发明授权
- 专利标题: Photochromic compound and optical functional material
- 专利标题(中): 光致变色化合物和光学功能材料
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申请号: US11723668申请日: 2007-03-21
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公开(公告)号: US07628938B2公开(公告)日: 2009-12-08
- 发明人: Tsuyoshi Kawai , Takuya Nakajima , Shigekazu Kawai
- 申请人: Tsuyoshi Kawai , Takuya Nakajima , Shigekazu Kawai
- 申请人地址: JP Ikoma-shi
- 专利权人: National University Corporation Nara Institute of Science and Technology
- 当前专利权人: National University Corporation Nara Institute of Science and Technology
- 当前专利权人地址: JP Ikoma-shi
- 代理机构: Oliff & Berridge, PLC
- 优先权: JP2006-189651 20060710
- 主分类号: G02B5/23
- IPC分类号: G02B5/23
摘要:
The present invention provides a photochromic compound that is colored when irradiated with visible light and quickly faded when set in a dark place. The photochromic compound according to the present invention is expressed by the following general formula (I): where each of A1, A2 and A3 is a five-member rings forming a 6π-electron system, the three rings being identical, partially identical or totally different from each other, and each ring may have a substituent; B1 and B2 are functional groups, each having an atomic number of five or larger, including a ring compound, and bonded to the 2-carbon of each of A2 and A3, respectively; and R1, R2 and R3 are substituents identical to or different from each other. This compound is highly colorable and durable even when it is dispersed into plastic macromolecular materials. Therefore, it is suitable as a dye material for sunglasses or similar products.
公开/授权文献
- US20080006797A1 Photochromic compound and optical functional material 公开/授权日:2008-01-10