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    • 2. 发明授权
    • Catalyst for the (co)polymerization of ethylene and a method for the preparation thereof
    • 乙烯(共)聚合的催化剂及其制备方法
    • US06780809B1
    • 2004-08-24
    • US09601652
    • 2003-05-21
    • Arild FollestadVidar AlmquistUlf PalmqvistHarri Hokkanen
    • Arild FollestadVidar AlmquistUlf PalmqvistHarri Hokkanen
    • B01J3100
    • C08F10/00C08F4/63912C08F4/63916C08F4/63925C08F4/65912C08F4/65925C08F10/02C08F110/02C08F210/16C08F4/63904C08F4/24C08F2500/12C08F2500/17C08F2500/07C08F210/14C08F2500/02
    • A particulate, modified chromium oxide catalyst for the polymerisation of ethylene or ethylene with &agr;-olefins, comprising: a) a chromium-oxide catalyst, b) a transition metal compound, and c) a catalyst activator. A method for the preparation of the catalyst comprises the steps of: a) subjecting a chromium oxide catalyst precursor, which comprises a chromium oxide compound combined with an inorganic support, to a temperature in the range of from 400 to 950° C. under oxidising conditions, and b) impregnating the obtained chromium catalyst with a catalyst activator and with a transition metal compound which comprises at least one cyclopentadienylic ring bonded to said transition metal and at least ligand selected from the group comprising alkoxy, amido and hydrocarbyl radicals, halogen and hybride bonded to said transition metal, which cyclopentadienylic ring may contain hetero atoms, be unsubstituted or substituted, be bonded to said transition metal through a bridge, and optionally annealed to other substituted or unsubstituted ring structures, and if two cyclopentadienyl rings are present they may be bonded to each other through a bridge, and c) subjecting the thus obtained particulate catalyst to drying conditions. This catalyst is suitable for producing polyethylenes under conditions of continuous feeding of all reactants.
    • 一种用于乙烯或乙烯与α-烯烃聚合的颗粒状改性氧化铬催化剂,包括:a)氧化铬催化剂,b)过渡金属化合物,和c)催化剂活化剂。 制备催化剂的方法包括以下步骤:a)将氧化铬催化剂前体(其包含与无机载体结合的氧化铬化合物)在400-950℃的温度下氧化 条件,以及b)用催化剂活化剂和过渡金属化合物浸渍所获得的铬催化剂,所述过渡金属化合物包含至少一个与所述过渡金属键合的环戊二烯基环和至少选自烷氧基,酰胺基和烃基的配体的卤素和 杂环结合到所述过渡金属上,该环戊二烯基环可以含有杂原子,是未取代的或被取代的,通过桥键合到所述过渡金属上,并任选地退火至其它取代或未取代的环结构,如果存在两个环戊二烯基环,则它们可以 通过桥接物彼此结合,并且c)对由此获得的颗粒催化剂进行处理 干燥条件。 该催化剂适用于在连续供给所有反应物的条件下生产聚乙烯。
    • 4. 发明授权
    • Procatalyst and process for the preparation of a multimodal ethylene polymer
    • 用于制备多峰乙烯聚合物的主催化剂和方法
    • US06225420B1
    • 2001-05-01
    • US09093765
    • 1998-06-09
    • Ulf PalmqvistSolveig JohanssonLars ThornPeter IdelmannAnders WahlströmDaniel Lindgren
    • Ulf PalmqvistSolveig JohanssonLars ThornPeter IdelmannAnders WahlströmDaniel Lindgren
    • C08F234
    • C08F297/08C08F10/00C08F210/16Y10S526/901C08F4/6555C08F2/001C08F210/08C08F2500/12C08F2500/07C08F2500/18C08F2500/24
    • A procatalyst and a process for the preparation of a multimodal ethylene homopolymer or copolymer by gas-phase polymerisation is described. The procatalyst used in the process is prepared by: a) contacting the support, preferably silica with a halogenating agent, preferably ethyl aluminium dichloride to obtain a first reaction product, b) contacting the first reaction product with a compound or mixture containing hydrocarbyl and one or more of hydrocarbyloxy, monoalkylamido, dialkylamido, carboxylato and alkoxymethoxy groups linked to magnesium, thereby to obtain a second reaction product (the procatalyst precursor), and c) contacting the second reaction product with a titanium compound, preferably TiCl4. In step a) the molar ratio of the alkyl metal chloride to the surface hydroxyls of the inorganic oxide is preferably between 1:1 and 10:1. In step b) the atomic ratio of the magnesium to the chlorine of the alkyl metal chloride of step a) preferably is between 1:1.5 to 1:2.5. In step c) the atomic ratio of magnesium of step b) to titanium preferably is between 1.4 and 5.
    • 描述了主催化剂和通过气相聚合制备多峰乙烯均聚物或共聚物的方法。 该方法中使用的主催化剂是通过以下步骤制备的:a)将载体,优选二氧化硅与卤化剂,优选二氯化乙基铝接触,得到第一反应产物,b)使第一反应产物与含有烃基和一个 或多个与镁连接的烃氧基,单烷基酰氨基,二烷基酰氨基,羧基和烷氧基甲氧基,从而得到第二反应产物(前催化剂前体),和c)使第二反应产物与钛化合物,优选TiCl 4接触。 在步骤a)中,烷基金属氯化物与无机氧化物的表面羟基的摩尔比优选在1:1至10:1之间。 在步骤b)中,步骤a)的烷基金属氯化物的镁与氯的原子比优选在1:1.5至1:2.5之间。 在步骤c)中,步骤b)的镁与钛的原子比优选为1.4〜5。
    • 6. 发明授权
    • Process for copolymerizing ethene and alpha-olefins
    • 乙烯和α-烯烃共聚方法
    • US6043326A
    • 2000-03-28
    • US716298
    • 1996-11-26
    • Leona SillantakaUlf PalmqvistEero IiskolaSusanna Koivujarvi
    • Leona SillantakaUlf PalmqvistEero IiskolaSusanna Koivujarvi
    • C08F4/658C08F4/44C08F4/655C08F210/00C08F210/02C08F210/16
    • C08F210/16
    • Ethene having a profitable .alpha.-olefin distribution and an .alpha.-olefin copolymer have been prepared with a process comprising reacting of at least the following components with each other:a) a procatalyst comprising a halogen compound of a transition metal in any of groups 4 to 8 of the periodic table of elements,b) a cocatalyst comprising an organohalogenous compound of a metal in group 2 or 3 of the periodic table of elements,c) ethene andd) one or more .alpha.-olefins copolymerizing with ethene, being characterised in that the organohalogenous compound of the metal in group 2 or 3 is prepared by reacting the organic compound of the metal in group 2 or 3 and a catalytically non-toxic halogen compound during copolymerization, or not earlier than 3 hours before copolymerization.
    • PCT No.PCT / FI95 / 00152 Sec。 371日期1996年11月26日 102(e)日期1996年11月26日PCT 1995年3月23日PCT公布。 出版物WO95 / 25758 日期1995年9月28日已经制备了具有有利的α-烯烃分布和α-烯烃共聚物的方法,该方法包括使至少以下组分彼此反应:a)包含过渡金属的卤素化合物的前催化剂 元素周期表第4至8族中的任一个,b)包含元素周期表第2或3族中的金属的有机光致化合物的助催化剂,c)乙烯和d)一种或多种α-烯烃与 乙烯,其特征在于组2或3中的金属的有机光致化合物通过在共聚合期间或不早于3小时内使第2或3族中的金属的有机化合物与催化无毒卤素化合物反应来制备 共聚。
    • 8. 发明授权
    • Process for manufacturing olefin polymers and products prepared by the
process
    • 通过该方法制备烯烃聚合物和产品的方法
    • US5494965A
    • 1996-02-27
    • US217510
    • 1994-03-24
    • Ali HarlinUlf Palmqvist
    • Ali HarlinUlf Palmqvist
    • C08F10/00C08L23/02C08L23/04C08L23/10C08L23/18
    • C08F10/00C08L23/02C08L23/04C08L23/06
    • A process for manufacturing bimodal olefin polymers and copolymers having a ratio between low molecular weight fractions within the range of 40:60-70:30, by mixing under shear conditions 5-50 percent by weight of a low molecular weight unimodal polyolefin having a molecular weight (Mw) between 15,000-30,000, and 95-50 percent by weight of a bimodal polyolefin having a ratio between low molecular weight fractions and high molecular weight fractions within the range of 30:70-55:45. According to a preferred embodiment, there is used a multi-phase process including a loop reactor followed by a gas-phase reactor, wherein a part of the product coming out from the loop reactor is separated and combined with the bimodal product coming out from the gas-phase reactor.
    • 通过在剪切条件下混合5-50重量%的具有分子量的低分子量单峰聚烯烃的制备双峰烯烃聚合物和共聚物的方法,其具有在40:60-70:30的范围内的低分子量分数之间的比例 重量(Mw)为15,000-30,000和95-50重量%的在30:70-55:45范围内的低分子量级分与高分子量级分之间的比例的双峰聚烯烃。 根据优选实施方案,使用多相方法,其包括循环反应器,随后是气相反应器,其中从环管反应器出来的一部分产物被分离并与从该反应器出来的双峰产物组合 气相反应器。