利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

74 条记录 (耗时 0.027 秒)

    Process for the preparation of bis-styrylbenzenes
    1.
    发明授权
    Process for the preparation of bis-styrylbenzenes 失效
    双苯乙烯基苯的制备方法

    公开(公告)号：US4785128A

    公开(公告)日：1988-11-15

    申请号：US474731

    申请日：1983-03-18

    申请人： Leonardo Guglielmetti

    发明人： Leonardo Guglielmetti

    IPC分类号： C09B57/00 ,  C11D3/42 ,  D06L3/12 ,  C07C121/64

    CPC分类号： D06L3/125

    摘要： A fluorescent brightener is proposed which consists of 51-99% of an unsymmetrically substituted compound of the formula ##STR1## in which R and R.sub.1 are identical or different and, if R and R.sub.1 are identical, R.sub.1 must occupy a position in the phenyl ring to which it is bonded which differs from the position occupied by R in its phenyl ring, and in which R and R.sub.1 independently of one another are CN or a carboxylic acid ester group, and 49-1% of a symmetrically substituted compound of the formula ##STR2## in which R is as defined above and the two R's are bonded to identical positions in their phenyl rings, as are also agents which contain these fluorescent brighteners and the use of these fluorescent brighteners for the fluorescent brightening of, in particular, textile materials, preferably made of polymer. The said fluorescent brighteners are prepared by reacting terephthalaldehyde preferably with a correspondingly substituted benzylphosphonate and further reacting the resulting mixture of a correspondingly substituted 4-stilbene aldehyde and a symmetrical p-bis-styrylbenzene with a benzylphosphonate which differs from the benzylphosphonate first used.

    摘要翻译： 提出了一种荧光增白剂，其由51-99％的不对称取代的式（1）化合物组成，其中R和R 1相同或不同，并且如果R和R 1相同，则R1必须占据 与苯基环中R所占的位置不同的苯环，其中R和R 1彼此独立地为CN或羧酸酯基，和49-1％的对称取代的化合物 其中R如上定义并且两个R在其苯环中的相同位置键合，其中R是如上定义的，以及含有这些荧光增白剂的试剂和使用这些荧光增白剂进行荧光增白 特别是纺织材料，优选由聚合物制成。 所述荧光增白剂通过使对苯二甲醛优选与相应取代的苄基膦酸酯反应制备，并进一步使得到的相应取代的4-芪和对称的对双对苯乙烯基苯的混合物与首先使用的苄基膦酸盐不同的苄基膦酸酯反应。

    Liquid crystal compounds and materials and devices containing them
    6.
    发明授权
    Liquid crystal compounds and materials and devices containing them 失效
    液晶化合物和含有它们的材料和装置

    公开(公告)号：US4219256A

    公开(公告)日：1980-08-26

    申请号：US62624

    申请日：1979-08-01

    申请人： George M. Gray ,  Stephen M. Kelly ,  Damien G. McDonnell ,  Alan Mosley

    发明人： George M. Gray ,  Stephen M. Kelly ,  Damien G. McDonnell ,  Alan Mosley

    IPC分类号： C09K19/32 ,  C07C121/60 ,  C07C121/64 ,  C09K3/34

    CPC分类号： C09K19/321

    摘要： A novel liquid crystal compound has the molecular structure: ##STR1## where R is an alkyl group, which may contain up to 18 carbon atoms and which may be normal or branched and may contain a chiral center, ##STR2## is a bicyclo (2.2.2) octane ring, ##STR3## is a phenyl ring and CN is a cyano group, n being an integer greater than 0 preferably 1 or 2.The compound may be used in mixtures with other liquid crystal compounds in the same or other families and the compound or mixtures may be used in known liquid crystal devices, eg the twisted nematic and cholesteric-to-nematic phase change devices, depending on its properties.

    摘要翻译： 一种新的液晶化合物具有以下分子结构：其中R是烷基，其可以含有至多18个碳原子，并且其可以是正链或支链的并且可以含有手性中心，IMAGE是双环（2.2 .2）辛烷环，为苯环，CN为氰基，n为大于0的整数，优选为1或2.该化合物可与其他族中其它液晶化合物的混合物使用 并且该化合物或混合物可以用于已知的液晶装置中，例如扭转的向列相和胆甾型至向列相变装置，这取决于其性质。

    Azine liquid crystal compounds for use in light-control devices
    7.
    发明授权
    Azine liquid crystal compounds for use in light-control devices 失效
    用于光控制装置的Azine液晶化合物

    公开(公告)号：US4196975A

    公开(公告)日：1980-04-08

    申请号：US26781

    申请日：1979-04-03

    申请人： Hugh Mailer ,  Stanley Laskos, Jr.

    发明人： Hugh Mailer ,  Stanley Laskos, Jr.

    IPC分类号： C09K19/00 ,  C09K19/24 ,  C07C119/10 ,  C07C121/64 ,  C09K3/34

    CPC分类号： C07C251/88 ,  C09K19/24

    摘要： A light-control device includes a liquid crystal material sandwiched between a pair of planar, light-transmitting members. The liquid crystal material particularly includes an asymmetrical azine compound having the general formula: ##STR1## wherein R.sub.1 and R.sub.2 are different para-substituents selected from the group comprising cyano, halogen, alkyl, and substituted alkyl radicals in which the alkyl radical has from one to nine carbon atoms, and wherein X and Y are selected from the group comprising hydrogen and methyl radicals.

    摘要翻译： 光控制装置包括夹在一对平面透光构件之间的液晶材料。 液晶材料特别包括具有以下通式的不对称吖嗪化合物：其中R 1和R 2是选自氰基，卤素，烷基和取代的烷基的不同对位取代基，其中烷基具有一个 至9个碳原子，并且其中X和Y选自氢和甲基。

    Liquid crystal materials and devices
    9.
    发明授权
    Liquid crystal materials and devices 失效
    液晶材料和器件

    公开(公告)号：US3947375A

    公开(公告)日：1976-03-30

    申请号：US413247

    申请日：1973-11-06

    申请人： George William Gray ,  Kenneth John Harrison

    发明人： George William Gray ,  Kenneth John Harrison

    IPC分类号： C07C205/06 ,  C07C205/11 ,  C07C205/12 ,  C07C205/35 ,  C09K19/12 ,  C09K19/54 ,  C09K3/34 ,  C07C121/64 ,  C07C121/66 ,  C07C121/70 ,  G02B5/23 ,  G02F1/01 ,  G02F1/03 ,  G02F1/13

    CPC分类号： C09K19/12 ,  C07C205/06 ,  C07C205/11 ,  C07C205/12 ,  C07C205/35 ,  C09K19/126 ,  C09K19/54 ,  C07C2103/18

    摘要： A novel liquid crystal material contains a compound having a molecular structure such that the material exhibits a liquid crystal phase, the molecular structure of the compound being ##SPC1##Or an orthosubstituted derivative thereof, where X and Y are different parasubstituents of the kind which promote liquid crystal behaviour, where the para substituent is a group selected from the following list; an alkyl group, an acyloxy group, an unsaturated group or an alkoxy group having more than one carbon atom; and where the para-substituent Y is a group selected from the following list; a cyano group, a nitro group, a group which includes a terminal cyano group, a group which includes a terminal nitro group and an acyloxy group. The material may be the said compound or it may be a multi-component solution or mixture containing it. The liquid crystal material may be nematic, smectic or cholesteric depending on the selection of the substituents X and Y. A device such as a twisted nematic effect device, incorporating the material may be operated at low temperatures. The material does not suffer from significant chemical and/or photochemical decomposition when used in a liquid crystal device.

    摘要翻译： 新型液晶材料含有具有分子结构的化合物，使得该材料表现出液晶相，该化合物的分子结构为OR或其衍生物，其中X和Y是促进液晶性能的不同的副成分 ，其中对位取代基是选自以下列表的基团; 烷基，酰氧基，不饱和基或具有多于一个碳原子的烷氧基; 并且其中对位取代基Y是选自以下列表的基团; 氰基，硝基，包括末端氰基的基团，包括末端硝基和酰氧基的基团。 该材料可以是所述化合物，或者它可以是含有它的多组分溶液或混合物。 取决于取代基X和Y的选择，液晶材料可以是向列型，近晶形或胆甾醇型。掺入该材料的扭曲向列效应器件的器件可以在低温下操作。 当用于液晶装置时，该材料不会受到显着的化学和/或光化学分解的影响。