Process for preparing olefin polymer by slurry loop polymerization having high powder density
    23.
    发明授权
    Process for preparing olefin polymer by slurry loop polymerization having high powder density 有权
    通过具有高粉末密度的浆料环聚合制备烯烃聚合物的方法

    公开(公告)号:US09464147B2

    公开(公告)日:2016-10-11

    申请号:US14364977

    申请日:2012-12-04

    Abstract: The instant invention pertains to a process for preparing an ethylene homo- or copolymer in the presence of a supported chromium catalyst by slurry loop polymerization or copolymerization, whereby the resulting polymer powder has an increased powder density, in which the supported chromium catalyst has a chromium content of from 0.01 to 5 wt.-%, based on the element in the finished catalyst, and shows a particle size distribution measured according to ISO 13320-2009 comprising two main fractions one of which having a d50 of from 15 to 40 μm and the other having a d50 of from 45 to 80 μm said catalyst being further characterized by the fact that less than 10% wt of its catalyst particles has diameter lower than 20 μm.

    Abstract translation: 本发明涉及在负载型铬催化剂存在下通过淤浆环聚合或共聚合制备乙烯均聚物或共聚物的方法,由此得到的聚合物粉末具有增加的粉末密度,其中负载的铬催化剂具有铬 基于成品催化剂中的元素含量为0.01至5重量%,并且显示根据ISO 13320-2009测量的粒度分布,其包含两个主要部分,其中一个具有15至40μm的d 50,以及 另一个具有45至80μm的d 50,所述催化剂的特征还在于其小于10重量%的催化剂颗粒直径小于20μm的事实。

    POLYMERIZATION PROCESS IN THE PRESENCE OF AN ANTISTATIC COMPOSITION
    24.
    发明申请
    POLYMERIZATION PROCESS IN THE PRESENCE OF AN ANTISTATIC COMPOSITION 有权
    抗微生物组合物的聚合过程

    公开(公告)号:US20160130376A1

    公开(公告)日:2016-05-12

    申请号:US14897597

    申请日:2014-06-10

    Abstract: A process for the preparation of polyolefins by polymerizing olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst and an antistatically acting composition in a polymerization reactor, wherein the antistatically acting composition is a mixture comprising an oil-soluble surfactant and water and the use of an antistatically acting composition comprising an oil-soluble surfactant and water as antistatic agent for the polymerization of olefins at temperatures of from 20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst.

    Abstract translation: 在聚合反应器中,在聚合催化剂和抗静电作用组合物的存在下,在20〜200℃的温度和0.1〜20MPa的压力下使烯烃聚合制备聚烯烃的方法,其中抗静电作用组合物 是包含油溶性表面活性剂和水的混合物,并且使用包含油溶性表面活性剂和水的抗静电作用组合物作为用于烯烃聚合的抗静电剂,其温度为20-200℃,压力为0.1 在聚合催化剂存在下为20MPa。

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