Increasing Rubber Phase Volume in Rubber-Modified Polystyrene
    2.
    发明申请
    Increasing Rubber Phase Volume in Rubber-Modified Polystyrene 有权
    橡胶改性聚苯乙烯橡胶相体积增加

    公开(公告)号:US20120277375A1

    公开(公告)日:2012-11-01

    申请号:US13095940

    申请日:2011-04-28

    IPC分类号: C08F279/02

    摘要: A process for producing rubber modified polymers having an increased rubber phase volume, including feeding a vinyl aromatic monomer and an elastomer to a polymerization reactor to form a reaction mixture, polymerizing the reaction mixture, combining a copolymer to the polymerized reaction mixture to form a combined mixture, subjecting the combined mixture to further polymerization, and obtaining a rubber modified polymer product from the further polymerization.

    摘要翻译: 一种制备具有增加的橡胶相体积的橡胶改性聚合物的方法,包括将乙烯基芳族单体和弹性体加入到聚合反应器中以形成反应混合物,使反应混合物聚合,将共聚物与聚合的反应混合物结合形成 混合物,使组合的混合物进一步聚合,并从进一步的聚合中获得橡胶改性的聚合物产物。

    Polymerization Process Utilizing Hydrogen
    3.
    发明申请
    Polymerization Process Utilizing Hydrogen 审中-公开
    利用氢气的聚合方法

    公开(公告)号:US20110313116A1

    公开(公告)日:2011-12-22

    申请号:US12817269

    申请日:2010-06-17

    申请人: David Knoeppel

    发明人: David Knoeppel

    IPC分类号: C08F4/24

    摘要: Ethylene polymerization processes and polymers formed from the same are discussed herein. The ethylene polymerization processes generally include introducing ethylene monomer into a polymerization reaction zone; introducing a chromium oxide based catalyst into the polymerization reaction zone; introducing a quantity of hydrogen into the polymerization reaction zone; and contacting the ethylene monomer with the chromium oxide based catalyst in the polymerization reaction zone in the presence of hydrogen to form polyethylene, wherein the polyethylene formed in the presence of hydrogen exhibits an MI2 that increases with an increasing quantity of hydrogen and a molecular weight and molecular weight distribution that remains essentially constant with an increasing quantity of hydrogen.

    摘要翻译: 本文讨论了乙烯聚合方法和由其形成的聚合物。 乙烯聚合方法通常包括将乙烯单体引入聚合反应区; 将氧化铬基催化剂引入聚合反应区; 将一定量的氢气引入聚合反应区; 并在氢气存在下使乙烯单体与氧化铬基催化剂在聚合反应区中接触以形成聚乙烯,其中在氢气存在下形成的聚乙烯表现出随着氢气和分子量的增加而增加的MI2, 分子量分布随着氢的增加而保持基本恒定。

    Methods of making styrenic polymeric compositions and methods of using same
    4.
    发明申请
    Methods of making styrenic polymeric compositions and methods of using same 失效
    制备苯乙烯聚合物组合物的方法及其使用方法

    公开(公告)号:US20100184920A1

    公开(公告)日:2010-07-22

    申请号:US12357905

    申请日:2009-01-22

    申请人: David Knoeppel

    发明人: David Knoeppel

    IPC分类号: C08L9/00 C08F12/08

    摘要: A method comprising preparing a reaction mixture comprising a styrene monomer, an antioxidant, and a reaction rate improving additive, contacting the reaction mixture with an antioxidant reactive compound, and placing the reaction mixture under conditions suitable for polymerization of the styrene monomer to a styrenic polymer wherein the polymerization occurs at an overall reaction rate that is increased by equal to or less than 20% when compared to an otherwise similar polymerization process carried out in the absence of the reaction rate improving additive A method comprising preparing a reaction mixture comprising a styrene monomer, an elastomer, an antioxidant, a sodium or calcium salt of an organic acid, and an initiator; and placing the reaction mixture under conditions suitable for polymerization of the styrene monomer to a styrenic polymer, wherein the sodium or calcium salt of an organic acid protects the initiator such that the polymerization is carried out at a reaction rate greater than would otherwise be the rate in the absence of the sodium or calcium salt of an organic acid.

    摘要翻译: 一种包括制备包含苯乙烯单体,抗氧化剂和反应速率改进添加剂的反应混合物的方法,使反应混合物与抗氧化反应性化合物接触,并将反应混合物置于适合于将苯乙烯单体聚合成苯乙烯聚合物的条件下 其中当在不存在反应速率改进添加剂A的情况下进行相似的聚合方法时,聚合反应的总反应速率增加等于或小于20%。该方法包括制备包含苯乙烯单体的反应混合物 ,有机酸的弹性体,抗氧化剂,钠或钙盐和引发剂; 并将反应混合物置于适合于将苯乙烯单体聚合成苯乙烯聚合物的条件下,其中有机酸的钠盐或钙盐保护引发剂,使得聚合反应速率大于否则为反应速率 在没有有机酸的钠盐或钙盐的情况下。

    Methods of making styrenic polymeric compositions and methods of using same
    6.
    发明授权
    Methods of making styrenic polymeric compositions and methods of using same 有权
    制备苯乙烯聚合物组合物的方法及其使用方法

    公开(公告)号:US09012568B2

    公开(公告)日:2015-04-21

    申请号:US13267032

    申请日:2011-10-06

    申请人: David Knoeppel

    发明人: David Knoeppel

    摘要: A method of preparing a reaction mixture comprising a styrene monomer, an antioxidant, and a reaction rate improving additive, contacting the reaction mixture with an antioxidant reactive compound, and placing the reaction mixture under conditions suitable for polymerization of the styrene monomer to a styrenic polymer wherein the polymerization occurs at an overall reaction rate that is increased by equal to or less than 20% when compared to an otherwise similar polymerization process carried out in the absence of the reaction rate improving additive. The reaction rate improving additive can be a sodium or calcium salt of an organic acid.

    摘要翻译: 一种制备包含苯乙烯单体,抗氧化剂和反应速率改进添加剂的反应混合物的方法,使反应混合物与抗氧化反应性化合物接触,并将反应混合物置于适合于将苯乙烯单体聚合成苯乙烯聚合物的条件下 其中当与不存在反应速率改进添加剂时进行的其它相似的聚合方法相比,聚合反应发生在总反应速率上,其增加等于或小于20%。 反应速率改善添加剂可以是有机酸的钠盐或钙盐。

    Ziegler-Natta catalyst
    9.
    发明授权
    Ziegler-Natta catalyst 有权
    齐格勒 - 纳塔催化剂

    公开(公告)号:US08003741B2

    公开(公告)日:2011-08-23

    申请号:US12069190

    申请日:2008-02-07

    IPC分类号: C08F4/50

    摘要: The present invention relates generally to catalysts, to methods of making catalysts, to methods of using catalysts, to methods of polymerizing, and to polymers made with such catalysts. More particularly, the present invention relates to polyolefin catalysts and to Ziegler-Natta catalysts, to methods of making such catalysts, to methods of using such catalysts, to polyolefin polymerization, and to polyolefins.

    摘要翻译: 本发明一般涉及催化剂,制备催化剂的方法,使用催化剂的方法,聚合方法以及用这种催化剂制备的聚合物。 更具体地,本发明涉及聚烯烃催化剂和齐格勒 - 纳塔催化剂,制备这种催化剂的方法,使用这种催化剂的方法,聚烯烃聚合和聚烯烃。

    Cocatalysts for reduction of production problems in metallocene-catalyzed polymerizations
    10.
    发明授权
    Cocatalysts for reduction of production problems in metallocene-catalyzed polymerizations 有权
    用于减少茂金属催化聚合中的生产问题的助催化剂

    公开(公告)号:US07282546B2

    公开(公告)日:2007-10-16

    申请号:US11158454

    申请日:2005-06-22

    IPC分类号: C08F4/42

    摘要: Polyolefins may be prepared using a cocatalyst conforming to the formula: AIRz(Xz)nLzm wherein Rz is a linear or branched organic moiety having at least 5 carbons and Xz is a linear or branched organic moiety having at least 5 carbons or a heterocyclic moiety having at least 4 atoms and can be anionic or di-anionic. The aluminum complex may also be in the form of an adduct complex where Lz is a Lewis base and m=1-3. The cocatalyst Rz components are selected such that they do not react with water under polymerization conditions to form a species that is highly soluble in the polymerization diluent. Use of the specified cocatalyst reduces fouling during metallocene-catalyzed runs and “post-metallocene hangover” when the same production equipment is transitioned to non-metallocene catalyst runs using catalysts such as chromium.

    摘要翻译: 聚烯烃可以使用符合下列公式的助催化剂制备:<?in-line-formula description =“In-line formula”end =“lead”?>空气(X < ?????z???????????????????????????????????????? 其中R z是具有至少5个碳原子的直链或支链有机部分,X是具有至少5个碳原子的直链或支链有机部分或具有至少5个碳原子的杂环部分, 至少4个原子,可以是阴离子或二阴离子。 铝络合物也可以是加合物络合物的形式,其中L z是路易斯碱,m = 1-3。 选择助催化剂R z z组分使得它们在聚合条件下不与水反应以形成高度可溶于聚合稀释剂的物质。 使用特定的助催化剂可以减少金属茂催化运行期间的结垢和“后金属茂宿醉”,当相同的生产设备使用催化剂如铬转变为非茂金属催化剂运行时。