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

Similar Documents

Publication Publication Date Title
US2222264A (en) Photographic emulsion
GB1321427A (en) Spectrally sensitized photographic emulsions
GB527296A (en) Improvements in the manufacture of dyes and of photographic emulsions
GB1293862A (en) Supersensitized silver halide photographic emulsion
US3706566A (en) Photographic emulsion containing optically dye-sensitized silver halide grains of less than 0.2 micron
US2313922A (en) Photographic emulsion
US2153928A (en) Sensitized photographic emulsions
GB1402881A (en) Dyes and photographic products containing them
GB527627A (en) Improvements in photographic emulsions and manufacture of dyes therefor
GB1283234A (en) Photographic direct-positive silver halide emulsions
GB470955A (en) Sensitizing of photographic halogen silver emulsions
US2080050A (en) Sensitization of photographic emulsions
US2316268A (en) Photographic emulsion
US3567456A (en) Photographic direct-reversal emulsions
US2226158A (en) Photographic emulsion
US3770449A (en) Spectrally sensitized silver halide photographic emulsion
GB480778A (en) Improvements relating to colour photography
GB515372A (en) Improvements in processes of sensitizing silver halide emulsions
US2295276A (en) Photographic emulsion
GB1447660A (en) Method of developing sensitized colour photographic silver halid material
US2694638A (en) Supersensitization of carbocyanine dyes with hemicyanine bases
GB1218019A (en) Spectrally sensitised photographic silver halide material
GB523012A (en) Improvements in sensitizing photographic emulsions and manufacture of dyes therefor
US3617294A (en) Spectrally sensitized silver halide photographic emulsion
GB504821A (en) Improvements in and relating to cyanine dyes and sensitization of photographic emulsions