| 发明名称 |
Oxygen Tailoring of Polyethylene |
| 摘要 |
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. |
| 申请公布号 |
US2015038624(A1) |
申请公布日期 |
2015.02.05 |
| 申请号 |
US201214382812 |
申请日期 |
2012.12.12 |
| 申请人 |
Exxonmobil Chemical Patents Inc. |
发明人 |
Allermann Gerd A.;Van Hoyweghen Danny;Best Steven A.;Poloso Anthony;De Ketelaere Nicolas M. |
| 分类号 |
C08J3/00;C09D123/06;C08J3/20 |
主分类号 |
C08J3/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process for oxygen-tailoring a polyethylene, the process comprising:
(a) 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 (b) 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). |
| 地址 |
Baytown TX US |
