Process for removing metal species in the presence of hydrogen and a porous material and polyester polymer containing reduced amounts of metal species
    4.
    发明授权
    Process for removing metal species in the presence of hydrogen and a porous material and polyester polymer containing reduced amounts of metal species 有权
    在氢气和多孔材料存在下除去金属物质的方法和含有减少量金属物质的聚酯聚合物的方法

    公开(公告)号:US08530609B2

    公开(公告)日:2013-09-10

    申请号:US12104514

    申请日:2008-04-17

    IPC分类号: C08G63/00

    摘要: A process for removing metal species from a composition comprising contacting: a. an oligomer mixture stream comprising the monomers of a partially aromatic polyester polymer and at least one metal species, or b. a molten polyester polymer stream comprising partially aromatic polyester polymers and at least one metal species, with a non-catalytic porous material in the presence of hydrogen to produce a treated stream containing a reduced amount of at least one metal species. There are provided compositions comprising a partially aromatic polyester polymer having an It.V. of at least 0.50 produced in a direct esterification melt phase process, from greater than 0 to less than 50 ppm antimony, and less than 40 ppm cobalt, or produced in an ester exchange melt phase process, having from greater than zero to less than 5 ppm titanium and less than 10 ppm manganese.

    摘要翻译: 一种用于从组合物中除去金属物质的方法,包括使a: 包含部分芳族聚酯聚合物和至少一种金属物质的单体的低聚物混合物流,或b。 包含部分芳族聚酯聚合物和至少一种金属物质的熔融聚酯聚合物流,在氢气存在下具有非催化多孔材料,以产生含有减少量的至少一种金属物质的处理流。 提供了包含具有It.V.的部分芳族聚酯聚合物的组合物。 在直接酯化熔融相方法中生产的至少0.50,从大于0到小于50ppm的锑和小于40ppm的钴,或者在酯交换熔融相方法中产生,具有大于零至小于5 ppm的钛和小于10ppm的锰。

    Hydrogenation process and catalysts
    5.
    发明申请
    Hydrogenation process and catalysts 失效
    氢化工艺和催化剂

    公开(公告)号:US20070255070A1

    公开(公告)日:2007-11-01

    申请号:US11787496

    申请日:2007-04-17

    申请人: Zhufang Liu

    发明人: Zhufang Liu

    IPC分类号: C07C69/74

    摘要: Disclosed is a process for the preparation of dimethyl cyclohexanedicarboxylates by the hydrogenation of the corresponding dimethyl benzenedicarboxylate ester in the presence of supported catalysts comprising (i) a Group VIII metal and (ii) a catalyst support material selected from graphite and silicon carbide.

    摘要翻译: 公开了通过在负载催化剂的氢化下相应的二苯基二羧酸酯的制备来制备环己烷二羧酸二甲酯的方法,所述载体催化剂包含(ⅰ)第Ⅷ族金属和(ⅱ)选自石墨和碳化硅的催化剂载体材料。

    Hydrotreating polyester precursors
    10.
    发明授权
    Hydrotreating polyester precursors 有权
    加氢处理聚酯前体

    公开(公告)号:US07067615B1

    公开(公告)日:2006-06-27

    申请号:US11151085

    申请日:2005-06-13

    IPC分类号: C08F6/00

    CPC分类号: C08G63/78

    摘要: A process comprising contacting a liquid polyester stream with hydrogen in the presence of a hydrogenation catalyst comprising a metal supported on the surface of silicon carbide at a metal dispersion of at least 0.5% or graphite at a metal dispersion of at least 10% to produce a treated liquid polyester stream. The treated stream may be polycondensed in the presence of a polycondensation catalyst to produce a polyester polymer having an It.V. of at least 0.55 dL/g. The liquid polyester stream desirably has a composition comprising: a) terephthalic acid residues, isophthalic acid residues, and/or naphthalenedicarboxylic acid residues and b) an average degree of polymerization of 0.5 to 20 and c) an acid number ranging from 5 to 600.

    摘要翻译: 一种方法包括在氢化催化剂存在下使液体聚酯流与氢气接触,所述氢化催化剂包含以至少0.5%的金属分散体或至少为10%的金属分散体的石墨支撑在碳化硅表面上的金属,以产生至少10%的金属分散体 处理液体聚酯流。 处理过的物流可以在缩聚催化剂的存在下进行缩聚以制备具有It.V.的聚酯聚合物。 至少0.55dL / g。 液体聚酯流理想地具有包括:a)对苯二甲酸残基,间苯二甲酸残基和/或萘二甲酸残基的组合物,以及b)平均聚合度为0.5至20,c)酸值为5至600。