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    • 9. 发明授权
    • Alkenyl compound, liquid crystal composition, and liquid crystal display device
    • 烯基化合物,液晶组合物和液晶显示装置
    • US06231934B1
    • 2001-05-15
    • US09155348
    • 1998-09-28
    • Tomoyuki KondoShuichi MatsuiKazutoshi MiyazawaYasuko SekiguchiEtsuo Nakagawa
    • Tomoyuki KondoShuichi MatsuiKazutoshi MiyazawaYasuko SekiguchiEtsuo Nakagawa
    • C09K1934
    • C07C43/225C07C43/176C07C43/188C07C69/753C07C69/76C09K19/04C09K19/16C09K19/3001C09K19/3048C09K19/3059C09K19/3402C09K19/42C09K19/44C09K19/46C09K2019/0448C09K2019/0451C09K2019/3422Y10T428/10
    • The liquid crystalline compound is expressed by the general formula (1) Ra-A1-Z1-A2-Z2-A3-Z3-A4-Rb   (1) wherein Ra represents an alkenyl group having 2 to 20 carbon atoms or an alkyl group having 1 to 20 carbon atoms any methylene group (—CH2—) in the alkenylene or alkyl group may be replaced by —O—, —S—, —CO—, —CH═CH—, or —C≡C—, but in no case —O— and/or —S— continues, and any hydrogen atom in Ra may be replaced by a halogen atom; Rb represents Ra, a halogen atom, or cyano group provided that at least one of Ra and Rb represents a group having double bond; A1, A2, A3, and A4 independently represent trans-1,4-cyclohexylene group, 1,4-phenylene group any hydrogen atom on the ring may be replaced by fluorine atom or cyano group, cyclohexenediyl group, pyridine-2,5-diyl group, pyrimidine-2,5-diyl group, or 1,3-dioxane-2,5-diyl group; and Z1, Z2, and Z3 independently represent an alkenylene group having 2 to 4 carbon atoms, —(CH2)2—, —COO—, —OCO—, —C≡C—, —CH2O—, —OCH2—, or single bond any hydrogen atom in the groups may be replaced by a halogen atom provided that at least one of Z1, Z2, and Z3 represents an alkenylene group having 2 to 4 carbon atoms.
    • 液晶化合物由通式(1)表示,其中R a表示具有2至20个碳原子的烯基或具有1至20个碳原子的烷基,亚烯基或烷基中的任何亚甲基(-CH 2 - )可以 被-O - , - S - , - CO - , - CH = CH-或-C = C-取代,但不限于-O-和/或-S-,Ra中的任何氢原子 被卤素原子取代; Rb表示Ra,卤素原子或氰基,Ra和Rb中的至少一个表示具有双键的基团; A1,A2,A3和A4独立地表示反式-1,4-亚环己基,1,4-亚苯基,环上的任何氢原子可以被氟原子或氰基取代,环己烯二基,吡啶-2,5- 二基,嘧啶-2,5-二基或1,3-二恶烷-2,5-二基; 且Z 1,Z 2和Z 3独立地表示具有2至4个碳原子的亚烯基, - (CH 2)2 - , - COO - , - OCO - , - C = C - , - CH 2 O - , - OCH 2 - 键中的任何氢原子可以被卤素原子代替,条件是Z 1,Z 2和Z 3中的至少一个表示具有2至4个碳原子的亚烯基。