COMPONENTS AND CATALYSTS FOR THE POLYMERIZATION OF OLEFINS

    公开(公告)号:US20210309676A1

    公开(公告)日:2021-10-07

    申请号:US17267601

    申请日:2019-07-25

    摘要: A solid catalyst component for the polymerization of olefins CH2═CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, made from or containing Mg, Ti, Bi, halogen and an electron donor obtained from a process including the steps:
    (a) dissolving a Mg(OR)2 compound wherein R groups, equal to or different from each other, are C1-C15 hydrocarbon groups optionally containing a heteroatom selected from O, N and halogen, in an organic liquid medium, thereby forming a first liquid mixture; (b) contacting the first liquid mixture (a) with TiCl4, thereby forming a second liquid mixture absent a solid phase, and (c) subjecting the second liquid mixture (b) to conditions, whereby solid catalyst particles are formed, wherein (i) a Bi compound and (ii) a bidentate electron donor compound are present in one or more of steps (a) to (c) and/or contacted with the solid catalyst particles obtained from (c).

    CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS

    公开(公告)号:US20190248930A1

    公开(公告)日:2019-08-15

    申请号:US16337779

    申请日:2017-09-25

    IPC分类号: C08F10/02

    摘要: A process for the preparation of a solid catalyst component for the homo or copolymerization of olefins, wherein the solid catalyst component is made from or contains Mg, Ti, halogen and an electron donor selected from cycloalkyl ethers, wherein the process includes the steps of (a) dissolving a Mg based compound and a TiCl3 based compound in a liquid medium further made from or containing a cycloalkyl ether and a compound of formula R2OH where R2 is a C1-C20 hydrocarbon group, in which the Ti/Mg molar ratio ranges from 0.1 to 0.5, the cycloalkyl ether/Mg ratio ranges from 1 to 4 and the ROH/Mg molar ratio ranges from 1 to 4; and (b) adding, to the solution coming from step (a), SiCl4 in an amount such that the R2OH/SiCl4 molar ratio ranges from 0.5 to 1.5 and maintaining the temperature in the range 50-150° C. thereby precipitating the solid catalyst component particles.

    PRE-POLYMERIZED CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS
    10.
    发明申请
    PRE-POLYMERIZED CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS 审中-公开
    用于烯烃聚合的预聚合催化剂组分

    公开(公告)号:US20160137759A1

    公开(公告)日:2016-05-19

    申请号:US14899296

    申请日:2014-06-10

    IPC分类号: C08F10/02

    摘要: The present technology relates to a pre-polymerized catalyst component for the polymerization of olefins, characterized by a non-stereospecific solid catalyst component comprising Ti, Mg and a halogen and an amount of a (co)polymer of an alpha-olefin CH2═CHR1, where R is a C1-C12 hydrocarbon group ranging from 0.1 to 500 g per g of said solid catalyst component. In some embodiments, the (co)polymer is characterized by an isotacticity, expressed in terms isotactic pentads, of higher than 60 molar % and an intrinsic viscosity, measured in tetraline at 135° C., of at least 1.0 dL/g.

    摘要翻译: 本技术涉及用于烯烃聚合的预聚合催化剂组分,其特征在于包含Ti,Mg和卤素的非立体特异性固体催化剂组分和一定量的α-烯烃CH 2 = CHR( 其中R为每克所述固体催化剂组分0.1-500克的C1-C12烃基。 在一些实施方案中,(共)聚合物的特征在于以等于十五摩尔%的全同立构五单元组表示的全同立构规整度,并且在135℃下在四氢化萘中测得的特性粘度为至少1.0dL / g。