发明授权
- 专利标题: Process for making tailored polyetheylene resins for sheets
- 专利标题(中): 制造量身定制的聚乙烯树脂的方法
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申请号: US12282223申请日: 2007-03-09
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公开(公告)号: US09492963B2公开(公告)日: 2016-11-15
- 发明人: William J. Michie, Jr. , Todd A. Hogan , Felipe Martinez Barreneche , Anthony C. Neubauer , Stephane Costeux
- 申请人: William J. Michie, Jr. , Todd A. Hogan , Felipe Martinez Barreneche , Anthony C. Neubauer , Stephane Costeux
- 申请人地址: US MI Midland
- 专利权人: Dow Global Technologies LLC
- 当前专利权人: Dow Global Technologies LLC
- 当前专利权人地址: US MI Midland
- 国际申请: PCT/US2007/006143 WO 20070309
- 国际公布: WO2007/106417 WO 20070920
- 主分类号: B29C47/08
- IPC分类号: B29C47/08 ; B29C47/00 ; B29C47/10 ; C08J5/18 ; B29C47/92 ; B29K23/00
摘要:
This invention relates to coupling of polyethylene resins, more specifically coupling of polyethylene resins for use in extruded profiles, especially extruded profiles for sheet extrusion and cut sheet thermoforming applications and geomembranes. The process involves conveying a HDPE resin through an extruder, wherein the extruder comprises a feed zone, a first melt zone downstream of the feed zone, a second melt zone downstream of the first melt zone, and a third melt zone downstream of the second melt zone. The resin is melted in the first zone, contacted with oxygen in the second melt zone, and contacted antioxidant in the third melt zone.