GB470955A - Sensitizing of photographic halogen silver emulsions - Google Patents

Sensitizing of photographic halogen silver emulsions

Info

Publication number
GB470955A
GB470955A GB35270/36A GB3527036A GB470955A GB 470955 A GB470955 A GB 470955A GB 35270/36 A GB35270/36 A GB 35270/36A GB 3527036 A GB3527036 A GB 3527036A GB 470955 A GB470955 A GB 470955A
Authority
GB
United Kingdom
Prior art keywords
diethyl
sensitizing
iodide
photographic
benzothiocarbocyanine
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
GB35270/36A
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 GB470955A publication Critical patent/GB470955A/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
    • G03C1/14—Methine and polymethine dyes with an odd number of CH groups
    • G03C1/18—Methine and polymethine dyes with an odd number of CH groups with three CH groups

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Plural Heterocyclic Compounds (AREA)

Abstract

470,955. Sensitizing photographic emulsions. GEVAERT PHOTO-PRODUCTEN N. V. Dec. 23, 1936, No. 35270. Convention date, Dec. 23, 1935. Drawings to Specification. Sample furnished. [Class 98 (ii)] Photographic silver halide emulsions are sensitized by carbocyanines containing a naphthothiazole nucleus other than a ##<1>-naphthothiazole nucleus and a benzthiazole or benzselenazole nucleus, the two nuclei being linked together by a non-substituted trimethine chain. Carbocyanines specified are 2 : 2<1>-diethyl-5<1> : 6<1>-benzothiocarbocyanine iodide, 2 : 2<1>-diethyl- 3<1>: 4<1>-benzothiocarbocyanine iodide, 2 : 2<1>-diethyl - 3<1> : 4<1> - benzoseleno - thiocarbocyanine iodide, and 2 2<1>-diethyl-5-methoxy-3<1> : 4<1>- benzo-thiocarbocyanine iodide. Sensitizing data are given.
GB35270/36A 1935-12-23 1936-12-23 Sensitizing of photographic halogen silver emulsions Expired GB470955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US470955XA 1935-12-23 1935-12-23

Publications (1)

Publication Number Publication Date
GB470955A true GB470955A (en) 1937-08-25

Family

ID=21947043

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35270/36A Expired GB470955A (en) 1935-12-23 1936-12-23 Sensitizing of photographic halogen silver emulsions

Country Status (3)

Country Link
BE (1) BE419115A (en)
FR (1) FR824723A (en)
GB (1) GB470955A (en)

Also Published As

Publication number Publication date
BE419115A (en)
FR824723A (en) 1938-02-15

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