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    • 74. 发明授权
    • Process for the preparation of metallocene catalyst systems on inert
support material using gas phase reactor
    • 使用气相反应器制备惰性载体材料上茂金属催化剂体系的方法
    • US6124229A
    • 2000-09-26
    • US701238
    • 1996-08-22
    • Ralf-Jurgen BeckerRainer Rieger
    • Ralf-Jurgen BeckerRainer Rieger
    • C08F4/602B01J31/22C08F4/02C08F4/42C08F4/619C08F4/6192C08F4/642C08F4/658C08F4/6592C08F10/00B01J31/00B01J37/00C08F4/60
    • B01J31/143B01J31/1616B01J31/2295C08F10/00B01J21/08B01J2531/48C08F4/61912C08F4/61916C08F4/6192Y10S502/523
    • Disclosed is a process for preparing a supported metallocene catalyst by introducing, in a first stage, a gas stream comprising an organoaluminum compound, an inert support material and water, into a first gas phase reactor; allowing the mixture to react under conditions effective to form an aluminoxane supported on said inert support material; metering a second gas stream comprising a metallocene into said gas phase reactor; allowing said mixture to react under conditions effective to form a supported metallocene catalyst; and drying, in a second stage, said supported metallocene catalyst, wherein said drying is carried out in a gas phase reactor. An alternative process comprises introducing, in a first stage, a gas stream comprising an organoaluminum compound, an inert support material, a metallocene and water, into a first gas phase reactor; allowing the mixture to react under conditions effective to form an aluminoxane supported with said metallocene on said inert support material; and drying, in a second stage, said supported metallocene catalyst, wherein said drying is carried out in a gas phase reactor.
    • 公开了一种通过在第一阶段将包含有机铝化合物,惰性载体材料和水的气流引入第一气相反应器中来制备负载型茂金属催化剂的方法; 允许混合物在有效形成负载在所述惰性载体材料上的铝氧烷的条件下反应; 将包含茂金属的第二气流计量到所述气相反应器中; 允许所述混合物在有效形成负载型茂金属催化剂的条件下反应; 并在第二阶段中干燥所述负载的茂金属催化剂,其中所述干燥在气相反应器中进行。 一种替代方法包括在第一阶段将包含有机铝化合物,惰性载体材料,茂金属和水的气流引入第一气相反应器中; 允许混合物在有效形成在所述惰性载体材料上与所述茂金属担载的铝氧烷的条件下反应; 并在第二阶段中干燥所述负载的茂金属催化剂,其中所述干燥在气相反应器中进行。
    • 78. 发明授权
    • Catalyst composition having improved comonomer reactivity
    • 催化剂组合物具有改善的共聚单体反应性
    • US6028151A
    • 2000-02-22
    • US30436
    • 1998-02-25
    • Eric Paul WassermanSun Chueh KaoFrederick John Karol
    • Eric Paul WassermanSun Chueh KaoFrederick John Karol
    • C08F4/44C08F4/602C08F4/619C08F4/6192C08F4/64C08F4/642C08F4/659C08F4/6592C08F10/00C08F210/02C08F210/16
    • C08F10/00C08F210/16C08F4/61912C08F4/61916C08F4/6192Y10S526/901Y10S526/943
    • A process for producing an olefin polymer, which comprises contacting at least two olefin monomers under polymerization conditions with a catalyst composition comprising A) an aluminoxane-impregnated support prepared by contacting an aluminoxane with an inert carrier material and heating to a temperature of at least about 80.degree. C.; B) a metallocene of the formula:(L).sub.y (L')MY.sub.(x-y-1)wherein M is a metal from groups IIIB to VIII of the Periodic Table; each L and L' is independently a cycloalkadienyl group bonded to M; each Y is independently hydrogen, an aryl, alkyl, alkenyl, alkylaryl, or arylalkyl radical having 1-20 carbon atoms, a hydrocarboxy radical having from 1-20 carbon atoms, a halogen, RCO.sub.2 --, or R.sub.2 N--, wherein R is a hydrocarbyl group containing 1 to about 20 carbon atoms; y is 0, 1, or 2; x is 1, 2, 3, or 4; and x-y.gtoreq.1; C) a bulky aluminum alkyl of the formula:AlR.sup.1.sub.x R.sup.2.sub.(3-x)wherein R.sup.1 is a hydrocarbyl group having 1 to 12 carbon atoms; x is an integer from 0 to 2; R.sup.2 is a hydrocarbyl group of the formula --(CH2).sub.y -- R.sup.3, wherein y is an integer from 1 to 8; and R.sup.3 is a saturated or unsaturated hydrocarbyl group having 3 to 12 carbon atoms containing at least one ring, and D) methylaluminoxane is provided. The catalyst composition may be used to prepare olefin polymers having increased short chain branching frequency.
    • 一种制备烯烃聚合物的方法,其包括使聚合条件下的至少两种烯烃单体与催化剂组合物接触,所述催化剂组合物包含:A)通过使铝氧烷与惰性载体材料接触而制备的铝氧烷浸渍的载体,并加热至至少约 80℃。 B)下式的茂金属:(L)y(L')MY(x-y-1)其中M是元素周期表IIIB至VIII族的金属; 每个L和L'独立地是与M键合的环二烯基; 每个Y独立地是氢,具有1-20个碳原子的芳基,烷基,烯基,烷基芳基或芳基烷基,具有1-20个碳原子的烃基,卤素,RCO2-或R2N-,其中R是 含有1至约20个碳原子的烃基; y为0,1或2; x是1,2,3或4; 和x-y> / = 1; C)下式的大体积的烷基铝:AlR 1 R 2(3-x)其中R 1是具有1至12个碳原子的烃基; x是0到2的整数; R 2是式 - (CH 2)y -R 3的烃基,其中y是1至8的整数; R3为含有至少一个环的碳原子数为3〜12的饱和或不饱和烃基,提供D)甲基铝氧烷。 催化剂组合物可用于制备具有增加的短链支化频率的烯烃聚合物。