US4233399A
Expired / Lapsed
US
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Photographic elements containing amino-substituted hydroxy-pyridones
Assignee: Ilford Imaging UK Ltd
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Filing: 1979-05-08
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Granted: 1980-11-11
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Expires: 1999-05-08
Abstract
Abstract Pyridone dyestuffs of the formula ##STR1## are provided wherein R 1 is hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or an optionally substituted amino group, R 2 , R 3 , R 4 each independently represent hydrogen, halogen, alkoxy, or optionally substituted alkyl or cycloalkyl, R 5 and R 6 each independently represent hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or R 5 and R 6 , R 3 and R 5 and R 4 and R 6 form heterocyclic rings, Y is hydrogen or hydroxy, --CN, --COOR 7 , --CONR 7 R 8 or --COR 7 or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical, and Z represents --CN, --COOR 9 , --CONR 9 R 10 , --SO 3 H, --SO 3 ⊖ or --COR 9 , where R 7 , R 8 , R 9 and R 10 each independently represent hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical. The dyestuffs can be used e.g. as cyan image dyestuffs in photographic material, as diffusible dyes which may become mordanted in a receptor layer or as filter, antihalation or acutance dyes in photographic material.
Inventors
- 👤 Rainer Kitzing
- 👤 John G. V. Scott
- 👤 Terence C. Webb
- 👤 Graham Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:57
CPC Classifications
C; C09; C09B; C09B53/00; C09B53/02; G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
209 words
Light-sensitive photographic material which comprises in at least one layer thereof a dyestuff of the general formula ##STR15## wherein R 1 is hydrogen, alkyl of 1 to 6 carbon atoms, hydroxyalkyl of 1 to 6 carbon atoms, alkoxyalkyl of 1 to 6 carbon atoms each in the alkyl and the alkoxy radical, phenyl, benzyl, β-phenylethyl or cyclohexyl, R 2 is hydrogen, chloro, alkyl, hydroxyalkyl or alkoxy each of 1 to 6 carbon atoms, R 3 is hydrogen, alkyl or alkoxy of 1 to 6 carbon atoms, R 4 is hydrogen or alkyl of 1 to 6 carbon atoms, R 5 and R 6 are hydrogen, alkyl or hydroxyalkyl of 1 to 6 carbon atoms, alkoxyalkyl of 1 to 6 carbon atoms each in the alkyl and the alkoxy radical, carboxyalkyl with 1 to 3 carbon atoms in the alkyl radical, β-methylsulphonamidoethyl or sulpho-n-butyl, R 5 and R 6 and the nitrogen atom to which they are attached are piperidine, morpholine, piperazine or pyrrolidine, Y is hydrogen, alkyl of 1 to 6 carbon atoms, hydroxy, --COOR 11 or --COONR 11 R 12 and Z is --CN, --COOR 11 or --CONR 11 R 12 , wherein R 11 and R 12 are hydrogen or alkyl of 1 to 3 carbon atoms.
Claim 2
Dependent Claim
209 words
Light-sensitive photographic material which comprises in at least one layer thereof a dyestuff of the general formula ##STR15## wherein R 1 is hydrogen, alkyl of 1 to 6 carbon atoms, hydroxyalkyl of 1 to 6 carbon atoms, alkoxyalkyl of 1 to 6 carbon atoms each in the alkyl and the alkoxy radical, phenyl, benzyl, β-phenylethyl or cyclohexyl, R 2 is hydrogen, chloro, alkyl, hydroxyalkyl or alkoxy each of 1 to 6 carbon atoms, R 3 is hydrogen, alkyl or alkoxy of 1 to 6 carbon atoms, R 4 is hydrogen or alkyl of 1 to 6 carbon atoms, R 5 and R 6 are hydrogen, alkyl or hydroxyalkyl of 1 to 6 carbon atoms, alkoxyalkyl of 1 to 6 carbon atoms each in the alkyl and the alkoxy radical, carboxyalkyl with 1 to 3 carbon atoms in the alkyl radical, β-methylsulphonamidoethyl or sulpho-n-butyl, R 5 and R 6 and the nitrogen atom to which they are attached are piperidine, morpholine, piperazine or pyrrolidine, Y is hydrogen, alkyl of 1 to 6 carbon atoms, hydroxy, --COOR 11 or --COONR 11 R 12 and Z is --CN, --COOR 11 or --CONR 11 R 12 , wherein R 11 and R 12 are hydrogen or alkyl of 1 to 3 carbon atoms.
Claim 3
Dependent Claim
27 words
Light-sensitive photographic material according to claim 1 wherein the layer which contains the dye is a resin backing layer on the reverse side to the photosensitive layer.
Claim 4
Dependent Claim
82 words
Light-sensitive material according to claim 2 wherein the dye is of the formula ##STR16## wherein R 1 is alkyl of 1 to 6 carbon atoms, R 2 is hydrogen or alkyl of 1 to 3 carbon atoms and R 5 and R 6 are alkyl of 1 to 4 carbon atoms, hydroxyalkyl of 2 to 4 carbon atoms or R 5 and R 6 together with the nitrogen atom to which they are attached are a piperidine, morpholine, piperazine or pyrrolidine ring.
Claim 5
Dependent Claim
15 words
Light-sensitive photographic material according to claim 3 wherein the dye corresponds to the formula ##STR17##
Claim 6
Dependent Claim
18 words
Light-sensitive photographic material according to claim 1 wherein the layer which contains the dye is an anti-halation underlayer.
Claim 7
Dependent Claim
83 words
Light-sensitive photographic material according to claim 5 wherein the dye corresponds to the formula ##STR18## wherein R 1 is alkyl of 1 to 6 carbon atoms, R 2 is hydrogen or alkyl of 1 to 3 carbon atoms and R 5 and R 6 are alkyl of 1 to 4 carbon atoms, hydroxyalkyl of 2 to 4 carbon atoms or R 5 and R 6 together with the nitrogen atom to which they are attached are a piperidine, morpholine, piperazine or pyrrolidine ring.
Claim 8
Dependent Claim
15 words
Light-sensitive photographic material according to claim 6 wherein the dye corresponds to the formula ##STR19##
Claim 9
Dependent Claim
22 words
Light-sensitive photographic material according to claim 1 wherein the layer which contains the dye is a colloid filter layer between light-sensitive layers.
Claim 10
Dependent Claim
16 words
Light-sensitive photographic material according to claim 8 wherein the dye is present as an oil dispersion.
Claim 11
Dependent Claim
83 words
Light-sensitive photographic material according to claim 8, wherein the dye corresponds to the formula ##STR20## wherein R 1 is alkyl of 1 to 6 carbon atoms, R 2 is hydrogen or alkyl of 1 to 3 carbon atoms and R 5 and R 6 are alkyl of 1 to 4 carbon atoms, hydroxyalkyl of 2 to 4 carbon atoms or R 5 and R 6 together with the nitrogen atom to which they are attached are a piperidine, morpholine, piperazine or pyrrolidine ring.
Claim 12
Dependent Claim
15 words
Light-sensitive photographic material according to claim 10 wherein the dye corresponds to the formula ##STR21##
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-11 | 1984-05-12 | 1984-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-11 | 1988-05-12 | 1988-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-11 | 1992-05-12 | 1992-11-11 | $7700.00 | Window Closed / Lapsed |