Title:
【発明の名称】光学活性液晶成分
Document Type and Number:
Japanese Patent JP2725677
Kind Code:
B2
Abstract:
Optically active compounds of the formula in which R<1> and R<2>, independently of one another, are alkyl having at least 2 carbon atoms; A<1>, A<2> and A<3>, independently of one another denote unsubstituted or cyano-, halogen- and/or methyl-substituted 1,4-phenylene in which, if desired, one or two CH groups are replaced by nitrogen, or denote unsubstituted or cyano- and/or methyl- substituted trans 1,4-cyclohexylene in which, if desired, one or two CH2 groups are replaced by oxygen; Z<1> and Z<2>, independently of one another are a single covalent bond, -COO-, -OOC-, -CH2CH2-, -OCH2-, -CH2O-, -C IDENTICAL C-, -COS- or -SOC-; m represents the number 0 or 1, n denotes an integer from 0 to 4; X denotes oxygen or a methylene group; and C<*> is a chiral carbon atom, one of the chiral carbon atoms having the R configuration and the other the S configuration, are used in liquid-crystalline mixtures and for compensating the temperature- dependence of the threshold voltage of liquid crystal cells.
Inventors:
SUCHIIBUN KERII
FURANSU REENHOTOSU
AROISU BIRIGAA
FURANSU REENHOTOSU
AROISU BIRIGAA
Application Number:
JP20846488A
Publication Date:
March 11, 1998
Filing Date:
August 24, 1988
Export Citation:
Assignee:
EFU HOFUMAN RA ROSHU AG
International Classes:
C07C69/75; C07C41/00; C07C43/20; C07C43/205; C07C43/235; C07C67/00; C07C69/757; C07C69/92; C07C69/94; C07C253/00; C07C255/49; C07C255/54; C07C255/55; C07C325/00; C07C327/24; C07C327/26; C07C327/28; C07D237/08; C07D237/14; C07D239/26; C07D239/34; C07D241/12; C07D241/18; C09K19/12; C09K19/20; C09K19/30; C09K19/34; C09K19/42; C09K19/44; C09K19/46; G02F1/13; G02F1/137; G02F1/139; (IPC1-7): C07C43/20; C07C69/75; C07C255/49; C07D239/26; C07D239/34; C09K19/12; C09K19/20; C09K19/30; C09K19/34
Domestic Patent References:
| JP63175095A | ||||
| JP6442454A |
Attorney, Agent or Firm:
Heiyoshi Odashima