公开(公告)号：US4162988A

公开(公告)日：1979-07-31

申请号：US883623

申请日：1978-03-06

申请人： Robert C. Maze ,  Everett P. Oppenheim ,  Reese M. Reynolds

发明人： Robert C. Maze ,  Everett P. Oppenheim ,  Reese M. Reynolds

IPC分类号： C07C327/00 ,  C09K19/00 ,  C09K19/28 ,  C07C143/68 ,  C09K3/34

CPC分类号： C07C255/00 ,  C07C327/00 ,  C09K19/28

摘要： Novel compounds exhibiting liquid crystal properties have the formula:R-.phi.-.phi.-X-.phi.-R1,whereinR and R1 are, independently in each case, hydrogen or an alkyl, aryl, alkylaryl, arylalkyl, or alkoxy group containing from 1 to about 12 carbon atoms, a halogen, a cyano group, an alkyl cyano group of from 1 to 5 carbon atoms, a --CF.sub.3 group, an --N.sub.3 group, a nitro group or a --N(CH.sub.3).sub.2 group, andX is ##STR1## These compounds are especially useful for increasing the clearing point and reducing the operating voltage of liquid crystal compositions including other ester or Schiff base liquid crystal compounds, and the like.

摘要翻译： 显示液晶性质的新型化合物具有下式：

公开(公告)号：US4137250A

公开(公告)日：1979-01-30

申请号：US760594

申请日：1977-01-19

申请人： Reese M. Reynolds

发明人： Reese M. Reynolds

IPC分类号： C09K19/28 ,  C07C153/11 ,  C09K3/34 ,  G02F1/13

CPC分类号： C09K19/28

摘要： Novel compounds exhibiting liquid crystal properties have the formula ##STR1## wherein .phi. is a benzene ring containing hydrogen atoms or an inert substituent therefor at other than the para position, and R and R' are, independently in each case, a hydrocarbyl group containing from about 1 to about 20 carbon atoms, a nitrogen containing group, or a halogen. Novel liquid crystal compositions include at least one of these compounds, preferably present in a mixture of at least two homologous liquid crystal compounds in substantially eutectic proportions. These liquid crystal compounds and compositions have greater nematic stability than their corresponding disubstituted phenylbenzoate analogs. They may be used in liquid crystal displays, particularly field effect nematic liquid crystal displays.

摘要翻译： 具有液晶性质的新型化合物具有式“IMAGE”，其中phi是含有氢原子的苯环或其对位以外的惰性取代基，R和R'各自独立地为含有 约1至约20个碳原子，含氮基团或卤素。 新型液晶组合物包括这些化合物中的至少一种，优选以至少两种基本上共晶比例的同源液晶化合物的混合物存在。 这些液晶化合物和组合物具有比它们相应的二取代苯基苯甲酸酯类似物更大的向列稳定性。 它们可以用于液晶显示器，特别是场效应向列型液晶显示器。