The present invention is concerned with novel chlorophenylalkoxyalkyl compounds of the general formula ##STR1## wherein R denotes an alkyl residue with 1 to 12 carbon atoms; n is a whole number of 2 to 7, ring A denotes trans-1,4-cyclohexylene or 1,4-phenylene; m is either 0 or 1; ring B is trans-1,4-cyclohexylene, 1,4-phenylene in which optionally one CH group or two non-adjacent CH groups is/are replaced by nitrogen or, when m stands for 1, also trans-1,3-dioxane-2,5-diyl; Y.sup.1 and Y.sup.2 each independently represent a single covalent bond or --CH.sub.2 CH.sub.2 --; and X denotes hydrogen, fluorine or chlorine, their manufacture, liquid crystalline mixtures which contain these compounds, their production and use for electro-optical purposes.
本发明涉及一种新型
氯苯基烷氧基烷基化合物,其一般式为##STR1##其中,R表示1至12个碳原子的烷基残基;n为2至7的整数,环A表示反-1,4-
环己烯基或1,4-苯基;m为0或1;环B为反-1,4-
环己烯基、1,4-苯基,其中可选地有一个CH基或两个非相邻的CH基被氮代替,或者当m为1时,还可以是反-1,3-二氧杂
环戊烷-2,5-二基基;Y1和Y2各自独立地表示单个共价键或--CH2CH2--;X表示氢、
氟或
氯。本发明还涉及这些化合物的制造、液晶混合物、其生产和用于电光目的的用途。