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GB482952A - Process for sensitising photographic silver halide emulsions - Google Patents

Process for sensitising photographic silver halide emulsions

Info

Publication number
GB482952A
GB482952A GB27238/36A GB2723836A GB482952A GB 482952 A GB482952 A GB 482952A GB 27238/36 A GB27238/36 A GB 27238/36A GB 2723836 A GB2723836 A GB 2723836A GB 482952 A GB482952 A GB 482952A
Authority
GB
United Kingdom
Prior art keywords
sensitising
silver halide
halide emulsions
photographic silver
phenylenediamine
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
GB27238/36A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB482952A publication Critical patent/GB482952A/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
    • G03C1/122—Azacyanines

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)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

Dyes are produced by condensing 1 : 3 : 3-trimethylindoline - 2 - methylene - w - aldehyde with (1) o-phenylenediamine, (2) p : p1-diaminodiphenylmethane sulphone, (3) p : p1-diaminostilbene, and (4) 3 : 31-dimethoxy-4 : 41-diaminodiphenylmethane. Dyes are also produced by condensing (a) 1-ethyl-1 : 2-dihydroquinoline-2-methylene - w - aldehyde with p-phenylenediamine, (b) 1-methyl-benzthiazoline-2-methylene-w-aldehyde with p-phenylenediamine, and (c) 1-methylbenzselenazoline-2-methylene - w - aldehyde with p-phenylenediamine. Specification 462,238 is referred to.
GB27238/36A 1935-10-24 1936-10-07 Process for sensitising photographic silver halide emulsions Expired GB482952A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE482952X 1935-10-24

Publications (1)

Publication Number Publication Date
GB482952A true GB482952A (en) 1938-04-07

Family

ID=6542903

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27238/36A Expired GB482952A (en) 1935-10-24 1936-10-07 Process for sensitising photographic silver halide emulsions

Country Status (4)

Country Link
BE (1) BE417994A (en)
DE (1) DE701882C (en)
FR (1) FR811990A (en)
GB (1) GB482952A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR963261A (en) * 1947-03-14 1950-07-05

Also Published As

Publication number Publication date
DE701882C (en)
BE417994A (en)
FR811990A (en) 1937-04-27

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