AT239054B - Process for preparing photographic silver halide emulsions by the flocculation method - Google Patents

Process for preparing photographic silver halide emulsions by the flocculation method

Info

Publication number
AT239054B
AT239054B AT733763A AT733763A AT239054B AT 239054 B AT239054 B AT 239054B AT 733763 A AT733763 A AT 733763A AT 733763 A AT733763 A AT 733763A AT 239054 B AT239054 B AT 239054B
Authority
AT
Austria
Prior art keywords
silver halide
halide emulsions
photographic silver
flocculation method
preparing photographic
Prior art date
Application number
AT733763A
Other languages
German (de)
Original Assignee
Ciba Geigy
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 Geigy filed Critical Ciba Geigy
Application granted granted Critical
Publication of AT239054B publication Critical patent/AT239054B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
    • C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
    • C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
    • C07D239/48—Two nitrogen atoms
    • 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)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Colloid Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Plural Heterocyclic Compounds (AREA)
AT733763A 1962-09-13 1963-09-12 Process for preparing photographic silver halide emulsions by the flocculation method AT239054B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1085062A CH420851A (en) 1962-09-13 1962-09-13 Process for preparing photographic silver halide emulsions by the flocculation method

Publications (1)

Publication Number Publication Date
AT239054B true AT239054B (en) 1965-03-10

Family

ID=4367478

Family Applications (1)

Application Number Title Priority Date Filing Date
AT733763A AT239054B (en) 1962-09-13 1963-09-12 Process for preparing photographic silver halide emulsions by the flocculation method

Country Status (8)

Country Link
US (1) US3366482A (en)
AT (1) AT239054B (en)
BE (1) BE637343A (en)
CH (1) CH420851A (en)
DE (1) DE1238330C2 (en)
ES (1) ES291610A1 (en)
GB (1) GB1041085A (en)
NL (2) NL142245B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522053A (en) * 1965-02-06 1970-07-28 Fuji Photo Film Co Ltd Process for the preparation of photographic emulsions
CH460527A (en) * 1965-06-15 1968-07-31 Ciba Geigy Process for preparing photographic silver halide emulsions by the flocculation method
CH467475A (en) * 1966-06-28 1969-01-15 Ciba Geigy Process for making enriched colloidal silver

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE484325A (en) * 1947-08-13
BE600141A (en) * 1960-03-15
FR1279110A (en) * 1960-03-15 1961-12-15 Koepff & Sohne G M B H Process for preparing emulsions of silver halides, in particular for photography and emulsions in accordance with those obtained
US3138461A (en) * 1960-06-10 1964-06-23 Polaroid Corp Process for preparing silver halide emulsions containing gelatin derivatives
US3288775A (en) * 1961-04-07 1966-11-29 Ciba Ltd Method of hardening gelatin by reacting with conjugated heterocyclic compounds containing halogen atoms and water-solubilizing acid groups

Also Published As

Publication number Publication date
BE637343A (en)
ES291610A1 (en) 1964-02-16
US3366482A (en) 1968-01-30
GB1041085A (en) 1966-09-01
DE1238330B (en) 1967-04-06
NL142245B (en) 1974-05-15
DE1238330C2 (en) 1974-04-18
NL297840A (en)
CH420851A (en) 1966-09-15

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