GB1006138A - A process for developing silver halide emulsions - Google Patents

A process for developing silver halide emulsions

Info

Publication number
GB1006138A
GB1006138A GB1679063A GB1679063A GB1006138A GB 1006138 A GB1006138 A GB 1006138A GB 1679063 A GB1679063 A GB 1679063A GB 1679063 A GB1679063 A GB 1679063A GB 1006138 A GB1006138 A GB 1006138A
Authority
GB
United Kingdom
Prior art keywords
piperidine
hydrazine
reacting
silver halide
halide emulsions
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
GB1679063A
Inventor
Werner Walther
Heinz Brandenburger
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.)
Filmfabrik Wolfen VEB
Original Assignee
Filmfabrik Wolfen VEB
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 Filmfabrik Wolfen VEB filed Critical Filmfabrik Wolfen VEB
Priority to GB1679063A priority Critical patent/GB1006138A/en
Publication of GB1006138A publication Critical patent/GB1006138A/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
    • 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
    • G03C5/3014—Hydrazine; Hydroxylamine; Urea; Derivatives thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Abstract

Hydrazines of formula <FORM:1006138/C2/1> wherein R and R1 are hydrogen or alkyl, or together complete a heterocyclic ring, m is 1 or 2 and n is 0 or 1 are prepared by reacting (i) epoxyalkylamines with hydrazine or (ii) halogeno-alkylamines with hydrazine. N - (b - hydroxy - g - hydrazinopropyl) piperidine is prepared by reacting epichlorhydrin with piperidine to give N-(b ,g -epoxypropyl)-piperidine which is reacted with hydrazine. N - (b - hydrazinoethyl)-piperidine is prepared by reacting piperidine with ethylene chlorohydrin and then reacting the product with thionyl chloride and then with hydrazine.
GB1679063A 1963-04-29 1963-04-29 A process for developing silver halide emulsions Expired GB1006138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1679063A GB1006138A (en) 1963-04-29 1963-04-29 A process for developing silver halide emulsions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1679063A GB1006138A (en) 1963-04-29 1963-04-29 A process for developing silver halide emulsions

Publications (1)

Publication Number Publication Date
GB1006138A true GB1006138A (en) 1965-09-29

Family

ID=10083708

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1679063A Expired GB1006138A (en) 1963-04-29 1963-04-29 A process for developing silver halide emulsions

Country Status (1)

Country Link
GB (1) GB1006138A (en)

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