GB1008694A - Manufacture of silver halide emulsions - Google Patents

Manufacture of silver halide emulsions

Info

Publication number
GB1008694A
GB1008694A GB17712/62A GB1771262A GB1008694A GB 1008694 A GB1008694 A GB 1008694A GB 17712/62 A GB17712/62 A GB 17712/62A GB 1771262 A GB1771262 A GB 1771262A GB 1008694 A GB1008694 A GB 1008694A
Authority
GB
United Kingdom
Prior art keywords
gelatin
silver halide
ammonium sulphate
weight
silver
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
GB17712/62A
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.)
Gevaert Photo Producten NV
Original Assignee
Gevaert Photo Producten NV
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 Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Publication of GB1008694A publication Critical patent/GB1008694A/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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1, 008, 694. Preparing photographic emulsions. GEVAERT PHOTO-PRODUCTEN N.V. May 8, 1962 [May 8, 1961], No. 17712/62. Heading G2E. Gelatino silver halide emulsions are prepared by reacting silver nitrate with an alkali metal halide in an aqueous solution containing gelatin thus precipitating the silver halide in gelatin, the amount of gelatin being not more than 2% by weight of water and the ratio of gelatin to silver nitrate being between 2:100 and 25:100 by weight, physically ripening the silver halide, co-precipitating the gelatin and silver halide by adding an aqueous solution of ammonium sulphate or a mixture of ammonium sulphate and sulphuric acid so that the pull is kept above 7, removing the supernatant liquid, hardening the gelatin and removing residual silver nitrate by washing. Preferably between 5 and 20% by weight of ammonium sulphate is used and more ammonium sulphate is added to harden the gelatin. Specification 655,082 is referred to.
GB17712/62A 1961-05-08 1962-05-08 Manufacture of silver halide emulsions Expired GB1008694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2040625 1961-05-08

Publications (1)

Publication Number Publication Date
GB1008694A true GB1008694A (en) 1965-11-03

Family

ID=3864747

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17712/62A Expired GB1008694A (en) 1961-05-08 1962-05-08 Manufacture of silver halide emulsions

Country Status (4)

Country Link
US (1) US3153593A (en)
BE (1) BE603491A (en)
DE (1) DE1148867B (en)
GB (1) GB1008694A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436220A (en) * 1964-11-27 1969-04-01 Gaf Corp Preparation of photographic silver halide emulsions utilizing polyoxalkylenated gelating derivatives
US3620752A (en) * 1969-03-12 1971-11-16 Tatsuro Matsuo Precipitating silver halide in 0.5 to 3 percent weight aqueous gelatin solution
JPH05504423A (en) * 1990-12-20 1993-07-08 イーストマン コダック カンパニー Thickener for photographic emulsion delivery
US9238774B2 (en) 2012-11-02 2016-01-19 Empire Technology Development Llc Soil fixation, dust suppression and water retention
US9174871B2 (en) 2012-11-02 2015-11-03 Empire Technology Development Llc Cement slurries having pyranose polymers
US9212245B2 (en) 2012-12-04 2015-12-15 Empire Technology Development Llc High performance acrylamide adhesives

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2126516A (en) * 1934-09-15 1938-08-09 Szasz Geza Photographic process
BE484329A (en) * 1947-11-19
BE528741A (en) * 1953-05-11
BE561484A (en) * 1956-06-19
US3031304A (en) * 1958-08-20 1962-04-24 Albert J Oliver Fine grain nuclear emulsion
US3007796A (en) * 1959-02-25 1961-11-07 Gen Foods Corp Process for preparing photographic emulsions
US3067035A (en) * 1959-04-01 1962-12-04 Du Pont Gelatin-anion soap complex dispersion in polyvinyl alcohol photographic emulsions

Also Published As

Publication number Publication date
US3153593A (en) 1964-10-20
DE1148867B (en) 1963-05-16
BE603491A (en)

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