GB483459A - Improvements in photographic sensitive emulsions - Google Patents

Improvements in photographic sensitive emulsions

Info

Publication number
GB483459A
GB483459A GB2813737A GB2813737A GB483459A GB 483459 A GB483459 A GB 483459A GB 2813737 A GB2813737 A GB 2813737A GB 2813737 A GB2813737 A GB 2813737A GB 483459 A GB483459 A GB 483459A
Authority
GB
United Kingdom
Prior art keywords
photographic sensitive
sensitive emulsions
methylbenzoxazole
prepared
ethiodide
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
GB2813737A
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.)
Eastman Kodak Co
Original Assignee
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to GB2813737A priority Critical patent/GB483459A/en
Publication of GB483459A publication Critical patent/GB483459A/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

Abstract

2 : 21-Diethyl-8-methyloxathiacarbocyanine iodide is prepared by the condensation of 1-acetylmethylene-2-ethylbenzthiazoline with 1-methylbenzoxazole ethiodide in acetic anhydride. 1-Methylbenzoxazole ethiodide is prepared by heating 1-methylbenzoxazole with 25 per cent excess of ethyl iodide for five to seven days at 100 DEG C. Specifications 412,309, 466,097, and 466,246 are referred to.
GB2813737A 1936-09-15 1936-09-15 Improvements in photographic sensitive emulsions Expired GB483459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2813737A GB483459A (en) 1936-09-15 1936-09-15 Improvements in photographic sensitive emulsions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2813737A GB483459A (en) 1936-09-15 1936-09-15 Improvements in photographic sensitive emulsions

Publications (1)

Publication Number Publication Date
GB483459A true GB483459A (en) 1938-04-20

Family

ID=10270832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2813737A Expired GB483459A (en) 1936-09-15 1936-09-15 Improvements in photographic sensitive emulsions

Country Status (1)

Country Link
GB (1) GB483459A (en)

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