward Citations)
US3227554A
Cited
US3617291A
Cited
US4248962A
Cited
US4409323A
Cited
US4477563A
Cited
US4725529A
Cited
US4812389A
Cited
US4798784A
Cited
US4830954A
Cited
US4804619A
Cited
EP0283242A2
Cited
US5085979A
Cited
US4861701A
Cited
US5169746A
Cited
US5026628A
Cited
US5151343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-03 | 1998-04-04 | 1998-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-03 | 2002-04-04 | 2002-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-03 | 2006-04-04 | 2006-10-04 | $7700.00 | Window Closed / Lapsed |