发明名称 |
A pressureless polymer pipe |
摘要 |
<p>A pressureless pipe and polymer composition for making such a pipe as well as the use of the polymer composition for pressureless pipes and supplementary parts, are disclosed. The polymer composition is characterised in that the polymer comprises a multimodal ethylene polymer including a copolymer of ethylene and a C4-C10 alpha -olefin comonomer; the ethylene polymer has a total density of at least 950 kg/m<3> and a MFR5 of 0.2-2.0 g/10 min; the ethylene polymer has a modulus of elasticity, determined according to ISO 178 of more than 1200 MPa; the ethylene polymer has a resistance to slow crack growth, determined according to ASTM F 1473 of more than 1.5 hrs.</p> |
申请公布号 |
EP1584852(A1) |
申请公布日期 |
2005.10.12 |
申请号 |
EP20040008180 |
申请日期 |
2004.04.03 |
申请人 |
BOREALIS TECHNOLOGY OY |
发明人 |
BAECKMAN, MATS;ANDERSSON, MAY-LIS;EK, CARL-GUSTAF;LUND, KENNETH;VAHTERI, MARKKU |
分类号 |
C08F210/16;C08F10/02;C08F110/02;F16L9/00;(IPC1-7):F16L9/12;C08L23/08 |
主分类号 |
C08F210/16 |
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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