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    A liquid crystal composition
    43.
    发明公开
    A liquid crystal composition 失效
    Flüssigkristallzusammensetzung。

    公开(公告)号：EP0609566A1

    公开(公告)日：1994-08-10

    申请号：EP93121021.5

    申请日：1993-12-28

    申请人： CHISSO CORPORATION

    发明人： Takeshita, Fusayuki ,  Hirose, Taku ,  Terashima, Kanetsugu ,  Sawada, Shinichi

    IPC分类号： C09K19/30 ,  C09K19/50 ,  C09K19/58

    CPC分类号： C09K19/50 ,  C09K19/3001 ,  C09K19/586

    摘要： Liquid crystal composition having a high voltage-holding ratio of liquid crystal element and being almost unchanged in the helical pitch even when subjected to purification treatment with adsorbents or the like,
       which composition is a liquid crystal mixture of an achiral liquid crystal compound of the following formula (IV) with a chiral compound having an adsorptivity to adsorbents, not greater than that of the achiral compound:

    wherein A', B', C' and D' each independently are trans-1,4-cyclohexylene, 1-cyclohexene-1,4-diyl or 1,4-phenylene; g, h and i each are 0 or 1; (g+h+i)≧1 ; X', Y' and Z' each independently are a single bond, -CH₂-CH₂-, -CH=CH- or -C≡C-; R⁷ is C n H 2n+1 -, C n H 2n-1 or C n H 2n+1 OC k H 2k -; R⁸ is C m H 2m+1 -, C m H 2m+1 O-, F, CHF₂O or CF₃O-; n and m each independently are an integer of 1 to 18; k is an integer of 1 to 17; (n+k) is 2 to 18; at least one of X', Y' and Z' is single bond; when ring D' is 1,4-phenylene and R⁸ is F, CHF₂O- or CF₃O-, then H at ortho position as regards R⁸ may be replaced by F; and "Then" g is 1 and ring B' or C' is 1,4-phenylene, when H at the lateral position of the ring may be replaced by F.
    It is preferred in order to exhibit a high voltage-holding ratio that the achiral liquid crystal compound have as a polar group, a functional group (such as F and CF 3 O-) limited to a halogen atom such as F, Cℓ, etc. or an ether bond, besides the C-C bond and the C-H bond.
    As to chiral compounds those having a functional group restricted to only a halogen atom or an ether bond are preferred, in the same aspect, chiral agent compounds having a polar group of -CN group as a fuctional group are unsuitable.

    摘要翻译： 液晶组合物具有高电压保持率的液晶元件，并且即使在用吸附剂等进行纯化处理时几乎没有变化，该组成是以下的非手性液晶化合物的液晶混合物 式（Ⅳ）与对吸附剂具有吸附性的手性化合物不大于非手性化合物：其中A'，B'，C'和D'各自独立地为反式-1,4-亚环己基，1 环己烯-1,4-二基或1,4-亚苯基; g，h和i各自为0或1; （G + H + I）> / = 1; X'，Y'和Z'各自独立地是单键，-CH 2 -CH 2 - ， - CH = CH-或-C≡CENTICALC-; R 7是C n H 2n + 1，C n H 2n-1或C n H 2n + 1 OC k H 2k-; R 8是C m H 2n + 1，C m H 2m + 10，F，CHF 2 O或CF 3 O-; n和m各自独立地为1〜18的整数; k为1〜17的整数。 （n + k）为2〜18; X'，Y'和Z'中的至少一个是单键; 当环D'为1,4-亚苯基且R 8为F，CHF 2 O-或CF 3 O-时，则R 8在邻位的H可被F取代; “然后”g为1，环B'或C'为1,4-亚苯基，当环的横向位置的H可以被F代替时，为了表现出高的电压保持率，优选为 除CC键和CH键之外，非手性液晶化合物具有极性基团，限于诸如F，C 1等卤素原子或醚键的官能团（如F和CF 3 O-）。 对于具有仅限于卤素原子或醚键的官能团的手性化合物是优选的，在同一方面，具有-CN基极性基团的手性试剂化合物作为官能团是不合适的。

    A liquid crystal composition and a liquid crystal display containing it
    44.
    发明公开
    A liquid crystal composition and a liquid crystal display containing it 失效
    Flüssigkristallzusammensetzungund sie enthaltende Anzeigevorrichtung。

    公开(公告)号：EP0571916A1

    公开(公告)日：1993-12-01

    申请号：EP93108348.9

    申请日：1993-05-24

    申请人： Chisso Corporation

    发明人： Hirose, Taku ,  Terashima, Kanetsugu ,  Sawada, Shinichi

    IPC分类号： C09K19/30

    CPC分类号： C09K19/3048 ,  C09K19/3001

    摘要： A liquid crystal composition comprising (1) at least one compound selected from those expressed by the formula (I) and (2) at least one compound selected from those expressed by the formulas (II), (III), (IV) and (V):

    wherein R₁ to R₅ are C₁₋₁₀ alkyl; R₆ and R₇ are C₁₋₁₀ alkyl or alkenyl; X is H or F; X₁ and X₂ are F, -CF₃, -OCF₃, -CHF₂ or -OCHF₂; Y₁ and Y₂ are H or F; Z₁, Z₂ and Z₄ are -COO-, -CH₂CH₂-or a single bond; Z₃, Z₅ and Z₆ are -COO-, -CH₂CH₂-, -C≡C- or a aingle bond; and A is

    which composition is provided with characteristics of high specific resistance, low viscosity while keeping small current consumption, a suitable clearing point and threshold voltage.

    摘要翻译： 一种液晶组合物，其包含（1）选自由式（I）和（2）表示的化合物中的至少一种化合物至少一种选自式（II），（III），（IV）和（IV） V）：其中R1至R5为C1-10烷基; R6和R7是C1-10烷基或烯基; X为H或F; X 1和X 2是F，-CF 3，-OCF 3，-CHF 2或-OCHF 2; Y1和Y2是H或F; Z 1，Z 2和Z 4是-COO - ， - CH 2 CH 2 - 或单键; Z 3，Z 5和Z 6是-COO - ， - CH 2 CH 2 - ， - C-识别的C-或单键; 并且A是，其组成具有高电阻率，低粘度特性，同时保持小的电流消耗，合适的清除点和阈值电压。

    A ferroelectric liquid crystal composition
    46.
    发明公开
    A ferroelectric liquid crystal composition 失效
    一种电磁液晶组合物

    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

    A ferroelectric liquid crystal composition
    47.
    发明公开
    A ferroelectric liquid crystal composition 失效
    铁电液晶组合物

    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。

    Ferroelectric liquid crystal composition
    50.
    发明公开
    Ferroelectric liquid crystal composition 失效
    铁电液晶组成

    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。