GB986205A - Photographic silver halide emulsions of increased sensitivity - Google Patents

Photographic silver halide emulsions of increased sensitivity

Info

Publication number
GB986205A
GB986205A GB20378/62A GB2037862A GB986205A GB 986205 A GB986205 A GB 986205A GB 20378/62 A GB20378/62 A GB 20378/62A GB 2037862 A GB2037862 A GB 2037862A GB 986205 A GB986205 A GB 986205A
Authority
GB
United Kingdom
Prior art keywords
silver halide
increased sensitivity
halide emulsions
photographic silver
diacetyl
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
GB20378/62A
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
Publication of GB986205A publication Critical patent/GB986205A/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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/65—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by splitting-off hydrogen atoms or functional groups; by hydrogenolysis of functional groups
    • C07C45/66—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by splitting-off hydrogen atoms or functional groups; by hydrogenolysis of functional groups by dehydration
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/385—Saturated compounds containing a keto group being part of a ring
    • C07C49/487—Saturated compounds containing a keto group being part of a ring containing hydroxy groups
    • C07C49/497—Saturated compounds containing a keto group being part of a ring containing hydroxy groups a keto group being part of a six-membered ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
    • C07C49/603—Unsaturated compounds containing a keto groups being part of a ring of a six-membered ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

4,6 - Diacetyl - 3 - methyl - 2 - cyclohexenone is prepared by passing hydrogen chloride gas into 4,6 - diacetyl - 3 - hydroxy - 3 - methylcyclohexanone to dehydrate it and then pouring the reaction mixture into sodium carbonate. Specifications 524,154, 524,554, 524,555, 531,246, 531,312, 537,921, 538,914, 541,589, 545,448, 660,012, 680,488, 702,255, 711,488, 791,219, 843,497, 873,198, 874,080 and 886,722 are referred to.
GB20378/62A 1961-05-29 1962-05-28 Photographic silver halide emulsions of increased sensitivity Expired GB986205A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US113065A US3165410A (en) 1961-05-29 1961-05-29 Photographic emulsions containing cyclic ketone sensitizers

Publications (1)

Publication Number Publication Date
GB986205A true GB986205A (en) 1965-03-17

Family

ID=22347432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20378/62A Expired GB986205A (en) 1961-05-29 1962-05-28 Photographic silver halide emulsions of increased sensitivity

Country Status (3)

Country Link
US (1) US3165410A (en)
BE (1) BE618139A (en)
GB (1) GB986205A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6024459B2 (en) * 1980-07-17 1985-06-13 富士写真フイルム株式会社 Silver halide photographic material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE470280A (en) * 1944-10-26
US2887479A (en) * 1955-11-15 1959-05-19 Eastman Kodak Co Heterocyclic quaternary salts containing a cyclohexenylidenemethyl substituent
BE557659A (en) * 1956-05-21

Also Published As

Publication number Publication date
BE618139A (en)
US3165410A (en) 1965-01-12

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