Machine-detectable security marking with an increased level of proof against forgery, production of the security marking, and security system comprising this security marking
    1.
    发明授权
    Machine-detectable security marking with an increased level of proof against forgery, production of the security marking, and security system comprising this security marking 有权
    机器可检测的安全标记,具有增加的防伪证明,生产安全标记和包括该安全标记的安全系统

    公开(公告)号:US06570648B1

    公开(公告)日:2003-05-27

    申请号:US09716688

    申请日:2000-11-20

    IPC分类号: G06K974

    摘要: The invention relates to a security marking whose level of proof against forgery is increased relative to known security markings, comprising liquid-crystalline material with chiral phase, wherein present within the security marking are at least two liquid-crystalline materials with chiral phase which differ in at least one property selected from the group consisting of handedness, color and color flop and which are arranged in the form of a structured or unstructured marking or a multilayer marking or in the form of liquid-crystalline pigments in a liquid-crystalline matrix, or wherein there is at least one liquid-crystalline material with chiral phase whose reflection band has been broadened by means of special techniques, or wherein there is at least one liquid-crystalline material with chiral phase which has a defined three-dimensional arrangement.

    摘要翻译: 本发明涉及一种安全标识,其防伪证件的级别相对于已知的安全标记增加,包括具有手性相的液晶材料,其中存在于安全标记内的至少两种具有手性相的液晶材料,其具有不同的手性相 选自螺旋性,颜色和颜色的组中的至少一种性质,其以结构化或非结构化标记或多层标记的形式或液晶颜料的形式排列在液晶基质中,或 其中存在具有手性相的至少一种液晶材料,其反射带已经通过特殊技术变宽,或者其中存在至少一种具有定义的三维排列的具有手性相的液晶材料。

    Liquid-crystalline silicones having increased UV stability
    4.
    发明授权
    Liquid-crystalline silicones having increased UV stability 失效
    具有增加的UV稳定性的液晶硅氧烷

    公开(公告)号:US06358574B1

    公开(公告)日:2002-03-19

    申请号:US09455875

    申请日:1999-12-06

    IPC分类号: C09K1938

    摘要: Crosslinkable LC organosiloxanes exhibiting excellent UV stability, contain units of the general formula 1 [RbMescSiO(4−b−c)/2]  (1) in which R are C1-C4-alkyl radicals, Mes is at least one group of the general formula 2 and, if desired, of the general formula 3, b has the value 0, 1 or 2, and c has the value 0, 1, 2, 3 or 4, with the proviso that the sum of the values of b and c is a maximum of 4, where the Mes groups of the general formulae 2 and 3 exhibit the following structure: —(CH2)p—(O)q—A—[B—A]r—E—F—VN  (2) —(CH2)m—(O)n—(A)t—Q—X  (3) in which A, B, Q, X, E, F, VN, m, p, n, q, t and r have the meanings given in claim 1, with the proviso that the LC organosiloxanes do not constitute a phenyl ester derivative of an aliphatic, aromatic or heteroaromatic carboxylic acids.

    摘要翻译: 显示出优异的UV稳定性的可交联的LC有机硅氧烷含有通式1的单元,其中R是C1-C4-烷基,Mes是至少一种通式2的基团,如果需要,通式3的b具有值 0,1或2,并且c具有值0,1,2,3或4,条件是b和c的值的总和最大为4,其中通式2和3的Mes基团 具有以下结构:其中A,B,Q,X,E,F,VN,m,p,n,q,t和r具有权利要求1中给出的含义,条件是LC有机硅氧烷不构成 苯基酯衍生物的脂族,芳族或杂芳族羧酸。

    Thermostable pigments, films and effect coatings, and mixtures for their production
    5.
    发明授权
    Thermostable pigments, films and effect coatings, and mixtures for their production 有权
    恒温颜料,薄膜和效果涂料及其生产的混合物

    公开(公告)号:US06423246B1

    公开(公告)日:2002-07-23

    申请号:US09546040

    申请日:2000-04-10

    IPC分类号: C09K1952

    CPC分类号: C09K19/38 C09D5/36 C09K19/00

    摘要: A mixture of crosslinkable liquid-crystalline substances having a chiral phase (LC mixture), containing polymerizable groups, where at least 90% of the polymerizable groups are part of molecules containing at least two polymerizable groups (crosslinker molecules), wherein from 3.2 to 15 mmol of polymerizable groups are present per g of LC mixture. The crosslinked pigments show little color shift in the presence of solvents or upon application to substrate different temperatures.

    摘要翻译: 含有可聚合基团的具有手性相(LC混合物)的可交联液晶物质的混合物,其中至少90%的可聚合基团是含有至少两个可聚合基团的分子的一部分(交联剂分子),其中3.2至15 每克液相色谱混合物中存在几毫摩尔的可聚合基团。 交联的颜料在溶剂的存在下或当施加到基底不同的温度时显示出很小的颜色偏移。