发明授权
- 专利标题： Nitrogen heterocycles and liquid crystalline mixtures containing them
- 专利标题（中）： 含氮杂环和含有它们的液晶混合物
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申请号： US955633申请日： 1992-10-02
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公开(公告)号： US5326497A公开(公告)日： 1994-07-05
- 发明人: Richard Buchecker , Stephen Kelly , Martin Schadt
- 申请人： Richard Buchecker , Stephen Kelly , Martin Schadt
- 申请人地址： NJ Nutley
- 专利权人： Hoffmann-La Roche Inc.
- 当前专利权人： Hoffmann-La Roche Inc.
- 当前专利权人地址： NJ Nutley
- 优先权： CHX3034/91 19911016; CHX2679/92 19920828
- 主分类号： C07D213/65
- IPC分类号： C07D213/65 ; C07D239/36 ; C09K19/34 ; G02F1/13 ; C09K19/30 ; C07D213/62 ; C07D239/02 ; C09K19/12
摘要：
Compounds of the general formula ##STR1## wherein R.sup.1 is C.sub.5-12 -alkyl or C.sub.5-12 -alkenyl;R.sup.2 is C.sub.1-9 -alkyl or C.sub.2-9 -alkenyl; provided that at least one of groups R.sup.1 and R.sup.2 is alkenyl;X is a CH group or nitrogen;n is either 0 or 1;q is a whole number between 2 to 6 inclusive;r is either 0 or 1 provided that the sum of q and r at least 3,s is either 0 or 1; andp is either 1 or 2, provided that n is zero when p is 2;mixtures which contain these compounds as well as the use of these compounds for electro-optical purposes.