中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

57 records (took 0.023 seconds)

    PROCESS FOR GAS-PHASE POLYMERIZATION OF OLEFINS
    2.
    发明申请
    PROCESS FOR GAS-PHASE POLYMERIZATION OF OLEFINS 审中-公开

    公开(公告)号：WO2018177701A1

    公开(公告)日：2018-10-04

    申请号：PCT/EP2018/055537

    申请日：2018-03-07

    Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

    Inventor： MEI, Gabriele ,  MAZZUCCO, Antonio ,  CAPUTO, Tiziana ,  BALESTRA, Enrico ,  TARTARI, Davide ,  MASSARI, Paola

    IPC: C08F2/00 ,  C08F2/01 ,  C08F2/34 ,  C08L23/10

    Abstract: Process for the preparation of heterophasic propylene copolymer compositions (RAH ECO) comprising a random propylene copolymer (RACO) and an elastomeric propylene copolymer (BlPO), the process being carried out in a reactor having two interconnected polymerization zones, a riser and a down- comer, wherein the growing polymer particles: (a) flow through the first of said polymerization zones, the riser, under fast fluidization conditions in the presence of propylene and of ethylene and/or an alpha-olefin having from 4 to 10 carbon atoms, thus obtaining the random propylene copolymer (RACO); (b) leave the riser and enter the second of said polymerization zones, the downcomer, through which they flow downward in a densified form in the presence of propylene and of ethylene and/or an alpha-olefin having from 4 to 10 carbon atoms, wherein the concentration of ethylene and/or of the alpha-olefin in the downcomer is higher than in the riser, thus obtaining the elastomeric propylene copolymer (Bl PO); (c) leave the downcomer and are reintroduced into the riser, thus establishing a circulation of polymer between the riser and the downcomer.

    PROCESS FOR THE GAS-PHASE POLYMERIZATION OF OLEFINS
    4.
    发明申请
    PROCESS FOR THE GAS-PHASE POLYMERIZATION OF OLEFINS 审中-公开
    油相的气相聚合方法

    公开(公告)号：WO2009080660A1

    公开(公告)日：2009-07-02

    申请号：PCT/EP2008/067772

    申请日：2008-12-17

    Applicant: BASELL POLIOLEFINE ITALIA S.R.L. ,  MAZZUCCO, Antonio ,  RINALDI, Riccardo ,  SOFFRITTI, Silvia ,  BALESTRA, Enrico ,  PENZO, Giuseppe ,  MEI, Gabriele

    Inventor： MAZZUCCO, Antonio ,  RINALDI, Riccardo ,  SOFFRITTI, Silvia ,  BALESTRA, Enrico ,  PENZO, Giuseppe ,  MEI, Gabriele

    IPC: B01J19/24 ,  C08F10/00

    CPC classification number: B01J19/2435 ,  B01J2219/00164 ,  B01J2219/00166 ,  B01J2219/00173 ,  C08F10/00 ,  C08F110/06 ,  C08F210/06 ,  C08F2/34 ,  C08F2/001 ,  C08F2500/05 ,  C08F210/16

    Abstract: A process for the gas-phase polymerization of α-olefms carried out in two interconnected polymerization zones, wherein the growing polymer particles flow through the first of said polymerization zones (riser) under fast fluidization conditions, leave said riser and enter the second of said polymerization zones (downcomer) through which they flow downward in a densified form, the process being characterized in that: (a) the gas mixture present in the riser is totally or partially prevented from entering the downcomer by introducing into the upper part of said downcomer a liquid stream LB having a composition different from the gaseous mixture present in the riser; (b) the ratio R between the flow rate F p of polymer circulated between said downcomer and said riser and the flow rate LB of said liquid being adjusted in a range from 10 to 50.

    Abstract translation: 一种用于在两个相互连接的聚合区中进行的α-烯烃的气相聚合的方法，其中生长的聚合物颗粒在快速流化条件下流过第一个所述聚合区（提升管），离开所述提升管并进入所述 聚合区（降液管），通过它们以致密化形式向下流动，该方法的特征在于：（a）通过引入所述降液管的上部，存在于提升管中的气体混合物被全部或部分地防止进入降液管 具有与提升管中存在的气体混合物不同的组成的液体流LB; （b）在所述降液管和所述提升管之间循环的聚合物的流量Fp与所述液体的流量LB之间的比R调节在10至50的范围内。

    PROCESS FOR THE PREPARATION OF ETHYLENE POLYMERS
    9.
    发明申请
    PROCESS FOR THE PREPARATION OF ETHYLENE POLYMERS 审中-公开
    制备乙烯聚合物的方法

    公开(公告)号：WO2014108283A1

    公开(公告)日：2014-07-17

    申请号：PCT/EP2013/077051

    申请日：2013-12-18

    Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

    Inventor： COVEZZI, Massimo ,  MEI, Gabriele ,  Baita, Pietro ,  Marturano, Lorella

    IPC: C08F10/02 ,  C08F2/00 ,  C08F4/64

    CPC classification number: C08F10/02 ,  C08F2/005 ,  C08F2410/02 ,  C08F110/02 ,  C08F2500/12 ,  C08F2500/18 ,  C08F2500/24

    Abstract: A process for the preparation of ethylene polymers comprising polymerizing ethylene, optionally with one or more α-olefin comonomers, in the presence of: (i) a solid catalyst component comprising titanium, magnesium, halogen and optionally an internal electron-donor compound, (ii) an aluminum alkyl compound, and (iii) an antistatic compound selected among the hydroxyesters with at least two free hydroxyl groups, wherein the weight ratio of aluminum alkyl compound to solid catalyst component is higher than 0.80 and the weight ratio of antistatic compound to aluminum alkyl compound is higher than 0.10.

    Abstract translation: 一种用于制备乙烯聚合物的方法，包括在以下存在下聚合乙烯，任选与一种或多种α-烯烃共聚单体：（i）包含钛，镁，卤素和任选的内电子给体化合物的固体催化剂组分（ ii）铝烷基化合物，和（iii）选自具有至少两个游离羟基的羟基酯中​​的抗静电化合物，其中烷基铝化合物与固体催化剂组分的重量比高于0.80，抗静电化合物与 铝烷基化合物高于0.10。

    PROCESS FOR FEEDING A CATALYST IN A POLYMERIZATION REACTOR
    10.
    发明申请
    PROCESS FOR FEEDING A CATALYST IN A POLYMERIZATION REACTOR 审中-公开
    在聚合反应器中加入催化剂的方法

    公开(公告)号：WO2010076289A1

    公开(公告)日：2010-07-08

    申请号：PCT/EP2009/067906

    申请日：2009-12-23

    Applicant: BASELL POLIOLEFINE ITALIA S.R.L. ,  BAITA, Pietro ,  KARER, Rainer ,  MEIER, Gerhardus ,  FUNK, Guido ,  MEI, Gabriele

    Inventor： BAITA, Pietro ,  KARER, Rainer ,  MEIER, Gerhardus ,  FUNK, Guido ,  MEI, Gabriele

    IPC: B01J8/00 ,  B01J8/24 ,  C08F10/00

    CPC classification number: B01J8/0015 ,  B01J8/1827 ,  B01J2208/00752 ,  B01J2208/00769 ,  C08F10/00 ,  C08F210/16 ,  C08F2/34 ,  C08F210/08 ,  C08F2500/12

    Abstract: A process for introducing a catalyst powder based on a titanium compound supported on magnesium halide into a gas-phase olefin polymerization reactor, characterized in that it comprises: (a) storing the catalyst powder under an atmosphere of a liquid C 3 -C 12 alkane; (b) withdrawing from step (a) a measured amount of said catalyst powder by means of a rotary valve; (c) transferring said metered amount of catalyst powder to a catalyst activation section by a continuous pick-up flow of a liquid C 3 -C 12 alkane; (d) contacting the catalyst powder with a liquid phase comprising an organo-aluminum compound and optionally an external donor compound, at a temperature ranging from -20 °C to 60 °C; (e) introducing the activated catalyst powder in one or more gas-phase olefin polymerization reactors, where a gaseous mixture comprising at least one alpha-olefin is subjected to polymerization.

    Abstract translation: 将基于负载在卤化镁上的钛化合物的催化剂粉末引入气相烯烃聚合反应器的方法，其特征在于，其包括：（a）将催化剂粉末在液体C 3 -C 12烷烃的气氛下储存; （b）通过旋转阀从步骤（a）中取出测量量的所述催化剂粉末; （c）通过液体C 3 -C 12烷烃的连续提取流将所述计量的催化剂粉末转移到催化剂活化部分; （d）在-20℃至60℃的温度范围内使催化剂粉末与包含有机铝化合物和任选的外部供体化合物的液相接触; （e）将活化的催化剂粉末引入一个或多个气相烯烃聚合反应器中，其中包含至少一种α-烯烃的气体混合物进行聚合。

Patent Agency Ranking