GB812673A - Improvements in or relating to photographic material - Google Patents

Improvements in or relating to photographic material

Info

Publication number
GB812673A
GB812673A GB2362557A GB2362557A GB812673A GB 812673 A GB812673 A GB 812673A GB 2362557 A GB2362557 A GB 2362557A GB 2362557 A GB2362557 A GB 2362557A GB 812673 A GB812673 A GB 812673A
Authority
GB
United Kingdom
Prior art keywords
pyrocatechol
prepared
carbonate
pyrogallol
refluxing
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
GB2362557A
Other languages
English (en)
Inventor
Jozef Frans Willems
Albert Emiel Van Hoof
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 GB812673A publication Critical patent/GB812673A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/005Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/42Developers or their precursors

Landscapes

  • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB2362557A 1956-07-25 1957-07-25 Improvements in or relating to photographic material Expired GB812673A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG20171A DE1025264B (de) 1956-07-25 1956-07-25 Verfahren zur Herstellung eines entwicklerhaltigen photographischen Materials

Publications (1)

Publication Number Publication Date
GB812673A true GB812673A (en) 1959-04-29

Family

ID=7121442

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2362557A Expired GB812673A (en) 1956-07-25 1957-07-25 Improvements in or relating to photographic material

Country Status (5)

Country Link
BE (1) BE559465A (enrdf_load_stackoverflow)
DE (1) DE1025264B (enrdf_load_stackoverflow)
FR (1) FR1179804A (enrdf_load_stackoverflow)
GB (1) GB812673A (enrdf_load_stackoverflow)
NL (1) NL219220A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262781A (en) * 1962-07-05 1966-07-26 Polaroid Corp Photographic products
US3379529A (en) * 1963-02-28 1968-04-23 Eastman Kodak Co Photographic inhibitor-releasing developers
US3457079A (en) * 1964-12-30 1969-07-22 Konishiroku Photo Ind Photographic silver halide emulsions stabilized with gallic acid or an alkyl ester thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295978A (en) * 1962-10-29 1967-01-03 Eastman Kodak Co Light-sensitive photographic elements containing developing agent precursors
DE3528928A1 (de) * 1985-08-13 1987-02-26 Hoechst Ag Polymerisierbare verbindungen und verfahren zu ihrer herstellung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE954391C (de) * 1953-06-05 1956-12-13 Agfa Ag Fuer Photofabrikation Entwicklersubstanzen enthaltende Halogensilberschichten

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262781A (en) * 1962-07-05 1966-07-26 Polaroid Corp Photographic products
US3379529A (en) * 1963-02-28 1968-04-23 Eastman Kodak Co Photographic inhibitor-releasing developers
US3457079A (en) * 1964-12-30 1969-07-22 Konishiroku Photo Ind Photographic silver halide emulsions stabilized with gallic acid or an alkyl ester thereof

Also Published As

Publication number Publication date
DE1025264B (de) 1958-02-27
NL219220A (enrdf_load_stackoverflow)
FR1179804A (fr) 1959-05-28
BE559465A (enrdf_load_stackoverflow)

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