| 发明名称 | Coated pipe and propylene polymer composition therefor | ||
| 摘要 | The invention relates to a coated pipe comprising a core, an adhesion layer coated on the core and an outer coating layer coated on the adhesion layer, wherein at least the adhesion layer comprises a propylene polymer composition comprising: (A) a propylene homo- or copolymer, and (B) an elastomeric component and to the use of such a propylene polymer composition for coating a pipe. | ||
| 申请公布号 | US8911840(B2) | 申请公布日期 | 2014.12.16 |
| 申请号 | US200912919779 | 申请日期 | 2009.01.27 |
| 申请人 | Borealis Technology Oy | 发明人 | Leiden Leif;Purmonen Jouni;Alastalo Kauno |
| 分类号 | B29D22/00;C09D123/10;C08L23/16 | 主分类号 | B29D22/00 |
| 代理机构 | Milbank, Tweed, Hadley & McCloy LLP | 代理人 | Milbank, Tweed, Hadley & McCloy LLP |
| 主权项 | 1. A coated pipe comprising a core, an adhesion layer, and an outer coating layer, wherein the adhesion layer is intermediate the core and the outer coating layer, wherein the adhesion layer and the outer coating layer comprise a propylene polymer composition comprising: (A) a propylene copolymer, and (B) an elastomeric component; wherein the elastomeric component is an elastomeric ethylene copolymer; wherein the coated pipe has an impact resistance at −20° C. of 15 to 40 J/mm according to EN 1411; and wherein the propylene copolymer (A) comprises an ethylene content of about 8% in the outer coating layer and about 11% in the adhesion layer. | ||
| 地址 | Porvoo FI | ||