GB354898A - Improvements in and relating to the manufacture of photographic sensitisers - Google Patents

Improvements in and relating to the manufacture of photographic sensitisers

Info

Publication number
GB354898A
GB354898A GB16911/30A GB1691130A GB354898A GB 354898 A GB354898 A GB 354898A GB 16911/30 A GB16911/30 A GB 16911/30A GB 1691130 A GB1691130 A GB 1691130A GB 354898 A GB354898 A GB 354898A
Authority
GB
United Kingdom
Prior art keywords
photographic
sensitisers
relating
manufacture
oxocarbocyanine
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
GB16911/30A
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.)
ERNEST HARRY RODD
Imperial Chemical Industries Ltd
Original Assignee
ERNEST HARRY RODD
Imperial Chemical Industries Ltd
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 ERNEST HARRY RODD, Imperial Chemical Industries Ltd filed Critical ERNEST HARRY RODD
Priority to GB16911/30A priority Critical patent/GB354898A/en
Priority to US540810A priority patent/US2071898A/en
Priority to DEI41708D priority patent/DE611323C/en
Publication of GB354898A publication Critical patent/GB354898A/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)
  • Indole Compounds (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

Photographic plates and films are sensitized for the red end of the spectrum by bathing them in a solution of an unsymmetrical polymethine dye. Suitable dyes are 1 : 3 : 3-trimethyl-11-ethylind-oxocarbocyanine iodide and 1 : 11-diethylthio-oxocarbocyanine iodide and the dyestuff formed by boiling a solution of 1 : 3 : 3-trimethyl-2-methylene indoline in acetic anhydride with the product of the interaction of quinaldine ethiodide and diphenyl formamidine. Specification 344,409 is referred to.
GB16911/30A 1930-05-31 1930-05-31 Improvements in and relating to the manufacture of photographic sensitisers Expired GB354898A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB16911/30A GB354898A (en) 1930-05-31 1930-05-31 Improvements in and relating to the manufacture of photographic sensitisers
US540810A US2071898A (en) 1930-05-31 1931-05-28 Sensitized photographic silver halide emulsions
DEI41708D DE611323C (en) 1930-05-31 1931-05-31 Process for the preparation of photographic emulsions which are sensitive to long waves of the spectrum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16911/30A GB354898A (en) 1930-05-31 1930-05-31 Improvements in and relating to the manufacture of photographic sensitisers

Publications (1)

Publication Number Publication Date
GB354898A true GB354898A (en) 1931-08-20

Family

ID=10085895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16911/30A Expired GB354898A (en) 1930-05-31 1930-05-31 Improvements in and relating to the manufacture of photographic sensitisers

Country Status (3)

Country Link
US (1) US2071898A (en)
DE (1) DE611323C (en)
GB (1) GB354898A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750122C (en) * 1936-05-29 1944-12-14 Process for sensitizing multilayer photographic material for color photography

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521705A (en) * 1946-08-21 1950-09-12 Du Pont Cyanine dyes
US3099630A (en) * 1955-11-15 1963-07-30 Monsanto Chemicals Water-soluble polymethine salts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750122C (en) * 1936-05-29 1944-12-14 Process for sensitizing multilayer photographic material for color photography

Also Published As

Publication number Publication date
US2071898A (en) 1937-02-23
DE611323C (en) 1935-03-26

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