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1. 发明授权

US06326434B1 Extrusion compositions with improved melt flow 有权
标题翻译：具有改善熔体流动性的挤出组合物
公开(公告)号：US06326434B1
公开(公告)日：2001-12-04
申请号：US09505123
申请日：2000-02-16
申请人： Chun D. Lee , Ramesh N. Shroff , Jeffrey A. Jones
发明人： Chun D. Lee , Ramesh N. Shroff , Jeffrey A. Jones
IPC分类号： C08F850
CPC分类号： H01B3/441 , C08F8/50 , C08F2810/10 , C08L23/04 , C08L23/06 , C08L23/0815 , C08L23/12 , C08L23/16 , C08L2203/202 , C08L2308/00 , C08L2666/04 , C08F110/06 , C08F210/06 , C08F210/02
摘要： Extrusion compositions having improved melt stability and suitable for use in high-speed extrusion coating operations are disclosed. The compositions are a dynamically modified mixture of a first polymeric component which is a reactor-made or physically blended mixture of polypropylene and an ethylene-propylene copolymer, a second polymeric component which is a fractional melt index homopolymer or copolymer of ethylene and an organic peroxide.
摘要翻译：公开了具有改进的熔体稳定性并适用于高速挤出涂布操作的挤出组合物。组合物是第一聚合物组分的动态改性混合物，其是聚丙烯和乙烯 - 丙烯共聚物的反应器制造或物理混合的混合物，第二聚合物组分，其是分子熔体指数均聚物或乙烯和有机过氧化物的共聚物。

2. 发明授权

US5639818A Peroxide modified PP/PE blends with superior melt strength 失效
标题翻译：具有优异熔体强度的过氧化物改性PP / PE共混物
公开(公告)号：US5639818A
公开(公告)日：1997-06-17
申请号：US212630
申请日：1994-03-11
申请人： Chun D. Lee , Ramesh N. Shroff , Manivakkam J. Shankernarayanan
发明人： Chun D. Lee , Ramesh N. Shroff , Manivakkam J. Shankernarayanan
IPC分类号： C08L23/06 , C08L23/08 , C08L23/10 , C08L23/12 , C08L23/04 , C08L33/04
CPC分类号： C08L23/10 , C08L23/12 , C08L2023/42 , C08L23/06 , C08L23/0853 , C08L23/0869 , C08L23/0892
摘要： The instant invention is directed to a process for preparing peroxide modified polypropylene/polyethylene blends that have superior extrusion coating properties. More specifically, the peroxide modified PP/PE blends produced by the instant invention exhibit a pronounced viscosity upturn at low frequencies (about
摘要翻译：本发明涉及一种制备具有优异的挤出涂布性能的过氧化物改性聚丙烯/聚乙烯共混物的方法。更具体地说，本发明生产的过氧化物改性的PP / PE共混物在动态流变学数据中在低频（约<1.0rad / sec）下表现出显着的粘度上升。具体地说，共混物在低于约1.0rad / sec的频率下显示其动态复数粘度ηa和动态储能模量G'值的增加。本发明还涉及由本发明的方法生产的过氧化物改性的PP / PE共混物。与现有技术的混合物相比，由本发明方法制备的这种聚合物共混物表现出优异的动态神学性质，特别是熔体强度。此外，本发明的过氧化物改性的PP / PE共混物显示出显着降低的拉伸共振行为。因此，具有上述特征的本发明的PP / PE共混物将适用于各种各样的应用，例如热成型，吹塑和优选的挤出涂层。

3. 发明授权

US5459201A Impact strength, stress-whitening and bruise-resistance for impact modified polypropylene 失效
标题翻译：抗冲改性聚丙烯的冲击强度，应力增白和抗冲击性
公开(公告)号：US5459201A
公开(公告)日：1995-10-17
申请号：US212754
申请日：1994-03-11
申请人： Ramesh N. Shroff , Chun D. Lee
发明人： Ramesh N. Shroff , Chun D. Lee
IPC分类号： C08J3/22 , C08L23/10 , C08L23/12 , C08L23/16 , C08L23/26
CPC分类号： C08J3/226 , C08L23/10 , C08L23/12 , C08J2323/02 , C08J2421/00 , C08L2023/42 , C08L2023/44 , C08L23/16
摘要： The present invention relates to a process for preparing high melt flow rate thermoplastic compositions that have improved impact and bruise-resistance properties and to the thermoplastic composition that are produced by the process of the instant invention. Specifically, the process comprises the steps of precontacting a non-crosslinked elastomeric polymeric component with a peroxide compound at a temperature below the decomposition temperature of the peroxide and below the melting point of the non-crosslinked polymeric component to produce a peroxide adsorbed polymeric component; and melt mixing the aforementioned peroxide adsorbed polymeric component with a high propylene content polymeric component selected from the group consisting of homopolymers of propylene, block copolymers of propylene and ethylene, and thermoplastic olefin polymers at a temperature above the decomposition temperature of the peroxide.
摘要翻译：本发明涉及一种制备具有改善的冲击和抗腐蚀性能的高熔体流动速率的热塑性组合物的方法以及通过本发明的方法生产的热塑性组合物。具体地说，该方法包括以下步骤：在低于过氧化物的分解温度并低于非交联聚合物组分的熔点的温度下将过渡化合物预先接触过氧化物，以产生过氧化物吸附的聚合物组分; 并且在高于过氧化物分解温度的温度下将上述过氧化物吸附的聚合物组分与选自丙烯的均聚物，丙烯和乙烯的嵌段共聚物以及热塑性烯烃聚合物的高丙烯含量的聚合物组分熔融混合。

4. 发明授权

US06171993B2 Enhanced-impact LLDPE with a shear modifiable network structure 有权
标题翻译：具有可剪切网络结构的增强型LLDPE
公开(公告)号：US06171993B2
公开(公告)日：2001-01-09
申请号：US09205481
申请日：1998-12-04
申请人： Harilaos Mavridis , Mark K. Reinking , Ramesh N. Shroff , Joel A. Mutchler , Charles S. Holland , Keta M. Lindstrom , Kiran M. Gupte , Michael H. Treptau , Francis M. Mirabella
发明人： Harilaos Mavridis , Mark K. Reinking , Ramesh N. Shroff , Joel A. Mutchler , Charles S. Holland , Keta M. Lindstrom , Kiran M. Gupte , Michael H. Treptau , Francis M. Mirabella
IPC分类号： B01J2100
CPC分类号： B01J31/38 , B01J31/0274 , B01J31/122 , B01J37/0018 , C08F210/16 , C08F4/6565 , C08F4/025 , C08F210/08 , C08F2500/12 , C08F2500/21 , C08F2500/26 , C08F210/14
摘要： The present invention provides an ethylene copolymer resin that has unique melt elastic properties not observed in ethylene copolymers heretofore known. Specifically, the ethylene copolymer resin of the present invention when in pelletized form has a reduction in melt elasticity (ER) of 10% or more to a final value of 1.0 or less upon rheometric low shear modification or solution dissolution. Moreover, the resin of the present invention when in reactor-made form exhibits at least a partially reversible increase of 10% or more in ER when pelletizing the same. An ethylene polymerization catalyst, a process of preparing the ethylene copolymer resin and a high-impact film are also provided herein.
摘要翻译：本发明提供一种乙烯共聚物树脂，其在迄今为止已知的乙烯共聚物中没有观察到独特的熔体弹性性能。具体地说，本发明的乙烯共聚物树脂在粒状下，在流变性低剪切改性或溶液溶解时，其熔体弹性（ER）降低10％以上至最终值1.0以下。此外，当以反应器制成形式时，本发明的树脂在造粒时表现出ER的至少部分可逆增加的10％以上。本发明还提供乙烯聚合催化剂，制备乙烯共聚物树脂的方法和高冲击膜。

5. 发明授权

US06713585B1 Enhanced-impact LLDPE with a shear modifiable network structure 有权
标题翻译：具有可剪切网络结构的增强型LLDPE
公开(公告)号：US06713585B1
公开(公告)日：2004-03-30
申请号：US09629280
申请日：2000-07-31
申请人： Harilaos Mavridis , Mark K. Reinking , Ramesh N. Shroff , Joel A. Mutchler , Charles S. Holland , Keta M. Lindstrom , Kiran M. Gupte , Michael H. Treptau , Francis M. Mirabella
发明人： Harilaos Mavridis , Mark K. Reinking , Ramesh N. Shroff , Joel A. Mutchler , Charles S. Holland , Keta M. Lindstrom , Kiran M. Gupte , Michael H. Treptau , Francis M. Mirabella
IPC分类号： C08F11002
CPC分类号： B01J31/38 , B01J31/0274 , B01J31/122 , B01J37/0018 , C08F210/16 , C08F4/6565 , C08F4/025 , C08F210/08 , C08F2500/12 , C08F2500/21 , C08F2500/26 , C08F210/14
摘要： The present invention provides an ethylene copolymer resin that has unique melt elastic properties not observed in ethylene copolymers heretofore known. Specifically, the ethylene copolymer resin of the present invention when in pelletized form has a reduction in melt elasticity (ER) of 10% or more to a final value of 1.0 or less upon rheometric low shear modification or solution dissolution. Moreover, the resin of the present invention when in reactor-made form exhibits at least a partially reversible increase of 10% or more in ER when pelletizing the same. An ethylene polymerization catalyst, a process of preparing the ethylene copolymer resin and a high-impact film are also provided herein.
摘要翻译：本发明提供一种乙烯共聚物树脂，其在迄今为止已知的乙烯共聚物中没有观察到独特的熔体弹性性能。具体地说，本发明的乙烯共聚物树脂在粒状下，在流变性低剪切改性或溶液溶解时，其熔体弹性（ER）降低10％以上至最终值1.0以下。此外，当以反应器制成形式时，本发明的树脂在造粒时表现出ER的至少部分可逆增加的10％以上。本发明还提供乙烯聚合催化剂，制备乙烯共聚物树脂的方法和高冲击膜。

6. 发明授权

US5486575A High performance blow molding resins and process for their preparation 失效
标题翻译：高性能吹塑树脂及其制备方法
公开(公告)号：US5486575A
公开(公告)日：1996-01-23
申请号：US208155
申请日：1994-03-08
申请人： Ramesh N. Shroff
发明人： Ramesh N. Shroff
IPC分类号： C08F8/50 , C08F110/02 , C08F210/02
CPC分类号： B29C47/92 , C08F8/50 , B29C2947/92704 , B29C47/0004 , B29C47/38 , B29C47/805 , C08F2810/10
摘要： A process is provided to improve the properties of polyethylene resins obtained from chromium catalyzed polymerizations and blow molded bottles produced therefrom. The process entails modifying the polyethylene resin by contacting the resin in a molten state with an organic peroxide at a temperature above the decomposition temperature of peroxide. Polyethylene resins utilized for the process have specific densities, melt indexes, long chain branching indexes, unsaturation contents and molecular weight distributions. Blow molded bottles produced from the modified resins have significantly increased top load stress crack resistance and improved swell characteristics.
摘要翻译：提供了一种改进由铬催化聚合获得的聚乙烯树脂和由其制备的吹塑瓶的性能的方法。该方法需要通过在高于过氧化物的分解温度的温度下使熔融状态的树脂与有机过氧化物接触来改性聚乙烯树脂。用于该方法的聚乙烯树脂具有特定的密度，熔体指数，长链支化指数，不饱和含量和分子量分布。由改性树脂生产的吹塑瓶具有显着增加的顶部承载应力抗裂性和改善的膨胀特性。

7. 发明授权

US5486333A Blow molding extrusion die with rectangular slots 失效
标题翻译：具有矩形槽的吹塑挤出模具
公开(公告)号：US5486333A
公开(公告)日：1996-01-23
申请号：US122248
申请日：1993-09-16
申请人： Harilos Mavridis , Ramesh N. Shroff
发明人： Harilos Mavridis , Ramesh N. Shroff
IPC分类号： B29C47/22 , B29C49/00 , B29C49/04 , B29C47/30
CPC分类号： B29C49/0073 , B29C47/0026 , B29C47/22 , B29C49/04
摘要： A die for a blow molding machine has at least one circumferential rectangular cutout section contiguous with the die exit in at least the die ring or the mandrel. The rectangular cutout section expands the material flow channel between the die ring and the mandrel to increase the volume flow of material passing through the die exit at the rectangular cutout section. However, the constant length of the rectangular cutout section in a longitudinal direction maintains a constant linear velocity of material flowing through the die exit.
摘要翻译：用于吹塑机的模具在至少模具环或心轴中具有与模具出口邻接的至少一个圆周矩形切口部分。矩形切口部分使模具环和心轴之间的材料流动通道膨胀，以增加在矩形切口部分通过模具出口的材料的体积流量。然而，矩形切口部分在纵向上的恒定长度保持流过模具出口的材料的恒定线速度。

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