US4226934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light sensitive photographic material containing development inhibitor releasing compounds
Assignee: Novartis AG
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Filing: 1978-07-26
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Granted: 1980-10-07
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Expires: 1998-07-26
Abstract
Abstract A light-sensitive photographic material is provided which comprises, coated on a photobase, at least one silver halide emulsion layer, said emulsion layer or a layer adjacent thereto containing a development inhibitor releasing compound of the formula ##STR1## wherein R 1 is substituted phenyl which contains a ballasting alkyl group, R 2 represents the atoms necessary to complete a five or six membered heterocyclic ring system which may be further substituted and R 3 is an aryl or heterocyclic radical, any of which ring systems may be further substituted, the group --S--R 3 being a development inhibiting group.
Inventors
- 👤 Terence C. Webb
- 👤 David L. R. Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:21
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; C07D231/00; C07D231/02; C07D231/10; C07D231/12; C07D233/00; C07D233/54; C07D233/56; C07D249/00; C07D249/02; C07D249/08; C07D249/10; C07D249/12; G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
126 words
A light-sensitive photographic material which comprises, coated on a photobase, at least one silver halide emulsion layer, said emulsion layer or a layer adjacent thereto containing a development inhibitor releasing compound of the formula ##STR15## wherein R 1 is a group of the formulae ##STR16## wherein L is --SO 2 -- or --CO-- and R 4 is a ballasting alkyl group or contains an unsubstituted or substituted ballasting alkyl group of at least 10 carbon atoms, R 2 represents the atoms necessary to complete a tetrazole, triazole, pyrazole or imidazole ring system which is unsubstituted or substituted by alkyl or alkylthio and R 3 is unsubstituted or substituted pyrimidyl, thiadiazolyl, triazinyl, tetrazolyl, triazolyl, pyridyl, phenyl or benzthiazolyl the groups --S--R 3 being the development inhibiting group.
Claim 2
Dependent Claim
126 words
A light-sensitive photographic material which comprises, coated on a photobase, at least one silver halide emulsion layer, said emulsion layer or a layer adjacent thereto containing a development inhibitor releasing compound of the formula ##STR15## wherein R 1 is a group of the formulae ##STR16## wherein L is --SO 2 -- or --CO-- and R 4 is a ballasting alkyl group or contains an unsubstituted or substituted ballasting alkyl group of at least 10 carbon atoms, R 2 represents the atoms necessary to complete a tetrazole, triazole, pyrazole or imidazole ring system which is unsubstituted or substituted by alkyl or alkylthio and R 3 is unsubstituted or substituted pyrimidyl, thiadiazolyl, triazinyl, tetrazolyl, triazolyl, pyridyl, phenyl or benzthiazolyl the groups --S--R 3 being the development inhibiting group.
Claim 3
Dependent Claim
33 words
A light sensitive material according to claim 1, wherein R 3 is pyrimidyl, thiadiazolyl, triazinyl, triazolyl, tetrazolyl or phenyl which is unsubstituted or substituted by carboxyl, nitro or C 1 -C 18 -acylamino.
Claim 4
Dependent Claim
113 words
A light sensitive photographic material according to claim 1, wheerein R 1 is a group of the formulae ##STR17## wherein L is --SO 2 -- or --CO-- and R 5 is alkyl of 10 to 18 carbon atoms, R 2 represents the atoms necessary to complete an optionally alkyl of 1 to 4 carbon atoms or alkylthio of 1 to 8 carbon atoms substituted tetrazole, triazole, pyrazole or imidazole ring system and R 3 is pyrimidyl, thiadiazolyl, triazinyl, tetrazolyl or triazolyl, pyridyl optionally substituted by alkyl of 1 to 4 carbon atoms or hydroxyl or phenyl optionally substituted by carboxyl, nitro or acylamino, wherein acyl contains 1 to 18 carbon atoms, or benzthiazolyl.
Claim 5
Dependent Claim
18 words
A light sensitive photographic material according to claim 3, wherein R 3 is a phenyl substituted tetrazole group.
Claim 6
Dependent Claim
20 words
A light-sensitive photographic material according to claim 1 wherein the DIR compound is present in the silver halide emulsion layer.
Claim 7
Dependent Claim
76 words
A process for the production of a photographic image which comprises imagewise exposing a light-sensitive photographic silver halide material which contains in at least one silver halide layer or a layer adjacent thereto a compound of formula ##STR18## wherein R 1 , R 2 and R 3 have the meanings indicated in claim 1 and developing the exposed silver halide with a paraphenylene diamine colour developing agent thereby to liberate imagewise the group R 3 -S.sup.⊖.
Claim 8
Dependent Claim
83 words
A process according to claim 6, wherein R 1 is a group of the formulae ##STR19## wherein L is --SO 2 -- or --CO-- and R 4 is a ballasting alkyl group or contains an optionally substituted ballasting alkyl group of at least 10 carbon atoms, R 2 represents the atoms necessary to complete a tetrazole, triazole, pyrazole or imidazole ring system optionally substituted by alkyl or alkylthio, and R 3 is optionally substituted pyrimidyl, thiadiazolyl, triazinyl, tetrazolyl, triazolyl, pyridyl, phenyl or benzthiazolyl.
Claim 9
Dependent Claim
20 words
A process according to claim 7, wherein R 3 is pyrimidyl, thiadiazolyl, triazinyl, triazolyl, tetrazolyl or an optionally substituted phenyl.
Claim 10
Dependent Claim
109 words
A process according to claim 7, wherein R 1 is a group of the formula ##STR20## wherein L is --SO 2 -- or --CO-- and R 5 is alkyl of 10 to 18 carbon atoms, R 2 represents the atoms necessary to complete an optionally alkyl of 1 to 4 carbon atoms or alkylthio of 1 to 8 carbon atoms substituted tetrazole, triazole, pyrazole or imidazole ring system and R 3 is pyrimidyl, thiadiazolyl, triazinyl, tetrazolyl or triazolyl, pyridyl optionally substituted by alkyl of 1 to 4 carbon atoms or hydroxyl, or phenyl optionally substituted by carboxyl, nitro or acylamino, wherein acyl contains to 18 carbon atoms, or benzthiazolyl.
Claim 11
Dependent Claim
15 words
A process according to claim 9, wherein R 3 is a phenyl substituted tetrazole group.
References Cited (Backward Citations)
US3632345A
Cited
US3632373A
Cited
US3856588A
Cited
US3928041A
Cited
US3890169A
Cited
US4075021A
Cited
US4055443A
Cited
US4058413A
Cited
US4121934A
Cited
US4116722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |