| 发明名称 | Peroxide crosslinked ethylene polymer pressure pipe and a method for the preparation thereof | ||
| 摘要 | A peroxide crosslinked ethylene polymer pressure pipe and a method for the preparation thereof are described. The pipe is characterized in that it comprises an ethylene polymer with a density of less than 950 kg/m3 obtained by polymerization with a single-site catalyst and having a shear thinning index, SHI5/300 of less than 20 and a MWD of <10. The method is characterized in that it comprises polymerizing ethylene, optionally together with at least one comonomer, with a single-site catalyst to provide the above defined ethylene polymer, forming the ethylene polymer into a pipe by extrusion and crosslinking it. | ||
| 申请公布号 | US8968851(B2) | 申请公布日期 | 2015.03.03 |
| 申请号 | US200510592633 | 申请日期 | 2005.03.08 |
| 申请人 | Borealis Technology Oy | 发明人 | Walter Philipp;Pakkanen Anneli;Oderkerk Jeroen;Palmlof Magnus;Hojer Lars;Gustafsson Bill;Dreng Tore |
| 分类号 | F16L9/12;B32B1/08 | 主分类号 | F16L9/12 |
| 代理机构 | Merchant & Gould P.C. | 代理人 | Merchant & Gould P.C. |
| 主权项 | 1. A peroxide crosslinked ethylene polymer pressure pipe comprising a unimodal ethylene polymer with a density of 928-947 kg/m3 and a MFR21 of 0.1-40 g/10 min obtained by polymerisation with a single-site catalyst and having a shear thinning index, SHI5/300 of less than 20 and a MWD of less than 10, and wherein the ethylene polymer of the pressure pipe is peroxide crosslinked. | ||
| 地址 | FI | ||