发明名称 |
Coated Pipes Having Improved Mechanical Properties at Elevated Temperatures and a Method of Production Thereof |
摘要 |
The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol and a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 945 kg/m3 to 958 kg/m3. The coatings have a high stiffness, good properties at elevated temperatures and acceptable stress-cracking properties.
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申请公布号 |
US2010279047(A1) |
申请公布日期 |
2010.11.04 |
申请号 |
US20080809573 |
申请日期 |
2008.12.10 |
申请人 |
BOREALIS TECHNOLOGY OY |
发明人 |
ANKER MARTIN;FREDRIKSEN SIW BODIL;BENTZROD PAL CHRISTIAN;BAECKMAN MATS;LEIDEN LEIF;VAHTERI MARKKU;REKONEN PETRI |
分类号 |
F16L9/14;B05D3/10;F16L11/04 |
主分类号 |
F16L9/14 |
代理机构 |
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主权项 |
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地址 |
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