Invention Grant
- Patent Title: Photochromic molding compositions and articles produced therefrom
- Patent Title (中): 光致变色成型组合物和由其制备的制品
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Application No.: US12174430Application Date: 2008-07-16
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Publication No.: US07993755B2Publication Date: 2011-08-09
- Inventor: Ralf Hala , Botho Hoffmann , Nikolai Lamberts
- Applicant: Ralf Hala , Botho Hoffmann , Nikolai Lamberts
- Applicant Address: CH Domat/Ems
- Assignee: EMS-Patent AG
- Current Assignee: EMS-Patent AG
- Current Assignee Address: CH Domat/Ems
- Agency: Sughrue Mion, PLLC
- Priority: EP07113100 20070725
- Main IPC: C08G69/26
- IPC: C08G69/26
Abstract:
A polyamide molding composition is described, comprising at least one transparent polyesteramide in a proportion by weight of from 70 to 99.99% by weight; at least one further polymer in a proportion by weight of from 0 to 30% by weight; at least one photochromic dye in a proportion by weight of from 0.01 to 2% by weight; and also optionally further dyes and/or additives. The invention further encompasses articles manufactured therefrom, e.g. foils, for the coating of photochromic ophthalmic lenses, or the like.
Public/Granted literature
- US20090029154A1 PHOTOCHROMIC MOLDING COMPOSITIONS AND ARTICLES PRODUCED THEREFROM Public/Granted day:2009-01-29
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