发明名称 |
Photochromic materials and photochromic compositions and articles including the same |
摘要 |
Photochromic materials and photochromic compositions and articles including the photochromic materials are disclosed. The photochromic materials may be the reaction product of a hyperbranched polyester polyol having, on average, at least two reactive hydroxyl groups, and at least one photochromic indeno-fused naphthopyran.
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申请公布号 |
US7907346(B2) |
申请公布日期 |
2011.03.15 |
申请号 |
US20070687053 |
申请日期 |
2007.03.16 |
申请人 |
TRANSITIONS OPTICAL, INC. |
发明人 |
SWARUP SHANTI;KNOX CAROL L.;WANG FENG |
分类号 |
G02B3/00;C09K19/12 |
主分类号 |
G02B3/00 |
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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