CA1069746A - Derive d'acide plicatique pour la conservation du revelateur agx - Google Patents

Derive d'acide plicatique pour la conservation du revelateur agx

Info

Publication number
CA1069746A
CA1069746A CA231,546A CA231546A CA1069746A CA 1069746 A CA1069746 A CA 1069746A CA 231546 A CA231546 A CA 231546A CA 1069746 A CA1069746 A CA 1069746A
Authority
CA
Canada
Prior art keywords
solution
plicatic acid
plicatic
plicatate
acid compound
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
CA231,546A
Other languages
English (en)
Other versions
CA231546S (fr
Inventor
Arthur Karchmar
Leo L. Nejelski (Jr.)
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.)
ITT Inc
Original Assignee
ITT Industries Inc
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 ITT Industries Inc filed Critical ITT Industries Inc
Application granted granted Critical
Publication of CA1069746A publication Critical patent/CA1069746A/fr
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
    • G03C5/00Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29Development processes or agents therefor
    • G03C5/305Additives other than developers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
CA231,546A 1974-07-22 1975-07-15 Derive d'acide plicatique pour la conservation du revelateur agx Expired CA1069746A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US490361A US3928042A (en) 1974-07-22 1974-07-22 Preservatives for photographic developers

Publications (1)

Publication Number Publication Date
CA1069746A true CA1069746A (fr) 1980-01-15

Family

ID=23947719

Family Applications (1)

Application Number Title Priority Date Filing Date
CA231,546A Expired CA1069746A (fr) 1974-07-22 1975-07-15 Derive d'acide plicatique pour la conservation du revelateur agx

Country Status (2)

Country Link
US (1) US3928042A (fr)
CA (1) CA1069746A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014699A (en) * 1973-05-17 1977-03-29 Ciba-Geigy Ag Preparation for the processing of photographic materials
US5863713A (en) * 1997-04-07 1999-01-26 Aviles; John Jay Process repeatedly regenerates developers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515556A (en) * 1967-08-01 1970-06-02 Eastman Kodak Co Photographic developing process utilizing hemlock tannin polymer
US3716574A (en) * 1967-12-01 1973-02-13 Rayonier Inc Pure crystalline plicatic acid tetrahydrate and the methyl ester thereof
US3644481A (en) * 1968-03-06 1972-02-22 Itt Rayonier Inc Plicatic acid esters
US3754937A (en) * 1972-08-13 1973-08-28 Rayonier Inc Plicatic acid esters
US3810941A (en) * 1972-12-18 1974-05-14 Itt Plicatamides

Also Published As

Publication number Publication date
US3928042A (en) 1975-12-23

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Legal Events

Date Code Title Description
MKEX Expiry