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US5389295A Benzene derivatives, and a liquid crystal medium 失效
苯衍生物和液晶介质

Benzene derivatives, and a liquid crystal medium
摘要:
Benzene derivatives of the formula I ##STR1## in which n is 1 to 7, Q is --CO or --(CH.sub.2).sub.r --, where r is 1 to 5, s is 0, 1 or 2, t is 0 or 1, where s+t.gtoreq.1, X is F, Cl, --CF.sub.3, --CN, --OCF.sub.3 or --OCHF.sub.2, and Y, L and Z are each, independently of one another, H or F.
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