EP0050594A3 - Photochromic composition - Google Patents

Photochromic composition Download PDF

Info

Publication number
EP0050594A3
EP0050594A3 EP81830195A EP81830195A EP0050594A3 EP 0050594 A3 EP0050594 A3 EP 0050594A3 EP 81830195 A EP81830195 A EP 81830195A EP 81830195 A EP81830195 A EP 81830195A EP 0050594 A3 EP0050594 A3 EP 0050594A3
Authority
EP
European Patent Office
Prior art keywords
photochromic composition
shopwindows
carbazone
dithizone
spectacles
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.)
Withdrawn
Application number
EP81830195A
Other languages
German (de)
French (fr)
Other versions
EP0050594A2 (en
Inventor
Aristide Pelizza
Gian Pietro Pelizza
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.)
SYNTERGE SNC
Original Assignee
SYNTERGE SNC
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 SYNTERGE SNC filed Critical SYNTERGE SNC
Publication of EP0050594A2 publication Critical patent/EP0050594A2/en
Publication of EP0050594A3 publication Critical patent/EP0050594A3/en
Withdrawn legal-status Critical Current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
    • G03C1/00—Photosensitive materials
    • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Eyeglasses (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Abstract

A photochromic liquid composition comprises a solution of an azo compound of the type of carbazone such as dithizone and a metal haloid in a solvent with or without additional dyes to be applied to transparent plastic surfaces such as spectacles, shopwindows, etc.
EP81830195A 1980-10-16 1981-10-15 Photochromic composition Withdrawn EP0050594A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2537480 1980-10-16
IT25374/80A IT1194818B (en) 1980-10-16 1980-10-16 PHOTOCROMATIC COMPOSITION

Publications (2)

Publication Number Publication Date
EP0050594A2 EP0050594A2 (en) 1982-04-28
EP0050594A3 true EP0050594A3 (en) 1982-05-26

Family

ID=11216503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81830195A Withdrawn EP0050594A3 (en) 1980-10-16 1981-10-15 Photochromic composition

Country Status (2)

Country Link
EP (1) EP0050594A3 (en)
IT (1) IT1194818B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4423904A1 (en) * 1994-07-10 1996-01-11 Rodenstock Optik G Photochromic substances (car)
US7077985B2 (en) 2000-05-30 2006-07-18 Vision-Ease Lens Injection molding of lens
EP2955567A1 (en) 2003-09-09 2015-12-16 Insight Equity A.P.X., LP Photochromic polyurethane laminate
US7858001B2 (en) 2003-09-09 2010-12-28 Insight Equity A.P.X., L.P. Photochromic lens
US8002935B2 (en) 2005-03-04 2011-08-23 Insight Equity A.P.X., L.P. Forming method for polymeric laminated wafers comprising different film materials

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519635A (en) * 1968-04-18 1970-07-07 American Cyanamid Co Photochromic compositions of a thermoplastic polymer and a polymeric material
US3575872A (en) * 1969-08-27 1971-04-20 American Cyanamid Co Selenocarbazonates and their use as photochromic materials
US4043637A (en) * 1973-06-15 1977-08-23 American Optical Corporation Photochromic light valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519635A (en) * 1968-04-18 1970-07-07 American Cyanamid Co Photochromic compositions of a thermoplastic polymer and a polymeric material
US3575872A (en) * 1969-08-27 1971-04-20 American Cyanamid Co Selenocarbazonates and their use as photochromic materials
US4043637A (en) * 1973-06-15 1977-08-23 American Optical Corporation Photochromic light valve

Also Published As

Publication number Publication date
IT1194818B (en) 1988-09-28
IT8025374A0 (en) 1980-10-16
EP0050594A2 (en) 1982-04-28

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): AT CH DE FR

AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19830429

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PELIZZA, ARISTIDE

Inventor name: PELIZZA, GIAN PIETRO