Slurry phase polymerisation process
    32.
    发明授权
    Slurry phase polymerisation process 有权
    浆相聚合工艺

    公开(公告)号:US08202950B2

    公开(公告)日:2012-06-19

    申请号:US12733379

    申请日:2008-08-29

    摘要: Process for producing a multimodal polyethylene in at least two loop reactors connected in series. In the process 20-80 wt % of a high molecular weight (HMW) polymer is made in suspension in a first reactor and 20-80 wt % of a low molecular weight (LMW) polymer is made in suspension in a second reactor, one polymer being made in the presence of the other in either order. The ratio of the average activity in the LMW reactor to the average activity in the HMW reactor is from 0.25 and 1.5, where average activity in each reactor is defined as the rate of polyethylene produced in the reactor (kgPE/hr)/[ethylene concentration in the reactor (mol %)×residence time in the reactor (hours)×feed rate of catalyst into the reactor (g/hr)], residence time being defined as the mass of the polymer in the reactor (kg)/the output rate of polymer from the reactor (kg/hr), and the volumes of the two reactors differ by less than 10%.

    摘要翻译: 在至少两个串联连接的回路反应器中生产多峰聚乙烯的方法。 在该方法中,将20-80重量%的高分子量(HMW)聚合物悬浮在第一反应器中,并将20-80重量%的低分子量(LMW)聚合物悬浮在第二反应器中,一个 聚合物是在其它任何一种的存在下制成的。 LMW反应器中的平均活性与平均活性的比例为0.25和1.5,其中每个反应器中的平均活性定义为在反应器中产生的聚乙烯的速率(kgPE / hr)/ [乙烯浓度 在反应器中(mol%)×在反应器中的停留时间(小时)×催化剂进入反应器的进料速率(g / hr)],停留时间定义为反应器中聚合物的质量(kg)/输出 来自反应器的聚合物的速率(kg / hr),两个反应器的体积相差小于10%。

    Slurry phase polymerisation process
    33.
    发明授权
    Slurry phase polymerisation process 有权
    浆相聚合工艺

    公开(公告)号:US08183332B2

    公开(公告)日:2012-05-22

    申请号:US12733358

    申请日:2008-08-29

    摘要: Process for producing a multimodal polyethylene in at least two reactors connected in series, in which 20-80 wt % of a high molecular weight (HMW) polymer is made in suspension in a first reactor and 20-80 wt % of a low molecular weight (LMW) polymer is made in suspension in a second reactor. The ratio of the average activity in the LMW reactor to the average activity in the HMW reactor is from 0.25 and 1.5, where average activity in each reactor is defined as the rate of polyethylene produced in the reactor (kgPE/hr)/[ethylene concentration in the reactor (mol %)×residence time in the reactor (hours)×feed rate of catalyst into the reactor (g/hr)], residence time being defined as the mass of the polymer in the reactor (kg)/the output rate of polymer from the reactor (kg/hr). The volume of the second reactor is at least 10% greater than the volume of the first reactor, and the ratio of length to diameter of the first reactor, L/D(1), is greater than that of the second reactor, L/D(2).

    摘要翻译: 在至少两个串联连接的反应器中制备多峰聚乙烯的方法,其中20-80重量%的高分子量(HMW)聚合物悬浮在第一反应器中,20-80重量%的低分子量 (LMW)聚合物悬浮在第二反应器中。 LMW反应器中的平均活性与平均活性的比例为0.25和1.5,其中每个反应器中的平均活性定义为在反应器中产生的聚乙烯的速率(kgPE / hr)/ [乙烯浓度 在反应器中(mol%)×在反应器中的停留时间(小时)×催化剂进入反应器的进料速率(g / hr)],停留时间定义为反应器中聚合物的质量(kg)/输出 来自反应器的聚合物的速率(kg / hr)。 第二反应器的体积比第一反应器的体积大至少10%,第一反应器的长度与直径之比L / D(1)大于第二反应器的L / D(2)。

    Process for producing propylene block copolymer
    35.
    发明授权
    Process for producing propylene block copolymer 有权
    制备丙烯嵌段共聚物的方法

    公开(公告)号:US08138284B2

    公开(公告)日:2012-03-20

    申请号:US12642153

    申请日:2009-12-18

    申请人: Yasuki Fujiwara

    发明人: Yasuki Fujiwara

    摘要: A production process of a propylene block copolymer, comprising the steps of (I) contacting a solid catalyst component containing titanium atoms, magnesium atoms and halogen atoms with an organoaluminum compound and an external electron donor represented by the defined formula, thereby forming a polymerization catalyst, (II) polymerizing propylene in the presence of the polymerization catalyst, thereby forming a polymer component (1) having an intrinsic viscosity, [η]1, and (III) copolymerizing propylene with an olefin other than propylene in the presence of the polymer component (1), thereby forming a polymer component (2) having an intrinsic viscosity, [η]2, which is three times or more [η]1.

    摘要翻译: 一种丙烯嵌段共聚物的制造方法,包括以下步骤:(I)使含有钛原子,镁原子和卤素原子的固体催化剂组分与有机铝化合物和由定义的式表示的外部电子给体接触,从而形成聚合催化剂 ,(II)在聚合催化剂存在下聚合丙烯,从而形成具有特性粘度[η]的聚合物组分(1),和(III)在丙烯存在下使丙烯与丙烯以外的烯烃共聚 聚合物组分(1),从而形成具有特性粘度[[eegr]] 2的聚合物组分(2),其为[3]以上3倍以上。

    Main catalyst component for olefin polymerization, a process for preparing the same and a catalyst comprising the same
    38.
    发明授权
    Main catalyst component for olefin polymerization, a process for preparing the same and a catalyst comprising the same 有权
    用于烯烃聚合的主要催化剂组分,其制备方法和包含其的催化剂

    公开(公告)号:US07985814B2

    公开(公告)日:2011-07-26

    申请号:US11714255

    申请日:2007-03-06

    IPC分类号: C08F4/44

    摘要: The present invention provides a main catalyst component for olefin polymerization, which is prepared by a process comprising the steps of: (i) reacting a magnesium compound in nascent state having a rational formula (RMgX)y(MgX2), in which R is an alkyl having from 3 to 12 carbon atoms, X is a halogen, and y is a value of from 0.02 to 1, with an alcohol having a formula R1OH, in which R1 is an alkyl having from 2 to 12 carbon atoms, to form a homogeneous solution; (ii) reacting an alkyl magnesium compound having a formula R′MgR″, in which R′ and R″ are independently an alkyl having from 1 to 20 carbon atoms, with the homogeneous solution formed in the step (i) to form a magnesium complex; (iii) reacting the magnesium complex with a halogenating agent in the presence of a silica, to form a magnesium halide-containing intermediate product; and (iv) reacting the magnesium halide-containing intermediate product from the step (iii) with a titanium compound having a formula Ti(OR2)mCl4-m, in which R2 is an alkyl having from 1 to 10 carbon atoms and m is an integer of from 0 to 4, to form a titanium-containing main catalyst component. The main catalyst component of the invention, when used together with an orgaoaluminium cocatalyst component in a single polymerization stage in one reactor to catalyze the polymerization of ethylene to polyethylene, gives a polyethylene having a molecular weight distribution of from 6 to 10.

    摘要翻译: 本发明提供了一种用于烯烃聚合的主要催化剂组分,其通过包括以下步骤的方法制备:(i)使具有合理式(RMgX)y(MgX 2)的初生状态的镁化合物反应,其中R为 具有3至12个碳原子的烷基,X是卤素,y是0.02至1的值,其中具有式R1OH的醇,其中R1是具有2至12个碳原子的烷基,以形成 均匀溶液; (ii)使具有式R'MgR“的烷基镁化合物与其中R'和R”独立地为具有1至20个碳原子的烷基与步骤(i)中形成的均相溶液反应,形成镁 复杂; (iii)在二氧化硅存在下使镁络合物与卤化剂反应,形成含卤化镁的中间产物; 和(iv)使来自步骤(iii)的含卤化镁的中间产物与具有式Ti(OR 2)m Cl 4-m的钛化合物反应,其中R 2是具有1至10个碳原子的烷基,m是 0〜4的整数,形成含钛的主催化剂成分。 本发明的主要催化剂组分当在一个反应​​器中的单一聚合阶段中与有机铝助催化剂组分一起催化乙烯聚乙烯时,得到分子量分布为6至10的聚乙烯。

    Process for producing olefin polymer
    39.
    发明授权
    Process for producing olefin polymer 有权
    生产烯烃聚合物的方法

    公开(公告)号:US07960486B2

    公开(公告)日:2011-06-14

    申请号:US12534311

    申请日:2009-08-03

    IPC分类号: C08F2/38 C08F4/44 C07C2/74

    摘要: The purpose of the present invention is provite a process for producing an olefin polymer, which can produce an olefin polymer having a higher molecular weight even in the presence of hydrogen and can obtain an olefin polymer having good powder characteristics by lowering hydrogen concentration efficiently in polymerizing an olefin in the presence of hydrogen by use of a gas phase reaction vessel. There is provided a process for producing an olefin polymer comprising the steps of: using a gas phase reaction vessel; polymerizing an olefin by use of a catalyst for olefin polymerization in the presence of hydrogen; adding a hydrogenation catalyst into the gas phase reaction vessel; and adding a polymerization activity depressant.

    摘要翻译: 本发明的目的是提供一种制备烯烃聚合物的方法,其可以生产即使在氢气存在下具有较高分子量的烯烃聚合物,并且可以通过在聚合中有效降低氢浓度来获得具有良好粉末特性的烯烃聚合物 在氢存在下通过使用气相反应容器的烯烃。 提供了一种生产烯烃聚合物的方法,包括以下步骤:使用气相反应容器; 在氢气存在下使用烯烃聚合催化剂聚合烯烃; 向气相反应容器中加入氢化催化剂; 并加入聚合活性抑制剂。