GB928840A - Improvements in or relating to photographic material - Google Patents

Improvements in or relating to photographic material

Info

Publication number
GB928840A
GB928840A GB3334761A GB3334761A GB928840A GB 928840 A GB928840 A GB 928840A GB 3334761 A GB3334761 A GB 3334761A GB 3334761 A GB3334761 A GB 3334761A GB 928840 A GB928840 A GB 928840A
Authority
GB
United Kingdom
Prior art keywords
benzoin
thio
relating
refluxing
specifications
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
GB3334761A
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.)
Gevaert Photo Producten NV
Original Assignee
Gevaert Photo Producten NV
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 Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Publication of GB928840A publication Critical patent/GB928840A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
    • C07D263/02—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings
    • C07D263/30—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D263/34—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D263/46—Sulfur atoms
    • 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
    • G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
    • G03C1/346—Organic derivatives of bivalent sulfur, selenium or tellurium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Coloring (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

Abstract

2-Thio-4,5-diphenyloxazoline is prepared by adding hydrochloric acid to a solution of potassium thiocyanate in ethanol, filtering off the potassium chloride, and refluxing the filtrate with bezoin. Other 2-thio-4,5-disubstituted-oxazolines are prepared by using, instead of benzoin, p-methoxy-benzoin, acetoin or butyroin and refluxing this in solution in a mixture of potassium thiocyanate and concentrated hydrochloric acid. By using a -hydroxy-cyclohexanone in this method instead of benzoin, 2-thio-tetrahydrobenzoxazoline is obtained. Specifications 727,982, 789,823 and Belgium Specifications 493,464, 537,278 and 568,687 are referred to.
GB3334761A 1960-09-23 1961-09-18 Improvements in or relating to photographic material Expired GB928840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2040079 1960-09-23

Publications (1)

Publication Number Publication Date
GB928840A true GB928840A (en) 1963-06-19

Family

ID=3864735

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3334761A Expired GB928840A (en) 1960-09-23 1961-09-18 Improvements in or relating to photographic material

Country Status (3)

Country Link
BE (1) BE595325A (en)
DE (1) DE1166618B (en)
GB (1) GB928840A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2166144A1 (en) * 1971-12-28 1973-08-10 Fuji Photo Film Co Ltd
US5006455A (en) * 1987-11-24 1991-04-09 Agfa-Gevaert Aktiengesellschaft Gradation-variable black-and-white paper

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1203051A (en) * 1967-02-15 1970-08-26 Agfa Gevaert Nv Improvements in or relating to photographic light-sensitive silver halide materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2166144A1 (en) * 1971-12-28 1973-08-10 Fuji Photo Film Co Ltd
US5006455A (en) * 1987-11-24 1991-04-09 Agfa-Gevaert Aktiengesellschaft Gradation-variable black-and-white paper

Also Published As

Publication number Publication date
BE595325A (en)
DE1166618B (en) 1964-03-26

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