发明名称 |
Polyalkoxylated naphthopyrans |
摘要 |
Described are novel photochromic polyalkoxylated naphthopyran compounds, examples of which are certain 2H-naphtho[1,2-b]pyrans, 3H-naphtho[2,1-b]pyrans and indeno[2,1-f]naphtho[1,2-b]pyrans, each having at least one polyalkoxylated substituent of from 2 to 50 alkoxy units per substituent. Specific substituents may also be present on the naphtho, indeno and pyrano portions of the compounds. These compounds may be represented by the following graphic formulae:
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申请公布号 |
US5961892(A) |
申请公布日期 |
1999.10.05 |
申请号 |
US19980151982 |
申请日期 |
1998.09.11 |
申请人 |
PPG INDUSTRIES OHIO, INC. |
发明人 |
GEMERT, BARRY VAN;STEWART, KEVIN J. |
分类号 |
G02C7/10;C07D311/92;C07D311/94;C07D311/96;C08G65/331;C08J5/00;C08K5/1545;C08L101/00;C09K9/02;G02B5/23;(IPC1-7):G02B5/23 |
主分类号 |
G02C7/10 |
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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