BE627879A - - Google Patents

Info

Publication number
BE627879A
BE627879A BE627879DA BE627879A BE 627879 A BE627879 A BE 627879A BE 627879D A BE627879D A BE 627879DA BE 627879 A BE627879 A BE 627879A
Authority
BE
Belgium
Application number
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.)
Publication of BE627879A publication Critical patent/BE627879A/xx

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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29—Development processes or agents therefor
    • G03C5/30—Developers
    • G03C5/3028—Heterocyclic compounds
    • G03C5/3035—Heterocyclic compounds containing a diazole ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C07C51/56—Preparation of carboxylic acid anhydrides from organic acids, their salts, their esters or their halides, e.g. by carboxylation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/06—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D231/08—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with oxygen or sulfur atoms directly attached to ring carbon atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Plural Heterocyclic Compounds (AREA)
BE627879D 1963-02-12 BE627879A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2042328 1963-02-12

Publications (1)

Publication Number Publication Date
BE627879A true BE627879A (fr)

Family

ID=3864793

Family Applications (1)

Application Number Title Priority Date Filing Date
BE627879D BE627879A (fr) 1963-02-12

Country Status (5)

Country Link
US (1) US3330839A (fr)
BE (1) BE627879A (fr)
CH (1) CH420171A (fr)
DE (1) DE1241456B (fr)
GB (1) GB1055531A (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE628285A (nl) * 1963-02-12 1963-05-29 Gevaert Photo Prod Nv Bereiding van 3-pyrazolidinonen

Also Published As

Publication number Publication date
GB1055531A (en) 1967-01-18
CH420171A (fr) 1966-09-15
DE1241456B (de) 1967-06-01
US3330839A (en) 1967-07-11

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