Methods for recycling catalyst compositions for aromatic ring halogenation
    5.
    发明授权
    Methods for recycling catalyst compositions for aromatic ring halogenation 失效
    用于再循环用于芳环卤化的催化剂组合物的方法

    公开(公告)号:US07863209B2

    公开(公告)日:2011-01-04

    申请号:US10870352

    申请日:2004-06-16

    摘要: A method for recovering and reusing a ring-halogenation catalyst comprises: (A) contacting an aromatic compound with chlorine or bromine in the presence of a catalyst composition, where the catalyst composition comprises at least one salt comprising a Group 4-13 metal, a lanthanide metal, or an actinide metal; and at least one organic counterion derived from an organic acid having a pKa relative to water of 0 or greater; and at least one organic sulfur compound; to form a first product mixture comprising a monochloro or a monobromo aromatic compound and a Group 4-13 metal halide, a lanthanide metal halide or an actinide metal halide; (B) separating the metal halide from the first product mixture; and (C) contacting at least a portion of the metal halide and an aromatic compound with chlorine or bromine, and at least one organic sulfur compound; to form a second product mixture comprising a monochloro or a monobromo aromatic compound and a Group 4-13 metal halide, a lanthanide metal halide or an actinide metal halide.ving a pKa relative to water of 0 or greater; and at least one organic sulfur compound.

    摘要翻译: 回收和再利用环卤化催化剂的方法包括:(A)在催化剂组合物存在下使芳族化合物与氯或溴接触,其中催化剂组合物包含至少一种包含第4-13族金属的盐, 镧系金属或锕系金属; 以及衍生自相对于水的pKa为0以上的有机酸的至少一种有机抗衡离子; 和至少一种有机硫化合物; 以形成包含一氯或一溴芳族化合物和第4-13族金属卤化物,镧系金属卤化物或锕系金属卤化物的第一产物混合物; (B)从第一产物混合物中分离金属卤化物; 和(C)使金属卤化物和芳族化合物的至少一部分与氯或溴接触,和至少一种有机硫化合物; 形成第二产物混合物,其包含一氯或一溴芳族化合物和第4-13族金属卤化物,镧系元素金属卤化物或锕系金属卤化物,相对于0或更大的水,得到pKa; 和至少一种有机硫化合物。

    Liquid Crystal, and Liquid Crystal Material Combination and Liquid Crystal Display Each Containing the Same
    7.
    发明申请
    Liquid Crystal, and Liquid Crystal Material Combination and Liquid Crystal Display Each Containing the Same 有权
    液晶和液晶材料组合和液晶显示器都包含它们

    公开(公告)号:US20090086139A1

    公开(公告)日:2009-04-02

    申请号:US12018522

    申请日:2008-01-23

    摘要: A liquid crystal is provided, which can be used in a liquid crystal display (LCD) to provide an LCD exhibiting a good transmittance. The liquid crystal according to the invention has the following properties:(i) a dielectric anisotropy (Δε) ranging from about −2.5 to about −5;(ii) a splay elastic constant (K11) ranging from about 1.1×10−11 N to about 1.6×10−11 N; (iii) a bend elastic constant (K33) ranging from about 1.1×10−11 N to about 1.6×10−11 N; and(iv) Δε, K11 (N) and K33 (N) conforming to the following equation: K 11 + K 33  10 × Δ   ɛ 

    摘要翻译: 提供一种液晶,其可用于液晶显示器(LCD)以提供显示出良好透射率的LCD。 根据本发明的液晶具有以下性质:(i)约-2.5至约-5的介电各向异性(Δepsilon); (ii)范围为约1.1×10-11N至约1.6×10-11N的喷射弹性常数(K11); (iii)范围为约1.1×10-11N至约1.6×10-11N的弯曲弹性常数(K33); 和(iv)符合以下等式的Deltaepsilon,K11(N)和K33(N): mfrac> K 11 + K 33 10 x > << / mo> 1.28 x > 10 - 12 mrow> 还提供了一种液晶材料组合,其包括上述根据本发明的液晶和可聚合单体。

      Photopolymerizable oxetane derivative and liquid-crystal composition containing it
      8.
      发明授权
      Photopolymerizable oxetane derivative and liquid-crystal composition containing it 有权
      可光聚合的氧杂环丁烷衍生物和含有它的液晶组合物

      公开(公告)号:US07407691B2

      公开(公告)日:2008-08-05

      申请号:US11085903

      申请日:2005-03-21

      摘要: Provided are a liquid-crystal compound and a liquid-crystal composition containing the compound, of which the advantages are that they show nematic hybrid orientation on a rubbed TAC substrate, they are polymerizable in open air and they readily give a polymer having a high degree of polymerization even when exposed to a relatively small total quantity of light. The films formed by photopolymerizing them keep nematic hybrid orientation. The compound is represented by formula (1): wherein R1 is a hydrogen or an alkyl; R2 is a hydrogen, —OCF3, etc.; A1 is a 1,4-phenylene, etc.; A2 and A3 are independently a 1,4-cyclohexylene, a 1,4-phenylene, etc.; X1 is a single bond, —O—, etc.; X2 and X3 are independently a single bond, —COO—, —C≡C—, —CONH—, etc.; m is an integer of from 0 to 20; and n is 1 or 0.

      摘要翻译: 提供了含有该化合物的液晶化合物和液晶组合物,其优点是在摩擦TAC基材上显示向列混合取向,它们在露天可聚合,并且容易得到具有高度的聚合物 甚至当暴露于相对较小的总光量时。 通过光聚合形成的膜保持向列混合取向。 该化合物由式(1)表示:其中R 1是氢或烷基; R 2是氢,-OCF 3等; A 1是1,4-亚苯基等; A&lt; 2&gt;和&lt; 3&gt; 3独立地是1,4-亚环己基,1,4-亚苯基等; X 1是单键,-O-等; X 2和X 3独立地是单键,-COO-,-C≡C-,-CONH-等; m为0〜20的整数, n为1或0。