Oxidation process using tellurium oxide catalysts
    8.
    发明授权
    Oxidation process using tellurium oxide catalysts 失效
    使用碲氧化物催化剂的氧化工艺

    公开(公告)号:US4370497A

    公开(公告)日:1983-01-25

    申请号:US175847

    申请日:1980-08-07

    摘要: The present invention relates to the use of telluroxides as mild and selective oxidizing agents serving to oxidize certain functions, notably >C.dbd.S groups, in the presence of other relatively easily oxidized functions which remain unaffected; telluroxides of interest as oxidizing agents include, for example, compounds of the formula: ##STR1## wherein R and R.sup.1, which may be the same or different, each represent an optionally substituted aryl or heterocyclic group; or R and R.sup.1 together with the tellurium atom therebetween represent a heterocyclic ring, which may contain one or more further heteroatoms, and which may carry substituents and/or fused aromatic rings.

    摘要翻译: 本发明涉及在存在其它相对容易被氧化的功能而不受影响的情况下,用作氧化某些功能的特氟隆(特别是> C = S基)的氟氯化铁作为温和和选择性氧化剂的用途; 感兴趣的氧化铁作为氧化剂包括例如下式的化合物:其中R和R 1可以相同或不同,各自表示任选取代的芳基或杂环基; 或R和R 1与它们之间的碲原子表示杂环,其可以含有一个或多个另外的杂原子,并且其可以携带取代基和/或稠合芳环。

    Associative thickeners for aqueous systems
    10.
    发明授权
    Associative thickeners for aqueous systems 有权
    用于水性体系的缔合增稠剂

    公开(公告)号:US07495050B2

    公开(公告)日:2009-02-24

    申请号:US10923271

    申请日:2004-08-20

    摘要: Thiocarbonate compounds which, in one embodiment, are utilized as a rheology modifier or associative thickener. The thiocarbonate compounds thicken or increase the viscosity of a composition, preferably an aqueous composition when used in an effective amount. In one preferred embodiment, the thiocarbonate compounds include at least one hydrophilic group containing repeat unit such as derived from acrylic acid, and at least one hydrophobic group to enhance association with other compounds and thus increase viscosity of a composition. Aqueous composition comprising a latex and thiocarbonate associative thickeners are described.

    摘要翻译: 在一个实施方案中,其用作流变改性剂或缔合增稠剂的硫代碳酸酯化合物。 当以有效量使用时,硫代碳酸酯化合物增稠或增加组合物的粘度,优选水性组合物。 在一个优选的实施方案中,硫代碳酸酯化合物包括至少一个含有亲水基团的重复单元,例如衍生自丙烯酸的至少一个疏水基团,以增强与其它化合物的缔合,从而提高组合物的粘度。 描述了包含胶乳和硫代碳酸酯缔合增稠剂的水性组合物。