NL253898A - - Google Patents

Info

Publication number
NL253898A
NL253898A NL253898DA NL253898A NL 253898 A NL253898 A NL 253898A NL 253898D A NL253898D A NL 253898DA NL 253898 A NL253898 A NL 253898A
Authority
NL
Netherlands
Application number
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.)
Publication of NL253898A publication Critical patent/NL253898A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
    • C07D491/02—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
    • C07D491/10—Spiro-condensed systems
    • 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)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Indole Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Color Printing (AREA)
NL253898D 1959-07-16 NL253898A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82746259A 1959-07-16 1959-07-16
US191431A US3231584A (en) 1959-07-16 1962-05-01 1-phenyl-3, 3-dimethylspiro[(2'h-1'-benzopyran)-2', 2'-indoline] compound

Publications (1)

Publication Number Publication Date
NL253898A true NL253898A (en)

Family

ID=26887043

Family Applications (2)

Application Number Title Priority Date Filing Date
NL253898D NL253898A (en) 1959-07-16
NL127064D NL127064C (en) 1959-07-16

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL127064D NL127064C (en) 1959-07-16

Country Status (6)

Country Link
US (1) US3231584A (en)
CH (1) CH395090A (en)
DE (1) DE1294382B (en)
FR (1) FR1262318A (en)
GB (1) GB883803A (en)
NL (2) NL127064C (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL128266C (en) * 1961-10-05
FR1394163A (en) * 1964-02-18 1965-04-02 Saint Gobain Photochromic compositions, in particular for the manufacture of variable transmission glazing
FR1451332A (en) * 1965-06-23 1966-01-07 Saint Gobain Novel di-spiropyran photochromic substances and process for preparing these substances
US3390192A (en) * 1965-10-20 1968-06-25 Geigy Chem Corp Dihydropyrenes and photochromic compositions based thereon
US3528926A (en) * 1966-10-27 1970-09-15 Ncr Co Mixed photochromic compound composition
US3507563A (en) * 1967-02-01 1970-04-21 Itek Corp Color-reversible anti-glare mirror
GB1245079A (en) * 1968-12-10 1971-09-02 Fuji Photo Film Co Ltd Spiro-indoline derivatives and their use in pressure-sensitive copying paper
FR2036168A5 (en) * 1969-03-06 1970-12-24 Saint Gobain
GB8610709D0 (en) * 1986-05-01 1986-06-04 Plinkington Bros Plc Photochromic lenses
GB8611837D0 (en) * 1986-05-15 1986-06-25 Plessey Co Plc Photochromic spiropyran compounds
GB8614680D0 (en) * 1986-06-17 1986-07-23 Plessey Co Plc Photoreactive lenses
US5171636A (en) * 1989-12-12 1992-12-15 Enichem Synthesis S.P.A. Photochromatic and thermochromatic spiro-oxazepin-oxazine compounds and the process for their preparation
IT1237528B (en) * 1989-12-12 1993-06-08 Enichem Sintesi SPIRO-OSSAZEPIN-OSSAZINE PHOTOCROMATIC AND THERMOCHROME COMPOUNDS AND PROCEDURE FOR THEIR PREPARATION

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE442515A (en) * 1940-07-30
NL226920A (en) * 1957-04-23
NL250081A (en) * 1959-04-03
US3085469A (en) * 1959-10-12 1963-04-16 Ncr Co Optical information-processing apparatus and method

Also Published As

Publication number Publication date
FR1262318A (en) 1961-05-26
GB883803A (en) 1961-12-06
US3231584A (en) 1966-01-25
DE1294382B (en) 1969-05-08
CH395090A (en) 1965-07-15
NL127064C (en)

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