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公开(公告)号：US10457801B2
公开(公告)日：2019-10-29
申请号：US15537011
申请日：2015-12-28
发明人： Jo Ann M. Canich , Rainer Kolb , Periagaram S. Ravishankar , Phillip T. Matsunaga , Peijun Jiang , Rhutesh K. Shah , Narayanaswami Dharmarajan
IPC分类号： C08F4/6592 , C08F210/16 , C08L23/16 , C08F2/00 , C08F4/76 , C08F210/06 , C08F210/18 , C08F4/659
摘要： Processes are provided which include copolymerization using one or both of a metallocene catalyst capable of producing high molecular weight polymers and a metallocene catalyst capable of producing polymers having 60% or more vinyl terminations. Polymerization processes include dual catalyst polymerization in a single polymerization zone comprising both metallocene catalysts. Other processes include serial or parallel polymerizations in multiple polymerization zones, using either or both catalysts in each polymerization zone. Such polymerization processes produce reactor blends, and are particularly suited for producing copolymer compositions (such as EP or EPDM copolymer compositions) exhibiting improved melt elasticity and rheological properties.
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公开(公告)号：US20160347893A1
公开(公告)日：2016-12-01
申请号：US15234734
申请日：2016-08-11
发明人： Rainer Kolb , Donna J. Crowther , Peijun Jiang
IPC分类号： C08F210/16
CPC分类号： C08F210/16 , C08F4/65908 , C08F4/65927 , C08F10/00 , C08F210/02 , C08F210/06 , C08L23/0807 , C10M143/04 , C10M143/06 , C10M143/08 , C10M171/02 , C10M171/04 , C10M2205/022 , C10N2230/02 , C10N2230/04 , C10N2230/45 , C10N2240/04 , C10N2240/042 , C10N2240/08 , C10N2240/102 , C10N2240/103 , C10N2240/104 , C08L2666/02 , C10M2205/026 , C10M2205/024 , C10M2205/028 , C08F210/14 , C08F2500/03 , C08F2500/12 , C08F210/00
摘要： Provided is an ethylene copolymer having 40 wt. % to 70 wt. % of units derived from ethylene and at least 30 wt. % of units derived from at least one α-olefin having 3 to 20 carbon atoms and has the following properties: (a) a weight-average molecular weight (Mw), as measured by GPC, in the range of about 50,000 to about 200,000 g/mol; (b) a melting point (Tm) in ° C., as measured by DSC, that satisfies the relation: Tm>3.4×E−180 where E is the weight % of units derived from ethylene in the copolymer; (c) a ratio of Mw/Mn of about 1.8 to about 2.5; (d) a content of Group 4 metals of no more than 5 ppm; and (e) a ratio of wt ppm Group 4 metals/wt ppm Group 5 metals of at least 3. Also provided are methods for making an ethylene copolymer and compositions comprising an ethylene copolymer.
摘要翻译： 还提供了制备乙烯共聚物的方法和包含乙烯共聚物的组合物。
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43.发明授权Catalyst system, process for olefin polymerization, and polymer compositions produced therefrom 有权催化剂体系，烯烃聚合方法和由其制备的聚合物组合物公开(公告)号：US08835587B2
公开(公告)日：2014-09-16
申请号：US14049558
申请日：2013-10-09
发明人： Donna J. Crowthers , Peijun Jiang , Rainer Kolb
IPC分类号： C08F210/02 , C08F210/06 , B01J31/22 , B01J31/16 , C08F210/16 , C08F10/06 , B01J31/14 , C08F4/6592 , B01J31/02 , C08F4/659 , C08F110/06
CPC分类号： C08F210/06 , B01J31/0201 , B01J31/0235 , B01J31/0239 , B01J31/0254 , B01J31/0255 , B01J31/146 , B01J31/1608 , B01J31/1616 , B01J31/2295 , B01J2231/122 , B01J2531/0269 , B01J2531/0297 , B01J2531/40 , B01J2531/48 , B01J2531/49 , C08F4/65912 , C08F4/65916 , C08F4/65927 , C08F10/06 , C08F110/06 , C08F210/02 , C08F210/16 , Y10S526/943 , Y10T442/60 , C08F4/65908 , C08F2500/08 , C08F2500/20 , C08F2500/03 , C08F2500/17
摘要： Provided are catalyst systems, processes for polymerizing one or more olefins, polymers resulting therefrom, and articles prepared from such polymers. The processes comprise contacting under polymerization conditions one or more olefin monomers, preferably propylene, with a catalyst system comprising a transition metal compound and an activator of the formula (1) or (2) as described herein. The polymer compositions described herein exhibit advantageously narrow composition distributions and high melting points in comparison to conventional polymers having the same comonomer content. The polymers described herein exhibit improved properties, e.g., pellet stability, impact properties, heat seal properties, and structural integrity in film and fabricated parts applications.
摘要翻译： 提供催化剂体系，聚合一种或多种烯烃的方法，由此产生的聚合物和由这些聚合物制备的制品。 该方法包括在聚合条件下使一种或多种烯烃单体，优选丙烯与包含如本文所述的过渡金属化合物和式（1）或（2）的活化剂的催化剂体系接触。 与具有相同共聚单体含量的常规聚合物相比，本文所述的聚合物组合物显示出有限的组成分布和高熔点。 本文所述的聚合物表现出改进的性能，例如膜和制造零件应用中的颗粒稳定性，冲击性能，热封性能和结构完整性。
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公开(公告)号：US20140194845A1
公开(公告)日：2014-07-10
申请号：US14202869
申请日：2014-03-10
CPC分类号： C08L23/14 , A61L15/26 , C08F4/65908 , C08F4/65927 , C08F210/06 , C08L23/10 , C08L23/142 , C08L2205/025 , C08L2308/00 , D04H3/007 , D04H3/16 , Y10T442/601
摘要： Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more C2 and/or C4-C12 α-olefins. The polymer compositions have a triad tacticity greater than about 90%, a heat of fusion less than about 75 J/g, and a melt flow rate (MFR) greater than or equal to about 25 g/10 min (230° C., 2.16 kg). Further, the polymer compositions are reactor grade compositions comprising a reactor blend of a first polymer and a second polymer, preferably where both of the first and second polymers are prepared using the same catalyst system. Meltspun nonwoven fabrics, such as meltblown or spunbond fabrics, comprising such polymer compositions are also provided, as well as processes for forming the nonwoven fabrics.
摘要翻译： 提供了丙烯类聚合物组合物，其包括丙烯和约5重量％至约20重量％的一种或多种C 2和/或C 4 -C 12α-烯烃。 聚合物组合物的三单元组立构规整度大于约90％，熔融热小于约75J / g，熔体流动速率（MFR）大于或等于约25g / 10min（230℃， 2.16公斤）。 此外，聚合物组合物是包含第一聚合物和第二聚合物的反应器共混物的反应器级组合物，优选地，使用相同的催化剂体系制备第一和第二聚合物。 还提供了包含这种聚合物组合物的熔喷非织造织物，例如熔喷或纺粘织物，以及用于形成无纺织物的方法。
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