BE840994A - Nouvelles compositions photochromes stabilisees et procedes de mise en oeuvre de ces compositions - Google Patents

Nouvelles compositions photochromes stabilisees et procedes de mise en oeuvre de ces compositions

Info

Publication number
BE840994A
BE840994A BE166358A BE166358A BE840994A BE 840994 A BE840994 A BE 840994A BE 166358 A BE166358 A BE 166358A BE 166358 A BE166358 A BE 166358A BE 840994 A BE840994 A BE 840994A
Authority
BE
Belgium
Prior art keywords
compositions
photochrome
new
processing methods
stabilized
Prior art date
Application number
BE166358A
Other languages
English (en)
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 filed Critical
Publication of BE840994A publication Critical patent/BE840994A/fr

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
    • G03C1/00—Photosensitive materials
    • G03C1/685—Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
BE166358A 1975-04-24 1976-04-22 Nouvelles compositions photochromes stabilisees et procedes de mise en oeuvre de ces compositions BE840994A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7512750A FR2308951A1 (fr) 1975-04-24 1975-04-24 Nouvelles compositions photochromes stabilisees et procedes de mise en oeuvre de ces compositions

Publications (1)

Publication Number Publication Date
BE840994A true BE840994A (fr) 1976-10-22

Family

ID=9154414

Family Applications (1)

Application Number Title Priority Date Filing Date
BE166358A BE840994A (fr) 1975-04-24 1976-04-22 Nouvelles compositions photochromes stabilisees et procedes de mise en oeuvre de ces compositions

Country Status (2)

Country Link
BE (1) BE840994A (fr)
FR (1) FR2308951A1 (fr)

Also Published As

Publication number Publication date
FR2308951B1 (fr) 1983-03-11
FR2308951A1 (fr) 1976-11-19

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: LA CELLOPHANE

Effective date: 19870430