Method for producing supported chrome catalysts and the use thereof for the polymerization of olefins
    1.
    发明授权
    Method for producing supported chrome catalysts and the use thereof for the polymerization of olefins 有权
    负载型铬催化剂的制备方法及其在烯烃聚合中的应用

    公开(公告)号:US06608151B1

    公开(公告)日:2003-08-19

    申请号:US10070341

    申请日:2002-02-28

    IPC分类号: C08F424

    摘要: The invention relates to a method for producing supported chromium catalysts for the polymerisation of olefins by loading a xerogel support with chromium by adding to the xerogel support a volume of a 0.025 to 15% by weight solution of a chromium compound or a volume of a solution comprising from 0.025 to 7.8% by weight of Cr which is essentially converted into a chromium(VI) compound on heating in a water-free stream of gas under oxidizing conditions at temperatures in the range from 300 to 1100° C. for a period of from 10 to 1000 minutes in a solvent which comprises a maximum of 20% by weight of water, and subsequently evaporating the solvent, where the volume of the chromium salt solution employed is smaller than the pore volume of the xerogel support.

    摘要翻译: 本发明涉及通过向干凝胶载体中加入0.025至15重量%的铬化合物或一定体积的溶液的体积来生产用于使烯烃聚合的负载型铬催化剂的方法, 包括0.025至7.8重量%的Cr,其在氧化条件下在300至1100℃的温度范围内在无水气体流中加热,基本上转化为铬(VI)化合物一段时间 在包含最多20重量%的水的溶剂中10至1000分钟,然后蒸发溶剂,其中所用的铬盐溶液的体积小于干凝胶载体的孔体积。

    Optimized method for the production of catalyst supports based on silica gel and chromium catalysts supported on silica gel
    2.
    发明授权
    Optimized method for the production of catalyst supports based on silica gel and chromium catalysts supported on silica gel 有权
    基于硅胶和载于硅胶上的铬催化剂生产催化剂载体的优化方法

    公开(公告)号:US06645900B2

    公开(公告)日:2003-11-11

    申请号:US10087012

    申请日:2002-02-28

    IPC分类号: B01J29035

    摘要: The invention relates to a catalyst support and to a method for the production of the catalyst support comprising the following steps: a) production of a silicic acid hydrogel having a solids content of from 10 to 25% by weight (calculated as SiO2) whose particles are substantially spherical, b) extraction of the hydrogel particles with an alcohol until at least 60% of the water present in the hydrogel has been removed, c) drying of the resultant hydrogel until the residual alcohol content is less than 10% by weight (xerogel formation) at temperatures of ≧160° C. at atmospheric pressure using an inert entraining gas, d) setting of the desired particle size of the resultant xerogel, in which the hydrogel particles have a particle size of ≧8 mm before the extraction, and to a catalyst and to a method for the production of the catalyst by loading the catalyst support with a chromium compound. The invention also relates to a method for the production of polyolefins using the catalyst.

    摘要翻译: 本发明涉及一种催化剂载体和用于生产催化剂载体的方法,包括以下步骤:a)制备固体含量为10至25重量%(以SiO 2计)的硅酸水凝胶,其颗粒 基本上是球形的,b)用醇萃取水凝胶颗粒,直到水凝胶中存在的至少60%的水已被除去,c)干燥所得的水凝胶,直到残余的醇含量低于10重量% 干燥剂形成),在大气压下使用惰性夹带气体,在大气压力= 160℃的温度下,d)设定所得干燥剂的所需粒度,其中水凝胶颗粒的颗粒尺寸> 萃取和催化剂的制备方法,以及通过用铬化合物负载催化剂载体来生产催化剂的方法。 本发明还涉及使用该催化剂生产聚烯烃的方法。

    Method for the discontinuous thermal treatment of catalyst material
    4.
    发明授权
    Method for the discontinuous thermal treatment of catalyst material 失效
    催化剂材料不连续热处理方法

    公开(公告)号:US06683022B1

    公开(公告)日:2004-01-27

    申请号:US09536355

    申请日:2000-03-27

    IPC分类号: B01J2326

    CPC分类号: C08F10/00 C08F4/24

    摘要: Method for the discontinuous thermal treatment of catalyst material comprising the steps (a) introducing the catalyst material into a reactor, (b) heating the catalyst material, (c) thermally treating the catalyst material in the reactor at the reactor temperature, (d) discharging the catalyst material from the reactor and (e) cooling the catalyst material, wherein the reactor temperature is kept constant during the steps (a) to (e), step (b) is carried out during and/or after step (a), step (e) is carried out during and/or after step (d), and step (c) is carried out after step (b) and before step (e). The method is used primarily for the calcination or activation of catalysts or catalyst supports which are used in polyolefin production.

    摘要翻译: 催化剂材料的不连续热处理方法,包括步骤(a)将催化剂材料引入反应器,(b)加热催化剂材料,(c)在反应器温度下热处理反应器中的催化剂材料,(d) 从反应器中排出催化剂材料,(e)冷却催化剂材料,其中步骤(a)至(e)中步骤(b)中步骤(a)至(e)期间反应器温度保持恒定在步骤(a)期间和/ 步骤(e)在步骤(d)期间和/或之后进行,步骤(c)在步骤(b)之后和步骤(e)之前进行。该方法主要用于催化剂的煅烧或活化 或用于聚烯烃生产的催化剂载体。

    Polymerization catalyst used for producing polyolefins that have excellent combined properties
    5.
    再颁专利
    Polymerization catalyst used for producing polyolefins that have excellent combined properties 有权
    用于生产具有优异组合性能的聚烯烃的聚合催化剂

    公开(公告)号:USRE40140E1

    公开(公告)日:2008-03-04

    申请号:US11541519

    申请日:2001-05-14

    CPC分类号: C08F10/02 C08F4/24

    摘要: The invention relates to a process for preparing a catalyst for the polymerization of olefins, which comprises: a) preparation of a finely divided silica xerogel, b) loading of the xerogel with chromium from a solution of chromium trioxide or a chromium compound which is converted into chromium trioxide under the conditions of step c), and c) activation of the resulting product at from 400 to 1100° C. in a water-free gas stream comprising oxygen in a concentration of above 10% by volume, wherein a fluoride doping with a fluorinating agent is carried out in step b) or in step c). Furthermore, the invention relates to a catalyst for the polymerization of olefins which is obtainable by the process of the invention and to a process for the polymerization of olefins in which an olefin or an olefin mixture is polymerized in the presence of a catalyst according to the invention.

    摘要翻译: 本发明涉及一种制备烯烃聚合催化剂的方法,该方法包括:a)制备细碎的二氧化硅干凝胶,b)用铬从三氧化铬溶液或铬化合物的溶液中加载干凝胶, 在步骤c)的条件下转化为三氧化铬,和c)在含有浓度高于10体积%的氧的无水气流中,在400至1100℃下活化所得产物,其中氟化物掺杂 在步骤b)或步骤c)中进行氟化剂。 此外,本发明涉及可通过本发明的方法获得的烯烃聚合催化剂和烯烃聚合方法,其中烯烃或烯烃混合物在催化剂存在下聚合,根据 发明。

    Process for preparing a chromium-based catalyst for the polymerization and/or copolymerization of olefins
    7.
    发明授权
    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:US07705097B2

    公开(公告)日:2010-04-27

    申请号:US11628827

    申请日:2005-06-09

    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。

    Polymerization catalyst used for producing polyolefins that have excellent combined properties
    8.
    发明授权
    Polymerization catalyst used for producing polyolefins that have excellent combined properties 有权
    用于生产具有优异组合性能的聚烯烃的聚合催化剂

    公开(公告)号:US06897181B2

    公开(公告)日:2005-05-24

    申请号:US10276618

    申请日:2001-05-14

    CPC分类号: C08F10/02 C08F4/24

    摘要: The invention relates to a process for preparing a catalyst for the polymerization of olefins, which comprises: a) preparation of a finely divided silica xerogel, b) loading of the xerogel with chromium from a solution of chromium trioxide or a chromium compound which is converted into chromium trioxide under the conditions of step c), and c) activation of the resulting product at from 400 to 1100° C. in a water-free gas stream comprising oxygen in a concentration of above 10% by volume, wherein a fluoride doping with a fluorinating agent is carried out in step b) or in step c). Furthermore, the invention relates to a catalyst for the polymerization of olefins which is obtainable by the process of the invention and to a process for the polymerization of olefins in which an olefin or an olefin mixture is polymerized in the presence of a catalyst according to the invention.

    摘要翻译: 本发明涉及一种制备烯烃聚合催化剂的方法,该方法包括:a)制备细碎的二氧化硅干凝胶,b)用铬从三氧化铬溶液或铬化合物的溶液中加载干凝胶, 在步骤c)的条件下转化为三氧化铬,和c)在含有浓度高于10体积%的氧的无水气流中,在400至1100℃下活化所得产物,其中氟化物掺杂 在步骤b)或步骤c)中进行氟化剂。 此外,本发明涉及可通过本发明的方法获得的烯烃聚合催化剂和烯烃聚合方法,其中烯烃或烯烃混合物在催化剂存在下聚合,根据 发明。

    Process for preparing polyolefins in suspension
    9.
    发明授权
    Process for preparing polyolefins in suspension 有权
    悬浮液中制备聚烯烃的方法

    公开(公告)号:US08148588B2

    公开(公告)日:2012-04-03

    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设定不同反应条件的反应器R1,R2.x,R3.y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的反应器的废气A1,A2.x,A3.y,A4和A5,然后将收集的废气在压缩级10中压缩,然后将压缩的废气冷却, 冷却的材料被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。