PROCESS FOR THE POLYOLEFIN FINISHING
    1.
    发明申请
    PROCESS FOR THE POLYOLEFIN FINISHING 审中-公开
    聚烯烃饰面工艺

    公开(公告)号:WO2008015228A3

    公开(公告)日:2008-04-03

    申请号:PCT/EP2007057953

    申请日:2007-08-01

    Abstract: A process to perform the finishing of polyolefins produced by gas-phase catalytic polymerization of one or more a-olefms in the presence of a polymerization diluent selected from a C 3 -C 5 alkane, wherein the polyolefm granules discharged from the gas-phase reactor are subjected to: (1) a first degassing step in which said polyolefm is counter-currently contacted with a gaseous stream containing at least 85% by mol of a stripping agent selected from a C 3 -C 5 alkane, said gaseous stream being continuously derived from the monomer recovery section of the polymerization plant; (2) a second degassing step in which said polyolefm is counter-currently contacted with steam, the amount of steam being from 10 to 200 Kg per 1000 kg of polyolefin.

    Abstract translation: 一种在选自C 3 -C 5 O 3的聚合稀释剂的存在下,通过一种或多种α-烯烃的气相催化聚合制备的聚烯烃的精制方法 烷烃,其中从气相反应器排出的聚烯烃颗粒经受:(1)第一脱气步骤,其中所述聚烯烃与包含至少85摩尔%选择的汽提剂的气流反向接触 来自C 3 -C 5烷烃,所述气流连续地衍生自聚合装置的单体回收部分; (2)第二脱气步骤,其中所述聚烯烃与蒸汽反向接触,每1000kg聚烯烃的蒸汽量为10-200Kg。

    PROCESS FOR THE (CO)POLYMERIZATION OF ETHYLENE
    4.
    发明申请
    PROCESS FOR THE (CO)POLYMERIZATION OF ETHYLENE 审中-公开
    乙烯(CO)聚合方法

    公开(公告)号:WO2005058982A1

    公开(公告)日:2005-06-30

    申请号:PCT/EP2004/013372

    申请日:2004-11-24

    Abstract: A process for preparing a broad molecular weight polyethylene carried out in the presence of a catalyst system comprising (i) a solid catalyst component comprising Mg, Ti, halogen, and optionally an internal electron donor compound, and (ii) an Al-alkyl cocatalyst said process comprising at least two step of polymerization (a) and (b), in which, - in a first step (a) ethylene is polymerized in the presence of a molecular weight regulator in order to produce a ethylene (co)polymer, and in a further step (b), which is carried out in the presence of an external electron donor compound added to this polymerization step as a fresh reactant, ethylene is copolymerized with an alpha olefin of formula CH2=CHR, in which R is a C1-C20 hydrocarbon group, to produce an ethylene copolymer having a molecular weight higher than that of the copolymer produced in step (b).

    Abstract translation: 一种制备在催化剂体系存在下进行的宽分子量聚乙烯的方法,包括(i)包含Mg,Ti,卤素和任选的内电子给体化合物的固体催化剂组分,和(ii)Al-烷基助催化剂 所述方法包括至少两个聚合步骤(a)和(b)),其中 - 在第一步(a)中,在分子量调节剂存在下聚合乙烯以产生乙烯(共)聚合物, 并且在另外的步骤(b)中,其在作为新的反应物加入到该聚合步骤中的外部电子给体化合物存在下进行,乙烯与式CH 2 = CHR的α-烯烃共聚,其中R是 C1-C20烃基,得到分子量高于步骤(b)中制备的共聚物的乙烯共聚物。

    PROCESS FOR FEEDING A CATALYST IN A POLYMERIZATION REACTOR
    6.
    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

    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。

    PROCESS FOR THE POLYOLEFIN FINISHING
    9.
    发明申请
    PROCESS FOR THE POLYOLEFIN FINISHING 审中-公开
    聚烯烃整理工艺

    公开(公告)号:WO2008015228A2

    公开(公告)日:2008-02-07

    申请号:PCT/EP2007/057953

    申请日:2007-08-01

    Abstract: A process to perform the finishing of polyolefins produced by gas-phase catalytic polymerization of one or more α-olefms in the presence of a polymerization diluent selected from a C 3 -C 5 alkane, wherein the polyolefm granules discharged from the gas-phase reactor are subjected to: (1) a first degassing step in which said polyolefm is counter-currently contacted with a gaseous stream containing at least 85% by mol of a stripping agent selected from a C 3 -C 5 alkane, said gaseous stream being continuously derived from the monomer recovery section of the polymerization plant; (2) a second degassing step in which said polyolefm is counter-currently contacted with steam, the amount of steam being from 10 to 200 Kg per 1000 kg of polyolefin.

    Abstract translation: 在聚合稀释剂存在下进行通过气相催化聚合一种或多种α-烯烃生产的聚烯烃的精制方法,所述聚合稀释剂选自C 3 - 其中从气相反应器排出的聚烯烃颗粒经历:(1)第一脱气步骤,其中所述聚烯烃与包含至少85的气流逆流接触 摩尔%的选自C 3 -C 5链烷烃的汽提剂,所述气体物流连续得自聚合装置的单体回收部分; (2)第二脱气步骤,其中所述聚烯烃与蒸汽逆流接触,蒸汽量为每1000kg聚烯烃10至200Kg。

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