GB814375A - Optically sensitised silver halide emulsions - Google Patents

Optically sensitised silver halide emulsions

Info

Publication number
GB814375A
GB814375A GB16114/56A GB1611456A GB814375A GB 814375 A GB814375 A GB 814375A GB 16114/56 A GB16114/56 A GB 16114/56A GB 1611456 A GB1611456 A GB 1611456A GB 814375 A GB814375 A GB 814375A
Authority
GB
United Kingdom
Prior art keywords
dimethyl sulphate
thiopyrrolidone
reacted
ethyl
prepared
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
GB16114/56A
Other languages
English (en)
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.)
Agfa Gevaert NV
Original Assignee
Agfa 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 Agfa AG filed Critical Agfa AG
Publication of GB814375A publication Critical patent/GB814375A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/005Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08Sensitivity-increasing substances
    • G03C1/10Organic substances
    • G03C1/12Methine and polymethine dyes
    • G03C1/22Methine and polymethine dyes with an even number of CH groups
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/10The polymethine chain containing an even number of >CH- groups
    • C09B23/102The polymethine chain containing an even number of >CH- groups two heterocyclic rings linked carbon-to-carbon
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/494Silver salt compositions other than silver halide emulsions; Photothermographic systems ; Thermographic systems using noble metal compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
GB16114/56A 1955-05-25 1956-05-24 Optically sensitised silver halide emulsions Expired GB814375A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA22746A DE1009020B (de) 1955-05-25 1955-05-25 Verfahren zur Sensibilisierung von Halogensilberemulsionen

Publications (1)

Publication Number Publication Date
GB814375A true GB814375A (en) 1959-06-03

Family

ID=6925261

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16114/56A Expired GB814375A (en) 1955-05-25 1956-05-24 Optically sensitised silver halide emulsions

Country Status (6)

Country Link
US (1) US2944896A (enExample)
BE (1) BE548014A (enExample)
CH (1) CH348872A (enExample)
DE (1) DE1009020B (enExample)
FR (1) FR1153538A (enExample)
GB (1) GB814375A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3923524A (en) * 1973-10-29 1975-12-02 Eastman Kodak Co Fogged direct positive silver halide emulsions containing photographic sensitizing dyes derived from substituted salicylaldehydes
US4156611A (en) * 1974-01-22 1979-05-29 Fuji Photo Film Co., Ltd. Heat-developable photosensitive materials
US3976493A (en) * 1975-02-18 1976-08-24 Polaroid Corporation Photosensitive compositions containing linked spectral sensitizers
JPS5364514A (en) * 1976-11-22 1978-06-09 Konishiroku Photo Ind Co Ltd Silver halide photographic material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2166736A (en) * 1937-04-23 1939-07-18 Eastman Kodak Co Photographic emulsion
GB496520A (en) * 1937-04-26 1938-11-28 Kodak Ltd Manufacture of dyes, and their use in modifying the properties of photographic emulsions
GB534140A (en) * 1939-05-25 1941-02-28 Kodak Ltd Improvements in and relating to photographic emulsions and layers, and the manufacture of dyes for use therein and intermediates for such manufacture
DE927043C (de) * 1943-04-14 1955-04-28 Agfa Ag Fuer Photofabrikation Verfahren zur Herstellung von Methinfarbstoffen

Also Published As

Publication number Publication date
CH348872A (de) 1960-09-15
DE1009020B (de) 1957-05-23
US2944896A (en) 1960-07-12
BE548014A (enExample)
FR1153538A (fr) 1958-03-12

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