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    • 8. 发明授权
    • High activity polyethylene catalysts
    • 高活性聚乙烯催化剂
    • US6136745A
    • 2000-10-24
    • US120113
    • 1998-07-22
    • David John AshtonYury Viktor KissinRobert Ivan Mink
    • David John AshtonYury Viktor KissinRobert Ivan Mink
    • C08F210/16C08F4/02C08F4/656C08F4/657C08F10/00C08F10/02B01J31/00B01J37/00C08F4/60
    • C08F10/00C08F210/16Y02P20/52
    • The present invention relates to a high activity catalyst composition for the (co-)polymerisation of ethylene, optionally with an alpha olefin of 3 to 10 carbon atoms, comprising a catalyst precursor and an organoaluminium cocatalyst, wherein the catalyst precursor consists of:(i) a silica carrier material, having from 0.3 to 1.2 mmoles of OH groups per gram of silica,(ii) a dialkylmagnesium compound of the formula RMgR.sup.1, where R and R.sup.1 are the same or different C.sub.2 -C.sub.12 alkyl groups, in an amount comprised between 0.5 to 1.5 mmoles of dialkylmagnesium per gram of silica,(iii) a tetraalkyl orthosilicate, in which the alkyl groups contain from 2 to 6 carbon atoms, in an amount comprised between 0.2 to 0.8 mmoles per gram of silica,(iv) a chlorinated compound (X) having the formula R.sub.n SiCl.sub.4-n, wherein each R is the same or different and is hydrogen or an alkyl group and n is an integer from 0 to 3, in an amount comprised between 0.2 to 4 mmoles of X per gram of silica, and(v) a titanium compound in an amount comprised between 0.3 to 1.5 mmoles per gram of silica.
    • 本发明涉及一种用于(共)聚合乙烯(共聚)乙烯,含有3-10个碳原子的α-烯烃的高活性催化剂组合物,其包括催化剂前体和有机铝助催化剂,其中催化剂前体由以下组成:(i )二氧化硅载体材料,每克二氧化硅具有0.3至1.2mmol的OH基团,(ii)式RMgR1的二烷基镁化合物,其中R和R 1是相同或不同的C 2 -C 12烷基,其量包括 每克二氧化硅0.5至1.5毫摩尔二烷基镁,(iii)其中烷基含有2至6个碳原子的原硅酸四烷基酯,其含量为每克二氧化硅0.2至0.8毫摩尔,(iv) 具有式RnSiCl4-n的氯化化合物(X),其中每个R相同或不同,为氢或烷基,n为0-3的整数,其含量为每克0.2至4毫摩尔X 的二氧化硅,和(v)钛酸盐 m化合物,其量为每克二氧化硅0.3至1.5毫摩尔。
    • 10. 发明授权
    • Catalyst for the polymerization of olefins
    • 用于烯烃聚合的催化剂
    • US5348925A
    • 1994-09-20
    • US20990
    • 1993-02-22
    • Federico MilaniLuciano LucianiAntonio Labianco
    • Federico MilaniLuciano LucianiAntonio Labianco
    • C08F4/658C08F4/60C08F4/657C08F10/00C08F110/00B01J31/00
    • C08F10/00
    • A solid component of catalyst, active in the polymerization of propylene and other .alpha.-olefins in stereoregular polymers, is obtained:(i) by treating a non-activated silica support in particles with a tin tetrahalide, to at least partially block the hydroxylic groups of the silica and to obtain a blocked silica;(ii) by impregnating the blocked silica with magnesium dialkyl or magnesium alkyl halide to make the magnesium compound react with the tin compound and with possible residual hydroxylic groups of the silica and to obtain a support;(iii) by halogenating the support by contact with a halogenating agent selected from the halides of tin, antimonium or silicon to obtain a halogenated support;(iv) by titanating the halogenated support with an excess of a titanium tetrahalide to obtain a titanated support;(v) by putting the titanated support in contact with a Lewis base, to obtain a solid component of catalyst.
    • 获得在立体有规聚合物中丙烯和其它α-烯烃聚合中活性的催化剂的固体组分:(i)通过用四卤化锡处理颗粒中的未活化二氧化硅载体至少部分阻断羟基 的二氧化硅,得到封闭的二氧化硅; (ii)通过用二烷基镁或烷基镁镁浸渍封闭的二氧化硅以使镁化合物与锡化合物反应,并与二氧化硅的可能的残余羟基反应并获得载体; (iii)通过与选自锡,锑或硅的卤化物的卤化剂接触来使载体卤化以获得卤化载体; (iv)通过用过量的四卤化钛钛酸化卤化载体以获得钛酸化的载体; (v)通过将钛酸盐载体与路易斯碱接触,得到催化剂的固体成分。