Thermoplastic molding compositions and polymer additives
    1.
    发明授权
    Thermoplastic molding compositions and polymer additives 有权
    热塑性成型组合物和聚合物添加剂

    公开(公告)号:US06936204B2

    公开(公告)日:2005-08-30

    申请号:US10046624

    申请日:2001-10-29

    申请人: Sahar Al-Malaika

    发明人: Sahar Al-Malaika

    CPC分类号: C08K5/053 C08L67/02

    摘要: A thermoplastic molding composition for making a molded article comprising (i) a polymer component selected from the group consisting of polyethylene terephthalate, a copolyester of polyethylene terephthalate, and a combination of polyethylene terephthalate and a copolyester of polyethylene terephthalate, and (ii) a polymer additive comprising one or more than one hydroxylic compound comprising from 3 to about 8 hydroxy groups. The amount of one or more than one hydroxylic compound is sufficient to decrease the level of acetaldehyde in the molded article that would be present without including the one or more than one hydroxylic compound in the thermoplastic molding composition. A method for making a molded article with decreased levels of acetaldehyde comprising, first, providing a thermoplastic molding composition according to the present invention, and, second, injection molding the thermoplastic molding composition to form a molded article.

    摘要翻译: 一种用于制造模塑制品的热塑性模塑组合物,其包含(i)聚对苯二甲酸乙二醇酯,聚对苯二甲酸乙二醇酯的共聚酯和聚对苯二甲酸乙二醇酯与聚对苯二甲酸乙二醇酯的共聚酯的组合的聚合物组分,和(ii)聚合物 添加剂,其包含一种或多于一种包含3至约8个羟基的羟基化合物。 一种或多于一种羟基化合物的量足以降低在热塑性模塑组合物中不包含一种或多于一种羟基化合物的模塑制品中乙醛的含量。 一种制备乙醛水平降低的模塑制品的方法,其包括首先提供本发明的热塑性模塑组合物,其次,注塑成型热塑性模塑组合物以形成模制品。

    Modified polymers
    2.
    发明授权
    Modified polymers 失效
    改性聚合物

    公开(公告)号:US5382633A

    公开(公告)日:1995-01-17

    申请号:US678301

    申请日:1991-04-08

    摘要: A modified polymer is described comprising a thermoplastic polymer composition comprising a graft copolymer between (1) a preformed thermoplastic polymer and (2) a monomer composition comprising (a) at least one polymerisable monomer containing a polymerisable group and at least one functional polymer-modifying group and (b) at least one comonomer containing at least two polymerisable groups, said copolymer being substantially free of unbound monomer. Such polymers can be produced by reacting together, in a melt and in the presence of free radicals whilst applying shear to the melt, the preformed thermoplastic polymer to be modified, the polymerisable monomer, and the comonomer, thereby to graft said monomer to said preformed polymer leaving substantially no unbound monomer, the reaction being continued for a period of time sufficient to produce a graft copolymer that is thermoplastic and can be blended with an unmodified polymer. A free radical generator can be added, if desired.

    摘要翻译: PCT No.PCT / GB89 / 00909 Sec。 371日期:1991年4月8日 102(e)日期1991年4月8日PCT PCT 1989年8月9日PCT公布。 出版物WO90 / 01506 描述了一种改进的聚合物,其包含热塑性聚合物组合物,其包含(1)预成型热塑性聚合物和(2)单体组合物之间的接枝共聚物,所述单体组合物包含(a)至少一种含可聚合基团的可聚合单体和 至少一个官能聚合物改性基团和(b)至少一种含有至少两个可聚合基团的共聚单体,所述共聚物基本上不含未结合的单体。 这样的聚合物可以通过在熔体中和在存在自由基的同时在熔体,预先形成的待修饰的预制热塑性聚合物,可聚合单体和共聚单体上施加剪切力一起反应来制备,从而将所述单体接枝到所述预成型体 聚合物基本上不留下未结合的单体,反应持续一段时间足以产生热塑性的接枝共聚物,并可与未改性的聚合物共混。 如果需要,可以添加自由基发生剂。

    STABILISED CROSS-LINKED POLYMERS
    3.
    发明申请
    STABILISED CROSS-LINKED POLYMERS 有权
    稳定的交联聚合物

    公开(公告)号:US20120295048A1

    公开(公告)日:2012-11-22

    申请号:US13575245

    申请日:2011-01-28

    IPC分类号: C08F255/02 B32B1/08 C08J3/28

    摘要: The present invention is concerned with the process for preparing a cross-linked stabilised polymer composition using at least one graftable polymer stabiliser, and the subsequent use of that composition for forming pipes, for example PEX pipes. The graftable stabiliser becomes anchored to the polymer such that stabiliser activity is retained in the cross-linked product. Cross-linking can be achieved by conventional processes such as PEXa, PEXb and PEXc. Embodiments demonstrate excellent levels of antioxidant retention (as measured by oxidative induction retention after exhaustive solvent extraction) and the cross-linked product are suitable for portable water applications, including hot water applications.

    摘要翻译: 本发明涉及使用至少一种可接枝的聚合物稳定剂制备交联稳定的聚合物组合物的方法,以及该组合物随后用于形成管道,例如PEX管道。 可接枝稳定剂固定在聚合物上,使得稳定剂活性保留在交联产物中。 交联可以通过常规方法如PEXa,PEXb和PEXc来实现。 实施例表现出优异的抗氧化剂保留水平(通过彻底溶剂萃取后的氧化诱导保留测量),交联产物适用于便携式水应用,包括热水应用。

    Stabilised cross-linked polymers
    5.
    发明授权
    Stabilised cross-linked polymers 有权
    稳定的交联聚合物

    公开(公告)号:US08889239B2

    公开(公告)日:2014-11-18

    申请号:US13575245

    申请日:2011-01-28

    摘要: The present invention is concerned with the process for preparing a cross-linked stabilized polymer composition using at least one graftable polymer stabilizer, and the subsequent use of that composition for forming pipes, for example PEX pipes. The graftable stabilizer becomes anchored to the polymer such that stabilizer activity is retained in the cross-linked product. Cross-linking can be achieved by conventional processes such as PEXa, PEXb and PEXc. Embodiments demonstrate excellent levels of antioxidant retention (as measured by oxidative induction retention after exhaustive solvent extraction) and the cross-linked product are suitable for portable water applications, including hot water applications.

    摘要翻译: 本发明涉及使用至少一种可接枝的聚合物稳定剂制备交联稳定的聚合物组合物的方法,以及该组合物随后用于形成管道,例如PEX管道。 可接枝稳定剂固定在聚合物上,使得稳定剂活性保留在交联产物中。 交联可以通过常规方法如PEXa,PEXb和PEXc来实现。 实施例表现出优异的抗氧化剂保留水平(通过彻底溶剂萃取后的氧化诱导保留测量),交联产物适用于便携式水应用,包括热水应用。