FERROELECTRIC LIQUID CRYSTAL

Japanese Patent JP2948783

B2

PROBLEM TO BE SOLVED: To obtain the subject liquid crystal compound bearing an antipodic haloalkyl residue, and useful for displays having a memorizing capability for displaying letters, signs or figures and quick in startup.
SOLUTION: This ferroelectric liquid crystal compound, which is shown by the formula [X is F, Br or Cl; E is a halogen; R1 is (R3) (R4) CH; R2 is CkH2k+1O; (k) is 1-12; R3 and R4 are each CH3 or C2H5], is obtained by esterification between an antipodic α-carboxylic acid or a derivative therefrom and an appropriate hydroxy compound. In this case, the antipodic α-carboxylic acid can be prepared by reaction of an antipodic α-amino acid, by dissolution from the racemic α-halocarboxylic acid, or by asymmetric synthesis. This liquid crystal compound has high spontaneous polarity by virtue of the high dipole moment of the haloalkyl derivative, therefore affording thermally stable displays short in startup time.

BAKU GUN YONGU
PETORA BARUTO
DEIITORITSUHI DEMUSU
DETOREFU YOAHIMI
BARUBARA KAMUPA
ZASUKIA KEERERU
KURISUCHINA MOORU
RAINHARUTO PASHUKE
GERUHARUTO PERUTSURU
URURITSUHI ROOZENFUERUTO
UORUFUGANGU SHEEFU

JP13455197A

September 13, 1999

May 26, 1997

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SAMUSUN EREKUTORON DEBAISESU CO LTD

C07D253/06; C07C67/00; C07C69/63; C07C69/65; C07C69/773; C07C69/90; C07C69/92; C07C69/94; C07C201/00; C07C241/00; C07C245/06; C07C253/00; C07C255/52; C07C255/54; C07C255/65; C07C291/08; C07D213/30; C07D213/65; C07D213/80; C07D239/26; C07D249/18; C07D257/08; C07D271/10; C07D277/32; C07D277/36; C07D285/12; C07D295/08; C07D319/06; C07D327/06; C07D339/08; C09K19/12; C09K19/20; C09K19/34; C09K19/46; G02F1/13; (IPC1-7): C07C69/92; C09K19/20

Esaki Mitsufumi

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