Method and catalyst composition for producing aromatic carbonates using activating solvents
    121.
    发明授权
    Method and catalyst composition for producing aromatic carbonates using activating solvents 失效
    使用活化溶剂生产芳族碳酸酯的方法和催化剂组合物

    公开(公告)号:US06903049B2

    公开(公告)日:2005-06-07

    申请号:US09683865

    申请日:2002-02-25

    Abstract: The present disclosure is directed to a catalyst composition used in the production of aromatic carbonates, and in particular to a catalyst composition which comprises an activating solvent. In one embodiment the disclosure relates to a catalyst composition which comprises to a combination of two activating solvents, a first activating solvent chosen for its coordinative properties, and a second activating solvent chosen for its dielectric constant properties. In alternative embodiments, the present disclosure also pertains to a method for producing aromatic carbonates using the catalyst compositions disclosed herein.

    Abstract translation: 本公开涉及用于制备芳族碳酸酯的催化剂组合物,特别涉及包含活化溶剂的催化剂组合物。 在一个实施方案中,本公开涉及一种催化剂组合物,其包含两种活化溶剂,根据其配位性质选择的第一活化溶剂和根据其介电常数性质选择的第二活化溶剂的组合。 在替代实施方案中,本公开还涉及使用本文公开的催化剂组合物生产芳族碳酸酯的方法。

    Stable aqueous solutions comprising titanium and zinc and process therewith
    127.
    发明授权
    Stable aqueous solutions comprising titanium and zinc and process therewith 失效
    包含钛和锌的稳定水溶液并用其处理

    公开(公告)号:US06855797B2

    公开(公告)日:2005-02-15

    申请号:US10132347

    申请日:2002-04-25

    Abstract: A process that can be used as catalyst in esterification, transesterification or polycondensation is disclosed, which comprises a stable solution comprising (a) titanium in the form of a titanium α-hydroxycarboxylic acid or its salt, (b) a C1-C6 carboxylic acid, and (c) zinc in the form of a water-soluble zinc salt, and (d) water. Also disclosed is an esterification, transesterification or polycondensation process, which comprises contacting, in the presence of the solution process, an organic acid or its ester or its salt with an alcohol, optionally in the presence of a phosphorus compound, an organic or inorganic toning agent such as cobalt acetate, or combinations thereof. The process can also comprise combining aqueous solutions of a titanium α-hydroxycarboxylic acid or its salt and a zinc salt in an alcohol to produce an alcohol solution contacting the alcohol solution with a mixture comprising organic acid or its ester or its salt and a second alcohol, or comprise combining an aqueous solutions of a titanium α-hydroxycarboxylic acid or its salt and aqueous solution of a zinc salt with the mixture.

    Abstract translation: 公开了可用作酯化,酯交换或缩聚催化剂的方法,其包括稳定的溶液,其包含(a)钛α-羟基羧酸或其盐形式的钛,(b)C1-C6羧酸 ,(c)水溶性锌盐形式的锌,(d)水。 还公开了酯化,酯交换或缩聚方法,其包括在溶液方法存在下,有机酸或其酯或其盐与醇,任选在磷化合物,有机或无机调色剂 例如乙酸钴或其组合。 该方法还可以包括将钛α-羟基羧酸或其盐的水溶液与锌盐的醇溶液混合,以产生与醇溶液接触的醇溶液与包含有机酸或其酯或其盐的混合物和第二醇 或者包括将钛α-羟基羧酸或其盐的水溶液与锌盐的水溶液与混合物组合。

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