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    Process for the polymerization of propylene
    3.
    发明授权
    Process for the polymerization of propylene 有权

    公开(公告)号：US10106631B2

    公开(公告)日：2018-10-23

    申请号：US15319889

    申请日：2014-06-20

    Applicant: SABIC GLOBAL TECHNOLOGIES B.V. ,  Abderrahman Meddad ,  Mansour Taftaf ,  Hesham Al-Shobilly

    Inventor： Abderrahman Meddad ,  Mansour Taftaf ,  Hesham Al-Shobilly

    IPC: C08F110/06

    Abstract: The invention relates to a process for the preparation of polypropylene having —a molecular weight (Mw) of 450,000-950,000, —a molecular weight distribution of 3-6, —a melt flow in the range of 7-14 dg/min measured with a load of 21.6 kg at 230° C. or 0.05-2 dg/min measured with a load of 2.16 kg at 230° C. and —a xylene soluble content of 2-6 wt % by converting propylene into the polypropylene without pre-polymerization in the presence of a polymerization catalyst under a condition where the volume ratio of H2 to propylene is at most 0.0020, wherein the catalyst comprises a catalyst component, a co-catalyst and an external donor, wherein the catalyst component is obtained by a process wherein a compound with formula Mg(OAlk)xCly wherein x is larger than 0 and smaller than 2, y equals 2−x and each Alk, independently, represents an alkyl group, is contacted with a titanium tetraalkoxide and/or an alcohol in the presence of an inert dispersant to give an intermediate reaction product and wherein the intermediate reaction product is contacted with titanium tetrachloride in the presence of an internal donor, and wherein the molar ratio of the co-catalyst to the external donor is 3.3-5.2, preferably 3.8-4.4.

    Procatalyst for polymerization of olefins
    4.
    发明授权
    Procatalyst for polymerization of olefins 有权

    公开(公告)号：US10005859B2

    公开(公告)日：2018-06-26

    申请号：US15314963

    申请日：2015-06-01

    Applicant: SABIC Global Technologies B.V.

    Inventor： Khalid Abdullah Al-Bahily ,  Jaiprakash Brijlal Sainani ,  Shirish Shrikant Abhyankar ,  Gennadii Dimitrievich Bukatov ,  Martin Alexander Zuideveld ,  Mansour Taftaf ,  Aurora Alexandra Batinas-Geurts ,  Osamah Al-Humaidan ,  Vladimir Aleksandrovich Zakharov ,  Sergei Andreevich Sergeev

    IPC: C08F110/06

    Abstract: The present invention relates to a procatalyst comprising the compound represented by formula A as an internal electron donor, wherein: R81, R82, R83, R84, R85, and R86 are the same or different and are independently selected from a group consisting of hydrogen or a straight, branched and cyclic hydrocarbyl group, selected from alkyl, alkenyl, aryl, aralkyl or alkylaryl groups, and one or more combinations thereof, preferably having 1 to 20 carbon atoms; R87 is a hydrogen or a linear, branched or cyclic hydrocarbyl group, selected from alkyl, alkenyl, aryl, aralkyl, alkoxycarbonyl or alkylaryl groups, and one or more combinations thereof, preferably having from 1 to 20 carbon atoms; and each R80 group is independently a linear, branched or cyclic hydrocarbyl group selected from alkyl, alkenyl, aryl, aralkyl, or alkylaryl groups, and one or more combinations thereof, preferably having from 1 to 30 carbon atoms; N is nitrogen atom; O is oxygen atom; and C is carbon atom. The present invention also relates to a process for preparing said polymerization procatalyst and to a polymerization catalyst system comprising said procatalyst, a cocatalyst and optionally an external electron donor. Furthermore, the present invention relates to a polyolefin obtainable by the process according to the present invention and to the use of the compound of formula A as in internal electron donor in catalysts for polymerization of olefins.

    PROCESS FOR THE POLYMERIZATION OF PROPYLENE
    6.
    发明申请
    PROCESS FOR THE POLYMERIZATION OF PROPYLENE 审中-公开

    公开(公告)号：US20170129973A1

    公开(公告)日：2017-05-11

    申请号：US15319889

    申请日：2014-06-20

    Applicant: Abderrahman Meddad ,  Mansour Taftaf ,  Hesham Al-Shobilly ,  SABIC GLOBAL TECHNOLOGIES B.V.

    Inventor： Abderrahman Meddad ,  Mansour Taftaf ,  Hesham Al-Shobilly

    IPC: C08F110/06

    CPC classification number: C08F110/06 ,  C08F2500/01 ,  C08F2500/12 ,  C08F2500/24 ,  C08F4/6565

    Abstract: The invention relates to a process for the preparation of polypropylene having —a molecular weight (Mw) of 450,000-950,000, —a molecular weight distribution of 3-6, —a melt flow in the range of 7-14 dg/min measured with a load of 21.6 kg at 230° C. or 0.05-2 dg/min measured with a load of 2.16 kg at 230° C. and —a xylene soluble content of 2-6 wt % by converting propylene into the polypropylene without pre-polymerization in the presence of a polymerization catalyst under a condition where the volume ratio of H2 to propylene is at most 0.0020, wherein the catalyst comprises a catalyst component, a co-catalyst and an external donor, wherein the catalyst component is obtained by a process wherein a compound with formula Mg(OAlk)xCly wherein x is larger than 0 and smaller than 2, y equals 2-x and each Alk, independently, represents an alkyl group, is contacted with a titanium tetraalkoxide and/or an alcohol in the presence of an inert dispersant to give an intermediate reaction product and wherein the intermediate reaction product is contacted with titanium tetrachloride in the presence of an internal donor, and wherein the molar ratio of the co-catalyst to the external donor is 3.3-5.2, preferably 3.8-4.4.

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