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57 条记录 (耗时 0.029 秒)

    Measurement and preparation of branched vinyl polymers
    1.
    发明授权
    Measurement and preparation of branched vinyl polymers 失效
    支链乙烯基聚合物的测量和制备

    公开(公告)号：US07514516B2

    公开(公告)日：2009-04-07

    申请号：US11208909

    申请日：2005-08-22

    申请人： Brad Stiles ,  Jose M. Sosa ,  Cyril Chevillard ,  Aron Griffith ,  Jay L. Reimers

    发明人： Brad Stiles ,  Jose M. Sosa ,  Cyril Chevillard ,  Aron Griffith ,  Jay L. Reimers

    IPC分类号： C08F212/34 ,  C08F212/36 ,  C08F2/38 ,  G01N30/84

    CPC分类号： C08F2/00 ,  C08F112/08 ,  C08F279/02 ,  C08F2400/02 ,  C08L25/06 ,  C08L2205/02 ,  C08L2666/04 ,  C08F212/08

    摘要： Disclosed are novel non-linear vinyl polymers comprised of a multifunctional peroxide, and a cross-linking agent and/or a chain transfer agent, and methods of making such polymers having: at least 0.03 branches/1000 backbone carbons; linear portions with a molecular weight (Mw) of 350,000 or less; 0.2 to 3.0 branches/molecule; or, a Mz/Mw of from 1.7 to 5.7. Methods of quantifying branching are disclosed using a linear reference having 0.0 to 0.06 branches/1000 backbone carbons along with SEC techniques and measurements of molecular weight, molecular size, and concentration. Also discovered is a vinyl polymer resin comprised of from 0.1 to 50 weight percent of non-linear polymers having at least 0.06 branches/1000 backbone carbons, where branching is measured using a heat polymerized polystyrene having from 0.0 to 0.06 branches/1000 backbone carbons as a linear reference.

    摘要翻译： 公开了由多官能过氧化物，交联剂和/或链转移剂组成的新型非线性乙烯基聚合物，以及制备这种聚合物的方法，其具有：至少0.03个支链/ 1000个骨架碳; 分子量（Mw）为350,000以下的线性部分; 0.2〜3.0支/分子; 或者为1.7至5.7的Mz / Mw。 使用具有0.0至0.06个支链/ 1000个骨架碳的线性参考文献以及SEC技术和分子量，分子大小和浓度的测量来公开定量分支的方法。 还发现了乙烯基聚合物树脂，其由0.1至50重量％的具有至少0.06个支链/ 1000个骨架碳的非线性聚合物组成，其中使用具有0.0至0.06个支链/ 1000个骨架碳的热聚合聚苯乙烯测量分支， 线性参考。

    Optimizing polystyrene in the presence of additives
    2.
    发明授权
    Optimizing polystyrene in the presence of additives 失效
    在添加剂存在下优化聚苯乙烯

    公开(公告)号：US06972311B2

    公开(公告)日：2005-12-06

    申请号：US10445760

    申请日：2003-05-27

    申请人： Cyril Chevillard ,  Jose M. Sosa ,  Aron Griffith ,  Jay Reimers

    发明人： Cyril Chevillard ,  Jose M. Sosa ,  Aron Griffith ,  Jay Reimers

    IPC分类号： C08F2/38 ,  C08F4/36 ,  C08F12/02 ,  C08F279/02 ,  C08L20060101 ,  C08L51/00

    CPC分类号： C08F112/08 ,  C08F279/02 ,  C08F212/08

    摘要： It has been discovered that improved polystyrene products may be obtained by polymerizing styrene in the presence of at least one multifunctional initiator, at least one chain transfer agent, and at least one cross-linking agent. The presence of the multifunctional initiator tends to cause more branched structures in the polystyrene. A mathematical model that helps optimize the levels of these additives for given molecular weights, melt flow indices (MFIs) and zero shear viscosities (η0) has also been discovered.

    摘要翻译： 已经发现，通过在至少一种多官能引发剂，至少一种链转移剂和至少一种交联剂的存在下聚合苯乙烯可以获得改进的聚苯乙烯产物。 多官能引发剂的存在倾向于在聚苯乙烯中引起更多的支化结构。 还发现了一种有助于优化给定分子量，熔体流动指数（MFI）和零剪切粘度（eta <0>）的这些添加剂水平的数学模型。

    Use of accelerators in free-radical polymerizations of styrene
    3.
    发明授权
    Use of accelerators in free-radical polymerizations of styrene 失效
    在苯乙烯的自由基聚合中使用促进剂

    公开(公告)号：US06770716B1

    公开(公告)日：2004-08-03

    申请号：US10379052

    申请日：2003-03-04

    申请人： Jose M. Sosa ,  Cyril Chevillard

    发明人： Jose M. Sosa ,  Cyril Chevillard

    IPC分类号： C08F27902

    CPC分类号： C08F12/04 ,  C08F4/06 ,  C08F236/10 ,  C08F279/02 ,  C08F4/32 ,  C08F212/00

    摘要： It has been discovered that certain compounds serve as polymerization accelerators when employed together with peroxide initiators for the polymerization of vinylaromatic monomers. Suitable accelerators that increase the rate of decomposition of the peroxide initiator include, but are not necessarily limited to, hydroperoxides and/or metallic salts. Representative examples of suitable hydroperoxide accelerators include t-butyl hydroperoxide (TBH), cumyl hydroperoxide, and p-isopropyl cumyl hydroperoxide, whereas suitable metallic salt accelerators include cobalt naphthenate and cobalt acetoacetonate. Use of these accelerators when vinylaromatic monomers are polymerized in the presence of polybutadienes and peroxide initiators results in an increase in grafting as compared with similar copolymers made without the accelerator.

    摘要翻译： 已经发现，当与过氧化物引发剂一起用于乙烯基芳族单体的聚合时，某些化合物用作聚合促进剂。 增加过氧化物引发剂分解速率的合适的促进剂包括但不限于氢过氧化物和/或金属盐。 合适的氢过氧化物加速剂的代表性实例包括叔丁基过氧化氢（TBH），枯基氢过氧化物和对异丙基异丙基氢过氧化物，而合适的金属盐促进剂包括环烷酸钴和乙酰丙酮酸钴。 当在聚丁二烯和过氧化物引发剂的存在下聚合乙烯基芳族单体时，使用这些促进剂导致与不使用促进剂的类似共聚物相比，接枝增加。

    Controlling particle size in HIPS using metal carboxylates
    4.
    发明授权
    Controlling particle size in HIPS using metal carboxylates 失效
    使用金属羧酸盐控制HIPS中的粒径

    公开(公告)号：US07041733B2

    公开(公告)日：2006-05-09

    申请号：US10691827

    申请日：2003-10-23

    申请人： Cyril Chevillard ,  Jose M. Sosa

    发明人： Cyril Chevillard ,  Jose M. Sosa

    IPC分类号： C08F279/02 ,  C08F4/38

    CPC分类号： C08F279/02 ,  C08F212/08

    摘要： It has been discovered that certain compounds serve as particle size regulators when employed together with peroxide initiators for the polymerization of vinylaromatic monomers in the presence of diene polymers. Suitable compounds that can control particle size include, but are not necessarily limited to, cobalt naphthenate, zinc naphthenate, iron octoate, calcium octoate, zinc octoate, zinc neodecanoate, potassium octoate, copper naphthenate, calcium versalate, and the like. Use of these metal carboxylates when vinylaromatic monomers are polymerized in the presence of polybutadienes and peroxide initiators results in reduced polybutadiene particles. Grafting and morphology characteristics may also be improved.

    摘要翻译： 已经发现，当与二烯聚合物存在下乙烯基芳族单体聚合时，某些化合物与过氧化物引发剂一起使用时用作粒度调节剂。 可以控制颗粒尺寸的合适的化合物包括但不一定限于环烷酸钴，环烷酸锌，辛酸铁，辛酸钙，辛酸锌，新癸酸锌，辛酸钾，环烷酸铜，三钙酸钙等。 当乙烯基芳族单体在聚丁二烯和过氧化物引发剂存在下聚合时，这些金属羧酸盐的使用导致聚丁二烯颗粒减少。 接枝和形态特征也可以改善。

    Copolymers of Styrene With Alkyl Acrylates and/or Alkyl Methacrylates
    7.
    发明申请
    Copolymers of Styrene With Alkyl Acrylates and/or Alkyl Methacrylates 审中-公开
    苯乙烯与丙烯酸烷基酯和/或烷基甲基丙烯酸酯的共聚物

    公开(公告)号：US20120178873A1

    公开(公告)日：2012-07-12

    申请号：US13323853

    申请日：2011-12-13

    申请人： Jay Reimers ,  Jose M. Sosa

    发明人： Jay Reimers ,  Jose M. Sosa

    IPC分类号： C08L25/14 ,  C08K5/01 ,  C08F220/18

    CPC分类号： C08L25/14 ,  C08L91/00

    摘要： A styrenic copolymer composition including at least one alkyl acrylate and/or alkyl methacrylate comonomer, in which the styrenic copolymer composition is optically clear and has at least two times the impact strength compared to general-purpose polystyrene.

    摘要翻译： 包含至少一种丙烯酸烷基酯和/或甲基丙烯酸烷基酯共聚单体的苯乙烯共聚物组合物，其中苯乙烯共聚物组合物是光学透明的并且具有与通用聚苯乙烯相比的冲击强度的至少两倍。

    Low temperature initiators for improving the rubber phase volume of HIPS formulations
    9.
    发明授权
    Low temperature initiators for improving the rubber phase volume of HIPS formulations 有权
    用于改善HIPS配方橡胶相体积的低温引发剂

    公开(公告)号：US07754817B2

    公开(公告)日：2010-07-13

    申请号：US11262641

    申请日：2005-10-31

    申请人： Jose M. Sosa ,  Shazia Ullah

    发明人： Jose M. Sosa ,  Shazia Ullah

    IPC分类号： C08F263/00 ,  C08F293/00

    CPC分类号： C08F279/02 ,  C08L51/04 ,  C08L2666/02

    摘要： Peroxide initiators are disclosed that can be used at lower temperatures during HIPS production. Enhanced formation of graft polymers between polystyrene and polybutadiene (rubber) can be accomplished by using these lower temperature peroxide initiators that have a 1 hour half-life period at one or more temperatures from 95° C. to less than 111° C. during the pre-inversion stage. “Higher” temperature initiators are used during and/or after inversion. The use of such “low” temperature initiators improves polymerization rates and grafting values, while reducing the swell index and the amount of rubber used, thereby producing improved HIPS more rapidly and at a lower cost. Also disclosed are HIPS compositions and products produced by such “low” temperature initiators as well as a method of producing improved HIPS.

    摘要翻译： 公开了可以在HIPS生产期间在较低温度下使用的过氧化物引发剂。 在聚苯乙烯和聚丁二烯（橡胶）之间增强的接枝聚合物的形成可以通过使用这些低温过氧化物引发剂来实现，该引发剂在一个或多个温度从95℃到小于111℃的时间内具有1小时的半衰期 预转换阶段。 在反转期间和/或之后使用“较高”的温度引发剂。 使用这种“低”温度引发剂提高了聚合速率和接枝值，同时降低了溶胀指数和使用的橡胶的量，从而以更低的成本更快速地生产改进的HIPS。 还公开了由这种“低”温度引发剂生产的HIPS组合物和产物以及生产改进的HIPS的方法。

    POLYSTYRENE HAVING IMPROVED COLOR AND METHODS OF MAKING SAME
    10.
    发明申请
    POLYSTYRENE HAVING IMPROVED COLOR AND METHODS OF MAKING SAME 审中-公开
    具有改进颜色的聚苯乙烯及其制备方法

    公开(公告)号：US20080021157A1

    公开(公告)日：2008-01-24

    申请号：US11456297

    申请日：2006-07-10

    申请人： Jose M. Sosa ,  Billy Ellis ,  Steven D. Gray

    发明人： Jose M. Sosa ,  Billy Ellis ,  Steven D. Gray

    IPC分类号： C08L9/00 ,  C08L25/04 ,  B32B27/00

    CPC分类号： C08F279/02 ,  C08K5/005 ,  C08K5/0091 ,  C08L51/04 ,  C08L2666/04 ,  C08L2666/02

    摘要： A method of improving the color of a high impact polystyrene comprising preparing a reaction mixture comprising styrene, elastomer and at least one antioxidant, and introducing to the reaction mixture a color improving additive prior to the addition of any oxidizing agents to the reaction mixture. A high impact polystyrene comprising a color improving additive, an elastomer and at least one antioxidant wherein the color improving additive is present in the reaction process for production of the high impact polystyrene prior to the introduction of an oxidizing agent and wherein the high impact polystyrene has a 50% to 200% reduction in the Yellowness index as determined in accordance with ASTM E 313 when compared to an otherwise identical polystyrene lacking a color improving additive.

    摘要翻译： 一种改善高抗冲聚苯乙烯颜色的方法，包括制备包含苯乙烯，弹性体和至少一种抗氧化剂的反应混合物，并在向反应混合物中加入任何氧化剂之前向反应混合物中引入增色剂。 包含改色添加剂，弹性体和至少一种抗氧化剂的高抗冲聚苯乙烯，其中在引入氧化剂之前，用于生产高抗冲聚苯乙烯的反应过程中存在改色添加剂，其中高抗冲聚苯乙烯具有 当与没有改色添加剂的其他相同的聚苯乙烯相比时，根据ASTM E 313测定的黄度指数降低50％至200％。