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    • 3. 发明授权
    • Diene derivative
    • 二烯衍生物
    • US5609791A
    • 1997-03-11
    • US450805
    • 1995-05-25
    • Atsuko FujitaShuichi MatsuiYuichi OnjiMakoto UshiodaYasuyuki Goto
    • Atsuko FujitaShuichi MatsuiYuichi OnjiMakoto UshiodaYasuyuki Goto
    • C07C13/28C07C22/08C07C25/24C07C43/188C07C43/225C07C255/50C09K19/02C09K19/04C09K19/30C09K19/42
    • C09K19/3003C07C13/28C07C22/08C07C25/24C07C255/50C07C43/188C07C43/225C09K19/0208C09K19/0403C07C2101/14C09K2019/0407C09K2019/0444C09K2019/3021
    • A novel liquid crystal material having a carbon chain containing a conjugated diene as a terminal substituent of the molecule and exhibiting superior characteristics is provided, which is a diene derivative expressed by the formula (I) ##STR1## wherein R and R' each independently represent 1-5C alkyl; A and B each independently represent 1,4-cyclohexylene or 1,4-phenylene; n is 0 or 1; m is an integer of 0 to 2; X and X' each independently represent H atom or F atom when A is 1,4-phenylene or represent H atom when A is 1,4-cyclohexylene; Y is alkyl, halogen or CN, alkoxy, methyl group substituted by 1-3 halogen atoms or trihaloalkoxy when A is 1,4-phenylene, or represent alkyl, alkoxy, methyl group substituted by 1-3 halogen atoms or trihaloalkoxy when A is 1,4-cyclohexylene; and R and R' are not simultaneously alkyl chain of 4 or more carbon atoms.The compound of the present invention has a generally usable viscosity and a high NI point and a high elastic constant ratio; hence the liquid crystal composition, particularly the liquid crystal composition for STN, containing the compound of the present invention exhibits improved characteristics as compared with the conventional ones.
    • 提供了具有含有共轭二烯作为分子的末端取代基并表现出优异特性的碳链的新型液晶材料,其为由式(I)表示的二烯衍生物,其中R和R' 各自独立地表示1-5C烷基; A和B各自独立地表示1,4-亚环己基或1,4-亚苯基; n为0或1; m为0〜2的整数; 当A为1,4-亚苯基时,X和X'各自独立地表示H原子或F原子,或当A为1,4-亚环己基时,表示H原子; 当A为1,4-亚苯基时,Y为烷基,卤素或CN,烷氧基,被1-3个卤素原子或三卤代烷氧基取代的甲基,或代表烷基,烷氧基,被1-3个卤素原子取代的甲基或三卤代烷氧基,当A为 1,4-亚环己基; 并且R和R'不是同时为4个或更多个碳原子的烷基链。 本发明的化合物具有通常可用的粘度和高的NI点和高弹性常数比; 因此,与现有技术相比,含有本发明化合物的液晶组合物,特别是STN用液晶组合物显示出改善的特性。
    • 4. 发明授权
    • Diene derivative
    • 二烯衍生物
    • US5449810A
    • 1995-09-12
    • US41184
    • 1993-04-01
    • Atsuko FujitaShuichi MatsuiYuichi OnjiMakoto UshiodaYasuyuki Goto
    • Atsuko FujitaShuichi MatsuiYuichi OnjiMakoto UshiodaYasuyuki Goto
    • C07C13/28C07C22/08C07C25/24C07C43/188C07C43/225C07C255/50C09K19/02C09K19/04C09K19/30C09K19/42
    • C09K19/3003C07C13/28C07C22/08C07C25/24C07C255/50C07C43/188C07C43/225C09K19/0208C09K19/0403C07C2101/14C09K2019/0407C09K2019/0444C09K2019/3021
    • A novel liquid crystal material having a carbon chain containing a conjugated diene as a terminal substituent of the molecule and exhibiting superior characteristics is provided, which is a diene derivative expressed by the formula (I) ##STR1## wherein R and R' each independently represent 1-5C alkyl; A and B each independently represent 1,4-cyclohexylene or 1,4-phenylene; n is 0 or 1; m is an integer of 0 to 2; X and X' each independently represent H atom or F atom when A is 1,4-phenylene or represent H atom when A is 1,4-cyclohexylene; Y is alkyl, halogen or CN, alkoxy, methyl group substituted by 1-3 halogen atoms or trihaloalkoxy when A is 1,4-phenylene, or represent alkyl, alkoxy, methyl group substituted by 1-3 halogen atoms or trihaloalkoxy when A is 1,4-cyclohexylene; and R and R' are not simultaneously alkyl chain of 4 or more carbon atoms.The compound of the present invention has a generally usable viscosity and a high NI point and a high elastic constant ratio; hence the liquid crystal composition, particularly the liquid crystal composition for STN, containing the compound of the present invention exhibits improved characteristics as compared with the conventional ones.
    • 提供了具有含有共轭二烯作为分子的末端取代基并表现出优异特性的碳链的新型液晶材料,其为由式(I)表示的二烯衍生物,其中R和R' 各自独立地表示1-5C烷基; A和B各自独立地表示1,4-亚环己基或1,4-亚苯基; n为0或1; m为0〜2的整数; 当A为1,4-亚苯基时,X和X'各自独立地表示H原子或F原子,或当A为1,4-亚环己基时,表示H原子; 当A为1,4-亚苯基时,Y为烷基,卤素或CN,烷氧基,被1-3个卤素原子或三卤代烷氧基取代的甲基,或代表烷基,烷氧基,被1-3个卤素原子取代的甲基或三卤代烷氧基,当A为 1,4-亚环己基; 并且R和R'不是同时为4个或更多个碳原子的烷基链。 本发明的化合物具有通常可用的粘度和高的NI点和高弹性常数比; 因此,与现有技术相比,含有本发明化合物的液晶组合物,特别是STN用液晶组合物显示出改善的特性。