The invention relates to fluoro-chloro-benzene derivatives of the formula I ##STR1## wherein R denotes an alkyl or halogenoalkyl residue of up to 12 C atoms wherein one or two non-adjacent CH.sub.2 groups may also be replaced by -0- and/or -HC=CH-, the radical A is a ring of the formula (1) or (2): ##STR2## Q is a bivalent radical of the formula (1) or (2) or a single bond or--if radical A denotes trans-1,4-cyclohexylene--is also a bivalent radical of the formulae (3), (4) or (5): ##STR3## and L.degree., L.sup.1 and L.sup.2 are each independently H or F, with the proviso that at least one of L.degree., L.sup.1 and L.sup.2 present in the molecule denotes F.
本发明涉及公式I的
氟氯苯衍
生物,其中R表示碳数为12的烷基或卤代烷基残基,其中一个或两个非相邻的CH.sub.2基团也可以被-0-和/或-HC=CH-替换,基团A是公式(1)或(2)的环:##STR2## Q是公式(1)或(2)的二价基团或单键,或者如果基团A表示trans-1,4-环己亚基,则还是公式(3)、(4)或(5)的二价基团:##STR3## L.degree.、L.sup.1和L.sup.2各自独立地表示H或F,但至少分子中的L.degree.、L.sup.1和L.sup.2中的一个表示F。