Process for producing polymers
    11.
    发明申请
    Process for producing polymers 审中-公开
    生产聚合物的方法

    公开(公告)号:US20090124768A1

    公开(公告)日:2009-05-14

    申请号:US12231443

    申请日:2008-09-02

    IPC分类号: C08F4/69

    摘要: Catalyst systems for producing olefin polymers, methods of making such catalyst systems, and processes for producing olefin polymers using such catalyst systems are provided. The catalyst system comprises a first component and a second component, where the first component comprises chromium on a support, where the support comprises phosphated alumina, and the second component comprises: (1) a metal halide compound, a transition metal compound, and a precipitating agent, or (2) a substituted or unsubstituted dicyclopentadienyl chromium compound deposited onto a calcined oxide carrier, where the carrier includes silica, alumina, aluminophosphate, or any mixed oxide thereof.

    摘要翻译: 提供了用于生产烯烃聚合物的催化剂体系,制备这种催化剂体系的方法,以及使用这种催化剂体系生产烯烃聚合物的方法。 催化剂体系包括第一组分和第二组分,其中第一组分在载体上包含铬,其中载体包含磷酸化氧化铝,第二组分包括:(1)金属卤化物化合物,过渡金属化合物和 沉淀剂,或(2)沉积到煅烧氧化物载体上的取代或未取代的二环戊二烯基铬化合物,其中载体包括二氧化硅,氧化铝,磷酸铝或其任何混合氧化物。

    Methods of preparing a polymerization catalyst
    12.
    发明授权
    Methods of preparing a polymerization catalyst 有权
    制备聚合催化剂的方法

    公开(公告)号:US08697599B2

    公开(公告)日:2014-04-15

    申请号:US13029309

    申请日:2011-02-17

    摘要: A method comprising (a) contacting a support and a chromium-containing compound to form chromium-containing support, (b) heat treating the chromium-containing support in an oxidizing atmosphere to form a treated support, (c) contacting the treated support with carbon monoxide to form a CO-contacted support, and (d) contacting the CO-contacted support with hydrogen to form a catalyst. A method comprising oxidizing a chromium-treated support to form a polymerization catalyst, contacting the polymerization catalyst with carbon monoxide to form a reduced polymerization catalyst, contacting the reduced polymerization catalyst with hydrogen to form an activated polymerization catalyst, and contacting the activated polymerization catalyst with ethylene in a reaction zone under suitable reaction conditions to form a random copolymer. A method comprising reducing a polymerization catalyst comprising Cr(VI) to form a polymerization catalyst comprising Cr(II), and treating the polymerization catalyst comprising Cr(II) with hydrogen.

    摘要翻译: 一种方法,包括(a)使载体和含铬化合物接触以形成含铬载体,(b)在氧化气氛中热处理含铬载体以形成经处理的载体,(c)使经处理的载体与 一氧化碳以形成CO-接触的载体,和(d)使CO-接触的载体与氢接触以形成催化剂。 一种方法,包括氧化铬处理的载体以形成聚合催化剂,使聚合催化剂与一氧化碳接触以形成还原的聚合催化剂,使还原的聚合催化剂与氢接触以形成活化的聚合催化剂,并使活化的聚合催化剂与 乙烯在合适的反应条件下在反应区中形成无规共聚物。 一种包括还原包含Cr(VI)的聚合催化剂以形成包含Cr(II)的聚合催化剂并用氢气处理包含Cr(II)的聚合催化剂的方法。

    SYSTEM AND METHOD FOR CATALYST ACTIVATION
    14.
    发明申请
    SYSTEM AND METHOD FOR CATALYST ACTIVATION 有权
    催化剂活化的系统和方法

    公开(公告)号:US20110201768A1

    公开(公告)日:2011-08-18

    申请号:US12706559

    申请日:2010-02-16

    IPC分类号: C08F4/69 B01J23/26 G05D7/00

    摘要: A system and method for activating chromium catalyst, including: increasing temperature of a chromium catalyst at a first rate for a first period of time to a first temperature; and increasing temperature of the chromium catalyst at a second rate for a second period of time from the first temperature to a second temperature, wherein the first rate is greater than the second rate, and wherein the first period precedes the second period.

    摘要翻译: 一种用于活化铬催化剂的体系和方法,包括:将第一时间段的铬催化剂的温度升至第一温度; 以及以第二速率将铬催化剂的温度从第一温度升至第二温度第二时间段,其中第一速率大于第二速率,并且其中第一时段在第二周期之前。

    Methods of Activating Chromium Catalysts
    18.
    发明申请
    Methods of Activating Chromium Catalysts 有权
    活性铬催化剂的方法

    公开(公告)号:US20100075840A1

    公开(公告)日:2010-03-25

    申请号:US12565559

    申请日:2009-09-23

    IPC分类号: B01J23/26

    摘要: New methods for activating chromium catalysts for polymerization processes decrease the amount of time required for activation and increase catalyst activity. Rapid heating to a first temperature is followed by a first hold period before heating to a higher second temperature and maintaining the second temperature for a second hold period. In one aspect, the overall activation process takes less than 10 hours.

    摘要翻译: 用于活化聚合反应的铬催化剂的新方法减少了活化所需的时间和增加催化剂活性。 快速加热到第一温度之后是加热到更高的第二温度之前的第一保持期,并将第二温度保持第二保持期。 在一个方面,整体激活过程需要不到10小时。