GB1041085A - Process for the preparation of silver halide emulsions by the flocculation method - Google Patents

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

Info

Publication number
GB1041085A
GB1041085A GB35840/63A GB3584063A GB1041085A GB 1041085 A GB1041085 A GB 1041085A GB 35840/63 A GB35840/63 A GB 35840/63A GB 3584063 A GB3584063 A GB 3584063A GB 1041085 A GB1041085 A GB 1041085A
Authority
GB
United Kingdom
Prior art keywords
formula
preparation
silver halide
compound
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
GB35840/63A
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 GB1041085A publication Critical patent/GB1041085A/en
Expired legal-status Critical Current

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)
  • Colloid Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Plural Heterocyclic Compounds (AREA)

Abstract

A compound of the formula <FORM:1041085/C2/1> wherein <FORM:1041085/C2/2> represents the triazine radical of the formula <FORM:1041085/C2/3> is obtained by reacting cyanuric chloride with the sodium salt of 2-aminonaphthalene-4:8-disulphonic acid in water at 0 DEG to 4 DEG C. and then reacting the resulting condensation product with 4,41-diamino-diphenyl-2: 21-disulphonic acid (in the form of its sodium salt) in water at 40 DEG C. and at pH of 6 to 7. The product may be further condensed at 40 DEG C. with the primary condensation product to form a compound of the formula <FORM:1041085/C2/4> The following compounds may be prepared in a similar manner to the method used for the lastmentioned compound by using 2-methoxy-4:6-dichloro - 1:3:5 - triazine, 3:4:5:6 - tetrachlopyridazine, 2:4:6-trichloropyrimidine and 2:4:5:6-tetrachloropyrimidine, respectively, instead of cyanuric chloride:- <FORM:1041085/C2/5> The compounds are useful as flocculating agents in the preparation of photographic silver halide emulsions.
GB35840/63A 1962-09-13 1963-09-11 Process for the preparation of silver halide emulsions by the flocculation method Expired GB1041085A (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
GB1041085A true GB1041085A (en) 1966-09-01

Family

ID=4367478

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35840/63A Expired GB1041085A (en) 1962-09-13 1963-09-11 Process for the preparation of 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
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
BE600141A (en) * 1960-03-15
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
DE1238330B (en) 1967-04-06
AT239054B (en) 1965-03-10
CH420851A (en) 1966-09-15
US3366482A (en) 1968-01-30
DE1238330C2 (en) 1974-04-18
BE637343A (en)
NL297840A (en)
NL142245B (en) 1974-05-15
ES291610A1 (en) 1964-02-16

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