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    • 2. 发明授权
    • Hydrotreating polyester precursors
    • 加氢处理聚酯前体
    • US07067615B1
    • 2006-06-27
    • US11151085
    • 2005-06-13
    • Zhufang LiuJeff Scott HowellCharles Edwan Sumner, Jr.
    • Zhufang LiuJeff Scott HowellCharles Edwan Sumner, Jr.
    • C08F6/00
    • C08G63/78
    • 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.
    • 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。
    • 4. 发明申请
    • PROCESS FOR REMOVING METAL SPECIES IN THE PRESENCE OF HYDROGEN AND A POROUS MATERIAL AND POLYESTER POLYMER CONTAINING REDUCED AMOUNTS OF METAL SPECIES
    • 在氢和多孔材料存在下去除金属物质的过程和含金属物质减少量的聚酯聚合物
    • US20080194750A1
    • 2008-08-14
    • US12104514
    • 2008-04-17
    • Zhufang LiuJeff Scott Howell
    • Zhufang LiuJeff Scott Howell
    • C08K3/00C08K3/10
    • C22B23/026C08G63/78C08G63/82C08G63/90C08K3/32C22B3/24Y02P10/224Y02P10/234
    • 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 is also provided a composition 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. There is also provided a composition comprising partially aromatic polyester polymers having an It.V. of at least 0.50 produced in an ester exchange melt phase process, from greater than zero to less than 5 ppm titanium, and less than 10 ppm manganese.
    • 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。 还提供了一种组合物,其包含具有It.V.的部分芳族聚酯聚合物。 在直接酯化熔融相方法中产生的至少为0.50,大于0至小于50ppm的锑和小于40ppm的钴。 还提供了包含部分芳族聚酯聚合物的组合物,其具有It.V. 在酯交换熔融相方法中产生的至少为0.50,从大于零至小于5ppm的钛和小于10ppm的锰。
    • 5. 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
    • 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
    • US07390869B2
    • 2008-06-24
    • US11151084
    • 2005-06-13
    • Zhufang LiuJeff Scott Howell
    • Zhufang LiuJeff Scott Howell
    • C08F6/00
    • C22B23/026C08G63/78C08G63/82C08G63/90C08K3/32C22B3/24Y02P10/224Y02P10/234
    • 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 is also provided a composition 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. There is also provided a composition comprising partially aromatic polyester polymers having an It.V. of at least 0.50 produced in an ester exchange melt phase process, from greater than zero to less than 5 ppm titanium, and less than 10 ppm manganese.
    • 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。 还提供了一种组合物,其包含具有It.V.的部分芳族聚酯聚合物。 在直接酯化熔融相方法中产生的至少为0.50,大于0至小于50ppm的锑和小于40ppm的钴。 还提供了包含部分芳族聚酯聚合物的组合物,其具有It.V. 在酯交换熔融相方法中产生的至少为0.50,从大于零至小于5ppm的钛和小于10ppm的锰。