摘要:
New compounds useful as constituents of liquid crystal compositions exhibiting a negative dielectric anisotropy are provided, which are 2-cyano-4-halogenophenyl esters expressed by the general formula ##STR1## wherein R represents hydrogen atom or an alkyl group or an alkoxy group of 1 to 10 carbon atoms; ##STR2## each represent either one of ##STR3## l, m and n each represent 0 or 1 and the total of l+m+n is 1, 2 or 3; X represents F or Cl; and Y and Z each represent hydrogen atom or F or Cl.
摘要翻译:提供了作为表现出负介电各向异性的液晶组合物成分的新化合物,它们是由通式(I)表示的2-氰基-4-卤代苯基酯,其中R表示氢原子或烷基或烷氧基 1〜10个碳原子的基团; 每个代表 1,m和n各自表示0或1,并且l + m + n的总和为1,2或3; X表示F或Cl; Y和Z各自表示氢原子或F或Cl。
摘要:
Novel liquid crystal compounds having a large positive dielectric anisotropy value and also a low viscosity and a good stability to heat, light, air and water, and liquid crystal compositions containing the same are provided, which compounds are fluorobenzene derivatives expressed by the general formula ##STR1## wherein n represents 1 or 2, X represents CN or COCH.sub.3, and R represents hydrogen atom or an alkyl group or an alkoxy group each of 1 to 15 carbon atoms.
摘要:
A liquid crystal substance having a high nematic-clearing point and a broad nematic temperature range and yet a low viscosity, and a composition containing the same, are provided, which substance is 4-unsubstituted or substituted-4"-cyano-trans,trans,trans-tercyclohexanes expressed by the general formula ##STR1## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms.
摘要:
A novel liquid crystal compound useful as a component of liquid crystal compositions and a liquid crystal composition containing the same are provided, which compound is a phenoxypropanol ester derivative expressed by the formula ##STR1## wherein R.sup.1 and R.sup.2 each represent an alkyl group or an alkoxy group each of 1 to 15 carbon atoms, F atom, Cl atom or CN group, but either one of R.sup.1 and R.sup.2 is necessarily said alkyl group or alkoxy group: A represents ##STR2## and B represents ##STR3##
摘要:
Novel liquid crystal compounds, 2-cyano-4-halogenophenyl substituted-benzoates suitable as a component constituting a liquid crystal composition which exhibits a negative dielectric anisotropy, and a liquid crystal composition containing the same are provided, which benzoates are expressed by the formula ##STR1## wherein R represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; ##STR2## represents ##STR3## or ##STR4## X and Y each represents H or a halogen atom of F or Cl and at least one of X and Y is necessarily H; and Z represents a halogen atom of F, Cl or Br.
摘要:
A novel 1,4-dipyrimidinylbenzene derivative which is useful as a component constituting a liquid crystal composition which is superior in properties and also physically and chemically stable, as a material for liquid crystal display elements, and a liquid crystal composition containing the same are provided, which derivative is expressed by the formula ##STR1## wherein X represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms, methylthio group or cyano group and Y represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms.
摘要:
A novel pyrimidine derivative which, when used as a component of a liquid crystal composition, is useful for driving a liquid crystal cell containing the composition at low voltages, and a liquid crystal composition containing the same are provided, which pyrimidine derivative is expressed by the formula ##STR1## wherein n represents an integer of 0 or 1; R represents an alkyl or alkoxy group of 1 to 10 carbon atoms; and X.sub.1, X.sub.2 and X.sub.3 each represent hydrogen atom, F, Cl or Br as halogeno group, cyano group or trifluoromethyl group and at least one of X.sub.1, X.sub.2 and X.sub.3 is trifluoromethyl group.
摘要翻译:一种新颖的嘧啶衍生物,当用作液晶组合物的组分时,可用于驱动含有低电压的组合物的液晶盒,并且提供含有该组合物的液晶组合物,哪种嘧啶衍生物由 式其中n表示0或1的整数; R表示1〜10个碳原子的烷基或烷氧基; X 1,X 2,X 3各自表示氢原子,F,Cl或Br作为卤代基,氰基或三氟甲基,X 1,X 2和X 3中的至少一个为三氟甲基。
摘要:
Novel compounds which, when used as a components of liquid crystal compositions, have good compatibility with other components and also have large values of dielectric anisotropy and optical anisotropy, and liquid crystal compositions containing the same are provided, which compounds are 4'-cyano-3'-halogenophenyl 4-(5-substituted-pyrimidin-2-yl)benzoate expressed by the formula ##STR1## wherein R represents an alkyl group of 1 to 10 carbon atoms or --(CH.sub.2).sub.m --O--(CH.sub.2).sub.p --CH.sub.3 wherein m and p each represent an integer of 0 to 8 and m+p.ltoreq.8, and X represents a halogen atom.
摘要:
A novel organic compound usable as a component of liquid crystal compositions having a positive value of dielectric anisotropy and a liquid crystal composition usable as a material for liquid-crystalline display devices operated under a low driving voltage are provided which compound is a benzoic acid ester derivative expressed by the formula ##STR1## wherein R represents an alkyl group of 1 to 10 carbons and X represents ##STR2##
摘要:
Novel liquid crystal compounds having superior properties and liquid crystal compositions containing the same are provided, which compounds are expressed by the general formula ##STR1## wherein R.sub.1 represents an alkyl group or an alkoxy group, each having 1 to 10 carbon atoms and R.sub.2 represents cyano group or an alkyl group having 1 to 10 carbon atoms.