公开(公告)号：EP0411610B1

公开(公告)日：1995-01-04

申请号：EP90114769.4

申请日：1990-08-01

申请人： Chisso Corporation

发明人： Terashima, Kanetsugu ,  Ichihashi, Mitsuyoshi ,  Kikuchi, Makoto ,  Murashiro, Katsuyuki

IPC分类号： C09K19/46

CPC分类号： C09K19/42 ,  C09K19/46

公开(公告)号：EP0562627A1

公开(公告)日：1993-09-29

申请号：EP93105049.6

申请日：1993-03-26

申请人： Chisso Corporation

发明人： Murashiro, Katsuyuki ,  Kikuchi, Makoto ,  Saito, Shinichi

IPC分类号： C09K19/20 ,  C09K19/46 ,  C09K19/02 ,  C09K19/34 ,  C09K19/12 ,  C09K19/42 ,  C09K19/44

CPC分类号： C09K19/0266 ,  C09K19/2021 ,  C09K19/46

摘要： An antiferroelectric liquid crystal composition comprising a first component comprising at least one compound expressed by the formula (I) and exhibiting no antiferroelectric phase and a second component comprising at least one compound expressed by the formula (II) and exhibiting an antiferroelectric phase, the contents of the first component and the second component being respectively 1 to 40% and 60 to 99%, based upon the total weight of the two components:

in the formula (I), R¹ is 1-18C linear alkyl or alkoxy; R² is 1-18C alkyl or alkoxy; k, ℓ, m and n are 0 or 1; (k+ℓ) and (m+n) are 1 or 2, (k+ℓ)+(m+n) are 2 or 3; X is -OCH₂-, -CH₂O-, -COO-, -OCO- or single bond; 6-membered rings A, B, C and D are 1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl, pyradine-2,5-diyl or pyridazine-3,6-diyl, one of the side-positioned hydrogen atoms of which may be replaced by halogen atom or CN, and
   in the formula (II), R³ is 1-18C linear alkyl or alkoxy; R⁴ is 2-18C alkyl or alkoxy; p, q, t and u are 0 or 1; (p+q) and (t+u) each are 1 or 2; (p+q)+(t+u) are 2 or 3; j is 0 or 1; Z is -COO-, -OCO-, -OCH₂-, -CH₂O- or single bond; Y is -CH₃; 6-membered rings E, F, G and H are 1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl, pyradine-2,5-diyl or pyridazine-3,6-diyl; * shows asymmetric carbon atom.
Effectiveness:
An antiferroelectric liquid crystal composition having the threshold voltage lowered at the time of transition from the antiferroelectric phase to ferroelectric phase accompanying the electric field impression in the antiferroelectric phase is provided, and a lightswitching element which has a good contrast and can effect a tristable switching is obtained using the above composition.

摘要翻译： 一种反铁电液晶组合物，其包含包含至少一种由式（I）表示的化合物并且不显示反铁电相的第一组分和包含至少一种由式（II）表示的化合物并表现出反铁电相的第二组分，其含量 的第一组分和第二组分分别为1至40％和60至99％，基于两种组分的总重量：式（I）中的，R 1为1-18℃直链烷基 或烷氧基; R 2是1-18C烷基或烷氧基; k，l，m和n为0或1; （k + 1）和（m + n）为1或2，（k + 1）+（m + n）为2或3; X是-OCH 2 - ， - CH 2 O-，-COO-，-OCO-或单键; 6元环A，B，C和D是1,4-亚苯基，吡啶-2,5-二基，嘧啶-2,5-二基，吡啶-2,5-二基或哒嗪-3,6-二基， 其中一个位于其上的氢原子可以被卤素原子或CN代替，在式（II）中，R 3是1-18C直链烷基或烷氧基; R 4是2-18C烷基或烷氧基; p，q，t和u分别为0或1; （p + q）和（t + u）分别为1或2; （p + q）+（t + u）为2或3; j为0或1; Z是-COO - ， - OCO - ， - OCH 2 - ， - CH 2 O-或单键; Y为-CH 3; 6元环E，F，G和H是1,4-亚苯基，吡啶-2,5-二基，嘧啶-2,5-二基，吡啶-2,5-二基或哒嗪-3,6-二基; *表示不对称碳原子。 有效性：提供了在反铁电相中伴随电场印象从反铁电相转变为铁电相时阈值电压降低的反铁电液晶组合物，以及具有良好对比度并可实现三重态的光开关元件 使用上述组成获得切换。

公开(公告)号：EP0298702B1

公开(公告)日：1992-09-16

申请号：EP88306116.0

申请日：1988-07-05

申请人： Chisso Corporation

发明人： Terashima, Kanetsugu ,  Ichihashi, Mitsuyoshi ,  Kikuchi, Makoto ,  Takeshita, Fusayuki ,  Furukawa, Kenji

IPC分类号： C09K19/46

CPC分类号： C09K19/3463 ,  C09K19/46

公开(公告)号：EP0458087A3

公开(公告)日：1992-04-01

申请号：EP91106830.2

申请日：1991-04-26

申请人： Chisso Corporation

发明人： Murashiro, Katsuyuki ,  Kikuchi, Makoto ,  Terashima, Kanetsugu

IPC分类号： C09K19/34 ,  C09K19/42 ,  C09K19/44

CPC分类号： C07D239/26 ,  C09K19/3463

摘要： A ferroelectric liquid crystal composition having high speed response properties and exhibiting SC * phase within a broad temperature range including room temperature and a light-switching element using the composition are provided, which composition comprises the following components, A, B and C, each in a specified proportion:
Component A has the formula
wherein
R 1 and R 2 are same or different linear or branched alkyl, alkoxy or alkanoyloxy of 1-18C, X is H, halogen or CN, t, m and n are 0 or 1 and (ℓ + m + n) is 1 or 2, and has smectic C phase; Component B has the formula

公开(公告)号：EP0427195A3

公开(公告)日：1992-03-18

申请号：EP90121204.3

申请日：1990-11-06

申请人： Chisso Corporation

发明人： Terashima, Kanetsugu ,  Kikuchi, Makoto ,  Murashiro, Katsuyuki

IPC分类号： C09K19/34 ,  C09K19/44 ,  C09K19/42

CPC分类号： C09K19/46 ,  C09K19/3441 ,  C09K19/42 ,  C09K19/44

摘要： A ferroelectric liquid crystal composition comprising achiral smectic liquid crystal compound(s) and optically active compounds and having high speed response properties and exhibiting Sc * phase within a broad temperature range including room temperature, and a light-switching element containing the above composition are provided, which composition comprises the following components A, B and C in 50-91%, 4-30% and 5-20%, each by weight, respectively: component A: at least one of compounds of the formula (A) having smectic C phase

R¹ and R² each are same or different, linear or branched alkyl, alkoxy or alkanoyloxy each of 1-18C, X is H, halogen or CN, ℓ, m and n each one 1 or 2 and the sum of ℓ, m and n is 1 or 2, component B: at least one of optically active compounds of the formula (B):

R³ is a linear or branched alkyl or alkoxy of 1-18C, R⁴ is a linear or branched alkyl of 2-18C or a linear or branched alkoxy of 1-18C, Y is H, halogen or CN, k is 0 or 1 and * is asymmetric C, the compounds having the same sense of spontaneous polarization (Ps) in chiral smectic C phase, induced when dissolved in smectic C liquid crystal; and component C: at least one of optically active compounds of the formula

R⁵ is a linear or branched alkyl or alkoxy of 1-18C, R⁶ is a linear or branched alkyl of 2-18C or a linear or branched alkoxy of 1-18C, Z is H, halogen or CN and * is asymmetric C,
   the compounds having the same sense of Ps in chiral smectic C phase, induced when dissolved in smectic C liquid crystal, as that of compounds of component B.

摘要翻译： 提供一种铁电液晶组合物，其包含非手性近晶相液晶化合物和光学活性化合物，并且具有高速响应性并且在包括室温在内的宽温度范围内呈现Sc *相，以及含有上述组成的光开关元件 该组合物分别包含以重量计分别为50-91％，4-30％和5-20％的以下组分A，B和C：组分A：至少一种具有层状结构的式（A）化合物 C相R 1和R 2各自相同或不同，各为1-18C的直链或支链烷基，烷氧基或链烷酰氧基，X为H，卤素或CN，l，m和n各自为1或2，l，m 组分B：至少一种式（B）的光学活性化合物：R 3是1-18C的直链或支链烷基或烷氧基，R 4是2-18C的直链或支链烷基或 1-18C的直链或支链烷氧基，Y是H，卤素或CN，k是0或1，并且*是不对称的 C，当溶解在层列C液晶中时，在手性层列C相中具有相同自发极化（Ps）感的化合物; 和组分C：至少一种式R 5的光学活性化合物是1-18C的直链或支链烷基或烷氧基，R 8是2-18C的直链或支链烷基或1-18C的直链或支链烷氧基， Z是H，卤素或CN，并且*是不对称C，这些化合物在手性层列C相中具有与在组分B的化合物中溶解在层晶C液晶中时诱导的Ps相同的意义。

公开(公告)号：EP0371448A3

公开(公告)日：1991-07-03

申请号：EP89121909.9

申请日：1989-11-28

申请人： Chisso Corporation

发明人： Terashima, Kanetsugu ,  Ichihashi, Mitsuyoshi ,  Kikuchi, Makoto ,  Takeshita, Fusayuki ,  Furukawa, Kenji

IPC分类号： C09K19/04 ,  C09K19/42 ,  C09K19/34

CPC分类号： C09K19/46 ,  C09K19/04 ,  C09K19/3441 ,  C09K19/3444 ,  C09K19/3455 ,  C09K19/3463 ,  C09K19/42

摘要： The present invention is directed to a ferroelectric liquid crystal composition having quick response properties and assuming a smectic C* phase in an extensive temperature range inclusive of room temperature, and an optical switching element having a quick response property containing this composition. The ferroelectric liquid crystal composition is here disclosed which comprises at least one chiral compound (liquid crystal component A) having an optical activity site represented by the formula (A)
wherein R¹ is a straight-chain or branched alkyl group having 2 to 18 carbon atoms or a straight-­chain or branched alkoxy group having 1 to 18 carbon atoms, and * indicates an asymmetric carbon atom,
and at least one non-chiral compound (liquid crystal component B) having a smectic C phase (hereinafter referred to as "S C phase"; which shall apply in the following), an S I phase, an S F phase, an S G phase, an S H phase, an S J phase or an S K phase.

公开(公告)号：EP0421012A1

公开(公告)日：1991-04-10

申请号：EP89118516.7

申请日：1989-10-05

申请人： Chisso Corporation

发明人： Ichihashi, Mitsuyoshi ,  Terashima, Kanetsugu ,  Kikuchi, Makoto ,  Takeshita, Fusayuki ,  Furukawa, Kenji

IPC分类号： C09K19/20 ,  C09K19/46

CPC分类号： C09K19/20 ,  C09K19/2021 ,  C09K19/46

摘要： A ferroelectic smectic C liquid crystal mixture and a display element having a quick electrooptical response and a good memory property are provided, the ferroelectric mixture having a Ps of 60 nC/cm2 or more and a tilt angle of 24° or more and comprising

(A) a first component comprising at least one optically active compound expressed by the formula
wherein t and m are 0 or 1, both are not 1; n is an integer of 3 to 8; X and Y are H, F, Cℓ, or CN, both X and Y are not H; A is -COO- or -OCO-; and R is C3-18 alkyl or alkoxy, and
(B) a second component comprising at least one optically active compound expressed by the formula
wherein t, m, n and R are as defined above; and A is -COO-, -OCO-, -CH 2 0- or -OCH 2 -, a total content of the first and second components being 60 mol% or more in the mixture.

摘要翻译： 本发明提供铁电混合物具有60nC / cm 2以上的Ps和24°以上的倾斜角的铁电混合物，所述铁电混合物具有快速的电光响应和良好的记忆性能， ）包含至少一种由下式表示的光学活性化合物的第一组分，其中t和m为0或1，二者都不为1; n是3至8的整数; X和Y是H，F，Cl或CN，X和Y都不是H; A是-COO-或-OCO-; 和（B）包含至少一种由下式表示的光学活性化合物的第二组分，其中t，m，n和R如上所定义; A为-COO - ， - OCO - ， - CH 2 O-或-OCH 2 - ，混合物中第一和第二组分的总含量为60摩尔％或更多。

公开(公告)号：EP0353708A3

公开(公告)日：1991-03-20

申请号：EP89114182.2

申请日：1989-08-01

申请人： Chisso Corporation

发明人： Kikuchi, Makoto ,  Takeshita, Fusayuki ,  Ichihashi, Mitsuyoshi ,  Terashima, Kanetsugu ,  Furukawa, Kenji

IPC分类号： C09K19/46

CPC分类号： C09K19/20 ,  C09K19/2021 ,  C09K19/46

摘要： The present invention provides a ferroelectric liquid crystal composition having good orientation properties, and quick response property wherein the phase transition series of the composition assumes an order of isotropic liquid → cholesteric phase → chiral smectic C phase starting from the high temperature, and the S C * phase is exhibited in a wide temperature range including room temperature. Said composition comprises - a component A of a compound of formula:
and/or a compound
- a component B of a compound of the formula:
- a component C of a compound of the formula:
and
- a component D of a compound of the formula:
wherein R¹ and R² represent each an alkyl group having 1 to 18 carbon atoms; R⁴, R⁵, R⁷ and R⁸ represent each an alkyl group or alkoxy group having 1 to 18 carbon atoms, x represents
- O or -O -, Y, and Z represent each a hydrogen atom, or a halogen atom, n is an integer of 0 to 10, and * indicates an asymmetric carbon atom.

公开(公告)号：EP0353708A2

公开(公告)日：1990-02-07

申请号：EP89114182.2

申请日：1989-08-01

申请人： Chisso Corporation

发明人： Kikuchi, Makoto ,  Takeshita, Fusayuki ,  Ichihashi, Mitsuyoshi ,  Terashima, Kanetsugu ,  Furukawa, Kenji

IPC分类号： C09K19/46

CPC分类号： C09K19/20 ,  C09K19/2021 ,  C09K19/46

摘要： The present invention provides a ferroelectric liquid crystal composition having good orientation properties, and quick response property wherein the phase transition series of the composition assumes an order of isotropic liquid → cholesteric phase → chiral smectic C phase starting from the high temperature, and the S C * phase is exhibited in a wide temperature range including room temperature. Said composition comprises - a component A of a compound of formula:
and/or a compound
- a component B of a compound of the formula:
- a component C of a compound of the formula:
and
- a component D of a compound of the formula:
wherein R¹ and R² represent each an alkyl group having 1 to 18 carbon atoms; R⁴, R⁵, R⁷ and R⁸ represent each an alkyl group or alkoxy group having 1 to 18 carbon atoms, x represents

- O or -O -, Y, and Z represent each a hydrogen atom, or a halogen atom, n is an integer of 0 to 10, and * indicates an asymmetric carbon atom.

摘要翻译： 本发明提供了具有良好取向性和快速响应性的铁电液晶组合物，其中组合物的相变系列从高温开始呈现各向同性液体→胆甾醇相→手性近晶C相的顺序，并且SC * 相在包括室温的宽温度范围内展现。 所述组合物包含 - 下式化合物的组分A和/或化合物 - 下式化合物的组分B： - 下式化合物的组分C和 - 下式化合物的组分D： 式：其中R 1和R 2分别代表具有1-18个碳原子的烷基; R 4，R 5，R 6和R 8分别代表具有1-18个碳原子的烷基或烷氧基，x代表-O或-O-，Y和Z代表氢原子或卤素原子，n是整数 为0至10，并且*表示不对称碳原子。

公开(公告)号：EP0325228A2

公开(公告)日：1989-07-26

申请号：EP89100794.0

申请日：1989-01-18

申请人： Chisso Corporation

发明人： Takeshita, Fusayuki ,  Terashima, Kanetsugu ,  Ichihashi,Mitsuyoshi ,  Kikuchi, Makoto ,  Furukawa, Kenji

IPC分类号： C09K19/34

CPC分类号： C09K19/42 ,  C09K19/3444 ,  C09K19/3458 ,  C09K19/46

摘要： A smectic liquid crystal mixture comprising base substance(s) and exhibiting at least one of achiral SC phase and the like, and having at least one of SC phase and the like, which mixture is useful for ferroelectric liquid crystal materials having high-speed response and also has a low melting point and smectic C phase within a broad temperature range, and liquid crystal materials using the mixture are provided,
which mixture comprises at least one member of pyridine compounds of the formula
wherein R¹ and R² each are 1-18C alkyl and X is H or halogen, and at least one member of pyrimidine compounds of the formula
wherein R³ and R⁴ each are 1-18C alkyl or alkoxy and
is

摘要翻译： 包含基础物质并显示出非手性SC相等至少一种的层状液晶混合物，并且具有SC相等中的至少一种，该混合物可用于具有高速响应的铁电液晶材料 并且在宽温度范围内也具有低熔点和近晶C相，并且提供使用该混合物的液晶材料，该混合物包含至少一种式CHEM的吡啶化合物，其中R 1和R 式中，R 3和R 4各自为1-18个碳原子的烷基或烷氧基，并且其中R 1和R 2各自为1-18个碳原子， CHEM>是