会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明授权
    • Cyclosiloxanes containing mesogenic side groups
    • 含有介晶侧基的环硅氧烷
    • US5304667A
    • 1994-04-19
    • US38312
    • 1993-03-29
    • Norman HaeberleWolfgang HaasFranz-Heinrich Kreuzer
    • Norman HaeberleWolfgang HaasFranz-Heinrich Kreuzer
    • C07F7/21C09K19/40G02F1/13C07F7/04C07F7/08
    • C09K19/408C07F7/21
    • The present invention relates to cyclic siloxanes which have at least one group of formula (1) bonded to a silicon atom--(CH.sub.2).sub.x --R"--[--L--A--].sub.y --(L).sub.z --T (1),in which x is an integer having a value of at least 2, preferably having a value of from 2 to 10, R" is a chemical bond or a divalent radical of the formula --COO--, --OOC--, --CH.sub.2 --CH.sub.2 --, --CH.dbd.CH--, --C.tbd.C--, --N.dbd.N--, --N.dbd.N, --N.dbd.CH--, --CH.dbd.N or --Si(R).sub.2 --, where the radical R is identical or different and is an optionally substituted hydrocarbon radical having from 1 to 18 carbon atoms, L which is the same or different represents the 1,4-phenylene or 1,4-cyclohexylene radicals which are optionally 2-, 3-, 5- and/or 6-substituted by at least one radical Q, Q is the same or different radical selected from hydrogen, fluorine or chlorine atoms or cyano, methyl or trifluoromethyl groups, A is the same or different and represents divalent radicals R" is a chemical bond or a divalent radical of the formula --CH.sub.2 --O--, --O--CH.sub.2 --, y is an integer having a value of from 0 to 10, preferably from 0 to 2, z is an integer having a value of from 0 to 10, preferably from 0 to 2, with the proviso that the sum y+z is at least 1, and T is a cholesteryl radical or a substituted or unsubstituted hydrocarbon radical having from 1 to 18 carbon atoms, in which the substituents are preferably selected from the group consisting of halogen atoms, cyano groups, nitro groups, hydrocarbonoxy groups having from 1 to 10 carbon atoms and mixtures thereof.
    • 本发明涉及具有至少一个结合到硅原子 - (CH 2)x R“ - ( - LA-)y - (L)zT(1)的式(1)的基团的环状硅氧烷,其中x是 整数,其值至少为2,优选为2至10,R“为化学键或式-COO - , - OOC - , - CH 2 -CH 2 - , - CH = CH - , - C(三键)C - , - N = N - , - N = N,-N = CH-,-CH = N或-Si(R)2 - ,其中基团R相同或不同, 是具有1至18个碳原子的任选取代的烃基,相同或不同的L代表任选为2-,3-,5-和/或6的1,4-亚苯基或1,4-亚环己基 被至少一个基团Q取代,Q是选自氢,氟或氯原子的相同或不同的基团或氰基,甲基或三氟甲基,A相同或不同,表示二价基团R“是化学键或 式-CH 2 -O - , - O-CH 2 - 的二价基团,y是具有va的整数 0至10,优选0至2,z为0至10,优选0至2的整数,条件是和y + z至少为1,T为 胆固醇基或具有1至18个碳原子的取代或未取代的烃基,其中取代基优选选自卤素原子,氰基,硝基,具有1至10个碳原子的烃氧基及其混合物 。