Ferroelectric liquid crystal and liquid crystal composition

Abstract

Abstract NEW MATERIAL:A compound of formula I [l, m are 1, 2; X is R<2>, OR<2>, COR<2>, OCOR<2>, OCOOR<2>, COOR<2> (R<2> is 1-15C alkyl); R<1> is 2-15C alkyl; * denotes optically active atoms]. EXAMPLE:p-Octyloxyphenyl 4'-(1-methyl-heptyloxy)-4-biphenylcarboxylate. USE:Chiral liquid crystal: it has high compatibility to other compounds to expand temperature range of the chiral smectic C phase, further lowers the driving voltage of a display element utilizing ferroelectric properties. PREPARATION:The reaction of optically active 1-methyl-1-alkanol of formula IIwith p-toluenesulfonyl chloride gives a compound of formula III. The product is allowed to react with a compound of formula IV, followed by hydrolysis to give a compound of formula VI. Then, the product is allowed to react with thionyl chloride and a phenol successively to give the compound of formula I.

Inventors

• 👤 Hiromichi Inoue
• 👤 博道 井上
• 👤 Shinichi Saito
• 👤 伸一 斉藤
• 👤 Kazutoshi Miyazawa
• 👤 宮沢　和利
• 👤 Takashi Inukai
• 👤 犬飼　孝
• 👤 Kenji Terajima
• 👤 寺島　兼詞

Bibliographic Details