发明授权
- 专利标题： Photochromic naphthopyrans
- 专利标题（中）： 光致变色萘并吡喃
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申请号： US10013518申请日： 2001-12-13
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公开(公告)号： US07459555B2公开(公告)日： 2008-12-02
- 发明人: Manfred Melzig , Claudia Mann , Udo Weigand
- 申请人： Manfred Melzig , Claudia Mann , Udo Weigand
- 申请人地址： DE Munich
- 专利权人： Rodenstock GmbH
- 当前专利权人： Rodenstock GmbH
- 当前专利权人地址： DE Munich
- 代理机构： Crowell & Moring LLP
- 优先权： DE19827411 19980619
- 主分类号： C07D265/30
- IPC分类号： C07D265/30 ; C07D405/00 ; C07D311/78 ; C07D307/77
摘要：
The present invention relates to photochromic 2H-naphtho[1,2-b]pyrans as well as their use in synthetic resins of all types, especially for ophthalmic purposes. In particular, the present invention relates to photochromic naphthopyran compounds, for which a further ring system is bonded to the f side of the naphthopyran. The inventive photochromic dyes generally have the general formula (I) wherein n, R1, R2, R3, X, B and B′ are defined as in claim 1. The inventive compounds are distinguished by good darkening and decolorizing properties and a very good service life.
公开/授权文献
- US20020052499A1 Photochromic naphthopyrans 公开/授权日：2002-05-02
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