专利检索 ap:("DISPLAYTECH, INCORPORATED") AND inv:"WALBA, DAVID" 第 1 页

1.

发明公开
FERROELECTRIC LIQUID CRYSTAL COMPOSITIONS CONTAINING CHIRAL HALOALKOXY TAIL UNITS 失效
标题翻译：含有CHALAL HALOALKOXY TAIL UNITS的电磁液晶组合物

公开(公告)号：EP0540648A4

公开(公告)日：1993-08-04

申请号：EP91914316

申请日：1991-07-22

申请人： DISPLAYTECH, INCORPORATED

发明人： WAND, MICHAEL , THURMES, WILLIAM, N. , WALBA, DAVID

IPC分类号： C07C43/225 , C07C69/76 , C07C69/773 , C07C69/92 , C07D213/30 , C07D237/08 , C07D239/26 , C07D285/12 , C09K19/04 , C09K19/12 , C09K19/20 , C09K19/34 , C09K19/58 , C09K19/52 , C07D239/02 , G02F1/13

CPC分类号： C07D239/26 , C07C69/92 , C09K19/04 , C09K19/126 , C09K19/2021 , C09K19/3441 , C09K19/3463 , C09K19/586 , C09K19/588

摘要： The subject application discloses a chiral nonracemic composition of the general formula: R1-Ar-O-CH2-C*HX-C*HY-CH2-O-R2, wherein R1 is a tail group of two to sixteen carbons; Ar is an achiral FLC core of at least two rings; * denotes a chiral carbon; X and Y are halogens; and R2 is one to ten carbon atoms. The -O-CH2-C*HX-C*HY-CH2-O- segment comprises the chiral proximal segment of the chiral tail; the proximal segment is selected from the enantiomers 2R,3R-dihalo and 2S,3S-dihalo. R2 is the distal segment of the chiral tail.