- 专利标题： Multimodal polyethylene molding composition for producing pipes having improved mechanical properties
-
申请号： US11990651申请日： 2006-08-17
-
公开(公告)号： US09051458B2公开(公告)日： 2015-06-09
- 发明人: Joachim Berthold , Hansjörg Nitz , Werner Rothhöft , Heinz Vogt
- 申请人： Joachim Berthold , Hansjörg Nitz , Werner Rothhöft , Heinz Vogt
- 申请人地址： DE Wesseling
- 专利权人： Basell Polyolefine GmbH
- 当前专利权人： Basell Polyolefine GmbH
- 当前专利权人地址： DE Wesseling
- 优先权： DE102005040390 20050825
- 国际申请： PCT/EP2006/008101 WO 20060817
- 国际公布： WO2007/022908 WO 20070301
- 主分类号： C08L23/06
- IPC分类号： C08L23/06 ; C08F10/00 ; C08F10/02 ; C08F110/02 ; C08F210/16 ; C08L23/08
摘要：
A polyethylene molding composition having a multimodal molecular mass distribution and comprising from 45 to 55% by weight of a low molecular weight ethylene homopolymer A, from 20 to 40% by weight of a high molecular weight copolymer B comprising ethylene and another olefin having from 4 to 8 carbon atoms and from 15 to 30% by weight of an ultrahigh molecular weight ethylene copolymer C can be prepared in the presence of a Ziegler catalyst in a three-stage process and is highly suitable for producing pipes having excellent mechanical properties.