发明授权
- 专利标题： Copolymers
- 专利标题（中）： 共聚物
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申请号： US12736926申请日： 2009-06-04
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公开(公告)号： US09587055B2公开(公告)日： 2017-03-07
- 发明人: Choon Kooi Chai , Dominique Jan
- 申请人： Choon Kooi Chai , Dominique Jan
- 申请人地址： GB London
- 专利权人： INEOS MANUFACTURING BELGIUM NV
- 当前专利权人： INEOS MANUFACTURING BELGIUM NV
- 当前专利权人地址： GB London
- 代理机构： Nixon & Vanderhye P.C.
- 优先权： EP08157848 20080609
- 国际申请： PCT/EP2009/056882 WO 20090604
- 国际公布： WO2010/000557 WO 20100107
- 主分类号： F16L9/12
- IPC分类号： F16L9/12 ; C08F210/16 ; C08F4/76 ; F16L9/127 ; C08F4/659 ; C08F4/6592
摘要：
Copolymers comprising ethylene and alpha-olefins having (a) a density (D) in the range 930-960/g/m3 (b) a melt index (MI2) in the range 0.1-3.5 g/10 min (c) a melt elastic modulus G′ (G″=500 Pa) in the range 40 to 150 Pa, and (d) a ratio of complex dynamic shear viscosities η*(0.1)/η(100) in the range 1.5 to 5.5. The copolymers are suitable for use as Polyethylenes of Raised Temperature Resistance (PE-RT) for use in hot water piping systems. The copolymers may be prepared by use of meltallocene catalyst systems. Pipes having a time to failure of ≧500 hrs measured according to ISO 1167 at 110° C. and 2.6 MPa prepared in a single reactor are also disclosed.
公开/授权文献
- US20110086191A1 NOVEL COPOLYMERS 公开/授权日：2011-04-14
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