Title:
OPTICALLY INACTIVE LOW-MOLECULAR LIQUID CRYSTAL COMPOUND, LIQUID CRYSTAL COMPOSITION CONTAINING THE COMPOUND AND LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
Japanese Patent JP3677102
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide the subject new compound consisting of a specific 3,3- dialkylacrylic acid, having a low crystallization temperature and a wide temperature range to give a smectic C phase, giving a ferroelectric liquid crystal composition stable over a long period and useful for a liquid crystal display element, etc.
SOLUTION: This optically inactive low-molecular liquid crystal compound has a structure expressed by the formula I (R is methyl, ethyl or propyl; (m) is an integer of 1-20; (n) is an integer of 3-19; A is group of the formula II or the formula III; X is single bond or O). The compound is useful in an optoelectronic field as a liquid crystal material for a liquid crystal display element, etc., to give a ferroelectric liquid crystal composition having a low crystallization temperature and a wide temperature range to exhibit smectic C phase and capable of stably keeping a compatibilized state over a long period. The compound can be produced by reacting a 3,3-dialkylacrylic acid with a hydroxyphenylpyrimidine derivative of the formula IV, etc., in DMF in the presence of tetramethylammonium hydroxide, etc.
Inventors:
Ido Motohisa
Hiroyuki Endo
Hiroyuki Endo
Application Number:
JP28146795A
Publication Date:
July 27, 2005
Filing Date:
October 30, 1995
Export Citation:
Assignee:
IDEMITSU KOSAN CO.,LTD.
International Classes:
G02F1/13; C07D239/26; C09K19/34; (IPC1-7): C07D239/26; C09K19/34; G02F1/13
Domestic Patent References:
| JP5294943A | ||||
| JP7165672A | ||||
| JP69503A | ||||
| JP63289090A | ||||
| JP63284291A |
Attorney, Agent or Firm:
Tetsuo Hotaka