FR1417573A - Process for the preparation of photographic emulsions based on silver halides by means of flocculation - Google Patents

Process for the preparation of photographic emulsions based on silver halides by means of flocculation

Info

Publication number
FR1417573A
FR1417573A FR998541A FR998541A FR1417573A FR 1417573 A FR1417573 A FR 1417573A FR 998541 A FR998541 A FR 998541A FR 998541 A FR998541 A FR 998541A FR 1417573 A FR1417573 A FR 1417573A
Authority
FR
France
Prior art keywords
flocculation
preparation
silver halides
photographic emulsions
emulsions based
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
FR998541A
Other languages
French (fr)
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.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
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
Priority claimed from CH864A external-priority patent/CH430446A/en
Application filed by Ciba Geigy AG, Ciba AG filed Critical Ciba Geigy AG
Priority to FR998541A priority Critical patent/FR1417573A/en
Application granted granted Critical
Publication of FR1417573A publication Critical patent/FR1417573A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/28—Phosphorus compounds with one or more P—C bonds
    • C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
    • C07F9/40—Esters thereof
    • C07F9/4003—Esters thereof the acid moiety containing a substituent or a structure which is considered as characteristic
    • C07F9/4056—Esters of arylalkanephosphonic acids
    • 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)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
FR998541A 1964-01-03 1964-12-14 Process for the preparation of photographic emulsions based on silver halides by means of flocculation Expired FR1417573A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR998541A FR1417573A (en) 1964-01-03 1964-12-14 Process for the preparation of photographic emulsions based on silver halides by means of flocculation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH864A CH430446A (en) 1964-01-03 1964-01-03 Process for preparing photographic silver halide emulsions by the flocculation method
FR998541A FR1417573A (en) 1964-01-03 1964-12-14 Process for the preparation of photographic emulsions based on silver halides by means of flocculation

Publications (1)

Publication Number Publication Date
FR1417573A true FR1417573A (en) 1965-11-12

Family

ID=25683243

Family Applications (1)

Application Number Title Priority Date Filing Date
FR998541A Expired FR1417573A (en) 1964-01-03 1964-12-14 Process for the preparation of photographic emulsions based on silver halides by means of flocculation

Country Status (1)

Country Link
FR (1) FR1417573A (en)

Similar Documents

Publication Publication Date Title
FR1312796A (en) Process for the preparation of photographic silver halide emulsions
FR1426623A (en) improved silver halide emulsions
BE753434A (en) PROCESS FOR PREPARING A PHOTOGRAPHIC SILVER HALIDE EMULSION
FR1417573A (en) Process for the preparation of photographic emulsions based on silver halides by means of flocculation
CH520347A (en) Process for preparing photographic emulsions
FR1454112A (en) Photographic preparations for the silver discoloration process
FR1378456A (en) stabilized photosensitive silver halide emulsions
FR1419321A (en) Photographic preparations for the silver discoloration process
FR1449357A (en) Photographic articles for the silver discoloration process
CH479088A (en) Process for the preparation of photographic silver halide emulsions
FR1355993A (en) Process for developing photographic silver halide emulsions
FR1450272A (en) Special catalysts for the photographic silver discoloration process
FR1378457A (en) Process for obtaining photographic silver halide emulsions according to the flocculation process
FR1375497A (en) Process for obtaining photographic silver halide emulsions according to the flocculation process
FR1482552A (en) Process for obtaining photographic silver halide emulsions according to the flocculation process
FR1447491A (en) Discoloration catalysts for the photographic silver discoloration process
FR1481715A (en) Process for preparing photographic silver halide emulsions according to the so-called flocculation process
FR1469370A (en) Photographic preparations for the silver discoloration process
FR1464177A (en) Photographic articles for the silver discoloration process
FR1440162A (en) Improvements to photographic emulsions based on silver halides
FR1440537A (en) Process for improving photographic silver halide emulsions
FR1349658A (en) Method for increasing the sensitivity of photographic silver halide emulsions
FR1348827A (en) Method for increasing the sensitivity of photographic silver halide emulsions
FR1474397A (en) photosensitive printing emulsions based on silver halide
BE749316A (en) FIXATORS-DEVELOPERS FOR SILVER HALOGENIDE EMULSIONS