申请人:Hoechst Aktiengesellschaft
公开号:US05310499A1
公开(公告)日:1994-05-10
Chiral oxazolidinones of the formula (I) or (II) ##STR1## in which R.sup.1 is, for example, a straight-chain or branched alkyl radical having 1 to 16 carbon atoms or R.sup.2 and R.sup.3 are, for example, --H, --CH.sub.3 or phenyl, j, 1 and n are zero, 1 or 2, k and m are zero or 1, A.sup.1, A.sup.2 and A.sup.3 are, for example, phenyl or cyclohexyl, M.sup.1 and M.sup.2 are, for example, COO or CH.sub.2 O, and X is, for example, CH.sub.2 or COO, are suitable as dopes in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases having short response times. A further advantage is that the oxazolidinones induce a helix of very low pitch, so that they are also suitable for helix compensation in LC mixtures.
公式(I)或(II)的手性噁唑烷酮如下:##STR1## 其中R.sup.1是直链或支链烷基,具有1至16个碳原子,或R.sup.2和R.sup.3是--H,--CH.sub.3或苯基,j,1和n为零,1或2,k和m为零或1,A.sup.1,A.sup.2和A.sup.3为苯基或环己基,M.sup.1和M.sup.2为COO或CH.sub.2O,X为CH.sub.2或COO,适用于液晶混合物中的溶液。它们产生液晶相铁电相,具有短的响应时间。另一个优点是,噁唑烷酮诱导非常低的螺旋周期,因此它们也适用于液晶混合物中的螺旋补偿。