Invention Grant
US08450426B2 Multimodal polyethylene resin for pipe made by a single-site catalyst
有权
用于由单中心催化剂制成的管道的多峰聚乙烯树脂
- Patent Title: Multimodal polyethylene resin for pipe made by a single-site catalyst
- Patent Title (中): 用于由单中心催化剂制成的管道的多峰聚乙烯树脂
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Application No.: US12517103Application Date: 2007-11-21
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Publication No.: US08450426B2Publication Date: 2013-05-28
- Inventor: Magnus Palmlöf , Solveig Johansson , Per-Ola Hagstrand , Sune Olsson
- Applicant: Magnus Palmlöf , Solveig Johansson , Per-Ola Hagstrand , Sune Olsson
- Applicant Address: FI Porvoo
- Assignee: Borealis Technology Oy
- Current Assignee: Borealis Technology Oy
- Current Assignee Address: FI Porvoo
- Agency: Milbank, Tweed, Hadley & McCloy LLP
- Priority: EP06024952 20061201
- International Application: PCT/EP2007/010092 WO 20071121
- International Announcement: WO2008/064809 WO 20080605
- Main IPC: C08L23/02
- IPC: C08L23/02
Abstract:
The present invention relates to a polyethylene composition comprising a polyethylene base resin, which comprises a. an ethylene copolymer as fraction (A), and b. an ethylene homo- or copolymer as fraction (B), with fraction (A) having a lower molecular weight than fraction (B), wherein the polyethylene base resin is obtainable in a polymerisation process in which a single-site catalyst. (SSC) is used in the polymerisation of at least one of fractions (A) and (B), and the base resin has (i) a density of below 940 kg/m3, and (ii) a MFR2 at 190 ° C./2.16 kg of 0.001 to 10 g/10 min, and the composition has (iii) a flexural modulus of from 300 to 820 MPa, and to a process for the production of such a composition, and to a pipe produced from such a composition.
Public/Granted literature
- US20110111152A9 Multimodal Polyethylene Resin for Pipe Made by a Single-site Catalyst Public/Granted day:2011-05-12
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