GB551028A - A process for recovering organic bases - Google Patents

A process for recovering organic bases

Info

Publication number
GB551028A
GB551028A GB7809/41A GB780941A GB551028A GB 551028 A GB551028 A GB 551028A GB 7809/41 A GB7809/41 A GB 7809/41A GB 780941 A GB780941 A GB 780941A GB 551028 A GB551028 A GB 551028A
Authority
GB
United Kingdom
Prior art keywords
group
organic bases
photographic
kodak
recovering
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
GB7809/41A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB551028A publication Critical patent/GB551028A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29—Development processes or agents therefor
    • G03C5/31—Regeneration; Replenishers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

551,028. Recovering photographic developers. KODAK, Ltd. (Eastman Kodak Co.). June 20, 1941, No. 7809. Drawings to Specification. [Class 2 (iii)] Photographic phenylene diamine or aminophenol developing agents, e.g. Elon p-diethylaminoaniline or 2-amino-5-diethylamino-toluene are extracted from used aqueous solutions thereof, in alkaline condition, by organic solvents such as kerosene, ethers, esters or halogenated compounds, dried and precipitated in the form of the hydrochloride by gaseous hydrogen chloride. Specifications 458,664, [Group XX], 474,353, 478,942 and 481,699 [Group XX], are referred to.
GB7809/41A 1941-02-20 1941-06-20 A process for recovering organic bases Expired GB551028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US379906A US2358053A (en) 1941-02-20 1941-02-20 Process for the recovery of organic compounds from photographic solutions

Publications (1)

Publication Number Publication Date
GB551028A true GB551028A (en) 1943-02-04

Family

ID=23499181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7809/41A Expired GB551028A (en) 1941-02-20 1941-06-20 A process for recovering organic bases

Country Status (3)

Country Link
US (1) US2358053A (en)
FR (1) FR962807A (en)
GB (1) GB551028A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559896A (en) * 1947-08-22 1951-07-10 Eastman Kodak Co Process for purifying n-methyl-p-aminophenol
US2652428A (en) * 1951-05-05 1953-09-15 Eastman Kodak Co N-alkyl-n-(beta-methylsulfonamidoethyl)-p-aminophenols
US3184021A (en) * 1961-09-14 1965-05-18 Benjamin D Alleman Variable speed device
GB1519105A (en) * 1975-12-02 1978-07-26 Fuji Photo Film Co Ltd Treating of photographic processing solutions
JPS54155039A (en) * 1978-05-26 1979-12-06 Chugai Shashin Yakuhin Method of reproducing color photographic bleachhfixing liquid

Also Published As

Publication number Publication date
US2358053A (en) 1944-09-12
FR962807A (en) 1950-06-21

Similar Documents

Publication Publication Date Title
GB767699A (en) Improvements in photographic developer compositions
GB1024612A (en) Improved photographic developers and processes
GB519695A (en) Improvements in colour photographic development
GB551028A (en) A process for recovering organic bases
GB1056455A (en) Photographic processing compositions containing boron compounds
GB1495504A (en) Photographic colour developer compositions
GB669505A (en) Improvements in photographic developing solutions
GB830003A (en) Improvements in photographic silver halide emulsions
GB1067272A (en) Photographic materials for transfer processes involving a heat-development and transfer step
FR1195613A (en) New photographic emulsion oversensitized by heterocyclic bases
GB925313A (en) Production of transfer images by the silver salt diffusion process and sensitive material therefor
GB451030A (en) Improvements in photographic developers
FR1195614A (en) New photographic emulsion oversensitized by styrylic bases
GB518260A (en) An improved method of treating supports having adherent aluminium thereon for the purpose of recovering the aluminium and the material of the support
GB991934A (en) Improved photographic developing agents
GB910288A (en) A process for the production of several positivesfrom one negative by the silver salt diffusion process
GB561203A (en) Improvements in and relating to photographic developers and methods of producing photographic images by development
US2265138A (en) Desensitizing of light sensitive silver halide emulsions
GB553064A (en) Improvements in photographic developers
GB478986A (en) Improvements in and relating to colour forming developers and processes of colour development
FR1192176A (en) New photographic emulsion oversensitized by pyridic bases
GB512060A (en) Improvements relating to photographic development
GB540974A (en) Production of blue-toned photographic images
GB708479A (en) Improvements in or relating to photographic developers
ES292034A1 (en) Procedure for preparing carboxyamidoazoic dyes (Machine-translation by Google Translate, not legally binding)