Invention Grant
- Patent Title: Photochromic coating exhibiting improved performance
- Patent Title (中): 光致变色涂层表现出改善的性能
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Application No.: US12487305Application Date: 2009-06-18
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Publication No.: US08110127B2Publication Date: 2012-02-07
- Inventor: Ronald Berzon , Leo Charles Collett
- Applicant: Ronald Berzon , Leo Charles Collett
- Applicant Address: FR Charenton, Cedex US FL Pinellas Park
- Assignee: Essilor International (Compagnie Generale d'Optique),Transitions Optical, Inc.
- Current Assignee: Essilor International (Compagnie Generale d'Optique),Transitions Optical, Inc.
- Current Assignee Address: FR Charenton, Cedex US FL Pinellas Park
- Agency: Keusey & Associates, P.C.
- Main IPC: G02B5/23
- IPC: G02B5/23
Abstract:
A photochromic coating exhibiting improved performance and photochromic lenses made using the coating. The coating has excellent photochromic darkening and fatigue properties. The coating formulation is made from a monomer blend having at least two different types of monomers. A metal salt catalyst is used along with an initiator. An antioxidant is used in combination with a hindered amine light stabilizer. The coating is suitable for use in an in-mold coating process.
Public/Granted literature
- US20090315199A1 PHOTOCHROMIC COATING EXHIBITING IMPROVED PERFORMANCE Public/Granted day:2009-12-24
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