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1.发明授权公开(公告)号：US07238754B1
公开(公告)日：2007-07-03
申请号：US11299438
申请日：2005-12-12
CPC分类号： C08K5/14 , C08F8/00 , C08F2810/10 , C08L23/0815 , C08F210/16 , C08F210/14 , C08F2500/12 , C08F2500/04
摘要： A process for improving the melt characteristics of polyethylene resins is provided. The process involves contacting a polyethylene resin powder with a low level of free radical initiator at a temperature below the melting point of the resin.
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2.发明授权Modifying polyethylene made by Ziegler or single-site catalyst with free radical initiator 失效用Ziegler或单位点催化剂改性自由基引发剂制成的聚乙烯公开(公告)号：US07399809B1
公开(公告)日：2008-07-15
申请号：US11652236
申请日：2007-01-11
申请人： Andrew J. Scheie , Mark K. Reinking
发明人： Andrew J. Scheie , Mark K. Reinking
摘要： A method of modifying a polyethylene is disclosed. In the method ethylene or a mixture of ethylene and a C3-C10 α-olefin is polymerized in an organic solvent with a Ziegler or single-site catalyst to form an initial polyethylene solution. The initial polyethylene solution is then reacted with a free radical initiator to produce a modified polyethylene. The modified polymer has an enhanced melt elasticity and increased long chain branching index, and is essentially free of gel.
摘要翻译： 公开了改性聚乙烯的方法。 在该方法中，乙烯或乙烯和C 3 -C 10α-烯烃的混合物在有机溶剂中与齐格勒或单中心催化剂聚合以形成初始聚乙烯溶液。 然后将初始聚乙烯溶液与自由基引发剂反应以制备改性聚乙烯。 改性聚合物具有增强的熔体弹性和增加的长链支化指数，并且基本上不含凝胶。
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3.发明申请MODIFYING POLYETHYLENE MADE BY ZIEGLER OR SINGLE-SITE CATALYST WITH FREE RADICAL INITIATOR 失效采用ZIEGLER或单壁催化剂制备聚乙烯与自由放射原子公开(公告)号：US20080171842A1
公开(公告)日：2008-07-17
申请号：US11652236
申请日：2007-01-11
申请人： Andrew J. Scheie , Mark K. Reinking
发明人： Andrew J. Scheie , Mark K. Reinking
摘要： A method of modifying a polyethylene is disclosed. In the method ethylene or a mixture of ethylene and a C3-C10 α-olefin is polymerized in an organic solvent with a Ziegler or single-site catalyst to form an initial polyethylene solution. The initial polyethylene solution is then reacted with a free radical initiator to produce a modified polyethylene. The modified polymer has an enhanced melt elasticity and increased long chain branching index, and is essentially free of gel.
摘要翻译： 公开了改性聚乙烯的方法。 在该方法中，乙烯或乙烯和C 3 -C 10α-烯烃的混合物在有机溶剂中与齐格勒或单中心催化剂聚合以形成初始聚乙烯溶液。 然后将初始聚乙烯溶液与自由基引发剂反应以制备改性聚乙烯。 改性聚合物具有增强的熔体弹性和增加的长链支化指数，并且基本上不含凝胶。
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公开(公告)号：US07767767B2
公开(公告)日：2010-08-03
申请号：US11906306
申请日：2007-10-01
IPC分类号： C08F8/06
CPC分类号： C08F8/06 , C08F8/50 , C08F110/02
摘要： A method of modifying polyethylene is disclosed. The method comprises contacting the polyethylene powder with ozone. The modified polyethylene exhibits an increase in melt elasticity and the complex viscosity at low shear rates. The rheological benefits are achieved without a significant reduction in the weight average molecular weight of the polyethylene. The modified polyethylene can be used in applications that require higher melt strength such as film or blow molding.
摘要翻译： 公开了一种改性聚乙烯的方法。 该方法包括使聚乙烯粉末与臭氧接触。 改性聚乙烯在低剪切速率下表现出增加的熔体弹性和复数粘度。 在不显着降低聚乙烯的重均分子量的情况下实现流变学优点。 改性聚乙烯可用于需要较高熔体强度的应用，如薄膜或吹塑。
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公开(公告)号：US07750086B2
公开(公告)日：2010-07-06
申请号：US11362625
申请日：2006-02-27
摘要： A process for improving the melt characteristics of propylene-ethylene random block and impact copolymers is provided. The process involves contacting a powder of the copolymer with a low level of free radical initiator followed by heating at a temperature below the melting point of the copolymer and above the free radical initiation temperature.
摘要翻译： 提供了一种改善丙烯 - 乙烯无规嵌段和抗冲共聚物熔体特性的方法。 该方法包括使共聚物的粉末与低水平的自由基引发剂接触，然后在低于共聚物熔点并高于自由基引发温度的温度下加热。
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公开(公告)号：US20090088534A1
公开(公告)日：2009-04-02
申请号：US11906306
申请日：2007-10-01
CPC分类号： C08F8/06 , C08F8/50 , C08F110/02
摘要： A method of modifying polyethylene is disclosed. The method comprises contacting the polyethylene powder with ozone. The modified polyethylene exhibits an increase in melt elasticity and the complex viscosity at low shear rates. The rheological benefits are achieved without a significant reduction in the weight average molecular weight of the polyethylene. The modified polyethylene can be used in applications that require higher melt strength such as film or blow molding.
摘要翻译： 公开了一种改性聚乙烯的方法。 该方法包括使聚乙烯粉末与臭氧接触。 改性聚乙烯在低剪切速率下表现出增加的熔体弹性和复数粘度。 在不显着降低聚乙烯的重均分子量的情况下实现流变学优点。 改性聚乙烯可用于需要较高熔体强度的应用，如薄膜或吹塑。
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