发明名称 |
Halogenated anthraquinone and their use as near infrared rays absorbing optical filters |
摘要 |
High-purity 1,4,5,8-tetraanilidoanthraquinones which are substituted at the p-position of at least one of four anilido benzene rings by a halogen atom are good near infrared rays absorbing filters and at prepared from high purity 1,4,5,8-tetrachloroanthraquinone by reaction with a correspondingly substituted aniline or mixture of anilines in the presence of a salt of an aliphatic carboxylic acid,. a benzyl alcohol derivative and copper ions as reaction catalyst.
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申请公布号 |
US5342974(A) |
申请公布日期 |
1994.08.30 |
申请号 |
US19880291028 |
申请日期 |
1988.12.28 |
申请人 |
MITSUI TOATSU CHEMICALS, INCORPORATED |
发明人 |
OHYAMA, TSUKASA;KURODA, SHIZUO;TAKUMA, KEISUKE;AIGA, HIROSHI |
分类号 |
G02B5/22;C09B1/32;C09K3/00;G11B7/244;(IPC1-7):C07C50/20 |
主分类号 |
G02B5/22 |
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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