发明授权
US5164114A Ethyne derivatives 失效
乙烯衍生物

Ethyne derivatives
摘要:
Ethyne derivatives of the formula IR.sup.1 --(A.sup.1 --Z.sup.1).sub.m --A.sup.3 --C.tbd.C--A.sup.4 --(Z.sup.2 --A.sup.2).sub.n --R.sup.2 Iwherein R.sup.1, A.sup.1, Z.sup.1, m, A.sup.3, A.sup.4, .sub.2 Z.sup.2 and n have the meaning given in Claim 1 and R.sup.2 is --OCF.sub.3, --OC.sub.2 F.sub.4 H or --OC.sub.2 F.sub.5, are suitable as components of liquid crystal phases.
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