GB605941A - Improvements relating to photographic emulsions - Google Patents

Improvements relating to photographic emulsions

Info

Publication number
GB605941A
GB605941A GB512745A GB512745A GB605941A GB 605941 A GB605941 A GB 605941A GB 512745 A GB512745 A GB 512745A GB 512745 A GB512745 A GB 512745A GB 605941 A GB605941 A GB 605941A
Authority
GB
United Kingdom
Prior art keywords
prepared
phenetidine
thioacetyl
naphthylamine
toluidine
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
GB512745A
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.)
BURT HARING CARROLL
Eastman Kodak Co
Original Assignee
BURT HARING CARROLL
Eastman Kodak Co
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 BURT HARING CARROLL, Eastman Kodak Co filed Critical BURT HARING CARROLL
Priority to GB512745A priority Critical patent/GB605941A/en
Priority to FR944061D priority patent/FR944061A/en
Publication of GB605941A publication Critical patent/GB605941A/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
    • G03C1/28—Sensitivity-increasing substances together with supersensitising substances

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

2 : 4 - Dimethylbenzthiazole is prepared by oxidizing thioacetyl-o-toluidine with alkaline potassium ferricyanide. 2-Methyl-4-ethoxybenzthiazole and 2-ethyl-b -naphthathiazole are prepared similarly from thioacetyl-o-phenetidine and thiopropionyl - a - naphthylamine respectively. Thioacetyl-o-toluidine is prepared by heating acetyl-o-toluidine with P2S5 in dry benzene. Thioacetyl-o-phenetidine and thiopropionyl-a -naphthylamine are similarly prepared. Acetyl-o-phenetidine is prepared by acetylating o-phenetidine with acetic anhydride. Propionyl-a -naphthylamine is prepared by refluxing together a -naphthylamine and propionic acid.
GB512745A 1945-03-01 1945-03-01 Improvements relating to photographic emulsions Expired GB605941A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB512745A GB605941A (en) 1945-03-01 1945-03-01 Improvements relating to photographic emulsions
FR944061D FR944061A (en) 1945-03-01 1946-08-22 Improvements to photographic emulsions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB512745A GB605941A (en) 1945-03-01 1945-03-01 Improvements relating to photographic emulsions

Publications (1)

Publication Number Publication Date
GB605941A true GB605941A (en) 1948-08-04

Family

ID=9790216

Family Applications (1)

Application Number Title Priority Date Filing Date
GB512745A Expired GB605941A (en) 1945-03-01 1945-03-01 Improvements relating to photographic emulsions

Country Status (2)

Country Link
FR (1) FR944061A (en)
GB (1) GB605941A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6341853A (en) * 1986-08-07 1988-02-23 Fuji Photo Film Co Ltd Silver halide color photographic sensitive material

Also Published As

Publication number Publication date
FR944061A (en) 1949-03-25

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