US2490745A - Cellulose carboxylic ester silver halide emulsions sensitized with benzothiazole and benzoselenazole quaternary salts - Google Patents

Cellulose carboxylic ester silver halide emulsions sensitized with benzothiazole and benzoselenazole quaternary salts Download PDF

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Publication number
US2490745A
US2490745A US2126A US212648A US2490745A US 2490745 A US2490745 A US 2490745A US 2126 A US2126 A US 2126A US 212648 A US212648 A US 212648A US 2490745 A US2490745 A US 2490745A
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US
United States
Prior art keywords
silver halide
quaternary salts
quaternary
group
carbon atoms
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 - Lifetime
Application number
US2126A
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English (en)
Inventor
Burt H Carroll
West William
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
Priority to BE486662D priority Critical patent/BE486662A/xx
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US2126A priority patent/US2490745A/en
Priority to FR1001730D priority patent/FR1001730A/fr
Priority to GB1021/49A priority patent/GB656942A/en
Application granted granted Critical
Publication of US2490745A publication Critical patent/US2490745A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03C1/09—Noble metals or mercury; Salts or compounds thereof; Sulfur, selenium or tellurium, or compounds thereof, e.g. for chemical sensitising
    • 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
    • G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances

Definitions

  • benzothiazole, benzoselenazole, benzoxazole, napthothiazole, simple thiazole and thiazoline quaternary salts when incorporated in gelatino-silver-halide emulsions for example in a concentration of from 2 to 8 mg. per 100 cc. of emulsion, act as antifoggants for the emulsions.
  • pyridinium and quinolinium quaternary salts act to supersensitize cyanine dyes in photographic silver halide emulsions.

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  • 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)
  • Paper (AREA)
US2126A 1948-01-13 1948-01-13 Cellulose carboxylic ester silver halide emulsions sensitized with benzothiazole and benzoselenazole quaternary salts Expired - Lifetime US2490745A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE486662D BE486662A (de) 1948-01-13
US2126A US2490745A (en) 1948-01-13 1948-01-13 Cellulose carboxylic ester silver halide emulsions sensitized with benzothiazole and benzoselenazole quaternary salts
FR1001730D FR1001730A (fr) 1948-01-13 1949-01-12 émulsions photographiques perfectionnées
GB1021/49A GB656942A (en) 1948-01-13 1949-01-13 Improvements in sensitive photographic emulsions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2126A US2490745A (en) 1948-01-13 1948-01-13 Cellulose carboxylic ester silver halide emulsions sensitized with benzothiazole and benzoselenazole quaternary salts

Publications (1)

Publication Number Publication Date
US2490745A true US2490745A (en) 1949-12-06

Family

ID=21699339

Family Applications (1)

Application Number Title Priority Date Filing Date
US2126A Expired - Lifetime US2490745A (en) 1948-01-13 1948-01-13 Cellulose carboxylic ester silver halide emulsions sensitized with benzothiazole and benzoselenazole quaternary salts

Country Status (4)

Country Link
US (1) US2490745A (de)
BE (1) BE486662A (de)
FR (1) FR1001730A (de)
GB (1) GB656942A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2680686A (en) * 1949-02-01 1954-06-08 Gevaert Photo Producten Sensitized and supersensitized photographic emulsions
US2759821A (en) * 1952-06-04 1956-08-21 Eastman Kodak Co X-ray film
US3042521A (en) * 1957-12-26 1962-07-03 Gen Aniline & Film Corp Antifoggants and stabilizers for photographic silver halide emulsion
FR2198169A1 (de) * 1972-09-04 1974-03-29 Fuji Photo Film Co Ltd
US5389510A (en) * 1993-12-16 1995-02-14 Eastman Kodak Company Photographic elements containing alkynylamine dopants
US5413905A (en) * 1993-12-16 1995-05-09 Eastman Kodak Company Photographic sensitivity increasing alkynylamine compounds and photographic elements

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026201A (en) * 1959-02-02 1962-03-20 Gen Aniline & Film Corp Antifoggants and stabilizers for photographic silver halide emulsions
IT1204319B (it) * 1986-04-28 1989-03-01 Minnesota Mining & Mfg Emulsione agli alogenuri d'argento contenente un sale di n-alchenil-tiazolio 2-non-sostituito come stabilizzatore dell'immagine latente ed elementi fotografici che contengono detta emulsione

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2110491A (en) * 1936-04-16 1938-03-08 Eastman Kodak Co Photographic emulsions
US2131038A (en) * 1932-05-26 1938-09-27 Eastman Kodak Co Photographic emulsion containing alkyl quaternary salts of thiazoles and the like asantifoggants
GB496049A (en) * 1937-04-19 1938-11-21 Ig Farbenindustrie Ag Improved manufacture of light-sensitive photographic preparations
US2271623A (en) * 1939-03-30 1942-02-03 Eastman Kodak Co Photographic emulsion
US2334864A (en) * 1942-02-02 1943-11-23 Eastman Kodak Co Photographic emulsion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2131038A (en) * 1932-05-26 1938-09-27 Eastman Kodak Co Photographic emulsion containing alkyl quaternary salts of thiazoles and the like asantifoggants
US2110491A (en) * 1936-04-16 1938-03-08 Eastman Kodak Co Photographic emulsions
GB496049A (en) * 1937-04-19 1938-11-21 Ig Farbenindustrie Ag Improved manufacture of light-sensitive photographic preparations
US2271623A (en) * 1939-03-30 1942-02-03 Eastman Kodak Co Photographic emulsion
US2334864A (en) * 1942-02-02 1943-11-23 Eastman Kodak Co Photographic emulsion

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2680686A (en) * 1949-02-01 1954-06-08 Gevaert Photo Producten Sensitized and supersensitized photographic emulsions
US2759821A (en) * 1952-06-04 1956-08-21 Eastman Kodak Co X-ray film
US3042521A (en) * 1957-12-26 1962-07-03 Gen Aniline & Film Corp Antifoggants and stabilizers for photographic silver halide emulsion
FR2198169A1 (de) * 1972-09-04 1974-03-29 Fuji Photo Film Co Ltd
US5389510A (en) * 1993-12-16 1995-02-14 Eastman Kodak Company Photographic elements containing alkynylamine dopants
US5413905A (en) * 1993-12-16 1995-05-09 Eastman Kodak Company Photographic sensitivity increasing alkynylamine compounds and photographic elements

Also Published As

Publication number Publication date
BE486662A (de)
GB656942A (en) 1951-09-05
FR1001730A (fr) 1952-02-27

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