发明名称 |
Process for coating a pipe with high throughput using multimodal ethylene copolymer, and coated pipes obtained thereof |
摘要 |
Coated pipes have 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, the ratio of the weight average molecular weight to the number average molecular weight, Mw/Mn, of from 15 to 50, 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 930 kg/m3 to 955 kg/m3.
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申请公布号 |
US8361578(B2) |
申请公布日期 |
2013.01.29 |
申请号 |
US20080745804 |
申请日期 |
2008.12.08 |
申请人 |
BOREALIS TECHNOLOGY OY;BACKMAN MATS;ANKER MARTIN;FREDRIKSEN SIW BODIL;LEIDEN LEIF;VAHTERI MARKKU;REKONEN PETRI |
发明人 |
BACKMAN MATS;ANKER MARTIN;FREDRIKSEN SIW BODIL;LEIDEN LEIF;VAHTERI MARKKU;REKONEN PETRI |
分类号 |
B32B1/08;B05D7/00;B32B15/085;F16L9/14 |
主分类号 |
B32B1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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