Low melting polyester polymers
    68.
    发明授权
    Low melting polyester polymers 有权
    低熔聚酯聚合物

    公开(公告)号:US08968615B2

    公开(公告)日:2015-03-03

    申请号:US12909126

    申请日:2010-10-21

    Abstract: A bulk of polyester polymer particles comprising polyester polymer comprising greater than 75% virgin polyester polymer, the particles having: A) an It.V. of at least 0.72 dl/g, and B) 10 ppm or less of residual acetaldehyde; and C) at least two melting peaks, wherein one of said at least two melting peaks is a low peak melting point within a range of 140° C. to 220° C. and having a melting endotherm area of at least the absolute value of 1 J/g. The particles may also have a degree of crystallinity within a range of 20% and a maximum degree of crystallinity Tcmax defined by the equation: Tcmax=50%−CA−OH where CA is the total mole % of all carboxylic acid residues other than terephthalic acid residues, based on 100 mole % of carboxylic acid residues, and OH is the total mole % of all hydroxyl functional compound residues other than ethylene glycol residues, based on 100 mole % of hydroxyl functional compounds residues. The preforms and bottles made from these particles can be obtained by melt processing these particles at either lower overall power, faster screw speeds, lower residence time, or lower overall cycle time to thereby reduce the level of residual acetaldehyde generated in the melt.

    Abstract translation: 包含大于75%的原始聚酯聚合物的聚酯聚合物的大部分聚酯聚合物颗粒,该颗粒具有:A)It.V. 至少0.72dl / g,B)10ppm或更少的残留乙醛; 和C)至少两个熔融峰,其中所述至少两个熔融峰中的一个是在140℃至220℃的范围内的低峰值熔点,并且其熔融吸热面积至少为 1 J / g。 颗粒也可以具有在20%范围内的结晶度和最大结晶度Tcmax,其由下式定义:Tcmax = 50%-CA-OH,其中CA是除对苯二甲酸之外的所有羧酸残基的总摩尔% 基于100摩尔%的羧酸残基的酸残基,OH是基于100摩尔%的羟基官能化合物残基的除乙二醇残基之外的所有羟基官能化合物残基的总摩尔%。 由这些颗粒制成的预成型件和瓶可以通过以更低的总功率,更快的螺杆速度,更低的停留时间或更低的总循环时间熔融加工这些颗粒来获得,从而降低熔体中产生的残余乙醛的水平。

    PROCESS FOR THE CONTINUOUS PRODUCTION OF POLYESTERS
    69.
    发明申请
    PROCESS FOR THE CONTINUOUS PRODUCTION OF POLYESTERS 有权
    连续生产聚酯的方法

    公开(公告)号:US20110263799A1

    公开(公告)日:2011-10-27

    申请号:US13056395

    申请日:2009-07-29

    CPC classification number: C08G63/785 C08G63/08

    Abstract: A continuous process for the ring-opening polymerisation of cyclic ester monomers to form aliphatic polyesters at a temperature between 100-240° C. which includes a) continuously providing cyclic ester monomer and polymerisation catalyst to a continuous mixing reactor, the reactor being operated at conditions effective for polymerisation to form a pre-polymerised reaction mixture,b) continuously removing pre-polymerised reaction mixture from the continuous mixing reactor and continuously providing pre-polymerised reaction mixture to a plug flow reactor, the plug flow reactor being operated under polymerisation conditions, wherein the reaction mixture is polymerised to a degree of polymerisation of at least 90%, to form polymer, andc) continuously removing polymer from the plug flow reactor.

    Abstract translation: 在100-240℃的温度下环状酯单体开环聚合以形成脂族聚酯的连续方法,其包括a)连续向连续混合反应器提供环状酯单体和聚合催化剂,反应器在 用于聚合以形成预聚合的反应混合物的条件,b)从连续混合反应器中连续除去预聚合的反应混合物,并将连续提供预聚合的反应混合物连续提供给活塞流反应器,活塞流反应器在聚合条件下操作 其中反应混合物聚合至至少90%的聚合度,以形成聚合物,和c)从活塞流反应器中连续除去聚合物。

    Method of Producing a Component of a Device, and the Resulting Components and Devices
    70.
    发明申请
    Method of Producing a Component of a Device, and the Resulting Components and Devices 有权
    制造设备的组件的方法,以及产生的组件和设备

    公开(公告)号:US20110250401A1

    公开(公告)日:2011-10-13

    申请号:US13133001

    申请日:2009-12-30

    Abstract: The present method comprises providing a flexible web substrate (e.g., polymeric flexible web substrates) that forms at least part of a component of a device, coating so as to wet-out on and cover all or a substantial portion of a major surface on one side or both sides of the flexible web substrate with flowable polymeric material, while the flexible web substrate is moving in a down-web direction, and solidifying the polymeric material so as to form one cleaning layer on the major surface of one side or both sides of the flexible web substrate. The present invention can be utilized in a continuous in-line manufacturing process. In applications of the present invention where the flexible web substrate will not form a component of a device, the present invention broadly provides a method for cleaning particles from a flexible web of indefinite length. Each cleaning layer forms a substantially adhesive bond to the major surface that is readily removable without damaging or leaving a substantial residue of cleaning layer material on the major surface. A substantial number of the particles that were on this major surface are captured by and removable with the cleaning layer.

    Abstract translation: 本发明的方法包括提供形成装置的部件的至少一部分的柔性卷筒纸基材(例如,聚合物柔性幅材基材),以便在一个主要表面上的全部或大部分上覆盖并覆盖 柔性幅材基材的侧面或两侧具有可流动的聚合物材料,同时柔性幅材基片沿下纸幅方向移动,并固化聚合物材料,以在一侧或两侧的主表面上形成一个清洁层 的柔性网状基材。 本发明可以在连续的在线制造过程中使用。 在本发明的应用中,其中柔性网状基底不会形成装置的部件,本发明广泛地提供了一种从不确定长度的柔性网状物清洁颗粒的方法。 每个清洁层与主表面形成基本上粘合的粘合剂,其易于去除,而不会在主表面上损坏或留下大量残留的清洁层材料。 在该主表面上的大量颗粒被清洁层捕获并且可以与清洁层一起移除。

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