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1.发明授权PROCESS FOR PRODUCING POLYETHYLENES HAVING A BROAD MOLECULAR WEIGHT DISTRIBUTION, AND A CATALYST SYSTEM USED THEREBY 失效用于生产聚乙烯宽分子量分布及其应用于IT系统的一个催化剂
公开(公告)号：EP0876406B2
公开(公告)日：2010-11-24
申请号：EP97902761.2
申请日：1997-01-23
发明人： FOLLESTAD, Arild , BLOM, Richard , DAHL, Ivar, Martin , JENS, Klaus-Joachim , EGGEN, Svein, Staal
CPC分类号： C08F10/02 , C08F4/63904 , C08F4/63916 , C08F4/6392 , C08F4/63925 , C08F110/02 , Y10S526/905 , Y10S526/943 , C08F4/69 , C08F4/78 , C08F4/24 , C08F2500/03 , C08F2500/12 , C08F2500/07
摘要： A process for the polymerization of ethylene and optionally also α-olefins to ethylene homopolymers or copolymers having a broad molecular weight distribution, comprising polymerization of 100-80 wt.% of ethylene and 0-20 wt.% of comonomer in the presence of two independent, simultaneously present catatlysts A and B. Catalyst A, deposited on an inorganic support, comprises chromium in a predominantly oxidation state of 2. Catalyst B comprises a bis-cyclopentadienyl chromium compound reacted with an inorganic support. The produced polyethylene composition comprises 40-80 % by weight of a first polyethylene and 60-20 % by weight of a second polyethylene. Said first polyethylene is characterized by having a melt index MI21 15. Said second polyethylene is characterized by MI2 > 300 and it contains alkyl branches in a number of up to 20 % of the corresponding number of side branches in said first polyethylene.
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公开(公告)号：EP1313561B1
公开(公告)日：2006-04-05
申请号：EP01963168.8
申请日：2001-08-30
发明人： JENS, Klaus, Joachim , FOLLESTAD, Arild , FREDRIKSEN, Siw, Bodil , BLOM, Richard , DAHL, Ivar, Martin
CPC分类号： C08F10/00 , C08F4/63912 , C08F4/63916 , C08F4/65925 , C08F110/02 , C08F210/16 , C08F4/78 , C08F4/69 , C08F4/22 , C08F4/027 , C08F2500/04 , C08F2500/12 , C08F210/14 , C08F4/63904
摘要： The invention provides a supported chromium catalyst system comprising a chromium catalyst precursor bound via at least one heteroatom to a functionalised support, said heteroatom being connected to said support via an organic group.
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公开(公告)号：EP1385890B1
公开(公告)日：2005-07-20
申请号：EP02722505.1
申请日：2002-05-10
IPC分类号： C08F10/00
CPC分类号： C08F110/02 , C08F4/65904 , C08F4/65912 , C08F4/65916 , C08F4/65925 , C08F4/65927 , C08F110/06 , C08F210/16 , Y10S526/943 , C08F2500/02 , C08F2500/01 , C08F2500/12 , C08F210/14 , C08F2/40
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公开(公告)号：EP1165622A1
公开(公告)日：2002-01-02
申请号：EP00905181.4
申请日：2000-02-22
发明人： FOLLESTAD, Arild , ALMQVIST, Vidar , ANDERSEN, Ketil, Strand , BLOM, Richard , DAHL, Ivar, Martin , ANDERSEN, Arild, Geir
CPC分类号： C08F10/00 , C08F4/63912 , C08F4/63916 , C08F4/63922 , C08F4/65904 , C08F210/16 , Y10S526/919 , C08F4/63904 , C08F2/00 , C08F210/14 , C08F2500/12 , C08F2500/04 , C08F2500/07
摘要： A process for olefin polymerisation in a reaction vessel, said process comprising polymerising at least one α-olefin in a polymerisation stage employing a catalyst feed comprising 1) a first catalyst composition having at least two active catalytic sites capable of producing a first set of polymer components; 2) a second catalyst composition having at least two active catalytic sites capable of giving essentially the same set of polymer components as produced by the catalyst in feed (1) under the same polymerisation conditions but these components in a different ratio to those produced by the catalyst composition of feed (1); wherein the amounts of catalyst compositions (1 and 2) fed into the reaction vessel are independently controlled.
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公开(公告)号：EP1084155B1
公开(公告)日：2005-02-09
申请号：EP99922660.8
申请日：1999-04-07
CPC分类号： C08F10/00 , C08F4/63925 , C08F4/63904 , C08F4/76
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公开(公告)号：EP1165635A1
公开(公告)日：2002-01-02
申请号：EP00902786.3
申请日：2000-02-11
CPC分类号： C08F10/02 , C08F110/02 , C08F210/18 , C08F4/69 , C08F2500/12 , C08F210/14 , C08F10/00 , C08F4/025 , C08F4/022
摘要： A catalyst system for olefin polymerisations comprising (i) a particulate solid support impregnated with a magnesium halogenide and a chromium compound having at least one organic ligand; and (ii) a cocatalyst selected from an alkyl aluminium or alkyl aluminium halogenide or mixtures thereof; wherein the support is not calcined after impregnation of said chromium catalyst; and wherein the molar ratio between the total amount of aluminium and the total amount of chromium is form 1:1 to 50:1.
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7.发明授权PROCESS FOR PRODUCING POLYETHYLENES HAVING A BROAD MOLECULAR WEIGHT DISTRIBUTION, AND A CATALYST SYSTEM USED THEREBY 失效用于生产聚乙烯宽分子量分布及其应用于IT系统的一个催化剂
公开(公告)号：EP0876406B1
公开(公告)日：2002-01-02
申请号：EP97902761.2
申请日：1997-01-23
发明人： FOLLESTAD, Arild , BLOM, Richard , DAHL, Ivar, Martin , JENS, Klaus-Joachim , EGGEN, Svein, Staal
CPC分类号： C08F10/02 , C08F4/63904 , C08F4/63916 , C08F4/6392 , C08F4/63925 , C08F110/02 , Y10S526/905 , Y10S526/943 , C08F4/69 , C08F4/78 , C08F4/24 , C08F2500/03 , C08F2500/12 , C08F2500/07
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公开(公告)号：EP1165622B1
公开(公告)日：2003-04-09
申请号：EP00905181.4
申请日：2000-02-22
发明人： FOLLESTAD, Arild , ALMQVIST, Vidar , ANDERSEN, Ketil, Strand , BLOM, Richard , DAHL, Ivar, Martin , ANDERSEN, Arild, Geir
CPC分类号： C08F10/00 , C08F4/63912 , C08F4/63916 , C08F4/63922 , C08F4/65904 , C08F210/16 , Y10S526/919 , C08F4/63904 , C08F2/00 , C08F210/14 , C08F2500/12 , C08F2500/04 , C08F2500/07
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公开(公告)号：EP1084155A1
公开(公告)日：2001-03-21
申请号：EP99922660.8
申请日：1999-04-07
CPC分类号： C08F10/00 , C08F4/63925 , C08F4/63904 , C08F4/76
摘要： A catalyst system for the polymerisation of ethylene, comprising a particulate inorganic oxide supporting a chromium oxide being in a reduced oxidation state and a metallocene compound having the formula Cp2ZrR'R', wherein each Cp, being equal or different, is an unsubstituted or substituted cyclopentadienyl compound, and R' and R', independent of each other, are selected from the group comprising alkyls having 1 to 6 carbon atoms, unsubstituted or substituted benzyl, and phenoxy substituted with alkyls having 1 to 6 carbon atoms; or R' or R' may be a halide. The catalyst system is prepared by a method comprising the steps of calcining the support, joining onto the surface of the support a chronium-organic compound, subjecting the obtained catalyst precursor to oxidising conditions to obtain the chromium in an oxidised state, reducing the oxidised chromium to obtain a main part thereof in a bivalent oxidation state, and contacting the reduced catalyst with the metallocene compound.
摘要翻译： 用于乙烯聚合的催化剂体系包括负载氧化态为氧化态的氧化铬的颗粒状无机氧化物和具有式Cp2ZrR'R'的茂金属化合物，其中每个Cp相同或不同，是未取代的或取代的 环戊二烯基化合物，且R'和R'彼此独立地选自具有1至6个碳原子的烷基，未取代或取代的苄基和被具有1至6个碳原子的烷基取代的苯氧基; 或者R'或R'可以是卤化物。 该催化剂体系通过包括以下步骤的方法制备：煅烧载体，在载体表面上结合铬 - 有机化合物，使得到的催化剂前体处于氧化条件下，获得氧化态的铬，还原氧化的铬 以获得其二价氧化态的主要部分，并使还原的催化剂与茂金属化合物接触。
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公开(公告)号：EP1385890A2
公开(公告)日：2004-02-04
申请号：EP02722505.1
申请日：2002-05-10
IPC分类号： C08F10/00
CPC分类号： C08F110/02 , C08F4/65904 , C08F4/65912 , C08F4/65916 , C08F4/65925 , C08F4/65927 , C08F110/06 , C08F210/16 , Y10S526/943 , C08F2500/02 , C08F2500/01 , C08F2500/12 , C08F210/14 , C08F2/40
摘要： The invention relates to a process for the preparation of a multimodal Α-olefin polymer comprising polymerising in a polymerisation stage at least one Α-olefin in the presence of a multisite catalyst and an adjuvant so as to produce a polymer having a relatively lower molecular weight component and a relatively higher molecular weight component, said adjuvant being selected from the group consisting of phosphines, phosphites, acetylenes, dienes, thiophenes and aluminium alkyls and said adjuvant being capable of altering the ratio of the fraction of higher molecular weight component to the fraction of the lower molecular weight component by at least 10%.
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