BE751582A - Substances photochromiques perfectionnees - Google Patents

Substances photochromiques perfectionnees

Info

Publication number
BE751582A
BE751582A BE751582DA BE751582A BE 751582 A BE751582 A BE 751582A BE 751582D A BE751582D A BE 751582DA BE 751582 A BE751582 A BE 751582A
Authority
BE
Belgium
Prior art keywords
perfected
photochromic substances
photochromic
substances
perfected photochromic
Prior art date
Application number
Other languages
English (en)
Original Assignee
Saint Gobain
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 Saint Gobain filed Critical Saint Gobain
Publication of BE751582A publication Critical patent/BE751582A/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)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
BE751582D 1969-06-06 1970-06-05 Substances photochromiques perfectionnees BE751582A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6918619A FR2049297A5 (fr) 1969-06-06 1969-06-06

Publications (1)

Publication Number Publication Date
BE751582A true BE751582A (fr) 1970-12-07

Family

ID=9035234

Family Applications (1)

Application Number Title Priority Date Filing Date
BE751582D BE751582A (fr) 1969-06-06 1970-06-05 Substances photochromiques perfectionnees

Country Status (6)

Country Link
BE (1) BE751582A (fr)
DE (1) DE2027581A1 (fr)
FR (1) FR2049297A5 (fr)
GB (1) GB1310918A (fr)
LU (1) LU61071A1 (fr)
NL (1) NL7008081A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9225346D0 (en) * 1992-12-03 1993-01-27 Pilkington Plc Photochromic compounds
GB9225347D0 (en) * 1992-12-03 1993-01-27 Pilkington Plc Photo reactive material
GB9225348D0 (en) * 1992-12-03 1993-01-27 Pilkington Plc Bridged photochromics

Also Published As

Publication number Publication date
NL7008081A (fr) 1970-12-08
GB1310918A (en) 1973-03-21
DE2027581A1 (de) 1971-01-28
LU61071A1 (fr) 1971-07-01
FR2049297A5 (fr) 1971-03-26

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