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    • 5. 发明申请
    • Process for increasing ethylene incorporation into random copolymers
    • 增加乙烯掺入无规共聚物的方法
    • US20060247394A1
    • 2006-11-02
    • US11117872
    • 2005-04-29
    • William GauthierJun TianShady HenryNathan Williams
    • William GauthierJun TianShady HenryNathan Williams
    • C08F2/00
    • C08F210/16C08F4/65912C08F4/65916C08F10/00C08F210/06C08F4/65927C08F2500/03C08F2500/20
    • Random copolymers may be prepared using a process that includes polymerizing a mixture of monomers including at least propylene and ethylene monomer, in the presence of a catalyst system including a metallocene catalyst having the general structure: racemic-X(2-R1-4-R2-Ind)2MCl2 wherein M is a Group 4, 5 or 6 transition metal, or a lanthanide or actinide series metal; X is a structural bridge imparting stereorigidity; R1 is hydrogen or an alkyl, aryl or a substitution moiety; R2 is hydrogen, or a C1-C4 alkyl; and Ind is an indenyl group. The copolymers are prepared under reaction conditions suitable to form a copolymer, wherein the copolymer has a higher level of ethylene incorporation than a corresponding polymer formed under otherwise identical reaction conditions except that a different bisindeny metallocene catalyst having a 4-indenyl substitution larger than 4 carbons is used. The copolymers may have a lower melt temperature than the corresponding polymers. The resulting copolymers may be used to prepare articles of manufacture including, but not limited to films, fibers and injection molded articles.
    • 无规共聚物可以使用包括聚合包含至少丙烯和乙烯单体的单体的混合物在内的方法在包括具有以下通式结构的茂金属催化剂的催化剂体系存在下的方法来制备: 线式“end =”lead“?>外消旋-X(2-R 1 - 4-R 2 -Ind)2 MCl 其中M是第4,5或6族过渡金属,或镧系元素或锕系元素系列金属 ; X是赋予立体感的结构桥梁; R1是氢或烷基,芳基或取代部分; R 2是氢或C 1 -C 4烷基; 而Ind是茚基。 共聚物在适于形成共聚物的反应条件下制备,其中共聚物具有比在其他相同反应条件下形成的相应聚合物更高的乙烯掺入水平,不同之处在于使用具有4-茚基取代基大于4个碳原子的不同的双茚基茂金属催化剂 用来。 共聚物可以具有比相应聚合物更低的熔融温度。 所得共聚物可用于制备制品,包括但不限于薄膜,纤维和注模制品。
    • 8. 发明申请
    • POLYAMIDE SUPPORTED METALLOCENE CATALYSTS
    • 聚酰胺支持的金属催化剂
    • US20050049372A1
    • 2005-03-03
    • US10648716
    • 2003-08-26
    • David RauscherWilliam GauthierShady HenryKai Hortmann
    • David RauscherWilliam GauthierShady HenryKai Hortmann
    • C08F4/659C08F4/6592C08F10/00C08F110/06C08F4/44
    • C08F10/00C08F4/65912C08F4/65927C08F110/06Y02P20/52Y10S526/904Y10S526/943C08F4/65916C08F2500/16C08F2500/15C08F2500/12C08F2500/18
    • Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers such as the polymerization of propylene to produce syndiotactic polypropylene or isotactic polypropylene. The supported catalyst comprises a stereospecific metallocene catalyst component and a co-catalyst component comprising an alkylalumoxane. Both the metallocene catalyst component and the co-catalyst component are supported on a particulate polyamide support comprising spheroidical particles of a polyamide having an average diameter with the range of 5-60 microns, and a porosity permitting distribution of a portion of the co-catalyst within the pore volume of the polyamide particles while retaining a substantial portion on the surface of the particles. The polyamide support is characterized by relatively low surface area, specifically a surface area less than 20 square meters per gram. The metallocene component can take the form of a single metallocene two or more co-supported metallocenes.
    • 支持的立体定向催化剂和用于衍生自烯属不饱和单体的聚合物链的立体定向扩散的方法,例如丙烯聚合以产生间同立构聚丙烯或全同立构聚丙烯。 载体催化剂包括立体特异性茂金属催化剂组分和包含烷基铝氧烷的助催化剂组分。 金属茂催化剂组分和助催化剂组分均负载在包含平均直径为5-60微米范围的聚酰胺球形颗粒的颗粒聚酰胺载体上,孔隙率允许一部分助催化剂分配 在聚酰胺颗粒的孔体积内,同时保留颗粒表面上的实质部分。 聚酰胺载体的特征在于相对较低的表面积,特别是小于20平方米/克的表面积。 茂金属组分可以采用单一茂金属两种或多种共支撑金属茂的形式。