发明授权
US08303844B2 Benzo[f]chrome any pyrano[3,2-f]chrome derivatives for use in liquid crystal media
有权
苯并[f]铬任何用于液晶介质的吡喃并[3,2-f]铬衍生物
- 专利标题: Benzo[f]chrome any pyrano[3,2-f]chrome derivatives for use in liquid crystal media
- 专利标题(中): 苯并[f]铬任何用于液晶介质的吡喃并[3,2-f]铬衍生物
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申请号: US12744804申请日: 2008-11-03
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公开(公告)号: US08303844B2公开(公告)日: 2012-11-06
- 发明人: Axel Jansen , Melanie Klasen-Memmer
- 申请人: Axel Jansen , Melanie Klasen-Memmer
- 申请人地址: DE Darmstadt
- 专利权人: Merck Patent Gesellschaft mit beschrankter Haftung
- 当前专利权人: Merck Patent Gesellschaft mit beschrankter Haftung
- 当前专利权人地址: DE Darmstadt
- 代理机构: Millen, White, Zelano & Branigan, P.C.
- 优先权: DE102007057028 20071127
- 国际申请: PCT/EP2008/009242 WO 20081103
- 国际公布: WO2009/068152 WO 20090604
- 主分类号: C09K19/32
- IPC分类号: C09K19/32 ; C09K19/34 ; C09K19/06 ; C07D493/00 ; G02F1/1333
摘要:
The present invention relates to benzo[f]chromene and pyrano[3,2-f]-chromene derivatives of the formula I in which L1, L2, R1, R2, A1, A2, Z1, Z2, m and n are as defined in claim 1, to the preparation thereof, to the use thereof as components in liquid-crystalline media, and to electro-optical display elements which contain the liquid-crystalline media according to the invention.