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    • 6. 发明申请
    • Supported metallocene catalysts
    • 负载金属茂催化剂
    • US20080287619A1
    • 2008-11-20
    • US11804483
    • 2007-05-18
    • William GauthierDavid RauscherJun TianNathan Williams
    • William GauthierDavid RauscherJun TianNathan Williams
    • B01J31/14C08F4/46
    • C08F210/16B01J31/143B01J31/2295B01J2231/122B01J2531/48C08F4/65912C08F4/65927C08F210/06C08F4/65916C08F2500/15C08F2500/12
    • 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 m 2/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.
    • 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1.3-1.6毫升/克,表面积为200-400平方米/克的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。 特殊的茂金属的特征在于以下公式:<?in-line-formula description =“In-line formula”end =“lead”?> B(CpRaRb)(FlR'2 > n (1)<?in-line-formula description =“In-line Formulas”end =“tail”?>或通过公式:<?in-line-formula description =“在线公式 “end =”lead“?> B'(Cp'R'aR'b)(Fl')M'Q'N'(2)<?in-line-formula description =”In 在式中,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 -C 4烷基; 并且n'是0-4的整数。