Procatalyst for polymerization of olefins

    公开(公告)号:US10246529B2

    公开(公告)日:2019-04-02

    申请号:US15541088

    申请日:2016-01-20

    Abstract: The invention relates to a procatalyst for polymerization of olefins. The invention also relates to a process for preparing said procatalyst. Furthermore, the invention is directed to a catalyst system for polymerization of olefins comprising the said procatalyst, a co-catalyst and optionally an external electron donor; a process of preparing polyolefins by contacting an olefin with said catalyst system and to polyolefins obtained or obtainable by said process. The invention also relates to the use of said procatalyst in the polymerization of olefins.

    Process to prepare procatalyst for polymerization of olefins

    公开(公告)号:US11117989B2

    公开(公告)日:2021-09-14

    申请号:US16337036

    申请日:2017-09-14

    Abstract: The present invention relates to a process for the preparation of a procatalyst suitable for preparing a catalyst composition for olefin polymerization, said process comprising the steps of: Step A) providing or preparing a Grignard compound; Step B) contacting the Grignard compound with a silane compound to give a first intermediate reaction product being a solid support; Step C) activating said solid support, comprising two sub steps: Step C1) contacting the solid support obtained in step B) with at least one first activating compound and a second activating compound; and Step C2) a second activation step by contacting the activated solid support obtained in step C1) with an activating electron donor; to obtain a second intermediate reaction product; Step D) reacting the second intermediate reaction product obtained in step C) with a halogen-containing Ti-compound, optionally an activator and at least one internal electron donor in several sub steps to obtain said procatalyst. The invention moreover relates to a procatalyst, a catalytic system comprising said procatalyst and to a process to prepare polyolefins using said catalyst system and the polyolefins obtained therewith.

    Procatalyst for polymerization of olefins

    公开(公告)号:US10717791B2

    公开(公告)日:2020-07-21

    申请号:US15780538

    申请日:2016-11-23

    Abstract: A procatalyst for polymerization of olefins, which procatalyst is based on a magnesium compound of the formula MgR′R″ wherein R′ is an alkoxide or aryloxide group and R″ is an alkoxide or aryloxide group or halogen, an activator being a monoester and an internal donor represented by a compound according to formula A: as described herein. Also described is a polymerization catalyst system comprising the procatalyst, a co-catalyst and optionally an external electron donor; a process of making a polyolefin, by contacting an olefin with the catalyst system; a polyolefin, obtained by or obtainable by the process; and a polyolefin, having a molecular weight distribution of between 4 and 15, a molecular weight (Mw) of between 300,000 to 1,500,000 g/mol, a melting temperature of more than 150° C., a value for the xylene solubles of less than 4 wt. % and a shaped article therefrom.

    PROCESS TO PREPARE PROCATALYST FOR POLYMERIZATION OF OLEFINS

    公开(公告)号:US20200055968A1

    公开(公告)日:2020-02-20

    申请号:US16336993

    申请日:2017-06-19

    Abstract: The present invention relates to a process for the preparation of a procatalyst suitable for preparing a catalyst composition for olefin polymerization, said process comprising the steps of: Step A) providing or preparing a Grignard compound; Step B) contacting the Grignard compound an alkoxy- or aryloxy silane compound, to give a solid support; Step C) optionally contacting the solid support obtained with at least one activating compound; and Step D) reacting the (activated) support with a halogen-containing Ti-compound as catalytic species, an activator and at least one internal electron donor in several sub steps wherein the internal donor is added in portions during at least two of said stages to obtain a procatalyst. The invention moreover relates to a procatalyst, a catalytic system comprising said procatalyst and to a process to prepare polyolefins using said catalyst system and the polyolefins obtained therewith.

    Process to prepare procatalyst for polymerization of olefins

    公开(公告)号:US11192962B2

    公开(公告)日:2021-12-07

    申请号:US16336993

    申请日:2017-06-19

    Abstract: The present invention relates to a process for the preparation of a procatalyst suitable for preparing a catalyst composition for olefin polymerization, said process comprising the steps of: Step A) providing or preparing a Grignard compound; Step B) contacting the Grignard compound an alkoxy- or aryloxy silane compound, to give a solid support; Step C) optionally contacting the solid support obtained with at least one activating compound; and Step D) reacting the (activated) support with a halogen-containing Ti-compound as catalytic species, an activator and at least one internal electron donor in several sub steps wherein the internal donor is added in portions during at least two of said stages to obtain a procatalyst. The invention moreover relates to a procatalyst, a catalytic system comprising said procatalyst and to a process to prepare polyolefins using said catalyst system and the polyolefins obtained therewith.

    A PROCATALYST FOR POLYMERIZATION OF OLEFINS
    10.
    发明申请

    公开(公告)号:US20200299421A1

    公开(公告)日:2020-09-24

    申请号:US15780498

    申请日:2016-11-28

    Abstract: A procatalyst for polymerization of olefins, based on a magnesium compound of the formula MgR′R″ wherein R′ is an alkoxide or aryloxide group and R″ is an alkoxide or aryloxide group or halogen that has been reacted with a tetravalent titanium halide, an activator being a monoester and an internal donor of formula B: as described herein. Also described is a polymerization catalyst system comprising the procatalyst, a co-catalyst and optionally an external electron donor; a process of making a polyolefin by contacting an olefin with the catalyst system; a polyolefinobtained by or obtainable by the process; and a polyolefin, preferably a polypropylene, having a molecular weight distribution of between 3 and 15, a molecular weight (Mw) of between 200,000 to 1,000,000 g/mol, a melting temperature of more than 145° C., a value for the xylene solubles of less than 4 wt. % and a shaped article therefrom.

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