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1. 发明申请

US20110028665A1 POLYMER 有权
标题翻译：聚合物
公开(公告)号：US20110028665A1
公开(公告)日：2011-02-03
申请号：US12744715
申请日：2008-12-05
申请人： Virginie Eriksson , Markku Vahteri , Marjo Vaananen , Thomas Garoff , Jari Hatonen , Petri Rekonen , Siw Bodil Fredriksen , Katrin Nord-Varhaug , Marit Seim , Jorunn Nilsen , Irene Helland
发明人： Virginie Eriksson , Markku Vahteri , Marjo Vaananen , Thomas Garoff , Jari Hatonen , Petri Rekonen , Siw Bodil Fredriksen , Katrin Nord-Varhaug , Marit Seim , Jorunn Nilsen , Irene Helland
IPC分类号： C08F210/02 , C08F4/00
CPC分类号： C08L23/0815 , C08F210/16 , C08F297/08 , C08F297/083 , C08L53/00 , C08L2205/02 , C08F2/001 , C08L2666/06 , C08L2666/02 , C08F210/08 , C08F210/14 , C08F2500/12 , C08F2500/05 , C08F2500/26 , C08F2500/07
摘要： A multimodal linear low density polyethylene polymer having a final density of 900 to 940 kg/m3, and containing at least one α-olefin comonomer in addition to ethylene comprising: (A) 30 to 60 wt % of a lower molecular weight component being an ethylene homopolymer or a copolymer of ethylene and at least one α-olefin; and (B) 70 to 40 wt % of a higher molecular weight component being a copolymer of ethylene and at least one α-olefin, said α-olefin being the same or different from any α-olefin used in component (A) but with the proviso that both components (A) and (B) are not polymers of ethylene and butane alone; wherein the multimodal LLDPE has a dart drop of at least 700 g; and wherein components (A) and (B) are obtainable using a Ziegler-Natta catalyst.
摘要翻译：一种多峰线型低密度聚乙烯聚合物，其最终密度为900至940kg / m 3，并且除了乙烯之外还含有至少一种α-烯烃共聚单体，其包含：（A）30至60重量％的较低分子量组分，乙烯均聚物或乙烯与至少一种α-烯烃的共聚物; 和（B）70〜40重量％的较高分子量成分是乙烯和至少一种α-烯烃的共聚物，所述α-烯烃与组分（A）中使用的任何α-烯烃相同或不同，但与条件是组分（A）和（B）都不是单独的乙烯和丁烷的聚合物; 其中多峰LLDPE具有至少700g的滴滴; 并且其中组分（A）和（B）可以使用齐格勒 - 纳塔催化剂获得。

2. 发明授权

US08461280B2 Multi-stage process for producing multimodal linear low density polyethylene polymers 有权
标题翻译：用于生产多峰线性低密度聚乙烯聚合物的多阶段方法
公开(公告)号：US08461280B2
公开(公告)日：2013-06-11
申请号：US12744715
申请日：2008-12-05
申请人： Virginie Eriksson , Marjo Vaananen , Markku Vahteri , Thomas Garoff , Petri Rekonen , Jari Hatonen , Siw Bodil Fredriksen , Katrin Nord-Varhaug , Marit Seim , Jorunn Nilsen , Irene Helland
发明人： Virginie Eriksson , Marjo Vaananen , Markku Vahteri , Thomas Garoff , Petri Rekonen , Jari Hatonen , Siw Bodil Fredriksen , Katrin Nord-Varhaug , Marit Seim , Jorunn Nilsen , Irene Helland
IPC分类号： C08F110/02 , C08F110/08 , C08F4/42
CPC分类号： C08L23/0815 , C08F210/16 , C08F297/08 , C08F297/083 , C08L53/00 , C08L2205/02 , C08F2/001 , C08L2666/06 , C08L2666/02 , C08F210/08 , C08F210/14 , C08F2500/12 , C08F2500/05 , C08F2500/26 , C08F2500/07
摘要： A multimodal linear low density polyethylene polymer having a final density of 900 to 940 kg/m3, and containing at least one α-olefin comonomer in addition to ethylene comprising: (A) 30 to 60 wt % of a lower molecular weight component being an ethylene homopolymer or a copolymer of ethylene and at least one α-olefin; and (B) 70 to 40 wt % of a higher molecular weight component being a copolymer of ethylene and at least one α-olefin, said α-olefin being the same or different from any α-olefin used in component (A) but with the proviso that both components (A) and (B) are not polymers of ethylene and butane alone; wherein the multimodal LLDPE has a dart drop of at least 700 g; and wherein components (A) and (B) are obtainable using a Ziegler-Natta catalyst.
摘要翻译：一种多峰线性低密度聚乙烯聚合物，其最终密度为900至940kg / m 3，并且除乙烯之外还含有至少一种α-烯烃共聚单体，其包含：（A）30至60重量％的较低分子量组分为乙烯均聚物或乙烯与至少一种α-烯烃的共聚物; 和（B）70至40重量％的较高分子量组分是乙烯和至少一种α-烯烃的共聚物，所述α-烯烃与组分（A）中使用的任何α-烯烃相同或不同，但与条件是组分（A）和（B）都不是单独的乙烯和丁烷的聚合物; 其中所述多峰LLDPE具有至少700g的滴滴; 并且其中组分（A）和（B）可以使用齐格勒 - 纳塔催化剂获得。

3. 发明授权

US08445599B2 Multi-stage process for producing polyethylene with lowered gel formation 有权
标题翻译：用于生产低凝胶形成的聚乙烯的多阶段方法
公开(公告)号：US08445599B2
公开(公告)日：2013-05-21
申请号：US13129800
申请日：2009-10-16
申请人： Bill Gustafsson , Jari Hatonen , Petri Rekonen , Markku Vahteri , Siw Bodil Fredriksen , Arild Follestad , Karl Isak Skau
发明人： Bill Gustafsson , Jari Hatonen , Petri Rekonen , Markku Vahteri , Siw Bodil Fredriksen , Arild Follestad , Karl Isak Skau
IPC分类号： C08L23/00 , C08F2/00 , C08F4/00 , C08F210/00 , C08F110/02
CPC分类号： C08F10/02 , C08F110/02 , C08F210/16 , C08L23/04 , C08L23/06 , C08L23/0815 , C08L2205/02 , C08L2205/03 , C08F2/34 , C08F2/001 , C08F2/14 , C08L2666/06 , C08L2666/02 , C08F2500/02 , C08F2500/12 , C08F210/14 , C08F2500/01 , C08F2500/07
摘要： The present inventions relates to a process for producing polyethylene compositions comprising polymerizing polyethylene resins in a cascaded multi-stage reaction in which the reaction steps are performed in at least two slurry phase reactors (A) and (B) and at least one gas phase reactor (C) which are arranged in series in any order wherein in reactor (A) a low molecular weight ethylene homo- or copolymer fraction having a MFR2 of 100 to 2000 g/10 min, in reactor (B) a low molecular weight ethylene homo- or copolymer fraction having an MFR2 of 100 to 2000 g/10 min, and in reactor (C) a high molecular weight ethylene copolymer fraction are polymerized, and further comprising a compounding step after polymerization, wherein the final polyethylene composition has a MFR21 of 3 to 50 g/10 min, the melt flow rates being determined according to ISO 1133.
摘要翻译：本发明涉及一种生产聚乙烯组合物的方法，其包括在级联多步反应中聚合聚乙烯树脂，其中反应步骤在至少两个淤浆相反应器（A）和（B）中进行，并且至少一个气相反应器（C），其以任何顺序排列，其中在反应器（A）中具有MFR 2为100至2000g / 10min的低分子量乙烯均聚物或共聚物部分，在反应器（B）中，低分子量乙烯均聚物 - 或MFR2为100〜2000g / 10分钟的共聚物部分，在反应器（C）中聚合高分子量乙烯共聚物部分，进一步包含聚合后的配混步骤，其中最终的聚乙烯组合物的MFR 21为 3至50g / 10min，熔体流动速率根据ISO 1133确定。

4. 发明申请

US20110288237A1 Multi-Stage Process for Producing Polyethylene with Lowered Gel Formation 有权
标题翻译：用于生产具有降低凝胶形成的聚乙烯的多阶段方法
公开(公告)号：US20110288237A1
公开(公告)日：2011-11-24
申请号：US13129800
申请日：2009-10-16
申请人： Bill Gustafsson , Jari Hatonen , Petri Rekonen , Markku Vahteri , Siw Bodil Fredriksen , Arild Follestad , Karl Isak Skau
发明人： Bill Gustafsson , Jari Hatonen , Petri Rekonen , Markku Vahteri , Siw Bodil Fredriksen , Arild Follestad , Karl Isak Skau
IPC分类号： C08L23/08 , C08L23/20
CPC分类号： C08F10/02 , C08F110/02 , C08F210/16 , C08L23/04 , C08L23/06 , C08L23/0815 , C08L2205/02 , C08L2205/03 , C08F2/34 , C08F2/001 , C08F2/14 , C08L2666/06 , C08L2666/02 , C08F2500/02 , C08F2500/12 , C08F210/14 , C08F2500/01 , C08F2500/07
摘要： The present inventions relates to a process for producing polyethylene compositions comprising polymerising polyethylene resins in a cascaded multi-stage reaction in which the reaction steps are performed in at least two slurry phase reactors (A) and (B) and at least one gas phase reactor (C) which are arranged in series in any order wherein in reactor (A) a low molecular weight ethylene homo- or copolymer fraction having a MFR2 of 100 to 2000 g/10 min, in reactor (B) a low molecular weight ethylene homo- or copolymer fraction having an MFR2 of 100 to 2000 g/10 min, and in reactor (C) a high molecular weight ethylene copolymer fraction are polymerised, and further comprising a compounding step after polymerisation, wherein the final polyethylene composition has a MFR21 of 3 to 50 g/10 min, the melt flow rates being determined according to ISO 1133, a multimodal polymer composition comprising a polyethylene resin comprising (i) a first low molecular weight ethylene homo- or copolymer fraction having a MFR2 of 100 to 2000 g/10 min, (ii) a second low molecular weight ethylene homo- or copolymer fraction having a MFR2 of 100 to 2000 g/10 min, and (iii) a high molecular weight ethylene copolymer fraction, wherein the polyethylene resin has a MFR21 of 3 to 50 g/10 min and white spots are dispersed within the final composition with a white spot dispersion of less than 4.5 after a single compounding step, the melt flow rates being determined according to ISO 1133 and the white spot test according to ISO 18553, and the use of at least two slurry phase reactors for the polymerisation of a low molecular weight polyethylene fraction for improving the homogeneity of a multimodal polyethylene resin.
摘要翻译：本发明涉及一种生产聚乙烯组合物的方法，其包括在级联多步反应中聚合聚乙烯树脂，其中反应步骤在至少两个淤浆相反应器（A）和（B）中进行，并且至少一个气相反应器（C），其以任何顺序排列，其中在反应器（A）中具有MFR 2为100至2000g / 10min的低分子量乙烯均聚物或共聚物部分，在反应器（B）中，低分子量乙烯均聚物 - 或MFR2为100〜2000g / 10分钟的共聚物部分，在反应器（C）中聚合高分子量乙烯共聚物部分，进一步包括聚合后的配混步骤，其中最终的聚乙烯组合物的MFR 21为 3至50g / 10min，熔体流动速率根据ISO 1133确定，多元聚合物组合物包含聚乙烯树脂，其包含（i）第一低分子量乙烯均聚物或共聚物fr MFR 2为100〜2000g / 10分钟的动作，（ii）MFR 2为100〜2000g / 10分钟的第二低分子量乙烯均聚物或共聚物部分，（iii）高分子量乙烯共聚物部分其中聚乙烯树脂的MFR 21为3〜50g / 10min，白色斑点分散在最终组合物中，在单一配混步骤后，白点分散度小于4.5，熔体流动速率根据ISO 1133 和根据ISO 18553的白点试验，以及使用至少两个浆料相反应器来聚合低分子量聚乙烯级分以改善多峰聚乙烯树脂的均匀性。

5. 发明申请

US20100279047A1 Coated Pipes Having Improved Mechanical Properties at Elevated Temperatures and a Method of Production Thereof 有权
标题翻译：涂层管在高温下具有改善的机械性能及其生产方法
公开(公告)号：US20100279047A1
公开(公告)日：2010-11-04
申请号：US12809573
申请日：2008-12-10
申请人： Martin Anker , Siw Bodil Fredriksen , Pal Christian Bentzrod , Mats Bäckman , Leif Leiden , Markku Vahteri , Petri Rekonen
发明人： Martin Anker , Siw Bodil Fredriksen , Pal Christian Bentzrod , Mats Bäckman , Leif Leiden , Markku Vahteri , Petri Rekonen
IPC分类号： F16L9/14 , B05D3/10 , F16L11/04
CPC分类号： C09D123/06 , C08L23/06 , C08L23/0815 , C08L2205/025 , C08L2308/00 , C09D123/0815 , Y10T428/1393 , Y10T428/1397 , C08L2666/06
摘要： The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol and a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 945 kg/m3 to 958 kg/m3. The coatings have a high stiffness, good properties at elevated temperatures and acceptable stress-cracking properties.
摘要翻译：本发明涉及具有多峰聚乙烯层的涂覆管。多峰乙烯共聚物是乙烯与一种或多种具有4-10个碳原子的α-烯烃共聚单体的共聚物，其重均分子量为70000g / mol至250000g / mol，熔体指数MFR2为0.05 g / 10分钟至5g / 10min，熔体指数MFR5为0.5至10g / 10min，密度为945kg / m 3至958kg / m 3。涂层具有高刚度，在高温下具有良好的性能和可接受的应力开裂性能。

6. 发明授权

US08361578B2 Process for coating a pipe with high throughput using multimodal ethylene copolymer, and coated pipes obtained thereof 有权
标题翻译：使用多峰乙烯共聚物涂布高通量的管道的方法及其获得的涂覆管道
公开(公告)号：US08361578B2
公开(公告)日：2013-01-29
申请号：US12745804
申请日：2008-12-08
申请人： Mats Backman , Martin Anker , Siw Bodil Fredriksen , Leif Leiden , Markku Vahteri , Petri Rekonen
发明人： Mats Backman , Martin Anker , Siw Bodil Fredriksen , Leif Leiden , Markku Vahteri , Petri Rekonen
IPC分类号： B32B1/08 , B32B15/085 , F16L9/14 , B05D7/00
CPC分类号： C08L23/06 , C08L23/0815 , C08L2205/025 , C08L2308/00 , Y10T428/1352 , Y10T428/1355 , Y10T428/1359 , Y10T428/1393 , C08L2666/06
摘要： Coated pipes have a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol, the ratio of the weight average molecular weight to the number average molecular weight, Mw/Mn, of from 15 to 50, a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 930 kg/m3 to 955 kg/m3.
摘要翻译：涂层管道有一层多峰聚乙烯。多峰乙烯共聚物是乙烯与一种或多种具有4-10个碳原子的α-烯烃共聚单体的共聚物，其重均分子量为70000g / mol至250000g / mol，重均分子量数均分子量Mw / Mn为15-50，熔体指数MFR2为0.05g / 10min至5g / 10min，熔体指数MFR5为0.5-10g / 10min，密度为930 kg / m3至955 kg / m3。

7. 发明申请

US20110120587A1 PROCESS FOR COATING A PIPE WITH HIGH THROUGHPUT USING MULTIMODAL ETHYLENE COPOLYMER, AND COATED PIPES OBTAINED THEREOF 有权
标题翻译：使用多模乙烯共聚物涂覆高通量管的方法及其所得到的涂层管
公开(公告)号：US20110120587A1
公开(公告)日：2011-05-26
申请号：US12808357
申请日：2008-12-09
申请人： Martin Anker , Siw Bodil Fredriksen , Pal Christian Bentzrod , Mats Backman , Leif Leiden , Markku Vahteri , Petri Rekonen
发明人： Martin Anker , Siw Bodil Fredriksen , Pal Christian Bentzrod , Mats Backman , Leif Leiden , Markku Vahteri , Petri Rekonen
IPC分类号： F16L9/14 , B05D3/02
CPC分类号： C09D123/06 , C08L23/0815 , C08L2205/025 , C08L2308/00 , C08L2666/06
摘要： The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol, the ratio of the weight average molecular weight to the number average molecular weight, Mw/Mn, of from 15 to 50, a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 930 kg/m to 955 kg/m3. Further, the multimodal ethylene copolymer comprises the multimodal ethylene copolymer comprises from 49 to 59% based on the weight of the multimodal ethylene copolymer a low molecular weight ethylene homopolymer component, said low molecular weight ethylene homopolymer having a weight average molecular weight of from 5000 g/mol to 70000 g/mol; and from 51 to 41% based on the weight of the multimodal ethylene copolymer a high molecular weight ethylene copolymer component, said high molecular weight ethylene copolymer having a weight average molecular weight of from 100000 g/mol to 700000 g/mol. The pipes can be coated with high throughput and good production economy. The coatings have good mechanical properties.
摘要翻译：本发明涉及具有多峰聚乙烯层的涂覆管。多峰乙烯共聚物是乙烯与一种或多种具有4-10个碳原子的α-烯烃共聚单体的共聚物，其重均分子量为70000g / mol至250000g / mol，重均分子量数均分子量Mw / Mn为15-50，熔体指数MFR2为0.05g / 10min至5g / 10min，熔体指数MFR5为0.5-10g / 10min，密度为930kg / m至955kg / m 3。此外，多峰乙烯共聚物包含多峰乙烯共聚物，其包含基于多峰乙烯共聚物的重量的49-59％的低分子量乙烯均聚物组分，所述低分子量乙烯均聚物的重均分子量为5000g / mol至70000g / mol; 和基于多峰乙烯共聚物重量的51至41％的高分子量乙烯共聚物组分，所述高分子量乙烯共聚物的重均分子量为100000g / mol至700000g / mol。管道可以高产量和良好的生产经济性涂层。涂层具有良好的机械性能。

8. 发明申请

US20100313986A1 PROCESS FOR COATING A PIPE WITH HIGH THROUGHPUT USING MULTIMODAL ETHYLENE COPOLYMER, AND COATED PIPES OBTAINED THEREOF 有权
标题翻译：使用多模乙烯共聚物涂覆高通量管的方法及其所得到的涂层管
公开(公告)号：US20100313986A1
公开(公告)日：2010-12-16
申请号：US12745804
申请日：2008-12-08
申请人： Mats Backman , Martin Anker , Siw Bodil Fredriksen , Leif Leiden , Markku Vahteri , Petri Rekonen
发明人： Mats Backman , Martin Anker , Siw Bodil Fredriksen , Leif Leiden , Markku Vahteri , Petri Rekonen
IPC分类号： F16L9/14 , B05D3/10 , B05D1/36 , B05D1/00 , C09D123/06 , C08L23/08 , C08L23/06
CPC分类号： C08L23/06 , C08L23/0815 , C08L2205/025 , C08L2308/00 , Y10T428/1352 , Y10T428/1355 , Y10T428/1359 , Y10T428/1393 , C08L2666/06
摘要： The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol, the ratio of the weight average molecular weight to the number average molecular weight, Mw/Mn, of from 15 to 50, a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 930 kg/m3 to 955 kg/m3. The pipes can be coated with high throughput and good production economy. The coatings have good mechanical properties.
摘要翻译：本发明涉及具有多峰聚乙烯层的涂覆管。多峰乙烯共聚物是乙烯与一种或多种具有4-10个碳原子的α-烯烃共聚单体的共聚物，其重均分子量为70000g / mol至250000g / mol，重均分子量数均分子量Mw / Mn为15-50，熔体指数MFR2为0.05g / 10min至5g / 10min，熔体指数MFR5为0.5-10g / 10min，密度为930 kg / m3至955 kg / m3。管道可以高产量和良好的生产经济性涂层。涂层具有良好的机械性能。

9. 发明授权

US08623482B2 Coated pipe with high throughput using multimodal ethylene copolymer 有权
标题翻译：使用多峰乙烯共聚物的高通量的涂层管
公开(公告)号：US08623482B2
公开(公告)日：2014-01-07
申请号：US12808357
申请日：2008-12-09
申请人： Martin Anker , Siw Bodil Fredriksen , Pal Christian Bentzrod , Mats Backman , Leif Leiden , Markku Vahteri , Petri Rekonen
发明人： Martin Anker , Siw Bodil Fredriksen , Pal Christian Bentzrod , Mats Backman , Leif Leiden , Markku Vahteri , Petri Rekonen
IPC分类号： B32B1/08 , B32B15/085 , F16L9/14 , B05D7/00
CPC分类号： C09D123/06 , C08L23/0815 , C08L2205/025 , C08L2308/00 , C08L2666/06
摘要： The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol, the ratio of the weight average molecular weight to the number average molecular weight, Mw/Mn, of from 15 to 50, a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 930 kg/m to 955 kg/m3. Further, the multimodal ethylene copolymer comprises the multimodal ethylene copolymer comprises from 49 to 59% based on the weight of the multimodal ethylene copolymer a low molecular weight ethylene homopolymer component, said low molecular weight ethylene homopolymer having a weight average molecular weight of from 5000 g/mol to 70000 g/mol; and from 51 to 41% based on the weight of the multimodal ethylene copolymer a high molecular weight ethylene copolymer component, said high molecular weight ethylene copolymer having a weight average molecular weight of from 100000 g/mol to 700000 g/mol. The pipes can be coated with high throughput and good production economy. The coatings have good mechanical properties.
摘要翻译：本发明涉及具有多峰聚乙烯层的涂覆管。多峰乙烯共聚物是乙烯与一种或多种具有4-10个碳原子的α-烯烃共聚单体的共聚物，其重均分子量为70000g / mol至250000g / mol，重均分子量数均分子量Mw / Mn为15-50，熔体指数MFR2为0.05g / 10min至5g / 10min，熔体指数MFR5为0.5-10g / 10min，密度为930kg / m至955kg / m 3。此外，多峰乙烯共聚物包含多峰乙烯共聚物，其包含基于多峰乙烯共聚物的重量的49-59％的低分子量乙烯均聚物组分，所述低分子量乙烯均聚物的重均分子量为5000g / mol至70000g / mol; 和基于多峰乙烯共聚物重量的51至41％的高分子量乙烯共聚物组分，所述高分子量乙烯共聚物的重均分子量为100000g / mol至700000g / mol。管道可以高产量和良好的生产经济性涂层。涂层具有良好的机械性能。

10. 发明授权

US08142871B2 Coated pipes having improved mechanical properties at elevated temperatures and a method of production thereof 有权
标题翻译：在高温下具有改善的机械性能的涂布管及其制造方法
公开(公告)号：US08142871B2
公开(公告)日：2012-03-27
申请号：US12809573
申请日：2008-12-10
申请人： Martin Anker , Siw Bodil Fredriksen , Pal Christian Bentzrod , Mats Bäckman , Leif Leiden , Markku Vahteri , Petri Rekonen
发明人： Martin Anker , Siw Bodil Fredriksen , Pal Christian Bentzrod , Mats Bäckman , Leif Leiden , Markku Vahteri , Petri Rekonen
IPC分类号： B29D22/00
CPC分类号： C09D123/06 , C08L23/06 , C08L23/0815 , C08L2205/025 , C08L2308/00 , C09D123/0815 , Y10T428/1393 , Y10T428/1397 , C08L2666/06
摘要： The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol and a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 945 kg/m3 to 958 kg/m3. The coatings have a high stiffness, good properties at elevated temperatures and acceptable stress-cracking properties.
摘要翻译：本发明涉及具有多峰聚乙烯层的涂覆管。多峰乙烯共聚物是乙烯与一种或多种具有4-10个碳原子的α-烯烃共聚单体的共聚物，其重均分子量为70000g / mol至250000g / mol，熔体指数MFR2为0.05 g / 10分钟至5g / 10min，熔体指数MFR5为0.5至10g / 10min，密度为945kg / m 3至958kg / m 3。涂层具有高刚度，在高温下具有良好的性能和可接受的应力开裂性能。

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