GB850958A - Improvements in purification of photographic emulsions - Google Patents

Improvements in purification of photographic emulsions

Info

Publication number
GB850958A
GB850958A GB887558A GB887558A GB850958A GB 850958 A GB850958 A GB 850958A GB 887558 A GB887558 A GB 887558A GB 887558 A GB887558 A GB 887558A GB 850958 A GB850958 A GB 850958A
Authority
GB
United Kingdom
Prior art keywords
membrane
permeable
chambers
photographic emulsions
membranes
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
GB887558A
Inventor
Joseph Lawrence Noble
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.)
Suez WTS Systems USA Inc
Original Assignee
Ionics Inc
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 Ionics Inc filed Critical Ionics Inc
Publication of GB850958A publication Critical patent/GB850958A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • 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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/015—Apparatus or processes for the preparation of emulsions
    • 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
    • G03C2200/00—Details
    • G03C2200/09—Apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Urology & Nephrology (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

850,958. Electrodialysis of photographic emulsions. IONICS Inc. March 19, 1958, No. 8875/58. Drawings to Specification. Class 41 Gelatine photographic emulsions containing a silver halide and dissolved ionic materials are purified by passing an aqueous suspension of the emulsion through an electrolytic chamber bounded on at least one side by a semi-permeable membrane permeable selectively to ions of one predetermined polarity, passing an electrolytic solution on the opposite side of said membrane and applying an electric potential across the membrane to cause ions of the said polarity to pass from the said aqueous suspension to the said electrolytic solution. The emulsion may be passed through a chamber bounded on opposite sides by other chambers and separated therefrom by cation-permeable and anion-permeable membranes respectively; these chambers may form part of a plurality of treating chambers having washing chambers on either side separated therefrom by perm-selective membranes. Suitable membranes may be ion-exchange resins in membrane form or impregnated in or coated on a suitable support. Specification 720,002 is referred to.
GB887558A 1958-01-10 1958-03-19 Improvements in purification of photographic emulsions Expired GB850958A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI14235A DE1079452B (en) 1958-01-10 1958-01-10 Process for making photographic emulsions

Publications (1)

Publication Number Publication Date
GB850958A true GB850958A (en) 1960-10-12

Family

ID=7185619

Family Applications (1)

Application Number Title Priority Date Filing Date
GB887558A Expired GB850958A (en) 1958-01-10 1958-03-19 Improvements in purification of photographic emulsions

Country Status (3)

Country Link
BE (1) BE565776A (en)
DE (1) DE1079452B (en)
GB (1) GB850958A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4060419A (en) * 1976-04-01 1977-11-29 Polaroid Corporation Method of forming silver halide grains by electrolysis
US4102758A (en) * 1977-03-07 1978-07-25 Polaroid Corporation Method of electrolytically forming silver halide grains utilizing a novel cathode
US4102759A (en) * 1977-03-07 1978-07-25 Polaroid Corporation Method of electrolytically forming silver halide grains utilizing a novel anode
FR2346741A1 (en) * 1976-04-01 1977-10-28 Polaroid Corp PROCESS FOR FORMING SILVER HALOGENIDE GRAINS BY ELECTROLYSIS
US5424180A (en) * 1990-03-27 1995-06-13 Fuji Photo Film Co., Ltd. Apparatus for uniform mixing of solutions

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB638457A (en) * 1947-02-06 1950-06-07 Du Pont Improvements in or relating to photographic emulsions
BE496550A (en) * 1949-07-09
BE504756A (en) * 1950-07-21
DE1000686B (en) * 1954-10-22 1957-01-10 Ladislav Krivanek Process and apparatus for the continuous production of photographic emulsions

Also Published As

Publication number Publication date
BE565776A (en)
DE1079452B (en) 1960-04-07

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