High Melt Strength Polypropylene and Methods of Making Same
    8.
    发明申请
    High Melt Strength Polypropylene and Methods of Making Same 审中-公开
    高熔体强度聚丙烯及其制备方法

    公开(公告)号:US20150307639A1

    公开(公告)日:2015-10-29

    申请号:US14791890

    申请日:2015-07-06

    CPC classification number: C08F10/06 C08J9/00 C08L23/26

    Abstract: A high melt strength polypropylene is formed using maleated polypropylene and a combination of coupling agents and acid neutralizers. The maleated polypropylene can be formed using multi-functional monomers. The high melt strength polypropylene can be useful for foaming, sheet extrusion thermoforming, extrusion blow molding, extrusion coating, fiber, film, and the like.

    Abstract translation: 使用马来酸化聚丙烯和偶联剂和酸中和剂的组合形成高熔体强度的聚丙烯。 马来化聚丙烯可以使用多官能单体形成。 高熔体强度聚丙烯可用于发泡,片材挤出热成型,挤出吹塑,挤出涂布,纤维,薄膜等。

    Supported metallocene catalysts
    9.
    发明授权
    Supported metallocene catalysts 有权
    负载金属茂催化剂

    公开(公告)号:US09127105B2

    公开(公告)日:2015-09-08

    申请号:US14012420

    申请日:2013-08-28

    Abstract: Method employing a supported metallocene catalyst composition in the production of an isotactic ethylene propylene co-polymer. The composition comprises a metallocene component supported on a particulate silica support having average particle size of 10-40 microns, a pore volume of 1.3-1.6 ml/g, a surface area of 200-400 m2/g. An alkylalumoxane cocatalyst component is incorporated on the support. The isospecific metallocene is characterized by the formula: B(CpRaRb)(FlR′2)MQn  (1) or by the formula: B′(Cp′R′aR′b)(Fl′)M′Q′n′  (2) In the formulas Cp and Cp′ are substituted cyclopentadienyl groups, Fl and Fl′ are fluorenyl groups, and B and B′ are structural bridges. R′ are substituents at the 2 and 7 positions, Ra and R′a are substituents distal to the bridge, and Rb and R′b are proximal to the bridge. M and M′ are transition metals, Q′ is a halogen or a C1-C4 alkyl group; and n′ is an integer of from 0-4.

    Abstract translation: 在制备全同立构乙烯丙烯共聚物中使用负载型茂金属催化剂组合物的方法。 组合物包含负载在平均粒度为10-40微米,孔体积为1.3-1.6ml / g,表面积为200-400m2 / g的颗粒状二氧化硅载体上的金属茂组分。 在载体上加入烷基铝氧烷助催化剂组分。 特异性金属茂的特征是:B(CpRaRb)(FlR'2)MQn(1)或式:B'(Cp'R'aR'b)(Fl')M'Q'n'(2 )式中Cp和Cp'是取代的环戊二烯基,Fl和Fl'是芴基,B和B'是结构桥。 R'是2和7位的取代基,Ra和R'a是桥的远端的取代基,Rb和R'b靠近桥。 M和M'是过渡金属,Q'是卤素或C 1 -C 4烷基; 并且n'是0-4的整数。

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