GB428222A - Improvements in or relating to a process of treating photo-sensitive emulsions - Google Patents

Improvements in or relating to a process of treating photo-sensitive emulsions

Info

Publication number
GB428222A
GB428222A GB2720733A GB2720733A GB428222A GB 428222 A GB428222 A GB 428222A GB 2720733 A GB2720733 A GB 2720733A GB 2720733 A GB2720733 A GB 2720733A GB 428222 A GB428222 A GB 428222A
Authority
GB
United Kingdom
Prior art keywords
iodide
methylmercaptobenzthiazole
acetanilidovinylindolenium
trimethyl
compound
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
GB2720733A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2720733A priority Critical patent/GB428222A/en
Publication of GB428222A publication Critical patent/GB428222A/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

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)
  • Photoreceptors In Electrophotography (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

Dyes contain the system <FORM:0428222/IV/1> as part of a five membered ring, in which the carbon atom in the b -position to the nitrogen atom is connected to another nitrogen atom external to the ring through a chain of one or more carbon atoms forming a completely conjugate system so that the complete characteristic grouping of the compounds concerned may be expressed by the general formula <FORM:0428222/IV/2> in which n is a positive integer, and in which the bracketted part represents the conjugate system. Compounds specified are p-dimethylaminobenzalrhodanine, the product obtained by methylating this compound, p-di-methylaminocinnamalrhodanine, and the condensation products of rhodanic acid with (1) 1-o -acetanilidovinylbenzthiazole ethyl iodide, (2) the compound obtained by methylating this compound, (3) 1-o -acetanilidovinylbenzoxazole ethiodide, (4) 1, 3, 3 - trimethyl - 2 - o - acetanilidovinylindolenium iodide, (5) 1 - methylmercaptobenzthiazole methyliodide, (6) 2 - iodoquinoline methyliodide, (7) N, N<1> - dimethylglutaconic aldehyde dianilide chloride, (8) diphenylformamidine and quinaldine ethiodide; of 2, 4-dihydroxythiazole with (1) p-dimethylaminobenzaldehyde, (2) 1, 3, 3 - trimethyl - 2 o - acetanilidovinylindolenium iodide, (3) 1-methylmercaptobenzthiazole methyl p - toluene sulphonate; of thiohydantoin with (1) 1 - o - acetanilidovinylbenzoxazole ethiodide, (2) 1, 3, 3-trimethyl-2-o -acetanilidovinylindolenium iodide, (3) 1 - methylmercaptobenzthiazole methyl p-toluene sulphonate, (4) N, N<1>-dimethylglutaconic aldehyde dianilide chloride, (5) p - di - methylaminobenzaldehyde respectively; and of N-ethyl-oxindole with p-dimethylaminobenzaldehyde. Specifications 426,718 and 428,359 are referred to.
GB2720733A 1933-10-03 1933-10-03 Improvements in or relating to a process of treating photo-sensitive emulsions Expired GB428222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2720733A GB428222A (en) 1933-10-03 1933-10-03 Improvements in or relating to a process of treating photo-sensitive emulsions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2720733A GB428222A (en) 1933-10-03 1933-10-03 Improvements in or relating to a process of treating photo-sensitive emulsions

Publications (1)

Publication Number Publication Date
GB428222A true GB428222A (en) 1935-05-03

Family

ID=10255904

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2720733A Expired GB428222A (en) 1933-10-03 1933-10-03 Improvements in or relating to a process of treating photo-sensitive emulsions

Country Status (1)

Country Link
GB (1) GB428222A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE754723C (en) * 1935-06-06 1953-03-09 Gevaert Photo Producten Process for sensitizing photographic emulsions
US3121008A (en) * 1959-04-09 1964-02-11 Eastman Kodak Co Photoconductive zinc oxide compositions comprising oxonol, hemioxonol, or benzylidene dyes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE754723C (en) * 1935-06-06 1953-03-09 Gevaert Photo Producten Process for sensitizing photographic emulsions
US3121008A (en) * 1959-04-09 1964-02-11 Eastman Kodak Co Photoconductive zinc oxide compositions comprising oxonol, hemioxonol, or benzylidene dyes

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