公开(公告)号：US09321911B2

公开(公告)日：2016-04-26

申请号：US13851752

申请日：2013-03-27

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Pradeep P. Shirodkar ,  Jianya Cheng ,  Peijun Jiang ,  Arturo Leyva ,  Steven A. Best

IPC: C08L23/08 ,  C08L23/06 ,  C08F210/18 ,  C08F210/14 ,  C08F210/16

CPC classification number: C08L23/06 ,  C08F210/14 ,  C08F210/16 ,  C08F210/18 ,  C08L23/08 ,  C08L23/0815 ,  C08L2205/025 ,  C08L2207/07

Abstract: The present invention relates to a cast film comprising a composition comprising more than 25 wt % (based on the weight of the composition) of one or more linear ethylene polymers having a g′vis of 0.97 or more and an Mw of 20,000 g/mol or more and at least 0.1 wt % of a branched modifier where the modifier has a) a g′vis of 0.90 or less; b) an Mw of 100,000 g/mol or more; c) an Mw/Mn of 3.0 or more; d) an Mz/Mn of 7.0 or more; e) a shear thinning ratio of 40 or more; and f) an I21 of 20 dg/min or less; where the film has at least a 10% reduction in neck-in as compared to the same composition formed into a film under the same conditions, except that the branched modifier is absent.

Abstract translation: 本发明涉及包含组合物的流延薄膜，该组合物包含大于25wt％（基于组合物的重量）的一种或多种线性乙烯聚合物，其具有0.97以上的Mw和20,000g / mol的Mw， 更多和至少0.1重量％的支化改性剂，其中改性剂的a'ag'vis为0.90以下; b）Mw为100,000g / mol以上; c）Mw / Mn为3.0以上; d）Mz / Mn为7.0以上; e）剪切稀化比为40以上; 和f）20dg / min以下的I21; 除了不存在支化改性剂之外，与相同条件下形成膜的相同组合物相比，膜的颈缩度至少降低10％。

公开(公告)号：US09284415B2

公开(公告)日：2016-03-15

申请号：US14382812

申请日：2012-12-12

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Gerd A. Allermann ,  Danny Van Hoyweghen ,  Steven A. Best ,  Anthony Poloso ,  Nicolas M. De Ketelaere

IPC: C08J3/00 ,  C08J3/20 ,  C09D123/06 ,  H01B3/44

CPC classification number: C08J3/005 ,  C08F8/00 ,  C08F2810/10 ,  C08F2810/40 ,  C08J3/20 ,  C08J2323/06 ,  C09D123/06 ,  H01B3/441 ,  C08F8/50 ,  C08F8/06 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/12

Abstract: Processes are disclosed for oxygen-tailoring polyethylene, particularly polyethylenes suitable for wire and cable applications. One process includes conveying a first polyethylene having a melt index ≦5.0 and an MWD ≦5.0 through mixing or extrusion apparatus having a feed zone, a melt-mixing zone downstream of the feed zone, and a melt zone downstream of the melt-mixing zone, wherein the temperature of the first polyethylene in the melt zone ranges from about 180° C. to about 300° C.; and contacting the first polyethylene with an amount of an oxygen-containing gas having at least about 20.0 parts by weight oxygen per million per parts by weight of the first polyethylene (ppm (wt) O2). Polyethylene compositions having improved properties, particularly for wire and cable applications are disclosed.

Abstract translation: 公开了用于氧气聚乙烯，特别是适用于电线和电缆应用的聚乙烯的方法。 一种方法包括通过具有进料区，进料区下游的熔融混合区和熔融区下游的熔融区的混合或挤出装置输送具有熔体指数为＆lt; E1和5.0 | MWD＆NlE; 5.0的第一聚乙烯， 混合区，其中熔融区中第一聚乙烯的温度为约180℃至约300℃; 并且将第一聚乙烯与一定量的含氧气体接触，所述含氧气体具有至少约20.0重量份的氧每百万重量份的第一聚乙烯（ppm（重量）O 2））。 公开了具有改进性能的聚乙烯组合物，特别是用于电线和电缆应用。