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公开(公告)号：US5089629A
公开(公告)日：1992-02-18
申请号：US565790
申请日：1990-08-13
IPC分类号： C07C25/18 , C07D317/72 , C09K19/30
CPC分类号： C07D317/72 , C07C25/18 , C09K19/3098
摘要： A compound represented by formula (I): ##STR1## wherein wherein R represents a straight chain alkyl group having from 1 to 9 carbon atoms; ##STR2## represents ##STR3## X represents a hydrogen atom or a fluorine atom; and ##STR4## has a trans (equatorial-equatorial) configuration, is disclosed. The compound of formula (I) exhibits a nematic phase in the vicinity of room temperature or in a temperature range higher than room temperature and has a small optical anisotropy and a positive dielectric anisotropy and is, therefore, useful in preparing a liquid crystal display cell excellent in viewing-angle characteristics.
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公开(公告)号：US4910350A
公开(公告)日：1990-03-20
申请号：US250283
申请日：1988-09-28
IPC分类号： C07C25/18 , C07D317/72 , C09K19/30
CPC分类号： C07D317/72 , C07C25/18 , C09K19/3098
摘要： A compound represented by formula (I): ##STR1## wherein R represents a straight chain alkyl group having from 1 to 9 carbon atoms; ##STR2## represents ##STR3## represents a hydrogen atom or a fluorine atom; and ##STR4## has a trans (equatorial-equatorial) configuration, is disclosed. The compound of formula (I) exhibits a nematic phase in the vicinity of room temperature or in a temperature range higher than room temperature and has a small optical anisotropy and a positive dielectric anisotropy and is, therefore, useful in preparing a liquid crystal display cell excellent in viewing-angle characteristics.
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公开(公告)号：US4814523A
公开(公告)日：1989-03-21
申请号：US195326
申请日：1988-05-18
CPC分类号： C07C25/18 , C09K19/3003
摘要： A tetracyclic nematic liquid crystal compound of the following formula: ##STR1## wherein R represents a straight-chained alkyl group carrying one to seven carbon atoms; and ##STR2## has a trans (equatorial-equatorial) configuration; is disclosed. This compound has a high N-I transition temperature and a low S-N transition temperature and is highly useful as an electro-optical display material.
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公开(公告)号：US4946986A
公开(公告)日：1990-08-07
申请号：US315874
申请日：1989-02-27
IPC分类号： C07C13/28 , C07C25/18 , C07C255/50 , C09K19/30
CPC分类号： C07C255/50 , C07C13/28 , C07C25/18 , C09K19/3098 , C07C2101/16
摘要： A novel tetracyclic cyclohexylcyclohexene derivatives represented by formula: ##STR1## wherein ##STR2## n, X and Y are as defined in claim 1, are disclosed. The compounds are useful as electroptic display materials.
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公开(公告)号：US4698177A
公开(公告)日：1987-10-06
申请号：US850585
申请日：1986-04-11
CPC分类号： C07C13/28 , C09K19/3098
摘要： A compound represented by the general formula ##STR1## wherein R denotes a linear alkyl group having 1 to 9 carbon atoms, A denotes ##STR2## denotes a linear alkyl group having 1 to 9 carbon atoms, and each cyclohexane ring is arranged in a trans-(equatorial-equatorial) form.
摘要翻译： 由通式
表示的化合物，其中R表示具有1至9个碳原子的直链烷基，A表示 表示具有1至9个碳原子的直链烷基，并且每个环己烷环以反式 - （赤道赤道）形式。 -
公开(公告)号：US5321169A
公开(公告)日：1994-06-14
申请号：US60040
申请日：1993-05-11
IPC分类号： C07C13/28 , C07C25/18 , C07C255/50 , C09K19/30 , C07C15/12
CPC分类号： C07C255/50 , C07C13/28 , C07C25/18 , C09K19/3098 , C07C2101/16
摘要： A novel tetracyclic cyclohexylcyclohexene derivatives represented by formula: ##STR1## wherein ##STR2## n, X and Y are as defined in the specifications, are disclosed. The compounds are useful as electroptic display materials.
摘要翻译： 公开了由下式表示的新颖的四环环己基环己烯衍生物：其中X，Y和Y如说明书中所定义。 这些化合物可用作电泳显示材料。
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公开(公告)号：US4654421A
公开(公告)日：1987-03-31
申请号：US874930
申请日：1986-06-16
IPC分类号： C07C43/215 , C07D239/26 , C09K19/30 , C09K19/34 , C07D239/04
CPC分类号： C07D239/26 , C07C43/215 , C09K19/3003 , C09K19/3469 , C09K2019/0444
摘要： 4-Substituted phenyl crotyl ether derivative is disclosed, which is a novel nematic liquid crystal compound having a comparatively high N-I point and which, when preparing a practically usable mixed liquid crystal having an N-I point higher than 65.degree. C. by mixing this compound with at least one other liquid crystal compound, can minimize the increase range of the viscosity of the resulting mixed liquid crystal.
摘要翻译： 公开了4-取代的苯基巴豆基醚衍生物，其是具有较高NI点的新型向列型液晶化合物，并且当通过将该化合物与 至少一种其它液晶化合物可以最小化所得混合液晶的粘度的增加范围。
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公开(公告)号：US4754051A
公开(公告)日：1988-06-28
申请号：US912474
申请日：1986-09-29
CPC分类号： C09K19/586 , C09K19/58
摘要： A novel optically active compound of the formula ##STR1## is capable of forming a chiral nematic liquid crystal composition having short spiral pitch by adding a small amount of it to a generally nematic liquid crystal composition. The compound of this invention is useful in the manufacture of SBE display device which is excellent especially in high level multiplexing driving system.
摘要翻译： 式（IMAGE）的新颖光学活性化合物能够通过向普通向列型液晶组合物中加入少量螺旋形螺旋形的手性向列型液晶组合物而形成。 本发明的化合物可用于制造SBE显示装置，其特别是在高级多路复用驱动系统中是优异的。
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公开(公告)号：US4961874A
公开(公告)日：1990-10-09
申请号：US269817
申请日：1988-11-10
IPC分类号： C07C43/215 , C09K19/18 , C09K19/30
CPC分类号： C07C43/215 , C09K19/18 , C09K19/3059
摘要： Novel optically active tolan derivative represented by the general formula (I) and process for preparing thereof; ##STR1## (wherein all the symbols are the same as defined in the appended claims) are disclosed. These are effective for use in preparation of liquid crystal material capable of effectively preventing the formation of the cross-talk phenomenon due to changes due to temperature in the high level multiplexing driving system.
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公开(公告)号：US4814516A
公开(公告)日：1989-03-21
申请号：US61242
申请日：1987-06-15
IPC分类号： C07C43/215 , C09K19/18 , C09K19/30 , C09K19/52 , C09K19/06
CPC分类号： C07C43/215 , C09K19/18 , C09K19/3059
摘要： Optically active tolan compounds of the formula ##STR1## wherein R and R' are straight chain alkyl and n is 0 or 1, are useful in the preparation of liquid crystalline materials capable of effectively preventing cross-talk due to temperature changes in high level, multiplexing driving systems.
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