Invention Grant
US08367763B2 Polyethylene composition for pressure pipes with enhanced flexibility
有权
用于压力管的聚乙烯组合物具有增强的柔性
- Patent Title: Polyethylene composition for pressure pipes with enhanced flexibility
- Patent Title (中): 用于压力管的聚乙烯组合物具有增强的柔性
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Application No.: US12440637Application Date: 2007-09-28
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Publication No.: US08367763B2Publication Date: 2013-02-05
- Inventor: Mats Bäckman , Lars-Erik Ahlstrand , Per-Ola Hagstrand , Magnus Palmlöf
- Applicant: Mats Bäckman , Lars-Erik Ahlstrand , Per-Ola Hagstrand , Magnus Palmlöf
- Applicant Address: FI Porvoo
- Assignee: Borealis Technology Oy
- Current Assignee: Borealis Technology Oy
- Current Assignee Address: FI Porvoo
- Agency: Fay Sharpe LLO
- Priority: EP06020872 20061004
- International Application: PCT/EP2007/008482 WO 20070928
- International Announcement: WO2008/040504 WO 20080410
- Main IPC: C08K5/00
- IPC: C08K5/00 ; B29D23/00
Abstract:
The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower average molecular weight than fraction (B); (ii) the base resin has a density of 940 to 947 kg/m3; (iii) the polyethylene composition has an MFR5 of 0.1 to 0.5 g/10 min; and (iv) the polyethylene composition has an SHI(2.7/210) of 10 to 49. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.
Public/Granted literature
- US20100178443A1 POLYETHYLENE COMPOSITION FOR PRESSURE PIPES WITH ENHANCED FLEXIBILITY Public/Granted day:2010-07-15
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