Process for producing ethylene/&agr;-olefin copolymer
    1.
    发明授权
    Process for producing ethylene/&agr;-olefin copolymer 失效
    生产乙烯/α-烯烃共聚物的方法

    公开(公告)号:US06207774B1

    公开(公告)日:2001-03-27

    申请号:US08946857

    申请日:1997-10-08

    IPC分类号: C08F464

    摘要: An ethylene/&agr;-olefin copolymer of a weight-average molecular weight of not less than 40000 is produced by copolymerization of ethylene with an &agr;-olefin having three or more carbons by use of an olefin polymerization catalyst at a polymerization temperature of not lower than 120° C., the olefin polymerization catalyst comprising, as constitutional components, a) a metallocene compound, b) an ionizing ionic compound, and c) an organoaluminum compound, the ionizing ionic compound (b) being a compound which is capable of changing the metallocene compound (a) into a cationic form and does not further react the cationic form of the metallocene compound. This process produces an ethylene/&agr;-olefin copolymer of high molecular weight in high efficiency.

    摘要翻译: 重均分子量不小于40000的乙烯/α-烯烃共聚物是通过使用烯烃聚合催化剂在不低于3的聚合温度下使乙烯与具有3个或更多个碳原子的α-烯烃共聚制备的 作为组成成分的烯烃聚合催化剂包含a)茂金属化合物,b)电离离子化合物和c)有机铝化合物,电离化离子化合物(b)是能够改变的化合物 茂金属化合物(a)成阳离子形式,不会使阳离子形式的茂金属化合物进一步反应。 该方法以高效率产生高分子量的乙烯/α-烯烃共聚物。

    Process for production of olefin polymer
    3.
    发明授权
    Process for production of olefin polymer 失效
    生产烯烃聚合物的方法

    公开(公告)号:US06639030B2

    公开(公告)日:2003-10-28

    申请号:US08545254

    申请日:1995-10-19

    IPC分类号: C08F4642

    摘要: A process for production of an olefin polymer is provided which comprises polymerization of ethylene and/or &agr;-olefin of three of more carbons at a polymerization temperature of not lower than 120° C. with a catalyst comprising a specific metallocene compound having a substituted fluorenyl group, and a compound which reacts with the metallocene compound to form a cationic metallocene compound. The olefin polymer or copolymer produced by the process has narrow composition distribution, narrow molecular weight distribution, and a high molecular weight.

    摘要翻译: 提供一种生产烯烃聚合物的方法,其包括在不低于120℃的聚合温度下聚合具有三个以上碳原子的乙烯和/或α-烯烃与包含具有取代的芴基的特定茂金属化合物的催化剂 和与金属茂化合物反应形成阳离子金属茂化合物的化合物。 通过该方法制备的烯烃聚合物或共聚物具有窄的组成分布,窄的分子量分布和高分子量。

    Process for producing ethylene/&agr;-olefin copolymer
    6.
    发明授权
    Process for producing ethylene/&agr;-olefin copolymer 失效
    生产乙烯/α-烯烃共聚物的方法

    公开(公告)号:US06313240B1

    公开(公告)日:2001-11-06

    申请号:US08198579

    申请日:1994-02-18

    IPC分类号: C08F452

    摘要: A process for producing an ethylene/&agr;-olefin copolymer is provided in which ethylene is copolymerized with an &agr;-olefin having three or more carbons by use of an olefin polymerization catalyst at a polymerization temperature of not lower than 120° C. The olefin polymerization catalyst comprises, as constitutional components, a) a metallocene compound comprising hafnium, b) an ionizing ionic compound, and c) an organoaluminum compound, the ionizing ionic compound (b) being a compound which is capable of changing the metallocene compound (a) into a cationic form and does not further react the cationic form of the metallocene compound.

    摘要翻译: 提供了一种生产乙烯/α-烯烃共聚物的方法,其中乙烯与聚合温度不低于120℃的烯烃聚合催化剂与具有三个或更多个碳的α-烯烃共聚。烯烃聚合 催化剂包含作为构成成分的a)包含铪的茂金属化合物,b)电离离子化合物和c)有机铝化合物,电离化离子化合物(b)是能够改变茂金属化合物(a)的化合物, 成为阳离子形式,不会使阳离子形式的茂金属化合物进一步反应。