GB721203A - Process for sensitizing and supersensitizing photographic emulsions - Google Patents

Process for sensitizing and supersensitizing photographic emulsions

Info

Publication number
GB721203A
GB721203A GB12298/51A GB1229851A GB721203A GB 721203 A GB721203 A GB 721203A GB 12298/51 A GB12298/51 A GB 12298/51A GB 1229851 A GB1229851 A GB 1229851A GB 721203 A GB721203 A GB 721203A
Authority
GB
United Kingdom
Prior art keywords
ethyl
ethylrhodanine
prepared
ethoxyethylidene
keto
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
GB12298/51A
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.)
Gevaert Photo Producten NV
Original Assignee
Gevaert Photo Producten NV
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 Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Publication of GB721203A publication Critical patent/GB721203A/en
Expired 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
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/10—Organic substances
    • G03C1/12—Methine and polymethine dyes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/10—The polymethine chain containing an even number of >CH- groups
    • C09B23/105—The polymethine chain containing an even number of >CH- groups two >CH- groups
    • 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
    • G03C1/28—Sensitivity-increasing substances together with supersensitising substances
    • G03C1/29—Sensitivity-increasing substances together with supersensitising substances the supersensitising mixture being solely composed of dyes ; Combination of dyes, even if the supersensitising effect is not explicitly disclosed

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Thiazole And Isothizaole Compounds (AREA)
GB12298/51A 1950-05-25 1951-05-25 Process for sensitizing and supersensitizing photographic emulsions Expired GB721203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1018590T 1950-05-25

Publications (1)

Publication Number Publication Date
GB721203A true GB721203A (en) 1955-01-05

Family

ID=9575120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12298/51A Expired GB721203A (en) 1950-05-25 1951-05-25 Process for sensitizing and supersensitizing photographic emulsions

Country Status (5)

Country Link
CH (1) CH292828A (enrdf_load_stackoverflow)
DE (1) DE857886C (enrdf_load_stackoverflow)
FR (1) FR1018590A (enrdf_load_stackoverflow)
GB (1) GB721203A (enrdf_load_stackoverflow)
NL (1) NL78223C (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE571507A (enrdf_load_stackoverflow) * 1957-09-30
US3507649A (en) * 1967-01-31 1970-04-21 Lee C Hensley Sensitized photoconductive zinc oxide

Also Published As

Publication number Publication date
NL78223C (enrdf_load_stackoverflow)
DE857886C (de) 1952-10-09
CH292828A (fr) 1953-08-31
FR1018590A (fr) 1953-01-09

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