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公开(公告)号:US20090252910A1
公开(公告)日:2009-10-08
申请号:US11718018
申请日:2005-11-02
CPC分类号: C08L23/04 , C08F210/16 , C08L23/06 , C08L23/0815 , C08L2205/02 , C08L2205/025 , Y10T428/1397 , C08F2/001 , C08L2666/06 , C08F210/08 , C08F2500/12 , C08F2500/07 , C08F2500/17
摘要: The present invention concerns a multimodal polyethylene composition comprising a base resin comprising three ethylene homo- or copolymer fractions (A), (B) and (C) with different weight average molecular weight Mw, wherein a) fraction (A) has an MFR21 equal or lower than 20 g/10 min, b) fraction (B) has a lower weight average molecular weight than fraction (C), c) fraction (C) has a lower weight average molecular weight than fraction (A), d) the composition has a viscosity at a shear stress of 747 Pa (eta747) of 350 kPas or higher, and e) the composition has a MFR5 of 0.15 g/10 min or higher and a white spot area of 1% or below. Furthermore, the present invention relates to a process for the production of such a composition as well as to the use of such a composition for the production of a pipe, for moulding applications, and wire and cable applications.
摘要翻译: 本发明涉及一种多峰聚乙烯组合物,其包含基本树脂,其包含三种具有不同重均分子量Mw的乙烯均聚物或共聚物部分(A),(B)和(C),其中a)部分(A)的MFR 21等于 或低于20g / 10分钟,b)级分(B)的重均分子量低于级分(C),c)级分(C)的重均分子量低于级分(A),d) 组合物在747Pa(eta747)的剪切应力下的粘度为350kPa·s以上,e)组合物的MFR 5为0.15g / 10分钟以上,白点面积为1%以下。 此外,本发明涉及一种生产这种组合物的方法,以及这种组合物用于生产管道,成型应用和电线电缆应用的用途。
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公开(公告)号:US20090198018A1
公开(公告)日:2009-08-06
申请号:US11718015
申请日:2005-11-02
IPC分类号: C08L23/04
CPC分类号: C08L23/04 , C08F210/16 , C08L23/06 , C08L23/0815 , C08L2205/02 , C08L2205/025 , C08L2666/06 , C08F2/001 , C08F4/6492 , C08F210/08 , C08F2500/12 , C08F2500/17 , C08F2500/04 , C08F210/14
摘要: The present invention in a first embodiment concerns a multimodal, preferably bimodal, polyethylene composition comprising a base resin which comprises (A) a first ethylene homo- or copolymer fraction, and (B) a second ethylene homo- or copolymer fraction, wherein fraction (A) has a lower molecular weight than fraction (B), the ratio of the MFR2 of fraction (A) and the MFR5 of the base resin being from 200 to 1500, and the composition has a white spot area of 1% or below. In a second embodiment, the present invention concerns a polyethylene composition comprising a base resin comprising (A) a first ethylene homo- or copolymer fraction, and (B) a second ethylene homo- or copolymer fraction, wherein fraction (A) has a lower molecular weight than fraction (B), the ratio of the MFR2 of fraction (A) and the MFR5 of the base resin being from 200 to 1500, and the composition has a rating in the ISO 18553 white spot rating test of below 4.5. Furthermore, the present invention relates to a process for the production of said compositions as well as to the use said compositions for the production of an article, in particular a pipe.
摘要翻译: 第一实施方案中的本发明涉及包含(A)第一乙烯均聚物或共聚物部分和(B)第二乙烯均聚物或共聚物部分的基础树脂的多峰,优选双峰聚乙烯组合物,其中级分( A)具有比分数(B)低的分子量,分数(A)的MFR 2与基础树脂的MFR 5的比例为200〜1500,该组合物的白点面积为1%以下。 在第二个实施方案中,本发明涉及包含基础树脂的聚乙烯组合物,其包含(A)第一乙烯均聚物或共聚物部分,和(B)第二乙烯均聚物或共聚物部分,其中级分(A)具有较低的 分子量比分数(B),分数(A)的MFR 2与基础树脂的MFR 5的比例为200〜1500,组成在ISO 18553白点评级试验中的评级低于4.5。 此外,本发明涉及用于生产所述组合物的方法以及用于生产制品,特别是管的所述组合物。
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公开(公告)号:US07511099B2
公开(公告)日:2009-03-31
申请号:US10594359
申请日:2004-03-26
申请人: Mats Bäckman , Eric Van Praet , Remco Van Marion
发明人: Mats Bäckman , Eric Van Praet , Remco Van Marion
IPC分类号: C08L23/04
CPC分类号: C08L23/04 , C08L23/08 , C08L2666/06
摘要: The invention relates to novel multimodal polyethylene polymers comprising a low molecular weight fraction and a high molecular weight fraction, and having a MFR5 of greater than 0.10 g/10 min and less than or equal to 0.22 g/10 min, and a density of greater than equal to 952 kg/m3. The invention also relates to uses of the novel polymers in the production of polymeric articles, especially pipes.
摘要翻译: 本发明涉及包含低分子量级分和高分子量级分并且具有大于0.10g / 10min且小于或等于0.22g / 10min的MFR 5和更大密度的新型多峰聚乙烯聚合物 等于952 kg / m3。 本发明还涉及新型聚合物在聚合物制品,特别是管道的生产中的用途。
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