发明名称 |
Singlelayer and multilayer polyolefin foam pipes |
摘要 |
Single layer and multilayer polyolefin foam pipes with improved compression resistance have a polyolefin foam layer which consists of mixtures of modified propylene polymers having strain hardening behaviour or propylene homopolymers with a stereospecifity index >98% or propylene copolymers with a stereospecifity index of the homopolymer matrix of >96%. The polyolefin foam pipes are coated steel pipes for transporting crude oil or gas products or district heating applications, single layer pipes for insulation purposes and for non- or low-pressure applications and multilayer plastic pipes for the transportation of hot or cold fluids.
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申请公布号 |
US6986922(B2) |
申请公布日期 |
2006.01.17 |
申请号 |
US20030333511 |
申请日期 |
2003.03.17 |
申请人 |
BOREALIS GMBH |
发明人 |
HESSE ACHIM;LINDSTROEM TONY;EK CARL-GUSTAF;RYDIN CECILIA |
分类号 |
B32B1/08;B32B5/18;B32B15/08;B32B27/32;C08L23/12;C08L23/14;C08L51/06;C08L53/00;F16L9/12;F16L9/14;F16L59/02;F16L59/14 |
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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