Liquid-crystalline dielectrics
    53.
    发明授权
    Liquid-crystalline dielectrics 失效
    液晶电介质

    公开(公告)号:US4755323A

    公开(公告)日:1988-07-05

    申请号:US839293

    申请日:1986-03-13

    摘要: New 1,4-dioxanes of the formula I ##STR1## wherein R.sup.1 and R.sup.2 each signify and alkyl group with 1 - 10 C-atoms, wherein one or two CH.sub.2 groups can also be replaced by O-atoms, F, Cl, Br or CN,R.sup.2 also H,A.sup.1 and A.sup.2 each signify 1,4-phenylene, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,4-dioxane-2,5-diyl, peperidine-1,4-diyl, 1,4-bicyclo(2,2,2)-octylene or pyrimidine-2,5-diyl groups, unsubstituted or substituted by 1 - 4 F-atoms,Z.sup.1 and Z.sup.2 each signify --CO--O--, --O--CO--, CH.sub.2 CH.sub.2 --, OCH.sub.2 -- --CH.sub.2 O-- or a single bond,m and n each signify 0, 1, 2 or 3,(m+n), however, are at least 1 and at most 3,whereby for m=2 or 3, the groups A.sup.1 and for n=2 or 3 the groups A.sup.2 can each be the same or different from one another,as well as the acid-addition salts of the basic ones of these compounds,are suitable for use as components of liquid-crystalline dielectrics.

    摘要翻译: 其中R 1和R 2各自表示的具有1-10个C原子的烷基,其中一个或两个CH 2基团也可被O原子,F,Cl, Br或CN,R2还有H,A1和A2各自表示1,4-亚苯基,1,4-亚环己基,1,3-二恶烷-2,5-二基,1,4-二恶烷-2,5-二基,哌啶 -1,4-二基,1,4-二环(2,2,2) - 亚辛基或嘧啶-2,5-二基,未取代或被1-4个F原子取代,Z1和Z2各自表示-CO- O-,-O-CO-,CH 2 CH 2 - ,OCH 2 -CH 2 O-或单键,m和n各自表示0,1,2或3,(m + n),然而,至少为1以上 3,其中对于m = 2或3,基团A1和n = 2或3,基团A2可以彼此相同或不同,以及这些化合物中的碱性基团的酸加成盐, 适用于液晶电介质的组分。