摘要:
Novel chiral smectic liquid crystalline ester compounds having a superior stability and exhibiting a high response rate when used in the form of display elements and chiral smectic mixtures containing at least one of these compounds are provided, which compounds are expressed by the formula ##STR1## wherein n is an integer of 2 to 16; l is 0, 1 or 2; m is 1 or 2 under the condition of l+m.gtoreq.2; X represents methylene group --CH.sub.2 -- or single bond when l is zero, methylene group --CH.sub.2 -- or ether linkage --O-- when l=1 or ether linkage --O-- when l=2; and Y represents R, OR, --COR, --OCOR, --OCOOR or --COOR wherein R throughout represents an alkyl group of 1 to 18 carbon atoms; and asterisk * shows an optically active carbon atom.
摘要:
An optically active liquid crystal compound having a large spontaneous polarization value and a chiral smectic liquid crystal composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein R.sup.1 and R.sup.2 each represent an alkyl group of 4 to 18 carbon atoms and l represents 1 or 0.
摘要:
A novel optically active liquid crystal compound and a liquid crystal composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein R.sub.1 is alkyl or alkoxy of 4-18 C; R.sub.2 is alkyl, alkoxy, acyl or alkoxymethyl of 4-18C; but either one of R.sub.1 or R.sub.2 is an optically active group; either one of X.sub.1 or X.sub.2 is halogen atom and the other is H; m and n each are 0 or 1 and m+n is 0 or 1.
摘要:
A novel liquid-crystalline, optically active compound exhibiting a chiral smectic phase and a chiral smectic liquid crystal composition containing the same are provided, which liquid-crystalline, optically active compound is a compound expressed by the formula ##STR1## wherein X represents a linear chain alkyl group or a linear chain alkoxy group, each of 4 to 18 carbon atoms, or a halogen atom, R* represents an optically active alkyl group of 4 to 18 carbon atoms and ##STR2## shows that the oxygen atom can be bonded to either nitrogen atom.
摘要:
A novel chiral liquid crystal compound having an optically active group which affords a superior response rate when used as a liquid crystal display element, and a liquid crystal composition containing the same are provided, which chiral liquid crystal compound is expressed by the formula ##STR1## wherein R represents an alkyl group of 1 to 18 carbon atoms; R* represents an optically active alkyl group of 4 to 15 carbon atoms; X represents single bond, --O--, ##STR2## Y represents --CH.sub.2 O-- or --OCH.sub.2 --; Z represents single bond, --O--, ##STR3## and m and n each represent 1 or 2.
摘要:
A novel optically active compound suitable for use in a display mode utilizing a ferroelectric liquid crystal, and a chiral smectic liquid crystal composition containing the same are provided, which novel optically active compound is expressed by the formula ##STR1## wherein R represents an alkyl group of 2 to 15 carbon atoms; X represents CN group or a halogen atom; Y and Z each represent a halogen atom or hydrogen atom, but either one of Y and Z is hydrogen atom; l is 1 or 2; m is 0 or 1; and a symbol * shows that the carbon atom having this symbol attached thereto constitutes an optically active center.
摘要:
A novel chiral liquid crystal compound having an optically active group which affords a superior response rate when used as a liquid crystal display element, and a liquid crystal composition containing the same are provided, which chiral liquid crystal compound is expressed by the formula ##STR1## wherein R represents an alkyl group of 1 to 18 carbon atoms; R* represents an optically active alkyl group of 4 to 15 carbon atoms; X represents single bond, --O--, ##STR2## Y represents --CH.sub.2 O-- or --OCH.sub.2 --; Z represents single bond, --O--, ##STR3## and m and n each represent 1 or 2.
摘要:
A novel optically active liquid crystal compound and a liquid crystal composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein R.sub.1 is alkyl or alkoxy of 4-18 C; R.sub.2 is alkyl, alkoxy, acyl or alkoxymethyl of 4-18 C; but either one of R.sub.1 or R.sub.2 is an optically active group; either one of X.sub.1 or X.sub.2 is halogen atom and the other is H; m and n each are 0 or 1 and m+n is 0 or 1.
摘要:
A novel, superior, optically active liquid crystal compound exhibiting a smectic C* phase, and a liquid crystal composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein X represents --CH.sub.2 O-- or --OCH.sub.2 --; Y represents --COO-- or --OCO--; and either one of R.sup.1 or R.sup.2 represents an optically active alkyl group, alkoxy group or alkoxycarbonyl group and the other represents a non-optically-active alkyl group or alkoxy group each of 4 to 18 carbon atoms.
摘要翻译:提供了表现出近晶C *相的新型优异的光学活性液晶化合物和含有它们的液晶组合物,该化合物由下式表示:其中X表示-CH2O-或-OCH2-; Y表示-COO-或-OCO-; R 1或R 2中的任一个表示光学活性的烷基,烷氧基或烷氧基羰基,另一个表示4〜18个碳原子的非光学活性的烷基或烷氧基。
摘要:
Provided is a liquid-crystalline, polymerizable vinyl ketone compound of formula (1): Preferably, R1 is hydrogen, halogen, —CN, —CF3, —CF2H, —CFH2, —OCF3, —OCF2H, or alkyl, alkoxy, alkoxyalkyl or alkenyl having from 1 to 10 carbon atoms; R2, R3 and R5 are hydrogen; A1 to A4 are independently 1,4-cyclohexylene, 1,4-cyclohexenylene or 1,4-phenylene where any hydrogen may be substituted with halogen; Z1 to Z3 are independently a single bond, —(CH2)2—, —CH═CH—, —CF═CF—, —OCF2— or —CF2O—; Z4 is a single bond, —(CH2)3— or —(CH2)4—; m, n and q are independently 0, 1 or 2. The uppermost temperature of the liquid crystalline phase of the compound is high, and the compound has good compatibility with other compounds and has the necessary characteristics such as optical anisotropy. Also provided are a polymer having many good characteristics of transparency, mechanical strength, coatability, solubility, crystallinity, shrinkage, water permeability, water absorption, melting point, glass transition point, clearing point and chemical resistance; an optically-anisotropic material of the polymer; a liquid-crystal display device that comprises the polymer; and a method for producing the liquid-crystalline compound.
摘要翻译:提供式(1)的液晶可聚合乙烯基酮化合物:优选R 1是氢,卤素,-CN,-CF 3,-CF 3, H 2,-CF 2 H 2,-OCF 3,-OCF 2 H或烷基,烷氧基,烷氧基烷基或 具有1至10个碳原子的烯基; R 2,R 3和R 5是氢; A 4 S 4独立地是1,4-亚环己基,1,4-亚环己基或1,4-亚苯基,其中任何氢可以被卤素取代; Z 1至Z 3独立地为单键, - (CH 2)2 - , - CH- CH-,-CF-CF-,-OCF 2 - 或-CF 2 O-; Z 4是单键, - (CH 2 CH 2)3 - 或 - (CH 2 2 N) 4 SUB> - ; m,n和q独立地为0,1或2.化合物的液晶相的最高温度高,并且该化合物与其它化合物具有良好的相容性,并且具有必要的光学各向异性特性。 还提供了具有透明性,机械强度,可涂布性,溶解性,结晶度,收缩率,透水性,吸水性,熔点,玻璃化转变点,清除点和耐化学性等许多良好特性的聚合物。 聚合物的光学各向异性材料; 包含聚合物的液晶显示装置; 和液晶化合物的制造方法。