Patents by Inventor Frederick John Karol
Frederick John Karol 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: 6562750Abstract: A catalyst composition for the polymerization of olefins is provided, comprising a bis(hydroxy aromatic nitrogen ligand) transition metal catalyst precursor and an activating cocatalyst.Type: GrantFiled: January 9, 2002Date of Patent: May 13, 2003Assignee: Univation TechnologiesInventors: Walter Thomas Reichle, Frederick John Karol
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Publication number: 20020077477Abstract: A catalyst composition for the polymerization of olefins is provided, comprising a bis(hydroxy aromatic nitrogen ligand) transition metal catalyst precursor and an activating cocatalyst.Type: ApplicationFiled: January 9, 2002Publication date: June 20, 2002Inventors: Walter Thomas Reichle, Frederick John Karol
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Patent number: 6380390Abstract: A catalyst composition for the polymerization of olefins is provided, comprising a bis(hydroxy aromatic nitrogen ligand) transition metal catalyst precursor and an activating cocatalyst.Type: GrantFiled: January 13, 2000Date of Patent: April 30, 2002Assignee: Univation Technologies, LLCInventors: Walter Thomas Reichle, Frederick John Karol
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Patent number: 6281320Abstract: This invention comprises a metallocene catalyst system for the production of high molecular weight polyolefins, particularly polyethylene and higher poly-alpha olefins, and copolymers of ethylene and/or alpha olefins with other unsaturated monomers, including diolefins, acetylenically unsaturated monomers and cyclic olefins. The catalyst system is highly active, at low ratios of Al to transition metal, and hence catalyzes the production of a polyolefin product containing low levels of catalyst metal residues. The catalyst system comprises (i) a metallocene precursor (Component A), aluminoxane (Component B), and phenolic modifier (Component C) or (ii) the reaction product of a metallocene precursor with a phenolic compound (Component A′) and aluminoxane (Component B). There is also provide a polymerization process using the catalyst and the product so produced.Type: GrantFiled: February 4, 1999Date of Patent: August 28, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Sun-Chueh Kao, Frederick John Karol
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Patent number: 6232256Abstract: A catalyst composition is provided, which is prepared by contacting a cycloalkadienyl compound, a transition metal amide of the formula M(NMe2)mXn, an aluminoxane, and optionally a solid support at a temperature of 0 to 100° C.Type: GrantFiled: November 5, 1999Date of Patent: May 15, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Xinmin Yang, Walter Thomas Reichle, Frederick John Karol
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Patent number: 6177527Abstract: A process for the preparation of (i) polyethylene or (ii) polypropylene, which is essentially isotactic or a mixture of atactic and isotactic polypropylenes comprising contacting ethylene or propylene per se, or in admixture with one or more alpha-olefins, under polymerization conditions, with a catalyst system comprising: (a) a precatalyst comprising a mixture of racemic and meso stereoisomers of a metallocene catalyst containing two cycloalkadienyl ligands joined by a bridging linkage, said ligands complexed to a metal atom; and (b) (1) to obtain polyethylene catalyzed by the rac epimer only, a cocatalyst selected from the group consisting of tris(perfluorophenyl)borane and isobutyl alumoxane; (2) to obtain polyethylene catalyzed by both the rac and the meso epimers, a cocatalyst selected from the group consisting of dimethylanilinium tetrakis(perfluorophenyl)borate and triphenylmethyl tetrakis(perfluorophenyl)borate; (3) to obtain polypropylene, which is essentially isotactic, a cocatalystType: GrantFiled: September 8, 1998Date of Patent: January 23, 2001Assignee: Union Carbide Chemical & Plastics Technology CorporationInventors: Purna Chand Sishta, Xinmin Yang, Frederick John Karol
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Patent number: 6159617Abstract: Ethylene polymers having a) a Polydispersity Index of about 2 to about 4; b) a melt index, MI, and Relaxation Spectrum Index, RSI, such that (RSI)(MI.sup.0.6) is about 2.5 to about 6.5; c) a Crystallizable Chain Length Distribution Index, L.sub.w /L.sub.n, of about 1.0 to about 9; and d) a density, .rho., and a percent haze when fabricated into films such that the percent haze is less than 370.rho.-330, are provided. These ethylene polymers advantageously combine superior clarity and toughness with low extractables and enhanced processing ease.Type: GrantFiled: April 2, 1998Date of Patent: December 12, 2000Assignee: Univation Technologies, LLCInventors: George Norris Foster, Tong Chen, Robert Harold Vogel, Scott Hanley Wasserman, Day-Chyuan Lee, Walter Thomas Reichle, Frederick John Karol, Gregory Todd Whiteker
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Patent number: 6136747Abstract: A mixed catalyst composition comprising a) a solid Ziegler-Natta catalyst; b) a liquid single site catalyst; and c) at least one activating cocatalyst is provided. Polymers having a broad or bimodal molecular weight distribution may be made with this catalyst composition.Type: GrantFiled: June 19, 1998Date of Patent: October 24, 2000Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Sun-Chueh Kao, Frederick John Karol, Paul Theodore Daniell, Gregory Mark Goode
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Patent number: 6093824Abstract: A catalyst composition for the polymerization of olefins is provided, comprising a bis(hydroxy aromatic nitrogen ligand) transition metal catalyst precursor and an activating cocatalyst.Type: GrantFiled: February 25, 1998Date of Patent: July 25, 2000Assignee: Univation Technologies, LLCInventors: Walter Thomas Reichle, Frederick John Karol
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Patent number: 6069213Abstract: It has been found that the use of at least one unsupported metallocene polymerization catalyst with at least one supported metallocene polymerization catalyst in the polymerization of olefins allows for better control of the polymerization, especially gas phase polymerization. Such a system takes advantage of the high activity of the unsupported catalyst and the stability of a supported catalyst. Additionally, the relative timing of the addition of the supported and unsupported catalysts to a reaction system can be used to control a continuous polymerization reaction by stabilizing the reactor bed with the supported catalyst prior to addition of the unsupported catalyst.Type: GrantFiled: December 16, 1997Date of Patent: May 30, 2000Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Thomas Lloyd Nemzek, Frederick John Karol, Sun-Chueh Kao, Robert Converse Brady, III
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Patent number: 6069109Abstract: A process for the production of a catalyst precursor comprising reacting (a) a metallocene dihalide; (b) a compound of the formula: ##STR1## wherein each Q is the same or different and is independently selected from the group consisting of O, NR, CR.sub.2, and S; E is either C or S; Z is selected from the group consisting of --OR, --NR.sub.2, --CR.sub.3, --SR, --SiR.sub.3, --PR.sub.2, --H, and a substituted or unsubstituted aryl group; and each R is independently a group containing carbon, silicon, nitrogen, oxygen, and/or phosphorus; and (c) a trialkylamine.Type: GrantFiled: July 1, 1998Date of Patent: May 30, 2000Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Sun-Chueh Kao, Frederick John Karol
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Patent number: 6066703Abstract: A process for the polymerization of an olefin which employs as the catalyst composition the reaction product of a) a monocycloalkadienyl catalyst precursor; b) an activity enhancing cycloalkadiene; and c) an activating cocatalyst is disclosed.Type: GrantFiled: November 25, 1997Date of Patent: May 23, 2000Assignee: Univation Technologies LLC.Inventors: Walter Thomas Reichle, Xinmin Yang, Frederick John Karol
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Patent number: 6028151Abstract: A process for producing an olefin polymer, which comprises contacting at least two olefin monomers under polymerization conditions with a catalyst composition comprising A) an aluminoxane-impregnated support prepared by contacting an aluminoxane with an inert carrier material and heating to a temperature of at least about 80.degree. C.; B) a metallocene of the formula:(L).sub.y (L')MY.sub.(x-y-1)wherein M is a metal from groups IIIB to VIII of the Periodic Table; each L and L' is independently a cycloalkadienyl group bonded to M; each Y is independently hydrogen, an aryl, alkyl, alkenyl, alkylaryl, or arylalkyl radical having 1-20 carbon atoms, a hydrocarboxy radical having from 1-20 carbon atoms, a halogen, RCO.sub.2 --, or R.sub.2 N--, wherein R is a hydrocarbyl group containing 1 to about 20 carbon atoms; y is 0, 1, or 2; x is 1, 2, 3, or 4; and x-y.gtoreq.1; C) a bulky aluminum alkyl of the formula:AlR.sup.1.sub.x R.sup.2.sub.(3-x)wherein R.sup.Type: GrantFiled: February 25, 1998Date of Patent: February 22, 2000Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Eric Paul Wasserman, Sun Chueh Kao, Frederick John Karol
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Patent number: 5852146Abstract: A catalyst composition for the polymerization of olefins is provided, comprising a bis(hydroxy aromatic nitrogen ligand) transition metal catalyst precursor and an activating cocatalyst.Type: GrantFiled: June 27, 1996Date of Patent: December 22, 1998Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Walter Thomas Reichle, Frederick John Karol
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Patent number: 5852143Abstract: Polyethylene having a broad molecular weight distribution, a narrow comonomer distribution and excellent processability is easily and cost effectively made using stereoisomeric mixtures of bridged metallocene catalysts containing cycloalkadienyl ligands with facial chirality.Type: GrantFiled: April 16, 1997Date of Patent: December 22, 1998Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Purna Chand Sishta, Eric Paul Wasserman, Frederick John Karol
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Patent number: 5756416Abstract: A catalyst composition comprising A) an aluminoxane-impregnated support prepared by contacting an aluminoxane with an inert carrier material and heating to a temperature of at least about 80.degree. C.; B) a metallocene of the formula:(L).sub.y (L')MY.sub.(x-y-1)wherein M is a metal from groups IIIB to VIII of the Periodic Table; each L and L' is independently a cycloalkadienyl group bonded to M; each Y is independently hydrogen, an aryl, alkyl, alkenyl, alkylaryl, or arylalkyl radical having 1-20 carbon atoms, a hydrocarboxy radical having from 1-20 carbon atoms, a halogen, RCO.sub.2 --, or R.sub.2 N--, wherein R is a hydrocarbyl group containing 1 to about 20 carbon atoms; n and m are each 0, 1, 2, 3, or 4; y is 0, 1, or 2; x is 1, 2, 3, or 4; and x-y.gtoreq.1; C) a bulky aluminum alkyl of the formula:AlR.sup.1.sub.x R.sup.2.sub.(3-x)wherein R.sup.1 is a hydrocarbyl group having 1 to 12 carbon atoms; x is an integer from 0 to 2; R.sup.2 is a hydrocarbyl group of the formula --(CH.sub.2).sub.y -- R.sup.Type: GrantFiled: November 28, 1995Date of Patent: May 26, 1998Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Eric Paul Wasserman, Sun Chueh Kao, Frederick John Karol
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Patent number: 5747406Abstract: A catalyst composition comprising the reaction product of a) a monocycloalkadienyl catalyst precursor; b) an activity enhancing cycloalkadiene; and c) an activating cocatalyst is disclosed, which has high activity in the polymerization of olefins.Type: GrantFiled: January 10, 1997Date of Patent: May 5, 1998Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Walter Thomas Reichle, Xinmin Yang, Frederick John Karol
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Patent number: 5674795Abstract: Metallocene-containing catalyst compositions that include inert filler, a method for their preparation, and a method for their use in production of polyolefins are disclosed and claimed. The catalyst compositions contain solid particles of a mixture comprising a) a metallocene catalyst; b) a cocatalyst capable of activating said metallocene catalyst; and c) particulate filler material having an average particle size of less than about 10 micrometers that is unreactive with the metallocene catalyst and the cocatalyst. They are prepared by spray drying a slurry of the constituents.Type: GrantFiled: June 7, 1995Date of Patent: October 7, 1997Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Eric Paul Wasserman, Mark Wilton Smale, Timothy Roger Lynn, Robert Converse Brady, III, Frederick John Karol
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Patent number: 5672669Abstract: Metallocene-containing catalyst compositions that include inert filler, a method for their preparation, and a method for their use in production of polyolefins are disclosed and claimed. The catalyst compositions contain solid particles of a mixture comprising a) a metallocene catalyst; b) a cocatalyst capable of activating said metallocene catalyst; and c) particulate filler material having an average particle size of less than about 10 micrometers that is unreactive with the metallocene catalyst and the cocatalyst. They are prepared by spray drying a slurry of the constituents.Type: GrantFiled: June 7, 1995Date of Patent: September 30, 1997Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Eric Paul Wasserman, Mark Wilton Smale, Timothy Roger Lynn, Robert Converse Brady III, Frederick John Karol
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Patent number: 5648310Abstract: Metallocene-containing catalyst compositions that include inert filler, a method for their preparation, and a method for their use in production of polyolefins are disclosed and claimed. The catalyst compositions contain solid particles of a mixture comprising a) a metallocene catalyst; b) a cocatalyst capable of activating said metallocene catalyst; and c) particulate filler material having an average particle size of less than about 10 micrometers that is unreactive with the metallocene catalyst and the cocatalyst. They are prepared by spray drying a slurry of the constituents.Type: GrantFiled: June 26, 1995Date of Patent: July 15, 1997Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Eric Paul Wasserman, Mark Wilton Smale, Timothy Roger Lynn, Robert Converse Brady, III, Frederick John Karol