发明名称 |
tubos de aço revestidos com poliolefina. |
摘要 |
Polyolefin of the coating of the steel pipes with high dynamic fracture toughness of the coating of the steel pipes during installation handling and in service, consisting of a steel pipe core, optionally an intermediate foamed plastic material, and a polyolefin coating of beta -nucleated propylene copolymers whereby a test polyolefin pipe fabricated from the beta -nucleated propylene copolymer has a critical pressure of >25 bars and a dynamic fracture toughness >3.5 MNm<-3/2>. The polyolefin coated steel pipes are suitable for off-shore transport of crude oil or gas products or district heating applications. |
申请公布号 |
BR0209871(B1) |
申请公布日期 |
2011.05.31 |
申请号 |
BR20020209871 |
申请日期 |
2002.05.21 |
申请人 |
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发明人 |
CECILIA RYDIN;JAMES MCGOLDRICK;TONY LINDSTROEM;SIEGFRIED LIEDAUER |
分类号 |
C08K5/00;B32B1/08;B32B15/08;B32B27/32;C08F10/06;C08F110/06;C08F210/06;C08F297/08;C08L23/10;C08L23/14;F16L9/12;F16L9/127;F16L9/133;F16L9/147;F16L57/06;F16L58/10 |
主分类号 |
C08K5/00 |
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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