FR2138346A1 - Sensitizers for photographic emulsions-by reaction of silver salts wi - andsilver complexing agents - Google Patents

Sensitizers for photographic emulsions-by reaction of silver salts wi - andsilver complexing agents

Info

Publication number
FR2138346A1
FR2138346A1 FR7118655A FR7118655A FR2138346A1 FR 2138346 A1 FR2138346 A1 FR 2138346A1 FR 7118655 A FR7118655 A FR 7118655A FR 7118655 A FR7118655 A FR 7118655A FR 2138346 A1 FR2138346 A1 FR 2138346A1
Authority
FR
France
Prior art keywords
sensitizers
pref
photographic emulsions
andsilver
reaction
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.)
Withdrawn
Application number
FR7118655A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7118655A priority Critical patent/FR2138346A1/en
Publication of FR2138346A1 publication Critical patent/FR2138346A1/en
Withdrawn legal-status Critical Current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
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
    • G03C1/346—Organic derivatives of bivalent sulfur, selenium or tellurium
    • 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
    • G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances
    • 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
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/09—Noble metals or mercury; Salts or compounds thereof; Sulfur, selenium or tellurium, or compounds thereof, e.g. for chemical sensitising
    • 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
    • G03C1/49—Print-out and photodevelopable emulsions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Sensitizers for photographic emulsions contains, as recurring units, groups, identical or different, of formula -Ag-S-R, in which R is an organic radical 1 to 6 C atoms, pref. 2 to 4, substituted by one or more hydrophilic groups chosen so that the sum of charges of the polymer are 0 or, pref. positive and esp. organic radicals substituted by -NH2-, -OH, quanidino- and/or carboxy groups, particularly 2-aminoethyl. The sensitizers are made by reacting a water soln. of a silver salt with, pref. a slight excess of a water soln. of a mercaptan of formula RSH, in the presence of a cpd. pref. NH4OH or tris-hydroxy-methyl-amino methane, capable of forming a complex with silver.
FR7118655A 1971-05-24 1971-05-24 Sensitizers for photographic emulsions-by reaction of silver salts wi - andsilver complexing agents Withdrawn FR2138346A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7118655A FR2138346A1 (en) 1971-05-24 1971-05-24 Sensitizers for photographic emulsions-by reaction of silver salts wi - andsilver complexing agents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7118655A FR2138346A1 (en) 1971-05-24 1971-05-24 Sensitizers for photographic emulsions-by reaction of silver salts wi - andsilver complexing agents

Publications (1)

Publication Number Publication Date
FR2138346A1 true FR2138346A1 (en) 1973-01-05

Family

ID=9077502

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7118655A Withdrawn FR2138346A1 (en) 1971-05-24 1971-05-24 Sensitizers for photographic emulsions-by reaction of silver salts wi - andsilver complexing agents

Country Status (1)

Country Link
FR (1) FR2138346A1 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse