Liquid crystal materials and additive compounds containing a bicyclo(2,2,2,)octane structure suitable for use in them
申请人:Secretary of State for Defence
in Her Britannic Majesty's Gov.
of the United Kingdom of
Great Britain and Northern Ireland
公开号:EP0120560A2
公开(公告)日:1984-10-03
Liquid crystal compositions are described which comprise a mixture of compounds and which includes at least one additive compound characterised in that the com-osition includes one or more additive compounds of Formula I as follows:
wherein R, represents an alkyl group, R2 represents an alkyl or alkoxy group or hydrogen and
represents a 1,4- disubstituted bicyclo(2,2,2)octane ring. The preparation and properties of novel compounds of Formula I are also described.
所述液晶组合物由化合物混合物组成,其中包括至少一种添加剂化合物,其特征在于该组合物包括如下式 I 的一种或多种添加剂化合物:
其中 R 代表烷基,R2 代表烷基或烷氧基或氢,以及
代表 1,4-二取代双环(2,2,2)辛烷环。还描述了式 I 新型化合物的制备方法和性质。