Invention Grant
- Patent Title: Composition comprising photochromic dyes in an ionic solvent
- Patent Title (中): 在离子溶剂中包含光致变色染料的组合物
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Application No.: US12920883Application Date: 2009-03-02
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Publication No.: US08411347B2Publication Date: 2013-04-02
- Inventor: Samuel Archambeau , Jean-Paul Cano , Corinne Galley , Francois Malbosc
- Applicant: Samuel Archambeau , Jean-Paul Cano , Corinne Galley , Francois Malbosc
- Applicant Address: FR Charenton le Pont
- Assignee: Essilor International (compagnie Generale D'optique)
- Current Assignee: Essilor International (compagnie Generale D'optique)
- Current Assignee Address: FR Charenton le Pont
- Agency: Occhiuti Rohlicek & Tsao LLP
- Priority: FR0851442 20080305
- International Application: PCT/FR2009/050339 WO 20090302
- International Announcement: WO2009/115721 WO 20090924
- Main IPC: G02F1/03
- IPC: G02F1/03
Abstract:
A photochromic composition that is liquid at 20° C. and includes (a) at least one photochromic dye and (b) an ionic solvent selected from (b)(i) room-temperature ionic liquids (RTIL), (b)(ii) ionic liquid mixtures that are liquid at room temperature, and (b)(iii) room-temperature liquid mixtures of at least one ionic liquid and at least one organic solvent that is miscible therewith. The use of said photochromic composition in optical devices such as ophthalmic lenses is also described.
Public/Granted literature
- US20110013252A1 COMPOSITION COMPRISING PHOTOCHROMIC DYES IN AN IONIC SOLVENT Public/Granted day:2011-01-20
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