Patents Represented by Attorney, Agent or Law Firm Joseph F. Reidy
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Patent number: 6156810Abstract: A solid nucleophilic reagent for the conversion of benzylic halogen functionality on polymers to other functionalities, and methods of making and using the same.Type: GrantFiled: July 21, 1997Date of Patent: December 5, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Chia S. Chee, Hsien-Chang Wang, Kenneth William Powers
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Patent number: 6153550Abstract: The invention relates to a catalyst composition for olefin polymerization comprising metallocene complexes and novel cocatalysts belonging to the group of perfluorinated oligoarylaluminates, oligoarylthioaluminates and oligoarylaminoaluminates. These cocatalysts are produced by two alternative synthetic methods, either by reacting alkylalumoxanes with pentafluorophenol, pentafluorothiophenol, or with pentafluoroaniline, respectively; or in two-step processes comprising first reacting trialkylaluminum compounds with said perfluorinated agents and then by reacting the products of the first step with water. Catalyst systems containing these cocatalysts and metallocene complexes are active in polymerization and copolymerization reactions of ethylene and alpha-olefins.Type: GrantFiled: December 18, 1997Date of Patent: November 28, 2000Assignee: Mobile Oil CorporationInventor: Yury V Kissin
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Patent number: 6136742Abstract: This invention relates to metallocene catalyst systems and to methods for their production and use. Specifically, this invention relates to catalyst promoters which increase the activity of the metallocene catalyst systems. The promoters can be, for example, styrene or substituted styrene in one embodiment. The metallocene catalyst systems can be used, for example, to make olefins. The catalyst systems of this invention can be supported.Type: GrantFiled: May 22, 1997Date of Patent: October 24, 2000Assignee: Exxon Chemical Patents, Inc.Inventor: Main Chang
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Patent number: 6100354Abstract: A process for preparing substantially random olefin copolymers containing geminally disubstituted olefin monomers is described. The geminally disubstituted olefin monomers can be represented by the generic formula R.sub.1 =R.sub.2 (R.sub.3)(R.sub.4), where R.sub.1 is CH.sub.2, R.sub.2 is C, and R.sub.3 and R.sub.4 are, independently, essentially linear hydrocarbyl groups having from 1 to 30 carbon atoms, or more, and containing one carbon atom bound directly to R.sub.2. The copolymers can be prepared by contacting at least one geminally disubstituted olefin monomer and one or more comonomers selected from the group consisting of ethylene and C.sub.3 -C.sub.20 .alpha.-olefins, optionally with one or more other coordination polymerizable monomers, with a active coordination catalyst system comprising a bridged bis(arylamido) Group 4 catalyst component.Type: GrantFiled: February 24, 1997Date of Patent: August 8, 2000Assignee: Exxon Chemical Patents Inc.Inventors: Timothy Daniel Shaffer, Kevin Richard Squire
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Patent number: 6094889Abstract: A film having a polypropylene surface layer and a polyethylene surface layer is used in fill and seal packaging applications, in which the polyethylene layer consists essentially of a ethylene copolymer having a narrow molecular weight distribution ethylene and a CBDI of greater than 50%. The package is formed by heat sealing the polyethylene surface to the polypropylene surface of the film to form a transverse seal.Type: GrantFiled: February 25, 1997Date of Patent: August 1, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Achiel Josephus Van Loon, Fiona Donald, Patrick Henk Espeel
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Patent number: 6090740Abstract: This invention relates generally to supported metallocene catalyst systems and to methods for their production which comprising combining inorganic porous support material having an average particle size of from about 30.mu. to about 40.mu., metallocene, and alumoxane wherein the amount of metallocene is in the range of 0.005 to 0.06 mmoles transition metal/g support material and the ratio of aluminum to transition metal is in the range of 10:1 to 300:1. Specifically, this invention relates to supported metallocene catalyst systems having improved metallocene loading and optionally reduced support particle size. These catalyst systems are particularly useful for the polymerization of ethylene polymers.Type: GrantFiled: January 23, 1997Date of Patent: July 18, 2000Assignee: Exxon Chemical Patents Inc.Inventors: Agapios K. Agapiou, Dwayne L. Litteer, Michael E. Muhle
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Patent number: 6087454Abstract: This invention relates to a process to produce curable and/or cured elastomeric compositions and the curable and/or cured compositions so produced. More specifically, in a preferred embodiment, this invention relates to elastomers containing hydroxyl and/or amine functionality curable and/or cured with a blocked polyisocyanate. Preferred elastomers include isobutylene based elastomers.Type: GrantFiled: February 2, 1998Date of Patent: July 11, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Gerard Marie Vanhaeren, Avinash Chandrakant Gadkari
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Patent number: 6087291Abstract: This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst system of the invention provides for a metallocene catalyst and alumoxane activator supported on a porous support using a total volume of catalyst solution that is less than that of which a slurry is formed. The metallocene and alumoxane aer mixed in solution, then the solution is added to a porous support in a volume between the total pore volume of the support and the volume at which a slurry forms. The solvent is then removed, leaving an activated supported metallocene.Type: GrantFiled: October 24, 1997Date of Patent: July 11, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Anthony Nicholas Speca, Jeffrey Lawrence Brinen, George Alan Vaughan, Patrick Brant, Terry John Burkhardt
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Patent number: 6060549Abstract: Toughened nanocomposite materials are prepared based on a blend of one or more thermoplastic engineering resins, e.g., nylon, a functionalized, e.g. brominated, copolymer of a C.sub.4 -C.sub.7 isomonoolefin, e.g. isobutylene, and a para-alkylstyrene, e.g. para-methylstyrene, and further contain a uniformly dispersed exfoliated phyllosilicate layered clay, e.g., montmorillonite. The nanocomposite materials exhibit superior mechanical properties, including enhanced impact strength.Type: GrantFiled: May 20, 1997Date of Patent: May 9, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Dongming Li, Dennis George Peiffer, Chester W. Elspass, Hsien-Chang Wang
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Patent number: 6051653Abstract: The invention provides for curable compositions containing a halogenated copolymer of a C.sub.4 to C.sub.7 isomonoolefin, e.g., isobutylene and a para-alkylstyrene, e.g., para-methylstyrene, and further containing an effective amount of a metal salt, e.g. zinc, of an unsaturated carboxylic acid, e.g. methacrylic acid, as a curing agent. The composition also contains an organic peroxide as a co-curative and one or a mixture of saturated polymer blend components which are co-curable with the halogenated copolymer. The curable composition may further comprise EPDM.Type: GrantFiled: November 4, 1998Date of Patent: April 18, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Kenneth Odell McElrath, Hsien-Chang Wang
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Patent number: 6028144Abstract: A composition, suitable for use in producing a tire carcass, is provided. The composition comprises a halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene; a rubber such as a blend of natural rubber and a copolymer of styrene and butadiene; carbon black, and a plasticizer oil. Tires comprising carcasses made of the composition are also provided.Type: GrantFiled: January 5, 1993Date of Patent: February 22, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Vi Thi Nguyen, Patrick Anthony Grosso
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Patent number: 6013594Abstract: This invention relates to catalyst supports made by spray drying an emulsion polymerized latex and the novel supported catalysts utilizing these supports. This invention further relates to a method for forming supported catalysts by spray drying a latex of microparticles containing catalyst or catalyst components. The polymizerable monomers used in the latex are e.g. styrenes, vinyl benzenes, vinyl cyclohexane and vinyl cyclohexene and can form homo- or copolymers which may be crosslinked. The catalysts supported include metallocenes as well as Ziegler-Natta catalysts. Processes of polymerizing olefins using such catalysts are also described.Type: GrantFiled: April 29, 1998Date of Patent: January 11, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Henry Wu-Hsian Yang, Anthony Nicholas Speca
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Patent number: 6013727Abstract: A thermoplastic composition which may be unvulcanized or vulcanized is provided which comprises a polymer blend of an elastomeric thermoplastic engineering resin and a halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene. A process for preparing a dynamically vulcanized composition is also provided.Type: GrantFiled: January 31, 1991Date of Patent: January 11, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Narayanaswami Raja Dharmarajan, Robert Chester Puydak, Hsien Chang Wang, Kenneth William Powers, Thomas Chen-Chi Yu, Donald Ross Hazelton
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Patent number: 6008282Abstract: Styrene/acrylonitrile (SAN) resin compositions are provided having both improved room temperature impact properties as well as good weatherability. The compositions comprise a mixture of SAN resin, an elastomeric halogenated copolymer comprising a C.sub.2 to C.sub.12 monoolefin, e.g. isobutylene, and a ring-substituted alklstyrene, e.g., para-methylstyrene, and a compatibilizing agent such as zinc stearate.Type: GrantFiled: November 26, 1996Date of Patent: December 28, 1999Assignee: Exxon Chemical Patents, Inc.Inventors: Hsien-Chang Wang, Richard Cheng-Ming Yeh
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Patent number: 5981643Abstract: Copolymers of ethylene and a cyclic olefin, preferably a fused ring cyclic olefin (FRCO), optionally containing an alpha-olefin and/or a non-conjugated diene, display increasing glass transition temperatures (T.sub.g) as the amount of FRCO in the copolymer increases. This increase brings these polymers quickly above a T.sub.g acceptable as elastomers. Addition of specially selected process oils, based on cohesive energy densities of both the copolymer and the process oil, is shown to lower T.sub.g to a range acceptable for elastomers e.g. below about -30.degree. C. The copolymer/process oil combination can then be used in elastomer compounding operations and behave in typical elastomer fashion.Type: GrantFiled: October 9, 1997Date of Patent: November 9, 1999Assignee: Exxon Chemical Patents, Inc.Inventors: Sudhin Datta, Bruce A. Harrington