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1.发明公开Substituted anthraquinone-type isotropic dyes for liquid crystal display devices 失效用于液晶显示器件的替代的等离子体型等离子体染料
公开(公告)号：EP0115683A3
公开(公告)日：1986-03-26
申请号：EP83307567
申请日：1983-12-13
IPC分类号： C09K03/34 , C09B01/26 , C09B01/503 , C09B01/516 , C09B01/58 , C09B05/36 , C09B05/32
摘要： Certain substituted anthraquinone compounds have been found to be useful as isotropic dyestuffs in guest-host combinations with nematic, cholesteric and smectic liquid crystals and other well-known dichroic dyestuffs. By "isotropic" it is meant that the disclosed dyestuffs have optical order parameters (S) very close to zero. Use of the disclosed isotropic dyestuffs with additional well-known dichroic dyes in liquid crystal display devices, provides displays which alter between one colored state and another, depending upon the presence or absence of an electric field across the display.
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2.发明公开
公开(公告)号：EP0057382A3
公开(公告)日：1982-08-25
申请号：EP82100402
申请日：1982-01-21
申请人： BAYER AG
IPC分类号： C09B01/36 , C09B01/467 , C09B05/36
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3.发明公开Vat dyes of the trisanthraquinonylaminotriazine series as well as their preparation 失效三硝基氨基苯胺系列的增值税作为其准备工作
公开(公告)号：EP0057375A3
公开(公告)日：1982-08-18
申请号：EP82100367
申请日：1982-01-20
申请人： BAYER AG
IPC分类号： C09B05/36 , C09B01/467
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公开(公告)号：EP0119956A3
公开(公告)日：1987-03-25
申请号：EP84810084
申请日：1984-02-16
申请人： CIBA-GEIGY AG
摘要： Bei der Herstellung von Küpenfarbstoffen durch Kon densation von verküpbaren polycyclischen Verbindungen, welche eine primäre Aminogruppe aufweisen, mit aromati schen Halogenverbindungen in Anwesenheit eines Kupfer katalysators kommt man mit erheblich weniger Katalysator aus, wenn man diesen der Reaktionsmischung in mehreren Portionen zusetzt.
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