Patents Represented by Attorney, Agent or Law Firm Edward L. Bowman
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Patent number: 6403516Abstract: A process for preparing pillared chromium phyllosilicate clay &agr;-olefin catalysts is disclosed. This process utilizes palygorskite and sepiolite clays. The pillaring of said clays comprise the steps of: (a) preparing a hydrolyzed first solution by dissolving a chromium salt and a base in water, heating said first solution to a temperature in the range of about 20° C. to about 100° C. while stirring continuously until the solution reaches a pH in the range of about 1.5 to about 2.5 and thereby producing a master batch; (b) diluting said master batch with water to produce a diluted second solution and heating said diluted second solution to produce a heated second solution; (c) adding a solid clay selected from the group consisting of sepiolites and palagorskites to said heated second solution, and continuing heating; (d) recovering said pillared chain silicate clay; (e) drying said pillared chain silicate clay to form first product.Type: GrantFiled: February 22, 1994Date of Patent: June 11, 2002Assignee: Phillips Petroleum CompanyInventor: Joseph S. Shveima
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Patent number: 6403734Abstract: Bridged fluorenyl-containing metallocenes of metals of Groups 4-6 and their use in forming homopolymers of alpha olefins or polymers of ethylene and optionally minor amounts of alpha olefins, wherein in each case at least one of the cyclic groups of the bridged ligand is a fluorenyl and the other is selected from indenyl, tetrahydroindenyl, fluorenyl, and in the case of the polymerization of ethylene optionally cyclopentadienyl.Type: GrantFiled: November 23, 1998Date of Patent: June 11, 2002Assignee: Phillips Petroleum CompanyInventors: Helmut G. Alt, Syriac J. Palackal, Konstantinos Patsidis, M. Bruce Welch, Rolf L. Geerts, Eric T. Hsieh, Max P. McDaniel, Gil R. Hawley, Paul D. Smith
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Patent number: 6384161Abstract: The present invention provides a process for preparing a supported metallocene catalyst system that can be used to catalyze formation of polyolefins having a wide molecular weight range. In accordance with the process of the present invention, a first portion of an inorganic oxide is dried under a first set of conditions, wherein upon treatment with an organoaluminoxide and a metallocene, a first catalyst system is formed usable to produce a polyolefin product having a first molecular weight average distribution. A second portion of an inorganic oxide under a second set of conditions, wherein upon treatment with an organoaluminoxane and a metallocene, a second catalyst system is formed usable to produce polyolefin product having a second molecular weight distribution. An amount of the first portion is mixed with an amount of the second portion to produce a final inorganic oxide support.Type: GrantFiled: December 30, 1999Date of Patent: May 7, 2002Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, David W. Dockter, Syriac J. Palackal, Bryan E. Hauger, David C. Rohlfing
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Patent number: 6380329Abstract: A process is provided which comprises preparing heterogeneous or homogeneous catalyst systems comprising cyclodisilizane complexes of Group IV metals wherein said metal is selected from consisting of titanium, zirconium and hafnium; and a cocatalyst selected from the group consisting of methylaluminoxane and fluoro organic boron compounds and mixtures thereof. This invention also provides polymerization processes comprising contacting a mono-1-olefin, and optionally one or more higher alpha-olefins, in a reaction zone with cyclodisilizane complexes of Group IV metals catalyst systems and in the presence of a cocatalyst selected from the group consisting of aluminoxane, fluoro organic boron compounds, and mixtures thereof are provided.Type: GrantFiled: December 29, 1999Date of Patent: April 30, 2002Assignee: Phillips Petroleum CompanyInventors: Michael D. Jensen, Kenneth R. Farmer
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Patent number: 6372930Abstract: Polymeric ligands, polymeric metallocenes, and processes for preparing same are provided. The process for preparing polymeric metallocenes comprises reacting a polymeric ligand, a transition metal compound, and an alkali metal compound. In one embodiment, a process for preparing polymeric ligands comprises reacting at least one bridged cyclopentadienyl-type monomer and an initiator under polymerization conditions. In another embodiment, a polymeric ligand is represented by the formula [Q′]n, wherein Q′ is a unit containing at least one bridged cyclopentadienyl-type group and wherein n is 1-5000.Type: GrantFiled: February 10, 2000Date of Patent: April 16, 2002Assignee: Phillips Petroleum CompanyInventors: Peter Schertl, Helmut G. Alt, M. Bruce Welch, Bernd Peifer, Syriac J. Palackal
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Patent number: 6355359Abstract: A self supporting film having one or more layers wherein at least one layer has a percent haze of less than 17.8 and the polymer of that layer consists essentially of a polyethylene having a density of at least 0.925 grams per cc, a molecular weight distribution of no more than 4, optionally containing a fluoroelastomer, and methods for making such film are disclosed.Type: GrantFiled: October 31, 2000Date of Patent: March 12, 2002Assignee: Phillips Petroleum CompanyInventors: Ashish M. Sukhadia, William R. Coutant, Jim D. Byers, Louis Moore, Jr., M. Bruce Welch, Syriac J. Palackal, Kiplin D. Cowan, David C. Rohlfing, Jay Janzen, Paul J. DesLauriers, William M. Whitte
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Patent number: 6353071Abstract: Processes are provided that produce organo-aluminoxane compositions. Said processes comprise: desiccating a first mixture, where said first mixture comprises organo-aluminoxane molecules intermixed with a solvent, to produce a first composition, where said first composition comprises organo-aluminoxane molecules; mixing said first composition with a solvent to produce a second mixture, where said second mixture comprises organo-aluminoxane molecules and said solvent; contacting said second mixture with a insolublization agent to produce said organo-aluminoxane compositions. A polymerization process using a catalyst that comprises an organo-aluminoxane composition is also provided.Type: GrantFiled: January 21, 2000Date of Patent: March 5, 2002Assignee: Phillips Petroleum CompanyInventors: Syriac J. Palackal, M. Bruce Welch, Rolf L. Geerts
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Patent number: 6340651Abstract: A process for producing a metallocycle metallocene comprising reacting a reactant metallocene which has a cyclopentadienyl group having an alkenyl group attached which has at least 3 carbon atoms with about 2 molar equivalents of an alkali metal alkyl having at least 4 carbon atoms, catalyst systems resulting from the combination of the metallocycle metallocene and an organic cocatalyst, and polymerization processes using such catalyst systems are disclosed.Type: GrantFiled: April 26, 1999Date of Patent: January 22, 2002Assignee: Phillips Petroleum CompanyInventors: Erik Licht, Helmut G. Alt, M. Bruce Welch
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Patent number: 6339035Abstract: A catalyst system comprising the product resulting from the combination of a metallocene having a monoorganoamide radical attached to the metal of the metallocene and a cocatalyst having alkylaluminum groups and the use of such catalyst systems in the polymerization of olefin.Type: GrantFiled: February 22, 1999Date of Patent: January 15, 2002Assignee: Phillips Petroleum CompanyInventor: Joel L. Martin
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Patent number: 6329541Abstract: An (organo) ((omega-alkenyl) cyclopentacarbyl) (silane-bridged) metallocene compound is provided. Polymerization processes therewith are also provided.Type: GrantFiled: November 14, 1997Date of Patent: December 11, 2001Assignee: Phillips Petroleum CompanyInventors: Michael Jung, Helmut G. Alt, M. Bruce Welch
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Patent number: 6329312Abstract: Metallocycle metallocenes are produced by reacting a first metallocene having an aralkyl group or an aryl dialkyl silyl group attached to a cyclodienyl group with about two molar equivalents of an alkali metal alkyl having at least 4 carbon atoms. The use of the metallocycle metallocenes as components of catalyst for the polymerization of olefins is also disclosed.Type: GrantFiled: June 17, 1999Date of Patent: December 11, 2001Assignee: Phillips Petroleum CompanyInventors: Erik Licht, Helmut G. Alt, M. Bruce Welch
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Patent number: 6329476Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymers and ultra high molecular weight ethylene copolymers. Catalyst systems used are selected from the group consisting of inorganic oxide supported titanium-containing catalyst systems, inorganic oxide supported organo-zirconium catalyst systems and inorganic oxide supported organo-hafnium catalyst systems.Type: GrantFiled: October 14, 1997Date of Patent: December 11, 2001Assignee: Phillips Petroleum CompanyInventors: Joel L. Martin, Joseph J. Bergmeister, Eric T. Hsieh, Max P. McDaniel, Elizabeth A. Benham, Steven J. Secora
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Patent number: 6294494Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra-high molecular weight ethylene homopolymer.Type: GrantFiled: December 18, 1998Date of Patent: September 25, 2001Assignee: Phillips Petroleum CompanyInventors: Max P. McDaniel, Elizabeth A. Benham
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Patent number: 6291382Abstract: Metallocenes having a 9-fluorenyl group and another cyclic dienyl group connected by a single carbon having a terminally unsaturated hydrocarbyl substituent wherein the 9-fluorenyl group has a hydrocarbyl substituent in the 4 position, olefin polymerization catalyst systems prepared therefrom, and the use of such catalyst systems are disclosed.Type: GrantFiled: May 24, 1999Date of Patent: September 18, 2001Assignee: Phillips Petroleum CompanyInventors: Alexander Köppl, Helmut G. Alt, M. Bruce Welch
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Patent number: 6291608Abstract: A process is provided to prepare polyolefins having a multimodal molecular weight distribution comprising contacting at least one mono-1-olefin in a polymerization zone, under polymerization conditions, with a dual catalyst system comprising a first catalyst system which comprises a metallocene catalyst and a cocatalyst and a second catalyst system which comprises diimine nickel complexes which further comprise additional ligands selected from the group consisting of ∝-deprotoned-&bgr;-diketones, ∝-deprotoned-&bgr;-ketoesters, halogens and mixtures thereof. The resultant, recovered polymer has at least a bimodal, or broad, molecular weight distribution.Type: GrantFiled: December 23, 1998Date of Patent: September 18, 2001Assignee: Phillips Petroleum CompanyInventors: Nancy W. Eilerts, Bryan Hauger, M. Bruce Welch, Harold R. Deck
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Patent number: 6274675Abstract: A process to produce a multicomponent ethylene polymer composition is provided. This process comprises: (a) contacting an organic peroxide with at least one post consumer ethylene polymer resin that has a density from about 0.95 to 0.97 grams per cubic centimeter and a melt index from about 0.3 to about 1 gram per ten minutes; and thereafter (b) blending the composition formed in (a) with at least one virgin ethylene polymer resin that has a density from about 0.93 to 0.945 grams per cubic centimeter and a melt index from about 0.01 to about 0.16 grams per ten minutes.Type: GrantFiled: October 29, 1993Date of Patent: August 14, 2001Assignee: Phillips Petroleum CompanyInventors: JoEllen DePorter, Lawrence M. Fodor
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Patent number: 6268453Abstract: A solid cocatalyst is prepared by reacting a suitable support base with an organoaluminum compound and then reacting that product with an activity promoting amount of water. The solid cocatalyst can be combined with a polymerization catalyst to form a catalyst system useful for the polymerization of olefins.Type: GrantFiled: October 18, 1999Date of Patent: July 31, 2001Assignee: Phillips Petroleum CompanyInventors: Alexander Köppl, Helmut G. Alt, Syriac J. Palackal, M. Bruce Welch
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Patent number: 6262201Abstract: Substituted metallocenes which have a substituent selected from the group consisting of aryl alkyl, aryl alkyl silyl, and aryl silyl groups, catalyst systems resulting from the combination of such metallocenes and a cocatalyst, and for producing olefins using such catalyst systems.Type: GrantFiled: June 17, 1999Date of Patent: July 17, 2001Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, Erik Licht, Helmut G. Alt
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Patent number: 6248840Abstract: A process comprising reacting at least one polymer component, with at least one reactive component, to produce a composition, the polymer being a metallocene polymerized ethylene (co)polymer, and the reactive component being a crosslinking agent.Type: GrantFiled: December 28, 1998Date of Patent: June 19, 2001Assignee: Phillips Petroleum CompanyInventors: Ashish M. Sukhadia, M. Bruce Welch, William M. Whitte, Syriac J. Palackal, William R. Coutant
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Patent number: 6239300Abstract: A number of process steps are provided that can be combined to produce bridged cyclopentadienyl-fluorenyl metallocenes. The process steps include production of a cyclopentadiene compound from dicyclopentadiene; production and recovery of a fulvene compound using the cyclopentadiene compound; production of a raw metallocene product using the fulvene compound; and recovery of the pure metallocene from the raw product.Type: GrantFiled: February 17, 1999Date of Patent: May 29, 2001Assignee: Phillips Petroleum CompanyInventors: Carleton E. Stouffer, Syriac J. Palackal, Gary L. Glass, M. Bruce Welch, John D. Hottovy, Michael D. Jensen