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9 条记录 (耗时 0.013 秒)

    Process for improving the shelf life of a hindered phenol antioxidant
    5.
    发明授权
    Process for improving the shelf life of a hindered phenol antioxidant 失效
    改善受阻酚抗氧化剂保质期的方法

    公开(公告)号：US06806304B2

    公开(公告)日：2004-10-19

    申请号：US10128921

    申请日：2002-04-24

    申请人： Brent M. Sanders ,  Darryl R. Kincaid ,  Sari-Beth Samuels

    发明人： Brent M. Sanders ,  Darryl R. Kincaid ,  Sari-Beth Samuels

    IPC分类号： C08L536

    CPC分类号： C07C37/88 ,  C07C2601/08 ,  C07C2601/14 ,  C07C2603/68 ,  C08K5/13 ,  C08K5/372 ,  C07C39/06 ,  C07C39/17 ,  C07C39/08 ,  C07C39/16

    摘要： The present invention relates to a process for improving the shelf life of a hindered phenol antioxidant comprising the step of intimately mixing the hindered phenol antioxidant with a sulfur-containing peroxide decomposer. The inventors have discovered that mixing the peroxide decomposer with the hindered phenol antioxidant reduces the tendency of hindered phenols to yellow with age. This increases the desirability of the hindered phenol because it will not impart color to polymer systems. The present invention also relates to a composition produced from the process described above, and stabilized compositions and additive packages containing the composition produced from the above-described process.

    摘要翻译： 本发明涉及一种改善受阻酚抗氧化剂的保质期的方法，其包括将受阻酚抗氧化剂与含硫过氧化物分解剂紧密混合的步骤。 本发明人已经发现，将过氧化物分解剂与受阻酚抗氧化剂混合，降低了受阻酚随着年龄变黄的倾向。 这增加了受阻酚的合适性，因为它不会赋予聚合物体系的颜色。 本发明还涉及由上述方法制备的组合物，以及包含由上述方法制备的组合物的稳定的组合物和添加剂包。

    Process for the production of polyethylene with a broad and/or bimodal molecular weight distribution
    7.
    发明授权
    Process for the production of polyethylene with a broad and/or bimodal molecular weight distribution 失效
    用于生产具有宽和/或双峰分子量分布的聚乙烯的方法

    公开(公告)号：US4918038A

    公开(公告)日：1990-04-17

    申请号：US114040

    申请日：1987-10-29

    申请人： Sari-Beth Samuels ,  Frederick J. Karol

    发明人： Sari-Beth Samuels ,  Frederick J. Karol

    IPC分类号： C08F4/638 ,  C08F4/60 ,  C08F4/62 ,  C08F4/658 ,  C08F4/68 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02

    CPC分类号： C08F10/02

    摘要： A process for the production of an ethylene homopolymer or copolymer comprising passing ethylene with or without at least one alpha-olefin comonomer having 3 or more carbon atoms into contact with a mixed catalyst system, under polymerization conditions, said mixed catalyst system comprising:(a) the reaction product of (i) a vanadium halide having the formula VX.sub.3 wherein X is chlorine, bromine, or iodine and each X is alike or different; (ii) a modifier having the formula BX.sub.3 or AlR.sub.(3-a) X.sub.a and (iii) an electron donor(b) one of the following:(i) a complex having the formula ZrMg.sub.b X.sub.c (ED).sub.d ; or(ii) a vanadium oxy compound having the formula VOX.sub.3, VOX.sub.2, VOX, or VO.sub.2 X wherein X is as defined above, or VO(OR).sub.3(c) a hydrocarbyl aluminum cocatalyst; and(d) a halocarbon promoter having the formula R.sub.e CX.sub.(4-e) wherein R is hydrogen or an unsubstituted or halo substituted alkyl radical having 1 to 6 carbon atoms; each R is alike or different; X is chlorine, bromine, iodine, or fluorine; each X is alike or different and e is 0, 1, or 2 provided that, if no fluorine is present, e is 2.

    Methods and compositions for protecting polymers from UV light
    9.
    发明授权
    Methods and compositions for protecting polymers from UV light 失效
    用于保护聚合物免受紫外光的方法和组合物

    公开(公告)号：US6051164A

    公开(公告)日：2000-04-18

    申请号：US70627

    申请日：1998-04-30

    申请人： Sari-Beth Samuels

    发明人： Sari-Beth Samuels

    IPC分类号： C08L101/00 ,  C08J5/18 ,  C08K5/00 ,  C08K5/34 ,  C08K5/3435 ,  C08K5/3492 ,  C09K15/08

    CPC分类号： C08K5/34 ,  C08K5/3435 ,  C08K5/3492 ,  C08K5/34926

    摘要： A polymeric article, such as an extruded or molded article or a biaxially oriented tape or film, and a method of stabilizing such a polymeric article to protect the article from degradation due to exposure to UV light. The article is formed by blending a polymeric material with from about 50 to about 5,000 ppm of at least one ortho hydroxy tris-aryl triazine light absorber and from about 500 ppm to about 1.25 percent of at least one oligomeric, polymeric, or high molecular weight HALS having a molecular weight of at least about 500, wherein the weight ratio of HALS to triazine light absorber is from about 3:1 to about 20:1, to form a stabilized polymeric composition, and forming an extruded or molded article or a biaxially oriented tape or film from the stabilized polymeric composition.

    摘要翻译： 聚合物制品，例如挤出或模塑制品或双轴取向的胶带或膜，以及稳定这种聚合物品以保护物品免受暴露于紫外线的影响的方法。 该制品通过将聚合物材料与约50至约5,000ppm的至少一种邻羟基三 - 芳基三嗪光吸收剂和约500ppm至约1.25％的至少一种低聚物，聚合物或高分子量 具有至少约500的分子量的HALS，其中HALS与三嗪光吸收剂的重量比为约3:1至约20:1，以形成稳定的聚合物组合物，并形成挤出或模塑制品或双轴 来自稳定的聚合物组合物的取向胶带或膜。