Steaming of a polyolefin
    81.
    发明授权
    Steaming of a polyolefin 有权
    聚烯烃的蒸汽

    公开(公告)号:US08344099B2

    公开(公告)日:2013-01-01

    申请号:US13142365

    申请日:2009-12-23

    CPC classification number: C08F6/005 C08F6/02 C08L23/00

    Abstract: A method for treating polymer particles with steam in a steaming vessel downstream a polymerization process, the method comprising contacting polymer particles with a counter-current flow of steam, wherein the flow rate of steam entering said steaming vessel is continuously maintained proportional to the production rate of said polymer in said polymerization process and to the gradient between the temperature (Tout) of the polymer exiting said steaming vessel and the temperature (Tin) of the polymer entering said steaming vessel.

    Abstract translation: 一种在聚合过程下游的蒸汽容器中用蒸汽处理聚合物颗粒的方法,所述方法包括使聚合物颗粒与逆流蒸汽接触,其中进入所述蒸汽容器的蒸汽的流速与生产率成正比 在所述聚合方法中的所述聚合物和离开所述蒸汽容器的聚合物的温度(Tout)与进入所述蒸汽容器的聚合物的温度(Tin)之间的梯度。

    Catalyst for the Polymerization of Olefins
    87.
    发明申请
    Catalyst for the Polymerization of Olefins 审中-公开
    烯烃聚合催化剂

    公开(公告)号:US20120220739A1

    公开(公告)日:2012-08-30

    申请号:US13321488

    申请日:2010-05-31

    CPC classification number: C08F10/02 C08F4/6465

    Abstract: The present invention relates to catalysts systems for the polymerization of ethylene and its mixtures with olefins CH2═CHR, wherein R is an alkyl, cycloalkyl or aryl radical having 1-12 carbon atoms, comprising (A) a solid catalyst component comprising Ti, Mg, halogen, and optionally an electron donor compound in a donor/Ti molar ratio lower than 1, (B) an aluminum alkyl compound and (C) a silicon compound of formula RImSi(ORII)n in which RI is C1-C20 alkyl group, RII is a secondary or tertiary alkyl group or a cycloalkyl having from 3 to 20 carbon atoms, m is an integer ranging from 0 to 3, and n is (4-m). The catalyst of the invention is suitably used in (co)polymerization processes of ethylene to prepare (co)polymers having narrow Molecular Weight Distribution (MWD) and high activity.

    Abstract translation: 本发明涉及用于乙烯及其与烯烃CH 2 = CHR的混合物的聚合的催化剂体系,其中R是具有1-12个碳原子的烷基,环烷基或芳基,其包含(A)固体催化剂组分,其包含Ti,Mg ,卤素和任选的供体/ Ti摩尔比低于1的电子给体化合物,(B)烷基铝化合物和(C)式RImSi(ORII)n的硅化合物,其中R 1是C 1 -C 20烷基 RII为仲或叔烷基或碳原子数3〜20的环烷基,m为0〜3的整数,n为(4-m)。 本发明的催化剂适用于乙烯的(共)聚合方法,以制备具有窄分子量分布(MWD)和高活性的(共)聚合物。

    Propylene Polymer Compositions
    88.
    发明申请
    Propylene Polymer Compositions 审中-公开
    丙烯聚合物组合物

    公开(公告)号:US20120178883A1

    公开(公告)日:2012-07-12

    申请号:US13496598

    申请日:2010-08-25

    Abstract: A propylene composition comprising (percent by weight): A) 70%-95%, of a propylene homopolymer having a Polydispersity Index (P.I.) value of from 4.6 to 10, a fraction insoluble in xylene at 25° C., higher than 90%, and MFR L (Melt Flow Rate according to ISO 1133, condition L, i.e. 230° C. and 2.16 kg load) from 100 to 250 g/10 min; B) 5%-30%, of a copolymer of propylene containing from 36% to 44% of ethylene derived units; the composition having an intrinsic viscosity of the fraction soluble in xylene at 25° C. comprised between 3 and 5 dl/g.

    Abstract translation: 包含(重量%)的丙烯组合物:A)70%-95%的多分散指数(PI)值为4.6至10的丙烯均聚物,在25℃下不溶于二甲苯的级分,高于90 %和MFR L(根据ISO 1133的熔体流动速率,条件L,即230℃和2.16kg负荷)为100-250g / 10min; B)含有36%至44%乙烯衍生单元的丙烯共聚物的5%-30%; 该组合物的特性粘度在25℃下溶于二甲苯的馏分的特性粘度为3至5dl / g。

    Reinforced polypropylene pipe
    89.
    发明授权
    Reinforced polypropylene pipe 失效
    加强聚丙烯管

    公开(公告)号:US08153217B2

    公开(公告)日:2012-04-10

    申请号:US11919094

    申请日:2006-03-24

    Abstract: A single- or multilayer threaded pipe, wherein at least one layer is produced from a polyolefin composition comprising (percentages express on the basis of the sum of components (A) and (B)): (A) 65-90 wt % of a heterophasic polypropylene composition comprising (percentages expressed on the basis of the polypropylene composition): (1) 65-95 wt % of a propylene polymer selected from propylene homopolymer and co- and terpolymers of propylene with a comonomer selected from ethylene, a C4-C10 alpha-olefin and a mixture thereof, said polymer containing 0.1-10 wt % of comonomer units, being insoluble in xylene at 25° C. in an amount over 85 wt %, having a polydispersity index ranging from 4 to 13 and an intrinsic viscosity ([η]1) value of over 2.2 dl/g; and (2) 5-35 wt % of an olefin polymer of ethylene with propylene or a C4-C10 alpha-olefin having an ethylene content ranging from 15 to 85 wt % and an intrinsic viscosity of the fraction soluble in xylene ([η]2) of at least 1.4 dl/g; wherein the ratio of the intrinsic viscosity value of propylene polymer (1) to that of olefin polymer (2) ([η]/[η]2) ranges from 0.45 to 1.6; and (B) 10-35 wt % of a at least one filler selected among calcium carbonate, talc, wollastonite or mixtures thereof.

    Abstract translation: 单层或多层螺纹管,其中至少一层由聚烯烃组合物制成,所述聚烯烃组合物包含(基于组分(A)和(B)的总和)的百分比):(A)65-90重量% 包含(基于聚丙烯组合物表示的百分比)的多相聚丙烯组合物:(1)65-95重量%的丙烯聚合物,其选自丙烯均聚物和丙烯与共聚单体的共聚和三元共聚物,所述共聚单体选自乙烯,C 4 -C 10 α-烯烃及其混合物,所述聚合物含有0.1-10重量%的共聚单体单元,其在25℃下不溶于二甲苯,其量为大于85重量%,多分散指数为4至13,特性粘度 ([&eegr;] 1)值超过2.2 dl / g; 和(2)5-35重量%的乙烯与丙烯或乙烯含量为15至85重量%的C 4 -C 10α-烯烃的烯烃聚合物和可溶于二甲苯的馏分的特性粘度([&eggr; ] 2)至少为1.4dl / g; 其中丙烯聚合物(1)的特性粘度值与烯烃聚合物(2)的特性粘度值的比(2)([&eggr] / [eegr])2)的范围为0.45至1.6; 和(B)10-35重量%的选自碳酸钙,滑石,硅灰石或其混合物的至少一种填料。

    Process for the Preparation of Impact Resistant Propylene Polymer Compositions
    90.
    发明申请
    Process for the Preparation of Impact Resistant Propylene Polymer Compositions 有权
    制备耐冲击丙烯聚合物组合物的方法

    公开(公告)号:US20120083576A1

    公开(公告)日:2012-04-05

    申请号:US13376893

    申请日:2010-06-16

    Abstract: A process for the preparation of propylene polymer compositions carried out in the presence of a catalyst system comprising (a) a solid catalyst component having average particle size ranging from 15 to 80 μm comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being present in an amount from 50 to 90% by mol with respect to the total amount of donors and selected from succinates and the other being selected from 1,3 diethers, (b) an aluminum alkyl and optionally (c) an external electron donor compound, and comprising the following steps: (i) contacting the catalyst components (a), (b) and optionally (c); (ii) pre-polymerizing up to forming amounts of polymer from about 0.1 up to about 1000 g per gram of solid catalyst component (a); (iii) polymerizing propylene producing a propylene (co)polymer being for at least 85% by weight of insoluble in xylene at 25° C. and (iv) in a successive step, carried out in gas-phase, polymerizing mixtures of ethylene with α-olefins CH2═CHR in which R is a hydrocarbon radical having 1-10 carbon atoms, to produce the said ethylene copolymer.

    Abstract translation: 一种制备丙烯聚合物组合物的方法,所述组合物在催化剂体系存在下进行,所述催化剂体系包含(a)平均粒度为15-80μm的固体催化剂组分,其包含卤化镁,至少具有Ti- 卤素键和至少两种电子给体化合物,其中一种以相对于供体总量为50-90%摩尔量存在,选自琥珀酸盐,另一种选自1,3-二醚,(b) 烷基铝和任选的(c)外电子给体化合物,并包括以下步骤:(i)使催化剂组分(a),(b)和任选的(c)接触; (ii)每克固体催化剂组分(a)预聚合至约0.1至约1000g的聚合物的形成量; (iii)聚合丙烯,产生丙烯(共)聚合物,其在25℃下为不溶于二甲苯的至少85重量%,和(iv)在连续步骤中,在气相聚合乙烯混合物 其中R是具有1-10个碳原子的烃基的α-烯烃CH 2 = CHR,以制备所述乙烯共聚物。

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