Promoter system for polymerization processes and polymers formed therefrom
    141.
    发明申请
    Promoter system for polymerization processes and polymers formed therefrom 审中-公开
    用于聚合方法的促进剂体系和由其形成的聚合物

    公开(公告)号:US20080051535A1

    公开(公告)日:2008-02-28

    申请号:US11508772

    申请日:2006-08-23

    CPC classification number: C08F10/00 C08F110/02 C08F4/6493 C08F4/6557

    Abstract: Polymerization processes and polymers formed therefrom are described herein. Such processes generally include providing a catalyst system, introducing the catalyst system to a reaction zone, introducing 1-chlorobutane to the reaction zone, introducing an olefin monomer to the reaction zone, contacting the olefin monomer with the catalyst system in the presence of the 1-chlorobutane to form a polyolefin and withdrawing the polyolefin from the reaction zone. The catalyst system is generally formed from a process including contacting a magnesium dialkoxide compound with a first agent to form a first compound, contacting the first compound with a plurality of halogenating/titanating agents to form a reaction product and contacting the reaction product with an activating agent to form the catalyst system.

    Abstract translation: 本文描述了聚合方法和由其形成的聚合物。 这样的方法通常包括提供催化剂体系,将催化剂体系引入反应区,将1-氯丁烷引入反应区,将烯烃单体引入反应区,使烯烃单体与催化剂体系在1 - 氯丁烷以形成聚烯烃并从反应区抽出聚烯烃。 催化剂体系通常由包括使二烷氧基镁化合物与第一试剂接触以形成第一化合物的方法形成,使第一化合物与多种卤化/钛化剂接触以形成反应产物并使反应产物与活化的 试剂形成催化剂体系。

    Heat exchanger and process for devolatilizing polymers using same
    142.
    发明授权
    Heat exchanger and process for devolatilizing polymers using same 失效
    热交换器和使用它们脱挥发分聚合物的方法

    公开(公告)号:US07332058B2

    公开(公告)日:2008-02-19

    申请号:US10632213

    申请日:2003-07-31

    Applicant: Jay Reimers

    Inventor: Jay Reimers

    Abstract: Disclosed is a process for devolatilizing a polymer including passing the polymer through a devolatizer including a plate heat exchanger wherein the plates of the plate heat exchanger are heated by a plurality of heating tubes and wherein the heating tube including a return tube nested inside of a supply tube. The use of the disclosed invention allows for a comparatively small heat profile across heating plates as compared to prior art plate heat exchangers.

    Abstract translation: 公开了一种使聚合物脱挥发分的方法,包括使聚合物通过包括板式热交换器的脱挥器,其中板式换热器的板被多个加热管加热,并且其中加热管包括嵌套在供应源内的回流管 管。 与现有技术的板式换热器相比,使用所公开的发明允许加热板上的相对较小的热分布。

    Preparation and Use of Tetrasubstituted Fluorenyl Catalysts for Polymerization of Olefins
    143.
    发明申请
    Preparation and Use of Tetrasubstituted Fluorenyl Catalysts for Polymerization of Olefins 失效
    用于聚合烯烃的四取代的芴基催化剂的制备和应用

    公开(公告)号:US20080026935A1

    公开(公告)日:2008-01-31

    申请号:US11868033

    申请日:2007-10-05

    Abstract: Catalyst compositions and processes for the polymerization of ethylenically unsaturated monomers to produce polymers, including copolymers or homopolymers. Such monomers include ethylene, C3+ alpha olefins and substituted vinyl compounds, such as styrene and vinyl chloride. The polymerization catalyst characterized by the formula B(FluL)MQn in which Flu is a fluorenyl group substituted at at least the 2,7- and 3,6-positions by hydrocarbyl groups, preferably relatively bulky hydrocarbyl groups. L is a substituted or unsubstituted cyclopentadienyl, indenyl or fluorenyl group or a heteroorgano group, XR, in which X is a heteroatom from Group 15 or 16 of the Periodic Table of Elements, such as nitrogen, R is an alkyl group, a cycloalkyl group or an aryl group and B is a structural bridge extending between the groups L and Flu, which imparts stereorigidity to the ligand structure, M is a Group 4 or Group 5 transition metal, such as titanium, zirconium or hafnium and Q is selected from the group consisting of chlorine, bromine, iodine, an alkyl group, an amino group, an aromatic group and mixtures thereof, with n being 1 or 2.

    Abstract translation: 催化剂组合物和用于聚合烯属不饱和单体以生产聚合物的方法,包括共聚物或均聚物。 这些单体包括乙烯,C 3+α-烯烃和取代的乙烯基化合物,例如苯乙烯和氯乙烯。 其中Flu是在至少2,7-和3,6位被烃基取代的芴基的式B(FluL)MQ N n的特征的聚合催化剂,优选相对庞大的烃基 团体 L是取代或未取代的环戊二烯基,茚基或芴基或杂有机基团XR,其中X是元素周期表第15或16族的杂原子,例如氮,R是烷基,环烷基 或芳基,B是在基团L和Flu之间延伸的结构桥,其赋予配体结构立体刚性,M是第4族或第5族过渡金属,例如钛,锆或铪,Q选自 由氯,溴,碘,烷基,氨基,芳族基团及其混合物组成的组,n为1或2。

    Properties of polyolefin blends and their manufactured articles
    145.
    发明授权
    Properties of polyolefin blends and their manufactured articles 有权
    聚烯烃共混物及其制品的性能

    公开(公告)号:US07309739B2

    公开(公告)日:2007-12-18

    申请号:US11264904

    申请日:2005-11-02

    Abstract: A polymer blend and a method of making the same are provided. The polymer blend includes an ethylene-propylene (C2-C3) random copolymer and a modifier selected from the group consisting of a metallocene-catalyzed polyethylene-based copolymer, a metallocene-catalyzed polyethylene-based terpolymer, and a syndiotactic polypropylene homopolymer. The polymer blend may also include an organic peroxide for visbreaking the polymer blend. An end use article is made from the foregoing polymer blend. The end use article may be, for example, a film, an injection molded article, a compression molded article, a thermoformed article, and a fiber. The end use article is desirably a film having an Elmendorf tear strength of at least about 300 g/ply in the machine and transverse directions.

    Abstract translation: 提供聚合物共混物及其制备方法。 聚合物共混物包括乙烯 - 丙烯(C 2 -C 3 -C 3)无规共聚物和选自茂金属催化的聚乙烯基共聚物, 金属茂催化的聚乙烯基三元共聚物和间同立构聚丙烯均聚物。 聚合物共混物还可以包括用于减粘裂化聚合物共混物的有机过氧化物。 从上述聚合物共混物制成最终用途制品。 最终用途物品可以是例如膜,注射成型制品,压塑制品,热成型制品和纤维。 最终用途制品理想地是在机器和横向上具有至少约300g /层的埃尔曼多夫撕裂强度的膜。

    Heating hydrocarbon process flow using flameless oxidation burners
    146.
    发明授权
    Heating hydrocarbon process flow using flameless oxidation burners 有权
    使用无焰氧化燃烧器加热烃工艺流程

    公开(公告)号:US07293983B2

    公开(公告)日:2007-11-13

    申请号:US11069354

    申请日:2005-03-01

    Inventor: James R. Butler

    CPC classification number: F23C3/002 F23C2900/99001 Y02E20/342

    Abstract: Hydrocarbon streams are heated uniformly and directly using one or more flameless oxidation burners. Flameless oxidation burners may control the temperature within a range of about 50° C. to reduce the tendency to coking due to localized “hot spots”. The hydrocarbon streams, which may be monomer streams, may pass cross-current (perpendicular) to burners having a longitudinal design or configuration, or may pass parallel to such burners.

    Abstract translation: 使用一个或多个无焰氧化燃烧器均匀且直接地加热碳氢化合物流。 无焰氧化燃烧器可以将温度控制在约50℃的范围内,以减少由于局部“热点”引起的焦化倾向。 可以是单体流的烃流可以将横流(垂直)通过具有纵向设计或构造的燃烧器,或者可以平行于这种燃烧器通过。

    Impact modified polystyrene and process for preparing same
    149.
    发明申请
    Impact modified polystyrene and process for preparing same 审中-公开
    抗冲改性聚苯乙烯及其制备方法

    公开(公告)号:US20070225440A1

    公开(公告)日:2007-09-27

    申请号:US11728447

    申请日:2007-03-24

    Abstract: Disclosed is a composition comprising an impact modified polystyrene prepared using a process comprising dissolving a styrene-butadiene-styrene block copolymer in styrene monomer and polymerizing the styrene monomer wherein the impact modified polystyrene has a haze value of less than or equal to 12 percent. Also disclosed is an impact modified polystyrene prepared using the same process and having a ratio of Mz/Mn of at least 4.1.

    Abstract translation: 公开了包含使用包括将苯乙烯 - 丁二烯 - 苯乙烯嵌段共聚物溶解在苯乙烯单体中并使苯乙烯单体聚合的方法制备的抗冲改性聚苯乙烯的组合物,其中抗冲改性聚苯乙烯的雾度值小于或等于12%。 还公开了使用相同方法制备的具有至少4.1的Mz / Mn比的冲击改性聚苯乙烯。

    Articles having improved clarity, prepared from propylene-ethylene copolymers
    150.
    发明申请
    Articles having improved clarity, prepared from propylene-ethylene copolymers 审中-公开
    具有改进透明度的制品,由丙烯 - 乙烯共聚物制备

    公开(公告)号:US20070202285A1

    公开(公告)日:2007-08-30

    申请号:US11012499

    申请日:2004-12-15

    Abstract: Molded articles are prepared from propylene-ethylene copolymers and exhibiting improved clarity and strength properties. Articles prepared include bottles and other thin-walled articles. The articles are prepared using an isotactic propylene-ethylene random copolymer resin having an ethylene content of from about 0.5 to about 3 percent by total weight of copolymer, with a xylene solubles content of less than about 1.5 percent. The injection molded article may exhibit less than about 20 percent haze, as determined by ASTM D1003, at a thickness of about 0.08 inch (2.03 mm). Articles may also be prepared from similar copolymers having an ethylene content greater than about 3 percent by total weight of copolymer, with a xylene solubles content of less than about 4 percent by total weight of copolymer. These articles may exhibit less than about 13 percent haze, as determined by ASTM D1003, at a thickness of about 0.08 inch (2.03 mm).

    Abstract translation: 模制品由丙烯 - 乙烯共聚物制备,并具有改进的透明度和强度性能。 制作的文章包括瓶子和其他薄壁物品。 制品使用全同立构丙烯 - 乙烯无规共聚物树脂制备,其乙烯含量为共聚物总重量的约0.5%至约3%,二甲苯可溶物含量小于约1.5%。 注射成型制品可以表现出小于约20%的雾度,如ASTM D1003所测定,厚度约为0.08英寸(2.03mm)。 制品也可以由共聚物的总重量大于约3重量%的相似共聚物制备,二甲苯可溶物含量小于共聚物总重量的约4重量%。 根据ASTM D1003测定,这些制品的厚度可以低于约13%,厚度约为0.08英寸(2.03mm)。

Patent Agency Ranking