FR2169743A1 - Developer preservatives - quaternary ammonium sulphite cpds not giving side reactions eg with hardeners,nor making concentra - Google Patents

Developer preservatives - quaternary ammonium sulphite cpds not giving side reactions eg with hardeners,nor making concentra

Info

Publication number
FR2169743A1
FR2169743A1 FR7203131A FR7203131A FR2169743A1 FR 2169743 A1 FR2169743 A1 FR 2169743A1 FR 7203131 A FR7203131 A FR 7203131A FR 7203131 A FR7203131 A FR 7203131A FR 2169743 A1 FR2169743 A1 FR 2169743A1
Authority
FR
France
Prior art keywords
cpds
quaternary ammonium
concentra
hardeners
preservatives
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.)
Granted
Application number
FR7203131A
Other languages
English (en)
French (fr)
Other versions
FR2169743B1 (enExample
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.)
Philip A Hunt Chemical Corp
Original Assignee
Philip A Hunt Chemical Corp
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 Philip A Hunt Chemical Corp filed Critical Philip A Hunt Chemical Corp
Priority to FR7203131A priority Critical patent/FR2169743A1/fr
Publication of FR2169743A1 publication Critical patent/FR2169743A1/fr
Application granted granted Critical
Publication of FR2169743B1 publication Critical patent/FR2169743B1/fr
Granted 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
    • G03C5/305—Additives other than developers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
FR7203131A 1972-01-31 1972-01-31 Developer preservatives - quaternary ammonium sulphite cpds not giving side reactions eg with hardeners,nor making concentra Granted FR2169743A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7203131A FR2169743A1 (en) 1972-01-31 1972-01-31 Developer preservatives - quaternary ammonium sulphite cpds not giving side reactions eg with hardeners,nor making concentra

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7203131A FR2169743A1 (en) 1972-01-31 1972-01-31 Developer preservatives - quaternary ammonium sulphite cpds not giving side reactions eg with hardeners,nor making concentra

Publications (2)

Publication Number Publication Date
FR2169743A1 true FR2169743A1 (en) 1973-09-14
FR2169743B1 FR2169743B1 (enExample) 1977-04-01

Family

ID=9092715

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7203131A Granted FR2169743A1 (en) 1972-01-31 1972-01-31 Developer preservatives - quaternary ammonium sulphite cpds not giving side reactions eg with hardeners,nor making concentra

Country Status (1)

Country Link
FR (1) FR2169743A1 (enExample)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
FR2169743B1 (enExample) 1977-04-01

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Legal Events

Date Code Title Description
ST Notification of lapse