Viscosity breaking process for olefin polymers
    61.
    发明授权
    Viscosity breaking process for olefin polymers 有权
    烯烃聚合物的粘度破坏过程

    公开(公告)号:US08618224B2

    公开(公告)日:2013-12-31

    申请号:US13893530

    申请日:2013-05-14

    申请人: BASF SE

    摘要: Disclosed is a method for viscosity breaking of a polypropylene polymer, a polypropylene copolymer or a polypropylene polymer blend, which process comprises adding a chain transfer agent and an initiator to a polypropylene polymer, polypropylene copolymer or polypropylene polymer blend and heating the resultant composition. The chain transfer agent has a Cs value of greater than or equal to about 0.04 as measured in ethylene polymerization at 130° C. The initiator is for example an organic or inorganic peroxide, a carbon based radical generator, a bis azo compound, a stable nitroxyl compound, a sterically hindered NO-acyl compound or a sterically hindered alkoxyamine compound.

    摘要翻译: 公开了一种聚丙烯聚合物,聚丙烯共聚物或聚丙烯聚合物共混物的粘度破坏方法,该方法包括向聚丙烯聚合物,聚丙烯共聚物或聚丙烯聚合物共混物中加入链转移剂和引发剂,并加热所得组合物。 链转移剂在130℃下在乙烯聚合中测得的Cs值大于或等于约0.04。引发剂是例如有机或无机过氧化物,碳基自由基发生剂,双偶氮化合物,稳定的 硝酰基化合物,空间位阻的N-酰基化合物或空间位阻烷氧基胺化​​合物。

    PROCESS FOR POLYMERIZING PROPYLENE
    62.
    发明申请
    PROCESS FOR POLYMERIZING PROPYLENE 审中-公开
    聚合丙烯的方法

    公开(公告)号:US20130267667A1

    公开(公告)日:2013-10-10

    申请号:US13884078

    申请日:2011-11-08

    IPC分类号: C08F2/04 C08F2/34

    摘要: Process for producing a propylene homopolymer, a propylene random copolymer or a heterophasic propylene polymer, which process comprises the steps of (a) prepolymerisation, (b) slurry phase polymerisation (c) gas phase polymerisation and optionally (d) one or two further gas phase polymerisation(s), whereby the process is performed in the presence of a catalyst system comprising (x) a Ziegler-Natta procatalyst and (y) an organometallic cocatalyst and (z) an external donor represented by formula (II) and/or (III) Si(OCH2CH3)3(NR1R2) (II) or R3nR4mSi(OR5)z (III) wherein R1 and R2 can be the same or different and represent a hydrocarbon group having 1 to 12 carbon atoms and R3 and R4 can be the same or different and represent a hydrocarbon group having 1 to 12 carbon atoms, R5 is methyl or ethyl, z is 2 or 3, preferably 2, m is 0 or 1, n is 0 or 1, with the proviso that n+m+z=4, the external donor being added in an amount of 3 to 30 wt %, based on the total amount of external donor added, to the prepolymerisation step and in an amount of 70 to 97 wt %, based on the total amount of external donor added, to the slurry polymerisation step.

    摘要翻译: 制备丙烯均聚物,丙烯无规共聚物或多相丙烯聚合物的方法,该方法包括以下步骤:(a)预聚合,(b)淤浆相聚合(c)气相聚合和任选地(d)一种或两种另外的气体 其中该方法在催化剂体系存在下进行,所述催化剂体系包含(x)齐格勒 - 纳塔前催化剂和(y)有机金属助催化剂和(z)由式(II)表示的外给体和/或 (III)Si(OCH 2 CH 3)3(NR 1 R 2)(II)或R 3 n R 4 m Si(OR 5)z(III)其中R 1和R 2可以相同或不同,表示具有1至12个碳原子的烃基,且R 3和R 4可以 相同或不同,表示具有1至12个碳原子的烃基,R 5是甲基或乙基,z是2或3,优选2,m是0或1,n是0或1,条件是n + + z = 4,外用供体加入量为3〜30重量%,基于加入的外用供体总量, 至预聚合步骤,并且以浆料聚合步骤为基础,以加入的外用供体的总量为70至97重量%的量。

    PROCESS FOR PREPARING HIGH-REACTIVITY ISOBUTENE HOMO- OR COPOLYMERS
    65.
    发明申请
    PROCESS FOR PREPARING HIGH-REACTIVITY ISOBUTENE HOMO- OR COPOLYMERS 有权
    制备高反应性异丁基苯酚或共聚物的方法

    公开(公告)号:US20130041121A1

    公开(公告)日:2013-02-14

    申请号:US13568421

    申请日:2012-08-07

    IPC分类号: C08F110/10 C08F4/14 C08F4/26

    摘要: Preparation of high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 50 mol % by polymerization of isobutene or isobutene-comprising monomer mixtures in the presence of Lewis acids suitable as polymerization catalysts or of complexes which are effective as polymerization catalysts and are formed from Lewis acids and donors, and in the presence of initiators, wherein the initiators used are organic sulfonic acids Z—SO3H in which the variable Z denotes an alkyl radical, haloalkyl radical, cycloalkyl radical, aryl radical or arylalkyl radical.

    摘要翻译: 通过在适合作为聚合催化剂的路易斯酸存在下异丁烯或含异丁烯的单体混合物的聚合制备具有至少50mol%的聚异丁烯链末端亚乙烯基双键含量的高反应性异丁烯均聚物或共聚物,或者 作为聚合催化剂有效并且由路易斯酸和供体形成的络合物,并且在引发剂的存在下,其中所用的引发剂是有机磺酸Z-SO 3 H,其中变量Z表示烷基,卤代烷基,环烷基, 芳基或芳基烷基。

    Slurry phase polymerisation process
    69.
    发明授权
    Slurry phase polymerisation process 有权
    浆相聚合工艺

    公开(公告)号:US08202951B2

    公开(公告)日:2012-06-19

    申请号:US12733381

    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 first polymer is made in suspension in a first reactor and 80-20 wt % of a second polymer is made in suspension in a second reactor in the presence of the first polymer, and a stream or slurry containing the resulting polymer is withdrawn from the second reactor and transferred to a flash tank operating at a pressure and temperature such that at least 50 mol % of the liquid component of the slurry, or the non-polymer component of the stream entering the flash tank, is withdrawn from the flash tank as a vapour, wherein the concentration in the stream or slurry entering the flash tank of components having a molecular weight below 50 g/mol, Clights (mol %), satisfies the equation Clights

    摘要翻译: 在至少两个串联的反应器中制备多峰聚乙烯的方法,其中将20-80重量%的第一聚合物悬浮在第一反应器中,并将80-20重量%的第二聚合物制成悬浮液 在第一聚合物存在下的第二反应器和含有所得聚合物的料流或浆料从第二反应器中排出并转移到在压力和温度下操作的闪蒸罐中,使得至少50mol%的 浆料或进入闪蒸罐的料流的非聚合物组分作为蒸气从闪蒸罐中取出,其中进入闪蒸罐的流或浆料中的分子量低于50g / mol的浓度, Cl值(mol%)满足等式Clight <7 + 0.07(40-Tc)+4.4(Pc-0.8)-7(CH2 / CEt)其中Tc和Pc分别为温度(℃)和压力 在从闪蒸罐取出的蒸气的位置处, 被冷凝,CH2和CEt分别是氢气和乙烯闪蒸罐中的摩尔浓度。

    Slurry phase polymerisation process
    70.
    发明授权
    Slurry phase polymerisation process 有权
    浆相聚合工艺

    公开(公告)号:US08183334B2

    公开(公告)日:2012-05-22

    申请号:US12733380

    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 in the presence of the HMW polymer, wherein the solids concentration in the second LMW reactor, defined as the mass of polymer divided by the total mass of slurry, is at least 35 wt %, most preferably between 45 wt % and 60 wt %, and/or the ratio of solids concentration in the first reactor to that in the second reactor is maintained at less than 1.0, preferably between 0.6 and 0.8, and further wherein the volume of the second reactor is at least 10%, preferably at least 30% and more preferably at least 50% greater than the volume of the first reactor.

    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)聚合物在HMW聚合物存在下在第二反应器中悬浮制备,其中定义为聚合物质量除以浆料总质量的第二LMW反应器中的固体浓度为至少35重量% ,最优选在45重量%至60重量%之间,和/或第一反应器中的固体浓度与第二反应器中的固体浓度之比保持在小于1.0,优选在0.6至0.8之间,此外,其中 第二反应器比第一反应器的体积大至少10%,优选至少30%,更优选至少50%。