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    • 65. 发明授权
    • 2,3-DIFLUORBIPHENYLE
    • EP0362318B1
    • 1993-08-04
    • EP89902771.8
    • 1989-02-27
    • MERCK PATENT GmbH
    • REIFFENRATH, VolkerKRAUSE, JoachimWÄCHTLER, AndreasWEBER, GeorgFINKENZELLER, UlrichCOATES, DavidSAGE, Ian, CharlesGREENFIELD, SimonGRAY, George, WilliamHIRD, MichaelLACEY, DavidTOYNE, Kenneth, Johnson
    • C09K19/20C09K19/30C09K19/12C09K19/14
    • C09K19/14C09K19/12C09K19/126C09K19/2007C09K19/2021C09K19/3001C09K19/3441
    • 4-Q1-4'-Q2-2,3-difluorobiphenyls, in which Q1 and Q2, independently of each other, denote R or R-A1-A2-Z, where R denotes alkyl with 1-15 C atoms or alkenyl with 3-15 C atoms, which in each case is unsubstituted, singly substituted by cyanogen or at least singly substituted by fluorine or chlorine, in which in each case one or two non-neighbouring CH2 groups can also be replaced by -O-, -CO-, -O-CO-, -CO-O- or -O-COO-, Z denotes -COO-, -O-CO-, -CH2O-, -O-CH2-, -CH2CH2- or a single bond, and A1 and A2 , independently of each other, denote an unsubstituted 1,4-phenylene or a 1,4-phenylene substituted by one or two fluorine atoms, in which one or two CH groups can also be replaced by N, or trans-1,4-cyclohexylene, in which one or two non-neighbouring CH2 groups can also be replaced by -O-, and one of the two groups A1 and A2 can also be a single bond, provided that Z is -CO-O-, -O-CO-, -CH2O-, -OCH2- or -CH2CH2-, if one of the groups Q1 or Q2 denotes alkyl or alkoxy and the other group Q1 or Q2 denotes R-A1-A2-Z, in which one of the two groups A1 and A2 is a single bond, are suitable as components of liquid crystal media.
    • 4-Q1-4'-Q2-2,3-二氟联苯,其中Q1和Q2彼此独立地表示R或R-A1-A2-Z,其中R表示具有1-15个碳原子的烷基或具有 3至15个碳原子,其各自未被取代,单独被氰基取代或至少单独被氟或氯取代,其中在每种情况下一个或两个非相邻的CH 2基团也可以被-O - , - CO - , - O-CO-,-CO-O-或-O-COO-,Z表示-COO-,-O-CO-,-CH2O-,-O-CH2-,-CH2CH2-或单键 ,并且A 1和A 2彼此独立地表示未取代的1,4-亚苯基或被一个或两个氟原子取代的1,4-亚苯基,其中一个或两个CH基团也可以被N取代,或者反式 -1,4-亚环己基,其中一个或两个非相邻的CH2基团也可以被-O-取代,并且两个基团A1和A2中的一个也可以是单键,条件是Z是-CO-O - ,-O-CO - , - CH 2 O - , - OCH 2 - 或-CH 2 CH 2 - ,如果基团Q 1或Q 2中的一个表示烷基或烷氧基并且另一个基团Q 1 或Q2表示其中A1和A2之一为单键的R-A1-A2-Z适合作为液晶介质的组分。