GB813253A - Improvements in photographic light sensitive materials - Google Patents

Improvements in photographic light sensitive materials

Info

Publication number
GB813253A
GB813253A GB10437/56A GB1043756A GB813253A GB 813253 A GB813253 A GB 813253A GB 10437/56 A GB10437/56 A GB 10437/56A GB 1043756 A GB1043756 A GB 1043756A GB 813253 A GB813253 A GB 813253A
Authority
GB
United Kingdom
Prior art keywords
prepared
phenoxycatechol
slowly
mixture
iodoveratrol
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
GB10437/56A
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB813253A publication Critical patent/GB813253A/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
    • G03C5/315Tanning development
    • 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
    • G03C5/3021Developers with oxydisable hydroxyl or amine groups linked to an aromatic ring

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

4-Iodoveratrol is prepared by adding a carbon tetrachloride solution of iodine slowly to a dry mixture of silver trifluoroacetate and veratrol. 4-Phenoxycatechol dimethyl ether is prepared by heating together a mixture of 4-iodoveratrol, sodium phenate, and copper powder. 4-Phenoxycatechol is prepared by adding 4-phenoxycatechol dimethyl ether slowly to a melted mixture of anhydrous aluminium chloride and sodium chloride. 4-(2-Cyclopentenyl)-catechol is prepared by adding cyclopentadiene slowly to a suspension of catechol and phosphoric acid in toluene. 1 : 2-Diethoxalyl-4-phenylcatechol is prepared by reacting 4-phenylcatechol and ethoxalyl chloride in dioxane and quinoline. 1 : 2-Diethoxalyl - 4 - phenoxycatechol and 1 : 2 : 3-triethoxalylpyrogallol are similarly prepared. Specifications 655,273, 655,274, 721,071, 725,667 and 813,254, [all in Group XX], are referred to.
GB10437/56A 1955-04-05 1956-04-05 Improvements in photographic light sensitive materials Expired GB813253A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US499504A US2751295A (en) 1955-04-05 1955-04-05 Photographic emulsions containing tanning developing agents

Publications (1)

Publication Number Publication Date
GB813253A true GB813253A (en) 1959-05-13

Family

ID=23985514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10437/56A Expired GB813253A (en) 1955-04-05 1956-04-05 Improvements in photographic light sensitive materials

Country Status (5)

Country Link
US (1) US2751295A (en)
BE (1) BE546665A (en)
DE (1) DE1019556B (en)
FR (1) FR1180619A (en)
GB (1) GB813253A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084290A2 (en) * 1981-12-10 1983-07-27 Ciba-Geigy Ag Photographic silver halide material containing substituted hydroquinone compounds
EP0209118A2 (en) 1985-07-17 1987-01-21 Konica Corporation Silver halide photographic material
EP0239363A2 (en) 1986-03-25 1987-09-30 Konica Corporation Light-sensitive silver halide photographic material feasible for high speed processing

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061434A (en) * 1957-08-26 1962-10-30 Polaroid Corp Novel substituted silver halide developing agents
BE586348A (en) * 1959-01-10
US3230083A (en) * 1959-04-02 1966-01-18 Polaroid Corp Photographic processes and products
US3230084A (en) * 1959-05-18 1966-01-18 Polaroid Corp Novel photographic products and processes
US3230082A (en) * 1962-05-14 1966-01-18 Polaroid Corp Color processes and products
US3330661A (en) * 1962-11-13 1967-07-11 Eastman Kodak Co Photographic development precursors
US3291609A (en) * 1964-06-05 1966-12-13 Eastman Kodak Co Developer incorporated photographic materials
US3295973A (en) * 1965-11-03 1967-01-03 Polaroid Corp Novel photographic products and processes
US4010036A (en) * 1972-06-30 1977-03-01 Konishiroku Photo Industry Co., Ltd. Lith-type silver halide photosensitive material containing a p-benzoquinone derivative
JPS6015262B2 (en) * 1979-02-26 1985-04-18 富士写真フイルム株式会社 Silver halide photographic material
JPS5625729A (en) * 1979-08-07 1981-03-12 Fuji Photo Film Co Ltd Silver halide photographic material
JPH07110836B2 (en) * 1989-01-12 1995-11-29 日本ペイント株式会社 Poly (α-keto ester) compound
US6479198B2 (en) * 2000-02-01 2002-11-12 Fuji Photo Film Co., Ltd. Silver halide light-sensitive material containing tanning developing agent

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084290A2 (en) * 1981-12-10 1983-07-27 Ciba-Geigy Ag Photographic silver halide material containing substituted hydroquinone compounds
EP0084290A3 (en) * 1981-12-10 1984-04-18 Ciba-Geigy Ag Photographic silver halide material containing substituted hydroquinone compounds
EP0209118A2 (en) 1985-07-17 1987-01-21 Konica Corporation Silver halide photographic material
EP0239363A2 (en) 1986-03-25 1987-09-30 Konica Corporation Light-sensitive silver halide photographic material feasible for high speed processing

Also Published As

Publication number Publication date
US2751295A (en) 1956-06-19
DE1019556B (en) 1957-11-14
FR1180619A (en) 1959-06-08
BE546665A (en)

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