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    • 1. 发明授权
    • Optically active compound and liquid crystal composition containing the compound
    • 含有该化合物的光学活性化合物和液晶组合物
    • US06677475B2
    • 2004-01-13
    • US10046902
    • 2002-01-17
    • Yasumasa NorisueTakakiyo MineMasahiro Johno
    • Yasumasa NorisueTakakiyo MineMasahiro Johno
    • C07C6976
    • C09K19/586C07C69/76Y10T428/10
    • Optically active compounds of the following general formula (1) useful as chiral dopant, wherein n is an integer of 0 to 5, provided that when n is 0, A is a single bond (—) and that when n is 1 to 5, A is a single bond (—), —O—, —COO—, —Cy— or —Cy—COO— in which —Cy— is a trans-1,4-cyclohexylene group, each of X and Y is independently a hydrogen atom or a fluorine atom, B is a single bond (—), —COO—, —COO—Ph— or —Ph—COO— in which —Ph— is a 1,4-phenylene group, and C* is an asymmetric carbon. The chiral dopant of the present invention have a high helical twisting power of at least 9 and suitably have a feature that the helical pitch induced by them decreases in length with an increase in temperature so that they are advantageous for use in a nematic liquid crystal composition.
    • 可用作手性掺杂剂的以下通式(1)的光学活性化合物,其中n为0至5的整数,条件是当n为0时,A为单键( - ),当n为1至5时, A是单键( - ),-O - , - COO - , - C y - 或-C y -COO-,其中-Cy-是反式-1,4-亚环己基,X和Y各自独立地为 氢原子或氟原子,B是单键( - ),-COO-,-COO-Ph-或-Ph-COO-,其中-Ph-是1,4-亚苯基,C *是 不对称碳。 本发明的手性掺杂剂具有至少9的高的螺旋扭转力,并且适当地具有由它们引起的螺旋桨距随温度升高而减小的特征,因此它们有利于用于向列型液晶组合物 。
    • 3. 发明授权
    • Optically active secondary alcohol and process for the production thereof
    • 光学活性二级醇及其生产方法
    • US06239316B1
    • 2001-05-29
    • US09365844
    • 1999-08-03
    • Takakiyo MineTomoyuki Yui
    • Takakiyo MineTomoyuki Yui
    • C07C4310
    • C07C43/13C12P7/02C12P41/004
    • An R-configuration or S-configuration optically active secondary alcohol of the general formula (1), CH3C*H(OH)(CH2)mOCH(CnH2n+1)2  (1) wherein C* is an asymmetric carbon atom, m is an integer of 1 to 3, and n is an integer of 1 to 3, and a process for the production thereof, comprising optical resolution of a corresponding racemic alcohol by asymmetric trans-esterification, specifically using a lipase derived from Candida antarcia microorganism. The present invention can provide the novel optically active secondary alcohol having a methyl group on an asymmetric carbon and an alkoxy terminal having branched alkyl chains formed of the same numbers of carbon atoms, and an economical and simple process for the production thereof.
    • 通式(1)的R构型或S-构型光学活性仲醇,其中C *为不对称碳原子,m为1〜3的整数,n为1〜3的整数, 其制备方法包括通过不对称反式酯化反应相应的外消旋醇的光学拆分,特别是使用衍生自念珠菌(Candida antarcia)微生物的脂肪酶。 本发明可以提供在不对称碳上具有甲基的新颖的光学活性仲醇和具有相同数目的碳原子形成的支链烷基链的烷氧基末端,以及其经济且简单的制备方法。
    • 8. 发明授权
    • Method for purifying liquid crystal
    • 液晶纯化方法
    • US6056892A
    • 2000-05-02
    • US34403
    • 1998-03-04
    • Yasue YoshiokaMasahiro JohnoTomoyuki YuiTakakiyo Mine
    • Yasue YoshiokaMasahiro JohnoTomoyuki YuiTakakiyo Mine
    • C07C67/56C09K19/02C09K19/20C09K19/52B01D15/00
    • C09K19/0266C07C67/56C09K19/00C09K19/2021
    • A process for purifying an anti-ferroelectric liquid crystal or a ferrielectric liquid crystal, which comprises the following steps 1 to 4,step 1: preparing a liquid crystal solution of an anti-ferroelectric liquid crystal or a ferrielectric liquid crystal to be purified in an aromatic hydrocarbon solvent,step 2; bringing the liquid crystal solution into contact with at least one adsorbent selected from the group consisting of zeolite, alumina and silica gel to separate the liquid crystal solution from the adsorbent,step 3; precision-filtering the resultant liquid crystal solution, andstep 4; removing the solvent from an obtained filtrate and recovering a purified liquid crystal,according to which process, there can be easily obtained a high-purity liquid crystal which shows a specific resistance value of at least 5.times.10.sup.12 .OMEGA..multidot.cm and a small thermal decomposition ratio, and which is therefore suitable as a raw material for a liquid crystal display device.
    • 一种用于纯化反铁电液晶或电介质液晶的方法,其包括以下步骤1至4,步骤1:制备待纯化的反铁电液晶或电介质液晶的液晶溶液 芳烃溶剂,步骤2; 使液晶溶液与选自沸石,氧化铝和硅胶的至少一种吸附剂接触,以将液晶溶液与吸附剂分离,步骤3; 对所得液晶溶液进行精密过滤,步骤4; 从所得滤液中除去溶剂并回收纯化的液晶,根据该方法,可以容易地获得显示比电阻值为至少5×10 12欧米伽×厘米并具有小的热分解比的高纯度液晶,以及 因此适合作为液晶显示装置的原料。
    • 9. 发明授权
    • Optically active compound and liquid crystal composition containing the compound
    • 含有该化合物的光学活性化合物和液晶组合物
    • US06835427B2
    • 2004-12-28
    • US10780705
    • 2004-02-19
    • Yuki MotoyamaTakakiyo MineMasahiro Johno
    • Yuki MotoyamaTakakiyo MineMasahiro Johno
    • C09K1958
    • C09K19/586Y10T428/10
    • An optically active compound containing 5,5′,6,6′,7,7′,8,8′-octahydro-1,1′-bi-2-naphthol of the general formula (1) as an asymmetric source, wherein n is an integer of 1 to 10, Y is a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a phenyl group, a phenyl group substituted with an alkyl group having 1 to 5 carbon atoms or a phenyl group substituted with an alkoxy group having 1 to 4 carbon atoms, X is a single bond (—), —OOC— or —OCH2—, and each of A and B is a substituent formed by specifically combining rings selected from cyclohexane, benzene, pyrimidine, naphthalene, dioxane, etc., including mutual bonding forms of rings so that the substituent has 1 to 4 rings, the optically active compound characteristically having a large helical twisting power (HTP) of 50 or more and being useful as a chiaral dopant, the chiral dopant being capable of adjusting a helical pitch when only added in a small amount, so that the deterioration of performances of a base liquid crystal can be prevented.
    • 一种含有作为不对称来源的通式(1)的5,5',6,6',7,7',8,8'-八氢-1,1'-双-2-萘酚的光学活性化合物,其中 n为1〜10的整数,Y为氢原子,碳原子数为1〜5的烷基,苯基,被碳原子数为1〜5的烷基取代的苯基或被 具有1至4个碳原子的烷氧基,X是单键( - ),-OOC-或-OCH 2 - ,A和B各自是通过特别结合选自环己烷,苯,嘧啶,萘, 二恶烷等,包括环的相互键合形式,使得取代基具有1至4个环,旋光性化合物特征在于具有50或更大的大螺旋扭转力(HTP)并且可用作芝麻掺杂剂,手性掺杂剂 能够在仅添加少量时调节螺距,从而可以降低基极液晶的性能 防止了
    • 10. 发明授权
    • Optically active compound and liquid crystal composition containing the compound
    • 含有该化合物的光学活性化合物和液晶组合物
    • US06730371B2
    • 2004-05-04
    • US10118431
    • 2002-04-09
    • Yasumasa NorisueTakakiyo MineMasahiro Johno
    • Yasumasa NorisueTakakiyo MineMasahiro Johno
    • C09K1912
    • C09K19/586Y10T428/10
    • An optically active compound of the following general formula (1) useful as a chiral dopant, and use thereof, wherein each of X and Y is independently a hydrogen atom or a fluorine atom, R is (C2H5)2CHCH2C*H(CH3)— or Ph—C*H(CH3)—, A is —Ph(W)—COO—Ph—, —Ph—Ph—COO—, —Cy—COO—Ph—, —Ph(W)—OOC—Ph—COO—, —Ph(W)—OOC—Cy—COO—, —Ph(W)—OOC—Np—COO— or —Np—OOC—, in which Ph— is a phenyl group, —Ph— is a 1,4-phenylene group, —Ph(W)— is —Ph— or monofluoro substituted —Ph—, Cy— is a trans-1,4-cyclohexylene group and —Np— is a 2,6-naphthylene group, and C* is an asymmetric carbon. The optically active compound of the present invention has a large helical twisting power (HTP) of at least 14 and suitably has the property that its induced helical pitch decreases in length with an increase in temperature, so that it has an excellent value as a chiral dopant for a nematic liquid crystal composition.
    • 可用作手性掺杂剂的以下通式(1)的光学活性化合物及其用途,其中X和Y各自独立地为氢原子或氟原子,R为(C 2 H 5)2 CHCH 2 C * H(CH 3) - 或Ph-C * H(CH 3) - ,A是-Ph(W)-COO-Ph-,-Ph-Ph-COO-,-Cy-COO-Ph-,-Ph(W) COO-,-Ph(W)-OOC-Cy-COO-,-Ph(W)-OOC-Np-COO-或-Np-OOC-,其中Ph-是苯基,-Ph-是1 ,4-亚苯基,-Ph(W) - 是-Ph-或单氟取代的-Ph-,Cy-是反式-1,4-亚环己基,-Np-是2,6-亚萘基,C *是不对称碳。本发明的光学活性化合物具有至少14的大的螺旋扭转功率(HTP),并且适当地具有随着温度升高其诱导的螺距随长度而减小的性质,使得其具有 作为向列型液晶组合物的手性掺杂剂的优异值。