Polyethylene copolymers having low n-hexane extractable
    1.
    发明授权
    Polyethylene copolymers having low n-hexane extractable 有权
    具有低正己烷可萃取性的聚乙烯共聚物

    公开(公告)号:US07652113B2

    公开(公告)日:2010-01-26

    申请号:US10465194

    申请日:2003-06-19

    IPC分类号: C08F210/00 C08F10/14

    摘要: A novel process for the polymerization of olefins is provided. The process involves contacting at least one olefin with a Ziegler-Natta type catalyst in the presence of a specified compound that results in the production of polymeric products having a narrower molecular weight distribution. Also provide is a process for narrowing the molecular weight distribution of a polyolefin comprising contacting an olefin, a Ziegler-Natta catalyst and a compound specified herein. Further provided are novel polyethylenes, and films and articles produced therefrom.

    摘要翻译: 提供了一种用于烯烃聚合的新方法。 该方法包括在指定化合物存在下使至少一种烯烃与齐格勒 - 纳塔型催化剂接触,导致产生具有较窄分子量分布的聚合产物。 还提供了使聚烯烃的分子量分布变窄的方法,其包括使烯烃,齐格勒 - 纳塔催化剂和本文指定的化合物接触。 还提供了新型聚乙烯,以及由其制备的薄膜和制品。

    Process for producing ethylene/olefin interpolymers
    3.
    发明授权
    Process for producing ethylene/olefin interpolymers 有权
    生产乙烯/烯烃互聚物的方法

    公开(公告)号:US06417298B1

    公开(公告)日:2002-07-09

    申请号:US09387363

    申请日:1999-08-31

    IPC分类号: C08F204

    摘要: There is described a process utilizing metallocene catalyst for producing ethylene/olefin interpolymers which, for a given melt index and density, have a reduced melting peak temperature (Tm). The process involves contacting ethylene and at least one other olefin under polymerization conditions with a metallocene catalyst and at least one modifier comprising at least one element from Group 15 and/or Group 16 in amounts sufficient to reduce the melting peak temperature of the ethylene/olefin interpolymer. Also described herein are novel ethylene/olefin interpolymers resulting from the process.

    摘要翻译: 描述了一种利用茂金属催化剂生产乙烯/烯烃互聚物的方法,对于给定的熔体指数和密度,熔融指数和密度具有降低的熔融峰温度(Tm)。 该方法包括在聚合条件下使乙烯和至少一种其它烯烃与金属茂催化剂和至少一种包含至少一种来自第15族和/或第16族的元素的改性剂以足以降低乙烯/烯烃的熔融峰温度的量 互聚物 本文还描述了由该方法得到的新型乙烯/烯烃互聚物。

    Process for producing polyolefins
    4.
    发明授权
    Process for producing polyolefins 有权
    生产聚烯烃的方法

    公开(公告)号:US06300432B1

    公开(公告)日:2001-10-09

    申请号:US09387667

    申请日:1999-08-31

    IPC分类号: C08F462

    摘要: A novel process for producing homopolymers and interpolymers of olefins which involves contacting an olefin and/or an olefin and at least one or more other olefin(s) under polymerization conditions with at least one Ziegler-Natta catalyst comprising a component comprising at least one transition metal and a co-catalyst comprising at least one organometallic compound and at least one compound comprising at least one carbon-oxygen-carbon linkage (C—O—C) of the formula R1—O(—R2—O)m—R3 in amounts sufficient to reduce the electrostatic charge in the polymerization medium. Also disclosed is a process for reducing electrostatic charge in an olefin polymerization medium.

    摘要翻译: 一种用于生产烯烃均聚物和互聚物的新方法,其包括在聚合条件下使烯烃和/或烯烃和至少一种或多种其它烯烃与至少一种齐格勒 - 纳塔催化剂接触,所述齐格勒 - 纳塔催化剂包含至少一个转化 金属和助催化剂,其包含至少一种有机金属化合物和至少一种包含至少一种式R 1 -O(-R 2 -O)m -R 3的碳 - 碳 - 碳键(COC)的化合物,其量足以减少 聚合介质中的静电荷。 还公开了一种减少烯烃聚合介质中的静电荷的方法。

    PROCESS FOR THE POLYMERIZATION OF OLEFINS; NOVEL POLYETHYLENES, AND FILMS AND ARTICLES PRODUCED THEREFROM
    8.
    发明申请
    PROCESS FOR THE POLYMERIZATION OF OLEFINS; NOVEL POLYETHYLENES, AND FILMS AND ARTICLES PRODUCED THEREFROM 有权
    烯烃聚合方法; 新型聚乙烯,以及生产的薄膜和文章

    公开(公告)号:US20080146760A1

    公开(公告)日:2008-06-19

    申请号:US11841666

    申请日:2007-08-20

    IPC分类号: C08F210/14

    摘要: A novel process for the polymerization of olefins is provided. The process involves contacting at least one olefin with a Ziegler-Natta type catalyst in the presence of a specified compound that results in the production of polymeric products having a narrower molecular weight distribution. Also provide is a process for narrowing the molecular weight distribution of a polyolefin comprising contacting an olefin, a Ziegler-Natta catalyst and a compound specified herein. Further provided are novel polyethylenes, and films and articles produced therefrom.

    摘要翻译: 提供了一种用于烯烃聚合的新方法。 该方法包括在指定化合物存在下使至少一种烯烃与齐格勒 - 纳塔型催化剂接触,导致产生具有较窄分子量分布的聚合产物。 还提供了使聚烯烃的分子量分布变窄的方法,其包括使烯烃,齐格勒 - 纳塔催化剂和本文指定的化合物接触。 还提供了新型聚乙烯,以及由其制备的薄膜和制品。

    Process for producing polyethylene
    9.
    发明授权
    Process for producing polyethylene 有权
    生产聚乙烯的方法

    公开(公告)号:US06271321B1

    公开(公告)日:2001-08-07

    申请号:US09251969

    申请日:1999-02-17

    IPC分类号: C08F416

    摘要: A novel process for producing homopolymers and copolymers of ethylene which involves contacting ethylene and/or ethylene and at least one or more other olefin(s) under polymerization conditions with a Ziegler-Natta type catalyst containing at least one or more internal electron donors, trimethylaluminum and at least one or more external electron donors containing at least one carbon-oxygen-carbon linkage (C—O—C) selected from the group consisting of Formula 1, R1—CH2—O—CH2—R2, Formula 2, Formula 3, R5—O—R6, and Formula 4, R7—O(—R8—O)n—R9. Also provided are films and articles produced therefrom.

    摘要翻译: 一种用于生产乙烯均聚物和共聚物的新方法,其包括在聚合条件下使乙烯和/或乙烯与至少一种或多种其它烯烃与含有至少一种或多种内部电子给体的齐格勒 - 纳塔型催化剂接触,三甲基铝 和至少一种或多种含有选自由式1,式2,式3和式4组成的组中的至少一个碳 - 碳 - 碳键(COC)的外部电子给体。还提供了由其制备的薄膜和制品。