GB795476A - Process for the production of photographic colour images by colour development - Google Patents

Process for the production of photographic colour images by colour development

Info

Publication number
GB795476A
GB795476A GB19856/55A GB1985655A GB795476A GB 795476 A GB795476 A GB 795476A GB 19856/55 A GB19856/55 A GB 19856/55A GB 1985655 A GB1985655 A GB 1985655A GB 795476 A GB795476 A GB 795476A
Authority
GB
United Kingdom
Prior art keywords
amino
aminopyrazoline
dihydrochloride
sulphophenyl
pyrazolone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB19856/55A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert NV
Original Assignee
Agfa AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agfa AG filed Critical Agfa AG
Publication of GB795476A publication Critical patent/GB795476A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29Development processes or agents therefor
    • G03C5/30Developers
    • G03C5/3028Heterocyclic compounds
    • G03C5/3035Heterocyclic compounds containing a diazole ring

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

795,476. Photographic colour development. AGFA AKT.-GES FUR PHOTOFABRIKATION. July 8, 1955 [July 8, 1954], No. 19856/55. Class 98(2) In photographic colour development, 1- (p - aminophenyl) - 3 - aminopyrazoline or a derivative thereof unsubstituted in both amino groups is used as the colour developing substance. The derivative may be one in which one or more hydrogen atoms in the 1 - phenyl nucleus are replaced by halogen atoms or by alkyl or substituted alkyl alkoxy, or sulpho groups. Derivatives specified are 1 - (4<SP>1</SP> - amino - 3<SP>1</SP> - methoxyphenyl)-, 1 (4<SP>1</SP> - amino - 3<SP>1</SP>-methylphenyl)-, 1 - (4<SP>1</SP> - amino - 2<SP>1</SP> - methylphenyl)-, 1 - (4<SP>1</SP> - amino, - 3<SP>1</SP> - # - hydroxyethylphenyl)-, and 1 - (4<SP>1</SP> - amino - 3' - # - carboxyethylphenyl) - 3 - aminopyrazoline dihydrochloride. In Example 1, an exposed silver halide emulsion containing 1 - (4<SP>1</SP> - sulphophenyl) - 3 - palmityl - 5 - pyrazolone is colour developed in 3 minutes to a gamma of 0.7 in a solution containing 1 - (p-aminophenyl) - 3 - aminopyrazolone dihydrochloride, potassium carbonate, potassium bromide and sodium sulphite, as contrasted with a time of 7 minutes to reach the same gamma in a colour developer containing 4 - amino - N - ethyl : N - # - hydroxyethylaniline. A table is given showing the difference in the colours obtained using the two colour developing agents and the following couplers: 4<SP>1</SP> - stearylaminobenzoylacet - 3 : 5 - dicarboxyanilide, 1 - p - sulphophenyl - 3 - heptadecyl.- 5 - pyrazolone, 1 - naphthol 4 - sulpho - 2 - N - octadecylnaphthamide, 4 - # - octadecylsuccinamylbenzoylacetonitrile, and 1 - p - sulphophenyl - 3 - (4<SP>1</SP> - stearylaminobenzamido) - 5 - pyrazolone. Similar data are given for the colour developing agents 1-(41-amino - 3' - methoxyphenyl) - 3 - aminopyrazoline and 1 - (4<SP>1</SP> amino - 2' - methylphenyl) - 3 - aminopyrazoline, both compared with 4 - amino - N - ethyl : N - # - hydroxyethylaniline, and the coupler 1 - p - sulphophenyl - 3 - heptadecyl - 5 - pyrazolone. In examples 2 to 7, the colour developing agent and the coupler are (2) 1 - (4<SP>1</SP> - amino - 31 - methoxyphenyl) - 3 - aminopyrazoline dihydrochloride and 1 - (4<SP>1</SP> - sulphophenyl) - 3 - palmityl - 5 - pyrazolone; (3) 1 - (41 - amino - 3<SP>1</SP> - chlorophenyl) - 3 - aminopyrazoline dihydrochloride and 1 - hydroxy - 4 - sulpho - 2 - naphthoyl - stearylamilide; (4) 1 - (4<SP>1</SP> - amino - 31 - methylphenyl) - 3 - aminopyrazoline dihydrochloride and 4<SP>1</SP> - stearylaminobenzoylacet - 3 : 5 - dicarboxyanilide; (5) 1 - (4<SP>1</SP> - amino - 2<SP>1</SP> - methylphenyl) - 3 - aminopyrazoline dihydrochloride and 4 - #-octadecylsuccinamylbenzoylacetonitrile; (6) 1 - (4<SP>1</SP> - amino - 3<SP>1</SP> - methoxyphenyl) - 3 - aminopyrazoline dihydrochloride and 1 - (4<SP>1</SP> - sulphophenyl) - 3 - palmityl - 5 - pyrazolone; and (7) 1 - (4<SP>1</SP> - amino - 3<SP>1</SP> - chlorophenyl) - 3 - aminopyrazoline dihydrochloride and 1 - hydroxy - 4 - sulpho - 2 - naphthoyl - stearylanilide. Specifications 757,840 and 776,322 [Group IV(b)] are referred to.
GB19856/55A 1954-07-08 1955-07-08 Process for the production of photographic colour images by colour development Expired GB795476A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA20693A DE955026C (en) 1954-07-08 1954-07-08 Process for producing colored images by color development

Publications (1)

Publication Number Publication Date
GB795476A true GB795476A (en) 1958-05-21

Family

ID=6924750

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19856/55A Expired GB795476A (en) 1954-07-08 1955-07-08 Process for the production of photographic colour images by colour development

Country Status (6)

Country Link
US (1) US2892714A (en)
BE (1) BE539271A (en)
CH (1) CH336259A (en)
DE (1) DE955026C (en)
FR (1) FR1126757A (en)
GB (1) GB795476A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE611885A (en) * 1960-12-24
US3547646A (en) * 1966-12-16 1970-12-15 Keuffel & Esser Co Light-sensitive imaging material containing hydrazones

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB542502A (en) * 1940-07-10 1942-01-13 John David Kendall Improvements in or relating to photographic development processes
US2533514A (en) * 1947-11-19 1950-12-12 Eastman Kodak Co Photographic emulsions containing color couplers and amide coupler solvents
DE875048C (en) * 1950-04-06 1953-04-30 Ilford Ltd Process for the preparation of 3-pyrazolidones
DE870418C (en) * 1950-04-06 1953-03-12 Ilford Ltd Process for the preparation of pyrazoline compounds

Also Published As

Publication number Publication date
BE539271A (en)
CH336259A (en) 1959-02-15
DE955026C (en) 1956-12-27
FR1126757A (en) 1956-11-30
US2892714A (en) 1959-06-30

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