Stable aqueous solutions comprising titanium and zinc and process therewith
    2.
    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。

    PROCESS FOR PRODUCTION OF POLYESTERS
    3.
    发明申请
    PROCESS FOR PRODUCTION OF POLYESTERS 审中-公开
    生产聚酯的方法

    公开(公告)号:US20120115997A1

    公开(公告)日:2012-05-10

    申请号:US13057563

    申请日:2009-07-31

    CPC classification number: C08G63/85 C08G63/78 C08G63/826 C08G63/83 C08G63/84

    Abstract: The present invention relates to a process for producing a polyester comprising: (a) forming a polyester with an intrinsic viscosity of at least about 0.65, wherein said forming of the polyester comprises use of a catalyst; and (b) adding a phosphorous compound to the polyester after the forming of step (a), wherein said phosphorous compound comprises at least one member selected from the group consisting of trialkyl phosphate, trialkyl phosphonoacetate, monoalkyl phosphate, dialkyl phosphate, trialkyl phosphite, triaryl phosphite, tris alkylaryl phosphite, and mixtures thereof. The present invention also includes compositions produced by process of the present invention and articles comprising those compositions.

    Abstract translation: 本发明涉及一种生产聚酯的方法,包括:(a)形成特性粘度为至少约0.65的聚酯,其中所述聚酯的形成包括使用催化剂; 和(b)在形成步骤(a)之后,向聚酯中加入磷化合物,其中所述的磷化合物包括选自磷酸三烷基酯,膦酰基乙酸三烷基酯,磷酸烷基酯,磷酸二烷基酯,磷酸三烷基酯, 亚磷酸三芳基酯,亚磷酸三烷基芳酯及其混合物。 本发明还包括通过本发明的方法制备的组合物和包含这些组合物的制品。

    VARIABLE PRESSURE DROP UP FLOW-PRE-POLYMERIZER (UFPP) SYSTEMS AND METHODS
    4.
    发明申请
    VARIABLE PRESSURE DROP UP FLOW-PRE-POLYMERIZER (UFPP) SYSTEMS AND METHODS 审中-公开
    可变压力下降流量预聚合器(UFPP)系统和方法

    公开(公告)号:US20150051367A1

    公开(公告)日:2015-02-19

    申请号:US14125013

    申请日:2012-06-04

    Abstract: Disclosed are processes and systems for manufacturing polyethylene terephthalate (PET) and pre-polymer. The processes and systems use a variable pressure drop up-flow-pre-polymerizer configuration. The pressure profile in the UFPP can be selected to beneficially change the relative reaction rates of the polymerization and esterification reactions. This design maximizes the esterification carried out in the UFPP, while still producing a pre-polymer with the optimum carboxyl end groups concentration (e.g., about 30μ equiv./g to 60μ equiv./g) to maximize finisher productivity. This can result in a reduction of the size and cost of the esterifier required for a given plant throughput.

    Abstract translation: 公开了用于制造聚对苯二甲酸乙二醇酯(PET)和预聚物的方法和系统。 过程和系统使用可变的压降上升预聚合器配置。 可以选择UFPP中的压力分布,有利地改变聚合和酯化反应的相对反应速率。 该设计使得在UFPP中进行的酯化最大化,同时仍然产生具有最佳羧基端基浓度(例如约30μ当量/ g至60μ当量/ g)的预聚物,以最大化提高生产率。 这可能导致给定工厂产量所需的酯化剂的尺寸和成本的降低。

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