发明名称 |
PHOTOCHROMIC BENZOPYRANS |
摘要 |
The present invention relates to photochromic benzopyrans and to the use thereof in plastics of all kinds, especially for ophthalmic purposes. The inventive compounds are photochromic benzopyran compounds in which a polycyclic aromatic is joined to the 5 and 6 positions of a benzopyran, where the bond in the 6 position is direct and the bond in the 5 position is via a mono- or diatomic bridge.
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申请公布号 |
US2010243971(A1) |
申请公布日期 |
2010.09.30 |
申请号 |
US20080738124 |
申请日期 |
2008.11.25 |
申请人 |
MELZIG MANFRED;ROHLFING YVEN;WEIGAND UDO |
发明人 |
MELZIG MANFRED;ROHLFING YVEN;WEIGAND UDO |
分类号 |
G02B5/23;C07D311/78;C07D311/96;C07D493/04;C07D493/20;C07D497/10;C07D497/20;C07D498/10;C07D498/20 |
主分类号 |
G02B5/23 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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