GB485609A - Improvements in photographic sensitive emulsions - Google Patents

Improvements in photographic sensitive emulsions

Info

Publication number
GB485609A
GB485609A GB2813837A GB2813837A GB485609A GB 485609 A GB485609 A GB 485609A GB 2813837 A GB2813837 A GB 2813837A GB 2813837 A GB2813837 A GB 2813837A GB 485609 A GB485609 A GB 485609A
Authority
GB
United Kingdom
Prior art keywords
methyl
methylthiazoline
ethyl
iodide
toluenesulphonate
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
GB2813837A
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 GB2813837A priority Critical patent/GB485609A/en
Publication of GB485609A publication Critical patent/GB485609A/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)
  • Thiazole And Isothizaole Compounds (AREA)

Abstract

2 : 31 - Dimethyl - 8 - ethylthiathiazolino-carbocyanine iodide is prepared by condensation of 2 - methyl - 1 - propionylmethylenebenzthiazoline with 2-methylthiazoline methyl-p-toluenesulphonate, followed by conversion to the iodide. Similar condensations using (1) 1 - acetylmethylene - 2 - ethylbenzselenazoline and 2 - methylthiazoline ethyl p-toluenesulphonate, (2) 2 - acetylmethylene-1-ethyl - b - naphthathiazoline and 2 - methylthiazoline ethyl p-toluenesulphonate, (3) 1-methyl - 2 - propionyl - methylene - b - naphthathiazoline and 2 - methylthiazoline methyl p-toluenesulphonate, and (4) 1-acetylmethylene-4 - chloro - 2 - ethylbenzthiazoline and 2-methylthiazoline methyl p-toluenesulphonate, followed in each case by conversion to the corresponding iodide, give (1) 2 : 31-diethyl-8 - methylselenathiazolino - carbocyanine iodide, (2) 2 : 31 - diethyl - 8 - methyl - 3 : 4-benzthiathiazolinocarbocyanine iodide, (3) 2 : 31 - diethyl - 8 - methyl - 3 : 4 - benzthiathiazolinocarbocyanine iodide, and (4) 4-chloro-2 - ethyl - 21 : 8 - dimethylthiathiazolinocarbocyanine iodide. Propionic and acetic anhydrides are used as condensing agents. 1 - Acetylmethylene - 4 - chloro - 2 - ethylbenzthiazoline is prepared by the reaction of 4 - chloro - 1 - methylbenzthiazoline ethyl p-toluene-sulphonate with acetylchloride. 2 - Methylthiazoline methyl- and ethyl-p-toluenesulphonates are prepared by heating 2-methylthiazoline with methyl- or ethyl-p-toluenesulphonate. Specifications 412,309, 466,097, and 466,246 are referred to.
GB2813837A 1936-09-15 1936-09-15 Improvements in photographic sensitive emulsions Expired GB485609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2813837A GB485609A (en) 1936-09-15 1936-09-15 Improvements in photographic sensitive emulsions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2813837A GB485609A (en) 1936-09-15 1936-09-15 Improvements in photographic sensitive emulsions

Publications (1)

Publication Number Publication Date
GB485609A true GB485609A (en) 1938-05-16

Family

ID=10270848

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2813837A Expired GB485609A (en) 1936-09-15 1936-09-15 Improvements in photographic sensitive emulsions

Country Status (1)

Country Link
GB (1) GB485609A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189456A (en) * 1961-06-19 1965-06-15 Du Pont Radiation-sensitive emulsions and elements and their preparation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189456A (en) * 1961-06-19 1965-06-15 Du Pont Radiation-sensitive emulsions and elements and their preparation

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