This invention relates to new nematic liquid crystal substances for electro-optical components. The object of this invention is to create substances for electro-optical components combining chemical and thermal stability with low melting and high clear points at low operational voltage, as well as to processes for their production. It has been found that new liquid-crystal trans-6-n-alkyl-decalin-2-carbonic acid ester of the general formula <IMAGE> can be introduced into electro-optical components. These substances are produced by the catalytic high-pressure hydrogenation of 6-n-alkylnaphthalene-2-carbonic acids, separation of the trans-isomers by distillation, and esterification with the corresponding hydroxy compounds of the acyl chlorides obtained through reaction with thionyl chloride.
申请公布号
US4438268(A)
申请公布日期
1984.03.20
申请号
US19810302288
申请日期
1981.09.14
申请人
ZASCHKE, HORST;SCHAEFER, WOLFGANG;DEUTSCHER, HANS-JOACHIM;DEMUS, DIETRICH;PELZL, GERHARD
发明人
ZASCHKE, HORST;SCHAEFER, WOLFGANG;DEUTSCHER, HANS-JOACHIM;DEMUS, DIETRICH;PELZL, GERHARD