Removal of residual acetaldehyde from polyester polymer particles
    12.
    发明授权
    Removal of residual acetaldehyde from polyester polymer particles 有权
    从聚酯聚合物颗粒中除去残留的乙醛

    公开(公告)号:US07863405B2

    公开(公告)日:2011-01-04

    申请号:US11018358

    申请日:2004-12-21

    IPC分类号: C08G63/02

    摘要: In one embodiment, there is provided a process comprising introducing polyester polymer particles containing residual acetaldehyde into a vessel at a temperature within a range of 130° C. to 195° C. to form a bed of particles within the vessel, flowing a gas through at least a portion of the particle bed, and withdrawing finished particles from the vessel having a reduced amount of residual acetaldehyde. In this process, it is not necessary to introduce a hot flow of gas at high flow rates otherwise required to heat up cool particles to a temperature sufficient to strip acetaldehyde. Rather, this process provides a benefit in that, if desired, gas introduced into the vessel at low flow rates and low temperatures can nevertheless effectively strip acetaldehyde in a reasonable time because the hot particles quickly heat a the gas to the particle temperature.

    摘要翻译: 在一个实施方案中,提供了一种方法,其包括将含有残余乙醛的聚酯聚合物颗粒在130℃至195℃的温度范围内引入容器中,以在容器内形成颗粒床,使气体流过 至少一部分颗粒床,并且从具有减少量的残余乙醛的容器中取出成品颗粒。 在该过程中,不需要以高流速引入热流,否则需要将气体加热到足以剥离乙醛的温度。 相反,该方法提供了一个好处,因为如果需要,在低流量和低温下引入容器中的气体可以在合理的时间内有效地剥离乙醛,因为热颗粒将气体快速加热到颗粒温度。

    Oxygen-scavenging polymer blends suitable for use in packaging
    14.
    发明授权
    Oxygen-scavenging polymer blends suitable for use in packaging 有权
    适用于包装的含氧清除聚合物共混物

    公开(公告)号:US07985456B2

    公开(公告)日:2011-07-26

    申请号:US12432288

    申请日:2009-04-29

    IPC分类号: B29D22/00 B29D23/00 B32B1/08

    摘要: Polymer blends are disclosed that comprise one or more polybutadiene homopolymers or copolymers having at least one functionality capable of entering into condensation reactions; one or more polyethylene terephthalate homopolymers or copolymers obtained using a catalyst system comprising aluminum atoms and one or more alkaline earth metal atoms, alkali metal atoms, or alkali compound residues, optionally obtained by a melt-phase polymerization process; and one or more transition metal atoms. The blends are useful for packaging, and exhibit improved oxygen-scavenging activity compared with blends made using many conventional polyethylene terephthalate polymers prepared with conventional catalyst systems.

    摘要翻译: 公开了包含一种或多种具有至少一个能够进行缩合反应的官能团的聚丁二烯均聚物或共聚物的聚合物共混物; 使用包含铝原子和一种或多种碱土金属原子的催化剂体系获得的一种或多种聚对苯二甲酸乙二醇酯均聚物或共聚物,任选地通过熔融相聚合方法获得的碱金属原子或碱金属化合物残基; 和一个或多个过渡金属原子。 与使用常规催化剂体系制备的许多常规聚对苯二甲酸乙二醇酯聚合物制备的共混物相比,共混物可用于包装,并且显示出改进的除氧活性。

    OXYGEN-SCAVENGING POLYMER BLENDS SUITABLE FOR USE IN PACKAGING
    16.
    发明申请
    OXYGEN-SCAVENGING POLYMER BLENDS SUITABLE FOR USE IN PACKAGING 有权
    OXYGEN-SCAVENGING聚合物混合物适用于包装

    公开(公告)号:US20100279048A1

    公开(公告)日:2010-11-04

    申请号:US12432288

    申请日:2009-04-29

    IPC分类号: B65D1/02 C09K15/06

    摘要: Polymer blends are disclosed that comprise one or more polybutadiene homopolymers or copolymers having at least one functionality capable of entering into condensation reactions; one or more polyethylene terephthalate homopolymers or copolymers obtained using a catalyst system comprising aluminum atoms and one or more alkaline earth metal atoms, alkali metal atoms, or alkali compound residues, optionally obtained by a melt-phase polymerization process; and one or more transition metal atoms. The blends are useful for packaging, and exhibit improved oxygen-scavenging activity compared with blends made using many conventional polyethylene terephthalate polymers prepared with conventional catalyst systems.

    摘要翻译: 公开了包含一种或多种具有至少一个能够进行缩合反应的官能团的聚丁二烯均聚物或共聚物的聚合物共混物; 使用包含铝原子和一种或多种碱土金属原子的催化剂体系获得的一种或多种聚对苯二甲酸乙二醇酯均聚物或共聚物,任选地通过熔融相聚合方法获得的碱金属原子或碱金属化合物残基; 和一个或多个过渡金属原子。 与使用常规催化剂体系制备的许多常规聚对苯二甲酸乙二醇酯聚合物制备的共混物相比,共混物可用于包装,并且显示出改进的除氧活性。