Ziegler-Natta catalyst systems modified during their preparation
    1.
    发明授权
    Ziegler-Natta catalyst systems modified during their preparation 失效
    齐格勒 - 纳塔催化剂体系在制备过程中改进

    公开(公告)号:US6156691A

    公开(公告)日:2000-12-05

    申请号:US928394

    申请日:1997-09-12

    CPC分类号: C08F10/00

    摘要: In catalyst systems of the Ziegler-Natta type modified during their preparation and comprising as active constituentsa) a titanium-containing solid component which is obtained by reacting a compound of titanium with a compound of magnesium, a halogen, an inorganic oxide as support, a C.sub.1 -C.sub.8 -alkanol and a carboxylic ester as electron donor compound,and also as cocatalystb) an aluminum compound andc) if desired, a further electron donor compound,the titanium-containing solid component a) is prepared by first, in a first stage, admixing an inorganic oxide as support with a solution of a chlorine-free compound of magnesium in an inert solvent, stirring this mixture for from 0.5 to 5 hours at from 10 to 120.degree. C. and subsequently reacting it while stirring continually in an inert solvent with a C.sub.1 -C.sub.8 -alkanol in an at least 1.3-fold excess, based on the compound of magnesium, to give a chlorine-free intermediate, then, without purification or extraction of the intermediate, adding a compound of trivalent or tetravalent titanium and a carboxylic ester as electron donor compound to this intermediate, stirring the resulting mixture for at least 30 minutes at from 20 to 130.degree. C., subsequently filtering off and washing the solid thus obtained and subsequently, in a second stage, extracting the solid obtained from the first stage in an inert solvent comprising at least 5% by weight of titanium tetrachloride and washing it with a liquid alkane.

    摘要翻译: 在其制备过程中改性的齐格勒 - 纳塔型催化剂体系中,包含作为活性成分的含钛固体成分a)通过使钛化合物与镁,卤素,无机氧化物作为载体反应而得到的含钛固体成分, 作为电子给体化合物的C1-C8-链烷醇和羧酸酯,以及作为助催化剂的b)铝化合物,和c)如果需要,另外的电子给体化合物,含钛固体组分a)首先在 第一阶段,将无机氧化物作为载体与无氯化合物的镁在惰性溶剂中的溶液混合,在10至120℃下搅拌该混合物0.5至5小时,随后在持续搅拌下反应 在基于镁化合物的至少1.3倍过量的C 1 -C 8烷醇的惰性溶剂中,得到无氯中间体,然后不经纯化或萃取中间体,加入一种 磅三价或四价钛和羧酸酯作为电子给体化合物,在20至130℃下搅拌所得混合物至少30分钟,随后过滤并洗涤由此获得的固体,随后在 第二阶段,在包含至少5重量%的四氯化钛的惰性溶剂中萃取从第一阶段获得的固体,并用液体烷烃洗涤。

    Ziegler-Natta catalyst systems modified during their preparation
    2.
    发明授权
    Ziegler-Natta catalyst systems modified during their preparation 失效
    齐格勒 - 纳塔催化剂体系在制备过程中改进

    公开(公告)号:US6107231A

    公开(公告)日:2000-08-22

    申请号:US928526

    申请日:1997-09-12

    CPC分类号: C08F10/00 C08F110/06

    摘要: In catalyst systems of the Ziegler-Natta type comprising as active constituentsa) a titanium-containing solid component which is obtained by reacting a compound of titanium with a compound of magnesium, a halogen, an inorganic oxide as support, a C.sub.1 -C.sub.8 -alkanol and a carboxylic ester as electron donor compound,and also as cocatalyst,b) an aluminum compound andc) if desired, a further electron donor compound,the reaction of the individual components for preparing the titanium-containing solid component a) is carried out in the presence of an aromatic hydrocarbon as solvent.

    摘要翻译: 在包含作为活性成分的齐格勒 - 纳塔型催化剂体系中,a)通过使钛化合物与镁,卤素,作为载体的无机氧化物,C1-C8- 链烷醇和羧酸酯作为电子给体化合物,以及作为助催化剂,b)铝化合物和c)如果需要,还可以进一步施加电子给体化合物,用于制备含钛固体组分a)的各组分的反应 在芳族烃作为溶剂的存在下。

    Preparation of Ziegler-Natta type catalyst systems
    3.
    发明授权
    Preparation of Ziegler-Natta type catalyst systems 失效
    齐格勒 - 纳塔型催化剂体系的制备

    公开(公告)号:US5658840A

    公开(公告)日:1997-08-19

    申请号:US457280

    申请日:1995-06-05

    CPC分类号: C08F10/00

    摘要: A process for the preparation of Ziegler-Natta type catalyst systems, containing, as active constituentsa) a titanium-containing solid component, which contains in addition to a compound of titanium at least one electron donor compound, and is present in an inert solvent in the form of a suspension, and, as co-catalyst,b) an aluminum compound andc) optionally further electron donor compoundsin which, following the preparation of the titanium-containing solid component a), the inert solvent present in the suspension is removed by first filtering the suspension in a first step, and then removing further solvent from the filtered material in a second step by applying a pressure difference at temperatures of not more than 100.degree. C.

    摘要翻译: 一种制备齐格勒 - 纳塔型催化剂体系的方法,其含有作为活性组分的a)含钛固体组分,其除了含有至少一种电子给体化合物的钛化合物外,还存在于惰性溶剂中 作为助催化剂,b)铝化合物和c)任选的其它电子给体化合物,其中在制备含钛固体组分a)之后,存在于悬浮液中的惰性溶剂 通过在第一步骤中首先过滤悬浮液,然后在第二步骤中通过在不超过100℃的温度下施加压差而从过滤的材料中除去另外的溶剂来​​除去。

    Catalyst systems of the type comprising the Ziegler-Natta catalysts
    4.
    发明授权
    Catalyst systems of the type comprising the Ziegler-Natta catalysts 失效
    包含齐格勒 - 纳塔催化剂的催化剂体系

    公开(公告)号:US6051523A

    公开(公告)日:2000-04-18

    申请号:US879781

    申请日:1997-06-20

    CPC分类号: C08F10/00

    摘要: Catalyst systems of the type comprising the Ziegler-Natta catalysts contain, as active components,a) a titanium-containing solid component which contains titanium, magnesium, halogen and a carboxylic ester as an electron donor, and, as a cocatalyst,b) an aluminum compound andc) if required, a further electron donor, a compound of the following formula IR.sub.m.sbsb.1 Al--(OCOR.sup.1).sub.m.sbsb.2 (I)whereR and R.sup.1 are identical or different and are each hydrogen or C.sub.1 -C.sub.8 -alkyl andm.sub.1 and m.sub.2 are each 1 or 2 and sum to give 3, being used as aluminum compound b) in the preactivation of the titanium-containing soild compound a) with the cocatalyst.

    摘要翻译: 包含齐格勒 - 纳塔催化剂的催化剂体系包含作为活性组分的a)含钛,镁,卤素和羧酸酯作为电子给体的含钛固体组分,作为助催化剂,b) 铝化合物和c)如果需要,另外的电子给体,下式IRm1Al-(OCOR1)m2(I)的化合物,其中R和R 1相同或不同,各自为氢或C 1 -C 8 - 烷基,m 1和m 2 分别为1或2,并且与助催化剂在含钛化合物a)的预活化中相加得到3,用作铝化合物b)。

    Loop Reactor With Varying Diameter For Olefin Polymerization
    6.
    发明申请
    Loop Reactor With Varying Diameter For Olefin Polymerization 有权
    环烯烃反应器用于烯烃聚合的不同直径

    公开(公告)号:US20080119624A1

    公开(公告)日:2008-05-22

    申请号:US10572817

    申请日:2004-09-16

    IPC分类号: C08F2/00

    摘要: Process for polymerizing at least one olefinic monomer selected from ethylene, propylene and 1-butene in a loop reactor in the presence of a polymerization catalyst at from 20 to 150° C., but below the melting point of a polymer to be formed, and a pressure of from 43 to 80 bar, where the polymer formed is present in a suspension in a liquid or supercritical suspension medium and wherein the suspension is circulated by means of an axial pump, wherein the polymerization is carried out at an average solids concentration in the reactor of more than 53% by weight, in the case of continuous product discharge, and at an average solids concentration in the reactor of more than 45% by weight, in the case of discontinuous product discharge, and wherein the polymerization is carried out at an ethylene concentration of at least 10 mol %, based on the suspension medium.

    摘要翻译: 在聚合催化剂存在下,在环状反应器中,在20〜150℃,但低于待形成的聚合物的熔点,聚合至少一种选自乙烯,丙烯和1-丁烯的烯烃单体的方法,以及 其中形成的聚合物存在于液体或超临界悬浮介质中的悬浮液中,并且其中悬浮液通过轴向泵循环,其中聚合以平均固体浓度进行 反应器在连续产物排出的情况下大于53重量%,反应器中的平均固体浓度大于45重量%,在不连续的产物排出的情况下,并且其中进行聚合 基于悬浮介质,乙烯浓度至少为10摩尔%。

    Process for Preparing Polyolefins in Suspension
    7.
    发明申请
    Process for Preparing Polyolefins in Suspension 有权
    悬浮液中聚烯烃的制备方法

    公开(公告)号:US20070276170A1

    公开(公告)日:2007-11-29

    申请号:US10589048

    申请日:2005-01-25

    IPC分类号: C08F10/00 C08L23/08 C08L23/14

    摘要: The invention relates to a continuous process for preparing polyolefins having a bimodal or multimodal molar mass distribution in suspension in at least two reactors R1, R2.x, R3.y which are connected in series and in which different reaction conditions are set. In this process, the offgases A1, A2.x, A3.y, A4 and A5 leaving all the reactors connected in series are firstly collected, the collected offgases are then compressed in a compression stage 10, the compressed offgases are subsequently cooled and the cooled material is separated into a gaseous fraction and a liquid fraction. The separated fractions are then recirculated to the polymerization process at different points. The process of the invention allows the total conversion of the polymerization, based on monomer and comonomer used, to be increased to a surprising extent.

    摘要翻译: 本发明涉及一种用于制备在至少两个串联连接并且其中设定不同反应条件的至少两个反应器R 1,R 2,X,R 3中的悬浮液中具有双峰或多峰摩尔质量分布的聚烯烃的连续方法 。 在该过程中,首先收集离开所有串联连接的反应器的废气A 1,A 2,X,A 3,A,A 4和A 5,然后将收集的废气在压缩级10中压缩,压缩的废气 随后冷却并将冷却的材料分离成气体馏分和液体馏分。 然后将分离的级分在不同的点再循环到聚合过程中。 本发明的方法允许基于使用的单体和共聚单体的聚合的总转化率增加到惊人的程度。

    Process for Preparing a Chromium-Based Catalyst for the Polymerization and/or Copolymerization of Olefins
    9.
    发明申请
    Process for Preparing a Chromium-Based Catalyst for the Polymerization and/or Copolymerization of Olefins 有权
    制备用于烯烃聚合和/或共聚的铬基催化剂的方法

    公开(公告)号:US20080051532A1

    公开(公告)日:2008-02-28

    申请号:US11628827

    申请日:2005-06-09

    IPC分类号: C08F4/18 C08F2/00

    摘要: Process for preparing a supported catalyst for the polymerization and/or copolymerization of olefins which has a chromium content of from 0.01 to 5% by weight, based on the element, which comprises (a) preparing a homogeneous solution comprising an organic or inorganic chromium compound and at least one further organic or inorganic compound of elements selected from among Mg, Ca, Sr, B, Al, Si, P, Bi, Sc, V, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Ru, Rh, Pd, Hf, Ta, W in a protic or aprotic polar solvent, (b) bringing the solution from a) into contact with a finely divided inorganic support to form a catalyst precursor, (c) if appropriate, removing the solvent from the catalyst precursor and (d) calcining the catalyst precursor at temperatures of from 350 to 950° C., preferably 400 to 900° C., under oxidative conditions.

    摘要翻译: 制备用于烯烃聚合和/或共聚的负载催化剂的方法,该催化剂的铬含量为0.01至5重量%,基于该元素,其包括(a)制备包含有机或无机铬化合物的均匀溶液 以及选自Mg,Ca,Sr,B,Al,Si,P,Bi,Sc,V,Mn,Fe,Co,Ni,Cu,Zn,Zr,Nb中的至少一种有机或无机化合物, Mo,Ru,Rh,Pd,Hf,Ta,W在质子或非质子极性溶剂中,(b)使来自a)的溶液与细碎的无机载体接触以形成催化剂前体,(c) 从催化剂前体中除去溶剂,和(d)在氧化条件下,在350-950℃,优选400-900℃的温度下煅烧催化剂前体。

    Catalyst systems of the ziegler-natta type and a method for production thereof
    10.
    发明申请
    Catalyst systems of the ziegler-natta type and a method for production thereof 审中-公开
    齐格勒 - 纳塔型催化剂体系及其生产方法

    公开(公告)号:US20050075241A1

    公开(公告)日:2005-04-07

    申请号:US10399232

    申请日:2001-10-18

    CPC分类号: C08F10/00 C08F4/6555

    摘要: A method for production of catalytic systems of the Ziegler-Natta type is characterised in comprising the following steps: A) bringing an inorganic metal oxide and a magnesium compound of formula MgRnX2-n into contact, where X=independently, fluorine, chlorine, bromine, iodine, hydrogen, NR2, OR, SR, SO3R or OC(O)R and R=independently, C1-C20 linear, branched, or cyclic alkyl, a C2-C10 alkenyl, an alkylaryl with 1-10 C atoms in the alkyl group and 6-20 C atoms in the aryl group, or a C6-C18 aryl and n=1 or 2, then, B) bringing the intermediate product obtained in step A) into contact with a halogenating reagent, C) bringing the intermediate product obtained in step B) into contact with a) a tetravalent titanium compound, b) a metallo-organic compound of group 3 of the periodic system and c) optionally, an electron-donor compound and D) washing the product obtained in step C) with an aprotic solvent. The invention further relates to a catalytic system obtained as above and a method for the polymerisation of olefins.

    摘要翻译: 一种齐格勒 - 纳塔型催化体系的制备方法,其特征在于包括以下步骤:A)使式MgRnX2-n的无机金属氧化物和镁化合物接触,其中X独立地为氟,氯,溴 ,碘,氢,NR 2,OR,SR,SO 3 R或OC(O)R和R独立地为C 1 -C 20直链,支链或环状烷基,C 2 -C 10烯基,具有1-10个C原子的烷基芳基 烷基和芳基中的6-20个C原子,或C 6 -C 18芳基,n = 1或2,然后B)将步骤A)中得到的中间产物与卤化试剂接触,C) 步骤B)中获得的中间产物与a)四价钛化合物接触,b)周期性体系的第3族金属有机化合物,和c)任选的电子给体化合物,和D)洗涤步骤 C)与非质子溶剂。 本发明还涉及如上所述获得的催化体系和烯烃聚合方法。