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    • 9. 发明申请
    • HYDROTREATING POLYESTER PRECURSORS
    • 加压聚酯前体
    • WO2006138030A3
    • 2007-05-24
    • PCT/US2006020122
    • 2006-05-24
    • EASTMAN CHEM CO
    • LIU ZHUFANGHOWELL JEFF SCOTTSUMNER CHARLES EDWAN JR
    • B01J31/00C07C27/04C07C35/21C07C209/00C08F6/00C08G75/02C08J3/00
    • 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 polycpndensed 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, 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聚稠化,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含以下组成的组合物:(a)对苯二甲酸残基,间苯二甲酸残基和/或萘二甲酸残基,和(b)平均聚合度为0.5至20,(c)酸值为5 到600。