公开(公告)号：US5324451A

公开(公告)日：1994-06-28

申请号：US870743

申请日：1992-04-20

申请人： Sadao Takehara ,  Tadao Shoji ,  Hiroshi Ogawa ,  Toru Fujisawa ,  Masashi Osawa

发明人： Sadao Takehara ,  Tadao Shoji ,  Hiroshi Ogawa ,  Toru Fujisawa ,  Masashi Osawa

IPC分类号： C07C69/773 ,  C09K19/12 ,  C09K19/20 ,  C07C69/76

CPC分类号： C09K19/126 ,  C09K19/2021

摘要： A compound represented by formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having from 1 to 18 carbon atoms; R.sub.2 represents an alkyl group having from 2 to 16 carbon atoms; rings A, B, C, and D each represents a 1,4-phenylene group or a 1,4-phenylene group having one or two halogen atoms; Y represents a single bond, ##STR2## m and n each represents 0 or 1; p represents 0, 1, or 2; q represents 0 or an integer of from 1 to 6; and C* and C** each represents an asymmetric carbon atom in an (S)- or (R)-configuration, and a liquid crystal composition containing the compound of formula (I). The compound of formula (I) is a chiral liquid crystal compound exhibiting large spontaneous polarization, a long helical pitch, an SC* phase in a broad temperature range including room temperature, satisfactory orientation, and a high rate of response.

摘要翻译： 由式（I）表示的化合物：其中R 1表示具有1至18个碳原子的烷基; R2表示具有2至16个碳原子的烷基; 环A，B，C和D各自表示具有一个或两个卤素原子的1,4-亚苯基或1,4-亚苯基; Y表示单键， m，n表示0或1; p表示0,1或2; q表示0或1至6的整数; 和C *和C **各自表示（S） - 或（R） - 构型中的不对称碳原子，和含有式（I）化合物的液晶组合物。 式（I）的化合物是在包括室温，令人满意的取向和高响应速度的宽温度范围内表现出大的自发极化，长螺距，SC *相的手性液晶化合物。

公开(公告)号：US4914224A

公开(公告)日：1990-04-03

申请号：US7612

申请日：1987-01-28

申请人： Tadao Shoji ,  Sadao Takehara ,  Toru Fujisawa ,  Masashi Osawa ,  Hiroshi Ogawa ,  Yoshi Arai ,  Jitsuo Kurokawa

发明人： Tadao Shoji ,  Sadao Takehara ,  Toru Fujisawa ,  Masashi Osawa ,  Hiroshi Ogawa ,  Yoshi Arai ,  Jitsuo Kurokawa

IPC分类号： C07C69/773 ,  C09K19/12 ,  C09K19/20

CPC分类号： C09K19/12 ,  C09K19/2021

摘要： An optically active carboxylic acid derivative represented by the general formula ##STR1## wherein R represents a normal alkyl group having 1 to 20 carbon atoms, m and n represent 0 or 1 but are not 1 at the same time, X represents a hydrogen or halogen atom, Y represents a hydrogen or fluorine atom, provided that when Y is a hydrogen atom, X is a halogen atom, and that when n is 0, Y is ahydrogen atom, and Q* represents an optically active alkyl or 1-alkoxyethyl group having an asymmetric carbon atom.

公开(公告)号：US4911862A

公开(公告)日：1990-03-27

申请号：US210375

申请日：1988-06-23

申请人： Tadao Shoji ,  Sadao Takehara ,  Toru Fujisawa ,  Masashi Osawa ,  Hiroshi Ogawa ,  Yoshi Arai ,  Jitsuo Kurokawa

发明人： Tadao Shoji ,  Sadao Takehara ,  Toru Fujisawa ,  Masashi Osawa ,  Hiroshi Ogawa ,  Yoshi Arai ,  Jitsuo Kurokawa

IPC分类号： C07C69/773 ,  C09K19/12 ,  C09K19/20

CPC分类号： C09K19/12 ,  C09K19/2021

摘要： An optically active carboxylic acid derivative represented by the general formula ##STR1## wherein R represents a normal alkyl group having 1 to 20 carbon atoms, m and n represent 0 or 1 but are not 1 at the same time, X represents a hydrogen or halogen atom, Y represents a hydrogen or fluorine atom, provided that when Y is a hydrogen atom, X is a halogen atom, and that when n is 0, Y is a hydrogen atom, and Q* represents an optically active alkyl or 1-alkoxyethyl group having an asymmetric carbon atom.

摘要翻译： 由通式（I）表示的光学活性羧酸衍生物，其中R表示具有1至20个碳原子的正烷基，m和n表示0或1，但不同时为1，X表示 氢或卤素原子，Y表示氢或氟原子，条件是当Y为氢原子时，X为卤素原子，当n为0时，Y为氢原子，Q *为光学活性烷基或 具有不对称碳原子的1-烷氧基乙基。

公开(公告)号：US5128472A

公开(公告)日：1992-07-07

申请号：US606662

申请日：1990-10-31

申请人： Masashi Osawa ,  Tadao Shoji ,  Sadao Takehara ,  Hiroshi Ogawa ,  Toru Fujisawa ,  Takeshi Kuriyama ,  Kayoko Nakamura

发明人： Masashi Osawa ,  Tadao Shoji ,  Sadao Takehara ,  Hiroshi Ogawa ,  Toru Fujisawa ,  Takeshi Kuriyama ,  Kayoko Nakamura

IPC分类号： C07D239/26 ,  C07D241/12 ,  C09K19/34

CPC分类号： C07D239/26 ,  C07D241/12 ,  C09K19/3452

摘要： A 2,5-disubstituted pyrizine derivative and a 2,5-disubstituted pyrimidine derivative of the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each independently represents a straight-chain or branched alkyl group containing 1 to 20 carbon atoms;X represents a halogen atom; and ##STR2## represents a pyrazine-2,5-diyl or a pyrimidine-2,5-diyl group; each useful as an electrooptical display material are disclosed. Further a liquid crystal composition comprising said compounds as well as a ferroelectric display device wherein said liquid crystal composition is used are disclosed.

摘要翻译： 式（I）的2,5-二取代吡嗪衍生物和2,5-二取代嘧啶衍生物：其中R 1和R 2各自独立地表示含有1至20个碳的直链或支链烷基 原子 X表示卤原子; 并且表示吡嗪-2,5-二基或嘧啶-2,5-二基; 各自用作电光显示材料。 此外，还公开了包含所述化合物的液晶组合物以及其中使用所述液晶组合物的铁电显示装置。

公开(公告)号：US4997942A

公开(公告)日：1991-03-05

申请号：US325813

申请日：1989-03-20

申请人： Masashi Osawa ,  Tadao Shoji ,  Sadao Takehara ,  Hiroshi Ogawa ,  Toru Fujisawa ,  Takeshi Kuriyama ,  Kayoko Nakamura

发明人： Masashi Osawa ,  Tadao Shoji ,  Sadao Takehara ,  Hiroshi Ogawa ,  Toru Fujisawa ,  Takeshi Kuriyama ,  Kayoko Nakamura

IPC分类号： C07D239/26 ,  C07D241/12 ,  C09K19/34

CPC分类号： C07D239/26 ,  C07D241/12 ,  C09K19/3452

摘要： A 2,5-disubstituted pyrazine derivative and a 2,5-disubstituted pyrimidine derivative of the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 each independently represents a straight-chain or branched alkyl group containing 1 to 20 carbon atoms;X represents a halogen atom; and ##STR2## represents a pyrazine-2,5-diyl or a pyrimidine-2,5-diyl group; each useful as an electrooptical display material are disclosed. Further a liquid crystal composition comprising said compounds as well as a ferroelectric display device wherein said liquid crystal composition is used are disclosed.

公开(公告)号：US5061398A

公开(公告)日：1991-10-29

申请号：US515915

申请日：1990-04-27

申请人： Sadao Takehara ,  Takeshi Kuriyama ,  Kayoko Nakamura ,  Tadao Shoji ,  Toru Fujisawa ,  Masashi Osawa ,  Tamejiro Hiyama ,  Tetsuo Kusumoto ,  Akiko Nakayama ,  Kiyoharu Nishide

发明人： Sadao Takehara ,  Takeshi Kuriyama ,  Kayoko Nakamura ,  Tadao Shoji ,  Toru Fujisawa ,  Masashi Osawa ,  Tamejiro Hiyama ,  Tetsuo Kusumoto ,  Akiko Nakayama ,  Kiyoharu Nishide

IPC分类号： G02F1/13 ,  C07C255/37 ,  C07D307/33 ,  C09K19/34 ,  C09K19/54

CPC分类号： C07D307/33 ,  C09K19/2021 ,  C09K19/3405 ,  C09K2019/3075

摘要： An optically active lactone derivative represented by the following general formula (I): ##STR1## wherein R.sup.1 represents a straight-chain or branched alkyl, alkoxyl, alkanoyloxy, alkoxycarbonyl, alkoxyalkyl, alkoxyalkanoyloxy, or alkoxyalkoxyl group having 1 to 20 carbon atoms or an optically active group of each of the above kinds, R.sup.2 represents a straight-chain or branched alkyl group having 1 to 20 carbon atoms, ##STR2## or trans-1,4-cyclohexylene group of the formula and the asymmetric carbon atoms at the 2- and 4-positions in the lactone ring each independently is of the (S) or (R) configuration, an intermediate therefor, a process for producing the intermediate, a liquid-crystal composition, and a liquid-crystal display device.

公开(公告)号：US5064564A

公开(公告)日：1991-11-12

申请号：US630591

申请日：1990-12-20

申请人： Sadao Takehara ,  Takeshi Kuriyama ,  Toru Fujisawa ,  Kayoko Nakamura ,  Tamejiro Hiyama ,  Kusumoto, Tetsuo ,  Akiko Nakayama

发明人： Sadao Takehara ,  Takeshi Kuriyama ,  Toru Fujisawa ,  Kayoko Nakamura ,  Tamejiro Hiyama ,  Kusumoto, Tetsuo ,  Akiko Nakayama

IPC分类号： C07C255/37 ,  C07C255/46 ,  C07D239/26 ,  C09K19/20 ,  C09K19/30 ,  C09K19/34

CPC分类号： C07D239/26 ,  C07C255/37 ,  C07C255/46 ,  C09K19/20 ,  C09K19/2021 ,  C09K19/3068 ,  C09K19/3463 ,  C07C2101/02 ,  C07C2101/14

摘要： The present invention discloses an optically active compound represented by the following general formula (I): ##STR1## wherein R.sup.1 represents an alkyl, alkoxyl, or alkoxyalkanoyloxy group which has 1 to 18 carbon atoms and may be substituted with fluorine, chlorine, or cyano group; R.sup.2 represents an alkyl group having 1 to 18 carbon atoms; ##STR2## m is 0 or 1; Y represents a single bond, --CH.sub.2 O--, or --COO--; Z represents a single bond or --COO--; and C* and C** each independently represents an asymmetric carbon atom of the (R) and (S) configuration, an intermediate therefor being represented by the following general formula (II): ##STR3## wherein R.sup.2 represents an alkyl group having 1 to 18 carbon atoms, n is 0 or 1, and C* and C** each independently represents an asymmetric carbon atom of the (R) or (S) configuration, a process for producing the intermediate, and a liquid-crystal compound using the optically active compound.

公开(公告)号：US4943386A

公开(公告)日：1990-07-24

申请号：US252926

申请日：1988-10-04

申请人： Sadao Takehara ,  Toru Fujisawa ,  Yoshi Arai ,  Jitsuo Kurokawa

发明人： Sadao Takehara ,  Toru Fujisawa ,  Yoshi Arai ,  Jitsuo Kurokawa

IPC分类号： C09K19/20

CPC分类号： C09K19/2021

摘要： A liquid crystalline compound represented by formula ##STR1## wherein R denotes an alkyl or alkoxy group having 1 to 20 carbon atoms,m and n are each 0 or 1, provided m and n are not 1 at the same time. ##STR2## X and Y each denote a hydrogen atom, a halogen atom or a nitro group, provided X and Y are not hydrogen atoms at the same time, andQ* denotes an optically active group having an asymmetric carbon atom and a linear or cyclic alkyl or alkenyl group which may be substituted by a halogen atom, or the like.

摘要翻译： 由式（I）表示的液晶化合物，其中R表示具有1至20个碳原子的烷基或烷氧基，m和n各自为0或1，条件是m和n不同时为1。 X和Y各自表示氢原子，卤原子或硝基，X和Y不同时为氢原子，Q *表示具有不对称碳原子的光学活性基团， 可以被卤素原子取代的直链或环状的烷基或链烯基等。

公开(公告)号：US4828754A

公开(公告)日：1989-05-09

申请号：US161421

申请日：1988-02-23

申请人： Sadao Takehara ,  Toru Fujisawa ,  Yoshi Arai ,  Jitsuo Kurokawa

发明人： Sadao Takehara ,  Toru Fujisawa ,  Yoshi Arai ,  Jitsuo Kurokawa

IPC分类号： C07C69/773 ,  C09K19/20

CPC分类号： C09K19/2021

摘要： A liquid crystalline compound represented by formula ##STR1## wherein R denotes an alkyl or alkoxy group having 1 to 20 carbon atoms,m and n are each 0 or 1, provided m and n are not 1 at the same time. ##STR2## X and Y each denote a hydrogen atom, a halogen atom or a nitro group, provided X and Y are not hydrogen atoms at the same time, and Q* denotes an optically active group having an asymmetric carbon atom and a linear or cyclic alkyl or alkenyl group which may be substituted by a halogen atom, or the like.

摘要翻译： 由式（I）表示的液晶化合物，其中R表示具有1至20个碳原子的烷基或烷氧基，m和n各自为0或1，条件是m和n不同时为1。 X和Y各自表示氢原子，卤原子或硝基，X和Y不同时为氢原子，Q *表示具有不对称碳原子的光学活性基团， 可以被卤素原子取代的直链或环状的烷基或链烯基等。

公开(公告)号：US5304323A

公开(公告)日：1994-04-19

申请号：US984279

申请日：1992-12-01

申请人： Yoshi Arai ,  Toru Fujisawa ,  Kiyohumi Takeuchi ,  Haruyoshi Takatsu ,  Koichiro Adachi ,  Hiroshi Ogawa ,  Kazunori Maruyama

发明人： Yoshi Arai ,  Toru Fujisawa ,  Kiyohumi Takeuchi ,  Haruyoshi Takatsu ,  Koichiro Adachi ,  Hiroshi Ogawa ,  Kazunori Maruyama

IPC分类号： C09K19/54 ,  G02F1/1334 ,  C09K19/52 ,  G02F1/13

CPC分类号： C09K19/542 ,  G02F1/1334 ,  G02F2001/13345

摘要： A liquid crystal device comprising a pair of substrate, at least one of them being transparent, and a light-control layer supported therebetween, wherein said light-control layer comprises a liquid crystal material showing positive dielectric anisotropy and a transparent solid substance, said liquid crystal material forming a continuous phase, and said transparent solid substance existing in said continuous phase in the form of dispersed particles or a three-dimensional network. The device exhibits a clear threshold voltage, a high fast response time and a highly contrast display with a low applied voltage.

摘要翻译： 一种液晶装置，包括一对基板，其中至少一个是透明的，并且支撑在其间的光控层，其中所述光控层包括显示正介电各向异性的液晶材料和透明固体物质，所述液体 形成连续相的晶体材料，所述透明固体物质以分散颗粒或三维网络的形式存在于所述连续相中。 该器件具有清晰的阈值电压，高的快速响应时间和低施加电压的高对比度显示。