GB1103420A - Process for the preparation of photographic silver halide emulsions by the flocculation method - Google Patents

Process for the preparation of photographic silver halide emulsions by the flocculation method

Info

Publication number
GB1103420A
GB1103420A GB2663066A GB2663066A GB1103420A GB 1103420 A GB1103420 A GB 1103420A GB 2663066 A GB2663066 A GB 2663066A GB 2663066 A GB2663066 A GB 2663066A GB 1103420 A GB1103420 A GB 1103420A
Authority
GB
United Kingdom
Prior art keywords
acid
dicarboxylic acid
silver halide
photographic silver
halide emulsions
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
GB2663066A
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.)
BASF Schweiz AG
Original Assignee
Ciba AG
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 Ciba AG filed Critical Ciba AG
Publication of GB1103420A publication Critical patent/GB1103420A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,103,420. Emulsions making. CIBA Ltd. June 15, 1966 [June 15, 1965], No.26630/66. Heading G2C. Photographic silver halide emulsions are made by the flocculation method by employing as flocculating agent a compound of formula: - in which R 1 is an aryl radical containing a sulphonic acid group and . CO. R 2 . CO. represents the diacyl radical of an organic dicarboxylic acid, but not a compound obtained by condensing diamino diphenyl disulphonic acid with a thiophene -2, 5 -dicarboxylic acid dihalide. The dicarboxylic acid R 2 (COOH) 2 may be thiophene-2, 5 dicarboxylic acid, terephthalic acid, furan -2, 5 -dicarboxylic acid, pyridine -2, 5 -dicarboxylic acid, maleic acid, adipic acid and isophthalic acid. The aryl group R 1 may contain amino groups or amido groups.
GB2663066A 1965-06-15 1966-06-15 Process for the preparation of photographic silver halide emulsions by the flocculation method Expired GB1103420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH831265 1965-06-15

Publications (1)

Publication Number Publication Date
GB1103420A true GB1103420A (en) 1968-02-14

Family

ID=4338381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2663066A Expired GB1103420A (en) 1965-06-15 1966-06-15 Process for the preparation of photographic silver halide emulsions by the flocculation method

Country Status (3)

Country Link
BE (1) BE682500A (en)
GB (1) GB1103420A (en)
NL (1) NL6608238A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104262997B (en) * 2014-08-01 2016-05-25 浙江科永化工有限公司 A kind of active fluoro yellow dye and preparation and application
CN104262996B (en) * 2014-08-01 2016-05-25 浙江科永化工有限公司 A kind of active fluoro yellow dye and its preparation method and application

Also Published As

Publication number Publication date
BE682500A (en) 1966-12-14
NL6608238A (en) 1966-08-25

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