GB911886A - Process for the production of photographic silver halide emulsions - Google Patents

Process for the production of photographic silver halide emulsions

Info

Publication number
GB911886A
GB911886A GB4510/61A GB451061A GB911886A GB 911886 A GB911886 A GB 911886A GB 4510/61 A GB4510/61 A GB 4510/61A GB 451061 A GB451061 A GB 451061A GB 911886 A GB911886 A GB 911886A
Authority
GB
United Kingdom
Prior art keywords
acid
vinyl pyridine
production
silver halide
styrene
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
GB4510/61A
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.)
Koepff & Sohne GmbH
Original Assignee
Koepff & Sohne GmbH
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 Koepff & Sohne GmbH filed Critical Koepff & Sohne GmbH
Publication of GB911886A publication Critical patent/GB911886A/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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/34—Introducing sulfur atoms or sulfur-containing groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2800/00—Copolymer characterised by the proportions of the comonomers expressed
    • C08F2800/20—Copolymer characterised by the proportions of the comonomers expressed as weight or mass percentages

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

4-Vinyl pyridine and acrylic acid are copolymerized in aqueous solution with potassium persulphate as catalyst, and the product is sulphonated with concentrated sulphuric acid and cadmium chloride. A sulphonated copolymer of 4-vinyl pyridine and styrene is similarly prepared. Reference is made to copolymers of 4-vinyl pyridine mono- or disulphonic acid with acrylic acid, methacrylic acid, acrylates, methacrylates, methylchloroacrylates, acrylonitrile, methylacrylonitrile, acrylamide, styrene sulphonic acid, or divinyl benzene sulphonic acid, or with mixtures of acrylic acid and acrylates, acrylonitrile or styrene sulphonic acid.
GB4510/61A 1960-03-15 1961-02-07 Process for the production of photographic silver halide emulsions Expired GB911886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK40170A DE1140813B (en) 1960-03-15 1960-03-15 Process for making photographic silver halide emulsions

Publications (1)

Publication Number Publication Date
GB911886A true GB911886A (en) 1962-11-28

Family

ID=7221953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4510/61A Expired GB911886A (en) 1960-03-15 1961-02-07 Process for the production of photographic silver halide emulsions

Country Status (4)

Country Link
US (1) US3178294A (en)
BE (1) BE600141A (en)
DE (1) DE1140813B (en)
GB (1) GB911886A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5977190A (en) * 1998-01-14 1999-11-02 Eastman Kodak Company Process for deionizing and concentrating emulsions

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE637343A (en) * 1962-09-13
JPS4924283B1 (en) * 1965-01-12 1974-06-21
DE1241701B (en) * 1965-03-17 1967-06-01 Fotochem Werke Berlin Veb Process for the preparation of photographic flake emulsions
CH460527A (en) * 1965-06-15 1968-07-31 Ciba Geigy Process for preparing photographic silver halide emulsions by the flocculation method
US3437486A (en) * 1966-04-04 1969-04-08 Eastman Kodak Co Monobasically sulfated vinyl copolymers as silver halide stabilizers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2484456A (en) * 1946-03-02 1949-10-11 Eastman Kodak Co Method for preparing photographic emulsions
US2717887A (en) * 1952-12-02 1955-09-13 Du Pont Salts of vinylpyridine polymers with anionic soap-forming sulfuric and sulfonic acids of high molecular weight
US2725381A (en) * 1953-02-02 1955-11-29 Eastman Kodak Co Process of preparing methyl 4-vinylpyridinium p-toluenesulfonate
BE528741A (en) * 1953-05-11
US2837500A (en) * 1953-08-03 1958-06-03 Du Pont Copolymers of acrylonitrile with alkenylaromatic sulfonic acids or salts
BE544350A (en) * 1955-01-17
US3022172A (en) * 1958-05-13 1962-02-20 Fuji Photo Film Co Ltd Process for the production of photographic materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5977190A (en) * 1998-01-14 1999-11-02 Eastman Kodak Company Process for deionizing and concentrating emulsions

Also Published As

Publication number Publication date
BE600141A (en)
US3178294A (en) 1965-04-13
DE1140813B (en) 1962-12-06

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