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公开(公告)号：EP0201554B2
公开(公告)日：1993-01-27
申请号：EP85905639.2
申请日：1985-11-08
申请人： Secretary of State for Defence in Her Britannic Majesty's Gov. of the United Kingdom of Great Britain and Northern Ireland , STC PLC
发明人： BONE, Matthew, Francis 47 Newtown Road , JACKSON, Adam , CHAN, Lawrence, Kam, Ming 112 Lee Street , COATES, David , GEMMELL, Peter, Alan , GRAY, George, William , LACEY, David , TOYNE, Kenneth, Johnson , YOUNG, Daniel, James, Stephen 2 York Way , SCROWSTON, Richard, Michael 11 Saunders Croft
CPC分类号： C09K19/2028 , C09K19/126 , C09K19/2021 , C09K19/22 , C09K19/3001 , C09K19/3068 , C09K19/32 , C09K19/42 , C09K19/50 , C09K2019/3095
摘要： Ferroelectric smectic liquid crystal mixtures are provided consisting of two constituents; a smectic host and another containing a chiral compound in which rotation of the chiral centre relative to the molecular core is sterically hindered, so that the chiral compound induces a high Ps in the mixture. A preferred class of chiral compounds is those derived from naturally occurring compounds with chiral groups, especially alpha-hydroxycarboxylic acids, amino acids and terpenoids, e.g. with chiral groups (I), (II), (III). The chiral group is incorporated into a compound containing a mesogenic combination of groups, e.g. with chains of cyclic groups and some mesogenic combinations are described.
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2.发明授权ALPHA-HYDROXY CARBOXYLIC ACID DERIVATIVES SUITABLE FOR USE IN LIQUID CRYSTAL MATERIALS AND DEVICES 失效适用于液晶材料和器件的ALPHA-羟基羧酸衍生物
公开(公告)号：EP0201578B1
公开(公告)日：1989-11-02
申请号：EP85905852.1
申请日：1985-11-08
申请人： Secretary of State for Defence in Her Britannic Majesty's Gov. of the United Kingdom of Great Britain and Northern Ireland , STC PLC
发明人： CHAN, Lawrence, Kam, Ming 112 Lee Street , COATES, David , GEMMELL, Peter, Alan 71 The Knoll , GRAY, George, William Glenwood , LACEY, David , TOYNE, Kenneth, Johnson , YOUNG, Daniel, James, Stephen 2 York Way
CPC分类号： C09K19/586 , C09K19/126 , C09K19/2028 , C09K19/3068 , C09K19/42 , C09K19/50
摘要： Compounds which may be used as a dopant or host in a ferroelectric chiral smectic liquid crystal mixture. The compounds are characterised in that they are derivatives of an X-hydroxy carboxylic acid and contain the chiral unit (I), in which Ro may be alkyl, alkoxy, halogen, formula (II), where b may be 0 to 3 and the phenyl ring may be substituted, and a is 0 or 1. The chiral unit is combined with a range of mesogenic combinations of groups. Lactic acid derivatives are described in detail (i.e. Ro = methyl) together with various preparative routes, for example the compound formula (III), which has dopant properties in a range of hosts.
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公开(公告)号：EP0201554B1
公开(公告)日：1989-02-08
申请号：EP85905639.2
申请日：1985-11-08
申请人： Secretary of State for Defence in Her Britannic Majesty's Gov. of the United Kingdom of Great Britain and Northern Ireland , STC PLC
发明人： BONE, Matthew, Francis 47 Newtown Road , JACKSON, Adam , CHAN, Lawrence, Kam, Ming 112 Lee Street , COATES, David , GEMMELL, Peter, Alan , GRAY, George, William , LACEY, David , TOYNE, Kenneth, Johnson , YOUNG, Daniel, James, Stephen 2 York Way , SCROWSTON, Richard, Michael 11 Saunders Croft
CPC分类号： C09K19/2028 , C09K19/126 , C09K19/2021 , C09K19/22 , C09K19/3001 , C09K19/3068 , C09K19/32 , C09K19/42 , C09K19/50 , C09K2019/3095
摘要： Ferroelectric smectic liquid crystal mixtures are provided consisting of two constituents; a smectic host and another containing a chiral compound in which rotation of the chiral centre relative to the molecular core is sterically hindered, so that the chiral compound induces a high Ps in the mixture. A preferred class of chiral compounds is those derived from naturally occurring compounds with chiral groups, especially alpha-hydroxycarboxylic acids, amino acids and terpenoids, e.g. with chiral groups (I), (II), (III). The chiral group is incorporated into a compound containing a mesogenic combination of groups, e.g. with chains of cyclic groups and some mesogenic combinations are described.
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