Optically active benzene derivatives, process for producing the same and liquid-crystalline composition containing said derivatives as liquid-crystalline compound and light switching elements

U.S. Patent Number: 5389293

Abstract: Disclosed are herein optically active benzene derivatives represented by the formula (I): ##STR1## preparation processes therefor, liquid crystal composition containing such benzene derivatives as liquid-crystalline compound, and a light switching element using said liquid crystal composition as liquid crystal element, wherein R.sub.1, R.sub.2, x, y, z, m, p and s are as defined in the specification.

Inventors: Higashii; Takayuki (Kishiwada, JP), Kurimoto; Isao (Toyonaka, JP), Toda; Shoji (Takarazuka, JP), Minai; Masayoshi (Moriyama, JP), Tani; Takeshi (Tsukuba, JP), Kawakami; Chizu (Tsukuba, JP), Fujisawa; Koichi (Tsukuba, JP)

Assignee: Sumitomo Chemical Company, Limited (Osaka, JP)

Application Number: 07/912,130

Issued: 1995-02-14

Expired: 2007-02-14

Classes: 252/299.61 ; 544/298; 544/315; 544/335

Field of search: 252/299.01,299.61,299.66 544/298,335,315 560/59,73

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