Patents by Inventor Edwar Shoukri Shamshoum
Edwar Shoukri Shamshoum has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6653254Abstract: Provided is a catalyst system for polymerization of monomers having at least one Ziegler-Natta polymerizable bond, comprising: a) a supported Ziegler-Natta transition metal catalyst having a magnesium component modified with a metallocene catalyst component, such that the ratio of magnesium component to metallocene component is within the range of about 1:1 to about 4:1, during its synthesis or production; and b) an effective co-catalyst.Type: GrantFiled: February 22, 1999Date of Patent: November 25, 2003Assignee: Fina Technology, INCInventors: Edwar Shoukri Shamshoum, Hong Chen, Margarito Lopez
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Patent number: 6630245Abstract: Provided is polyolefin-based compound, resin, mixture, or combinations thereof, providing products having reduced coefficient of friction, comprising: A) polyolefin other than syndiotactic poly-&agr;-olefin; B) about 0.1% to about 70% syndiotactic poly-&agr;-olefin; and C) about 0.01% to about 5% of: slip agent, anti-block agent, or combinations thereof; as well as process for producing the same.Type: GrantFiled: February 23, 2000Date of Patent: October 7, 2003Assignee: Fina Technology, Inc.Inventors: Likuo Sun, Edwar Shoukri Shamshoum, William R. Wheat, Paul Buras
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Publication number: 20030134965Abstract: Provided is polyolefin-based compound, resin, mixture, or combinations thereof, providing products having reduced coefficient of friction, comprising:Type: ApplicationFiled: February 23, 2000Publication date: July 17, 2003Inventors: Likuo Sun, Edwar Shoukri Shamshoum, William R Wheat, Paul Buras
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Patent number: 6559088Abstract: Provided is a catalyst system for polymerization of monomer having at least one Ziegler-Natta polymerizable bond comprising: c) a supported Ziegler-Natta transition metal catalyst component comprising a Group 15 atom having two groups selected from the group consisting of alkyl and aryl, wherein the support is a magnesium halo dialkylamide; and d) an effective co-catalyst.Type: GrantFiled: February 22, 1999Date of Patent: May 6, 2003Assignee: Fina Technology, Inc.Inventors: Edwar Shoukri Shamshoum, Hong Chen, Margarito Lopez
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Patent number: 6531553Abstract: This invention relates to a conventional supported heterogeneous Ziegler-Natta catalyst for the polymerization of olefins. It has been found that adding a lithium compound to a transition metal catalyst component and then adding an organoaluminum co-catalyst and an organosilicon electron donor produces a catalyst which yields polymer with increased molecular weight. The lithium compound is of the general formula LiCp wherein Cp is a cyclopentadienyl or substituted cyclopentadienyl and is preferably lithium cyclopentadienide or lithium indene. Preferably, the molar ratio of lithium compound/transition metal is at least 0.2.Type: GrantFiled: June 7, 1995Date of Patent: March 11, 2003Assignee: Fina Technology, Inc.Inventors: Edwar Shoukri Shamshoum, Christopher Bauch
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Patent number: 6468936Abstract: The catalyst is a mixture of metallocene catalyst component of the general formula: R″b(CpR4)(CpR′4)MR*v−2 where R″ is a bridge imparting stereorigidity to the structure to the metallocene by connecting the two cyclopentadienyl rings, b is 0 or 1, Cp is a cyclopentadienyl ring, R and R′ are substituents on the cyclopentadienyl rings and can be a hydride or a hydrocarbyl from 1-9 carbon atoms, each R and R′ being the same or different, each (CpR4) and (CpR′4) being the same or different, M is a Group IIIB, IVB, VB or VIB metal, R* is a hydride, a halogen or a hydrocarbyl from 1-20 carbon atoms, v is the valence of M and an aluminoxane co-catalyst in a solvent. The solvent is removed from the mixture of metallocene and aluminoxane to form a solid. The solid mixture is ground and delivered into a reactor in a mineral oil slurry.Type: GrantFiled: April 28, 1993Date of Patent: October 22, 2002Assignee: Fina Technology, Inc.Inventors: Baireddy Raghava Reddy, Edwar Shoukri Shamshoum
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Patent number: 6384160Abstract: A method of polymerizing olefins with a catalyst component which comprises 1) the reaction product of a magnesium alkoxide of the formula M(OR)2, wherein M is magnesium, O is oxygen, R is a hydrocarbyl having from 1 to 20 carbons atoms, and a halogenating agent; 2) an electron donor wherein the electron donor is diethyl phthalate or di-isobutyl phthalate; 3) a titanating agent. The catalyst component is activated with an organoaluminum cocatalyst. An external donor, specifically dicyclopentyl dimethoxysilane or cyclohexylmethyldimethoxy silane, can be added as a stereoselectivity control agent. The activated catalyst is used in the polymerization of olefins, particularly propylene, to obtain a polymer product with a broad molecular weight distribution.Type: GrantFiled: July 15, 1998Date of Patent: May 7, 2002Assignee: Fina Technology, Inc.Inventors: Edwar Shoukri Shamshoum, Christopher Garland Bauch, David John Rauscher
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Patent number: 6323293Abstract: Provided is a process of polymerization wherein the catalyst comprises: A) a catalyst component consisting essentially of titanium, magnesium, halogen, a polycarboxylic ester, and an organic phosphorus compound; B) electron donor described by the formula: wherein R1 is alkyl or cycloakylgroup containing at least one secondary or tertiary carbon atom, R2 and R3 are each independently alkyl or aryl group, and R4 is an alkyl group having a primary carbon bonded to the silicon atom; and C) organic aluminum compound.Type: GrantFiled: February 21, 1997Date of Patent: November 27, 2001Assignee: Fina Technology, Inc.Inventors: Edwar Shoukri Shamshoum, Christopher G. Bauch, Theodore Harris, Sehyun Kim, David John Rauscher
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Patent number: 6255247Abstract: This invention is for a process for the polymerization of propylene to a minimum level of xylene solubles by use of the molar ratio of co-catalyst to external electron donor (selectivity control agent). Using a conventional supported heterogeneous Ziegler-Natta catalyst component with an trialkyl aluminum co-catalyst and an cycloalkylalkyldialkoxysilane external electron nor (selectivity control agent) in a Al/Si molar ratio of about results in the minimum amount of xylene solubles.Type: GrantFiled: July 13, 1999Date of Patent: July 3, 2001Assignee: Fina Technology, Inc.Inventors: Edwar Shoukri Shamshoum, David John Rauscher
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Patent number: 6245857Abstract: Provided is polyolefin composition, the majority of which is highly isotactic polypropylene, comprising the property of heat of melting (&Dgr;Hm) greater than or equal to about 89 J/g.Type: GrantFiled: February 22, 1999Date of Patent: June 12, 2001Assignee: Fina Technology, Inc.Inventors: Edwar Shoukri Shamshoum, Sehyun Kim, Theodore G. Harris, III, Aiko Hanyu
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Patent number: 6107501Abstract: Provided is method of synthesizing stereorigid metallocene having chiral center and enriching its rac isomer content; comprising steps of:a) selecting desired cyclopentadienyl ring-containing compound capable of forming metallocene with chiral center and dissolving compound in suitable solvent;b) contacting mixture of a), under suitable conditions of mixing and temperature for sufficient time to react, with suitable alkyl alkali metal compound;c) dissolving solid created in b) with sufficient suitable solvent;d) contacting solution created in c) with suitable halogenated compound with which bridge between two cyclopentadienyl ring-containing compounds may be formed, under suitable conditions of mixing and temperature for sufficient time to react;e) removing solvent, and, optionally, removing residual starting cyclopentadienyl ring-containing compound;f) dissolving solid created in e) in suitable solvent and contacting with suitable alkyl alkali metal compound under suitable conditions of temperature and mixinType: GrantFiled: January 30, 1997Date of Patent: August 22, 2000Assignee: Fina Technology, Inc.Inventors: Edwar Shoukri Shamshoum, Christopher G. Bauch
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Patent number: 5849655Abstract: A method of forming a polyolefin catalyst component which includes chlorinating magnesium ethoxide, and then treating the product first with an electron donor, particularly diethyl phthalate or di-isobutyl phthalate, at a relatively low donor level, and then second with a titanating agent, such as titanium tetrachloride, to produce a catalyst component. The catalyst component is activated with an aluminum alkyl cocatalyst. An external electron donor, such as an organosilane compound, is added for stereoselectivity control. The activated catalyst is used in the polymerization of olefins, particularly propylene, to obtain a polymer product with a broad molecular weight distribution.Type: GrantFiled: December 20, 1996Date of Patent: December 15, 1998Assignee: Fina Technology, Inc.Inventors: Edwar Shoukri Shamshoum, Christopher Garland Bauch, David John Rauscher
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Patent number: 5847059Abstract: The present invention provides a catalyst and a process for increased catalyst activity and polymer yield. The catalyst system used in the process includes at least two supported metallocene catalyst precursor in combination with an oxyorganoaluminum. The process can be applied to the polymerization of olefins, preferably olefin of three carbon atoms and higher, particularly propylene. The catalyst activity and polymer yield for a dual supported metallocene catalyst are increased over that for a single supported metallocene catalyst. The polymer produced by this dual supported metallocene system has a relatively broad molecular weight distribution.Type: GrantFiled: December 20, 1996Date of Patent: December 8, 1998Assignee: Fina Technology, Inc.Inventors: Edwar Shoukri Shamshoum, Christopher Garland Bauch
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Patent number: 5804524Abstract: The present invention is a catalyst system to produce polymer blends in a single reactor, polymer blends of isotactic polyolefins and syndiotactic polyolefins. The catalyst system is a combination of at least one metallocene catalyst and at least one conventional supported Ziegler-Natta catalyst. The multi-catalyst system is obtained by mixing the components of at least one metallocene catalyst and at least one conventional supported Ziegler-Natta catalyst. The metallocene catalyst comprises solid complx of a metallocene compound and an ionizing agent. The conventional supported Ziegler-Natta catalyst comprises an aluminum alkyl and a transition metal compound with, optionally, an electron donor.Type: GrantFiled: April 28, 1993Date of Patent: September 8, 1998Assignee: Fina Technology, Inc.Inventors: Baireddy Raghava Reddy, Edwar Shoukri Shamshoum
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Patent number: 5648428Abstract: The present invention is a process for producing a polymer blend in a single reactor, specifically a polymer blend of isotactic polyolefins and syndiotactic polyolefins. The catalyst system is a combination of at least one metallocene catalyst and at least one conventional supported Ziegler-Natta catalyst. The multi-catalyst system is obtained by mixing the components of at least one metallocene catalyst and at least one conventional supported Ziegler-Natta catalyst. The metallocene catalyst comprises a metallocene compound and an ionizing agent. The conventional supported Ziegler-Natta catalyst comprises an aluminum alkyl and a transition metal compound with, optionally, an electron donor.Type: GrantFiled: June 7, 1995Date of Patent: July 15, 1997Assignee: Fina Technology, Inc.Inventors: Baireddy Raghava Reddy, Edwar Shoukri Shamshoum
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Patent number: 5643846Abstract: The present invention is a process for producing a catalyst system to produce polymer blends in a single reactor, polymer blends of isotactic polyolefins and syndiotactic polyolefins. The catalyst system is a combination of at least one metallocene catalyst and at least one conventional supported Ziegler-Natta catalyst. The multi-catalyst system is obtained by mixing the components of at least one metallocene catalyst and at least one conventional supported Ziegler-Natta catalyst. The metallocene catalyst comprises a metallocene compound and an ionizing agent. The conventional supported Ziegler-Natta catalyst comprises an aluminum alkyl and a transition metal compound with, optionally, an electron donor.Type: GrantFiled: June 7, 1995Date of Patent: July 1, 1997Assignee: Fina Technology, Inc.Inventors: Baireddy Raghava Reddy, Edwar Shoukri Shamshoum