Patents Examined by Michael J. DiVerdi
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Patent number: 6232255Abstract: A catalyst system for the polymerization of olefins which includes a solid catalyst component and a cocatalyst. The solid catalyst component includes the contact product of silica, an alkyl magnesium-containing species, a compound having the structural formula E(YZ)mX4-m, where E is an atom of an element of Group 14 of the Periodic Table of the Elements; Y is an atom of an element of Group 16 of the Periodic Table of the Elements; Z is hydrogen, hydrocarbyl or mixtures thereof; X is hydrogen, halogen, hydrocarbyl or mixtures thereof; and m is an integer of 1 to 4 and a tetravalent titanium compound. The cocatalyst includes a mixture of at least two compounds having the structural formula AlRxX13-x, where R is the same or different and is hydrocarbyl; X1 is halogen; and x is an integer of 1 to 3 with the proviso that at least one of the compounds is defined by x being 3 and at least one of the compounds as defined by x being 1 or 2.Type: GrantFiled: September 16, 1999Date of Patent: May 15, 2001Assignee: Equistar Chemicals, LPInventors: Linda N. Winslow, Garry L. Fields, Kenneth W. Johnson
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Patent number: 6231662Abstract: An additive for enhancing the performance of industrial pigments. The additive improves dispersibility and is the reaction product of an amine, a fatty amine, and a polybasic acid.Type: GrantFiled: October 25, 1999Date of Patent: May 15, 2001Inventor: George K. Atkinson
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Patent number: 6231660Abstract: A manufactured granular substrate composition suitable for use as a carrier for active chemical agents. The composition includes about 65 wt % or more of one or more mineral components having a bulk density greater than about 70 pounds per cubic foot. The composition also contains about 5 wt % to about 25 wt % of one or more light weight additives and up to 20 wt % of one or more water soluble binders. The resulting manufactured granular substrate is readily dispersable in water and has a bulk density of less than about 55 pounds per cubic foot with a size guide number of about 100 to about 230.Type: GrantFiled: June 29, 1999Date of Patent: May 15, 2001Assignees: The National Lime and Stone Co., The Andersons, Inc.Inventors: James W. Welshimer, David L. Ashworth, Peter V. Cawlfield, Nadine C. Dunn, Gerald L. Gingrich, Karissa L. Fox, Kim W. Venable, Paul Weinstein, Timothy D. Birthisel
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Patent number: 6228791Abstract: The present invention is a solid catalyst component for polymerization of olefins prepared by contacting a magnesium compound, a tetravalent halogen-containing titanium compound, a diester of an aromatic dicarboxylic acid, an aromatic hydrocarbon and an organic aluminum compound containing a hydroxyl group represented by the following general formula (R1CO2)mAl(OH)3-m or aluminum hydroxide. The catalyst for polymerization of olefins comprising said solid catalyst component, an organic aluminum compound represented by the general formula R2pAlQ3-p and an organic silicon compound represented by the general formula R3qSi(OR4)4-q can retard the rate of forming a polymer having a low molecular weight or a low stereoregular polymer which is soluble in a polymerization solvent in slurry polymerization and can obtain a high stereoregular polymer in a high yield, and also can obtain a copolymer having an excellent property in a high yield in the copolymerization of olefins.Type: GrantFiled: July 6, 1999Date of Patent: May 8, 2001Assignee: Toho Titanium Co., Ltd.Inventors: Takuo Kataoka, Masayoshi Saito, Isa Nishiyama
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Patent number: 6221147Abstract: Bismuth manganese oxide pigments are used as additives to various materials such as plastics, plastic or organic coating compositions, glass and ceramic coating compositions, and the like. The bismuth manganese oxide pigments preferably comprise Bi2Mn4O10 crystallized in the orthorhombic crystal structure. The pigments possess improved reflectance characteristics, particularly in the IR region, and may reduce IR-induced heat buildup.Type: GrantFiled: December 18, 1998Date of Patent: April 24, 2001Assignee: Cerdec Aktiengesellschaft Keramischre FarbenInventors: George Emil Sakoske, Joseph E. Sarver, Miroslav Novotny
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Patent number: 6221145Abstract: A process for producing water-based paint from a plurality of premixed compositions includes mixing at least two of a pigment composition, a dispersant thickening agent, a high resin content binder, and a low resin content binder. The pigment composition includes a pigment, water, a mixture of clay and silica, a viscosity controlling agent, and a dispersant thickener. The dispersant thickening agent includes a phosphate-based dispersant, water, a cellulosic thickener, and a coalescent.Type: GrantFiled: December 23, 1998Date of Patent: April 24, 2001Assignee: Coating Management Systems, Inc.Inventor: C. Daniel McClain
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Patent number: 6214762Abstract: A method of producing metal fulvene insertion complexes, as well as new fulvene metal insertion complexes and the use thereof as catalysts for the polymerization of olefins and/or dienes and as hydrogenation catalysts.Type: GrantFiled: August 13, 1999Date of Patent: April 10, 2001Assignee: Bayer AktiengesellschaftInventors: Rüdiger Beckhaus, Jürgen Heinrichs, Sigurd Becke
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Patent number: 6211107Abstract: This invention relates to the catalyst (III) and intermediates for its preparation in which M is a transition metal ion; A is a counter-ion if required; B, B′, and E and E′ are independently selected from the group consisting of hydrogen aryl, C1-6alkyl, silyl or aryl-C1-6 alkyl in which any aryl or alkyl moiety is optionally substituted or B′ and B or E′ and E together form a C2-6 polymethylene link; with the proviso that only one of the carbons marked with an asterisk if a chiral center; R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 are independently hydrogen, alkyl or alkoxyType: GrantFiled: August 27, 1998Date of Patent: April 3, 2001Assignee: SmithKline Beecham p.l.c.Inventors: David Bell, Frances Finney, Robin Patrick Attrill, David Miller, Gillian Turner
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Patent number: 6200921Abstract: The objective of the present invention is to provide a solid catalyst component and a catalyst for polymerization of olefins, which shows a high activity, can lower the rate of forming a polymer having a low molecular weight or a low stereoregular polymer which is soluble in a polymerization solvent and can obtain a high stereoregular polymer in a high yield. The present invention is a solid catalyst component(A) for polymerization of olefins prepared by contacting (a) dialkoxymagnesium, (b) a titanium compound, (c) a diester of an aromatic dicarboxylic acid, (d) an aromatic hydrocarbon and (e) an organic silicon compound containing a hydroxyl group, and a catalyst for polymerization of olefins prepared from the solid catalyst component (A) , an organic aluminum compound (B) represented by the general formula R2pAlQ3-p and an organic silicon compound (C) represented by the general formula R3qSi(OR4)4-q.Type: GrantFiled: October 26, 1999Date of Patent: March 13, 2001Assignee: Toho Titanium Co., Ltd.Inventor: Takuo Kataoka
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Patent number: 6200925Abstract: The present invention provides catalyst systems useful in the polymerization of olefins comprising a transition metal component and a ligand component comprising a Nitrogen atom and/or functional groups comprising a Nitrogen atom, generally in the form of an imine functional group. In certain embodiments, the ligand component may further comprise a phosphorous atom. Preferred ligand components are bidentate (bind to the transition metal at two or more sites) and include a nitrogen-transition metal bond. The transition metal-ligand complex is generally cationic and associated with a weakly coordinating anion. In a preferred embodiment, the catalyst system of the present invention further comprises a Lewis or Bronsted acid complexed with the ligand component of the transition metal-ligand complex.Type: GrantFiled: December 29, 1998Date of Patent: March 13, 2001Assignee: Eastman Chemical CompanyInventors: James Allen Ponasik, Jr., Jason Patrick McDevitt, Christopher Moore Killian, Peter Borden Mackenzie, Leslie Shane Moody, Gino Georges Lavoie
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Patent number: 6197103Abstract: A composition of copper phthalocyanines containing, on average, from 0.1 to 3 methyl groups per phthalocyanine nucleus. The composition is suitable for the coloration of paints and plastics materials.Type: GrantFiled: November 10, 1994Date of Patent: March 6, 2001Assignee: Zeneca LimitedInventors: Peter Kingsley Davies, John David Schofield, John Michael McCarthy
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Patent number: 6197714Abstract: Non-ionic bidentate late transition metal chelates tethered to an inert support by a covalent bond group to provide a catalyst useful in slurry and gas phase polymerization of olefins.Type: GrantFiled: March 23, 1999Date of Patent: March 6, 2001Assignee: Cryovac, Inc.Inventors: Donald Albert Bansleben, Eric Francis Connor, Robert Howard Grubbs, Jason Ivan Henderson, Andrew Robert Nadjadi, Jr., Todd Ross Younkin
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Patent number: 6197715Abstract: Non-ionic late transition metal chelates of salicylaldimine and pyrrolaldimine can be tethered to an inert support by a covalent bond to provide a catalyst useful in slurry and gas phase polymerization of olefins.Type: GrantFiled: March 23, 1999Date of Patent: March 6, 2001Assignee: Cryovac, Inc.Inventors: Donald Albert Bansleben, Eric Francis Connor, Robert Howard Grubbs, Jason Ivan Henderson, Andrew Robert Nadjadi, Jr., Todd Ross Younkin
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Patent number: 6194339Abstract: An ethylene polymerization catalyst and a catalyst system which provides an ethylene copolymer which, when formed into a film, is characterized by the combination of high stiffness and impact strength. The ethylene polymerization catalyst is formed by contacting a support with an organosilicon compound. The so-treated support is thereupon contacted, in a second step, with a dialkylmagnesium compound or complex. In a third step, the product of the second step is contacted with an alcohol or silane compound. This product, in turn, in a fourth step, is contacted with a transition metal compound. Finally, in a fifth and concluding step, the product of the fourth step is contacted with a Group 13 metal-containing compound. The second and third, as well as the third and fourth contacting steps may be reversed.Type: GrantFiled: November 17, 1999Date of Patent: February 27, 2001Assignee: Equistar Chemicals, LPInventor: William J. Sartain
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Patent number: 6193795Abstract: A method of producing a low structure pyrogenic metal oxide filler is disclosed. The method involves subjecting pyrogenically produced metal oxide agglomerates and aggregates selected from silicon oxide, aluminum oxide, zirconium oxide, or titanium oxide to a dry milling process whereby the pyrogenically produced metal oxide is contacted in an agitating zone with an energy specific force.Type: GrantFiled: April 29, 1994Date of Patent: February 27, 2001Assignee: Degussa CorporationInventors: Maria R. Nargiello, Gary J. Bush, Sturgis G. Allen
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Patent number: 6184169Abstract: An ethylene polymerization catalyst and catalyst system which produces ethylene copolymers having unique melt elastic properties at high catalytic activity. The catalyst is produced by the steps which include contacting silica having a surface area of between above about 500 m2/g and about 800 m2/g, a particle size in the range of between about 10 microns and about 200 microns and a pore volume of between about 0.5 cc/g and about 3.0 cc/g with an organosilicon compound. This product is contacted with a dialkylmagnesium compound or complex. The product of this step, in turn, is contacted with an alcohol or silane compound. Finally, the thus formed product is contacted with a transition metal compound.Type: GrantFiled: November 17, 1999Date of Patent: February 6, 2001Assignee: Equistar Chemicals, LPInventor: William J. Sartain
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Patent number: 6180554Abstract: The present invention relates to a catalyst system comprising: a) an organoaluminum compound, b) a metal compound selected from subgroups IV to VI of the periodic system, c) a reactivator in a molar ratio of 0.5 to 100 relative to compound b), wherein said reactivator comprises a characterized in that a mono- or dihalocarboxylic acid alkyl ester of the following formula: wherein X is a C1-6 alkyl or C1-6 alkoxy group, Y is Cl, Br or H, Z is Cl or Br and R is a C1-6 alkyl group.Type: GrantFiled: June 22, 1999Date of Patent: January 30, 2001Assignee: Bayer AktiengesellschaftInventors: Martin Hoch, Johannes-Rudolf Jansen, Thomas Essert, Andreas Sattler, J{umlaut over (u)}rgen Schneider
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Patent number: 6174359Abstract: Ceramic decoration coloring substances substantially containing a zirconium pigment of the host lattice or inclusion type and a glass flux at a pigment volume concentration (PVC) of at least 30% have an increased color saturation C* if the glass flux comprises at least 71 wt. % PbO. Preferred decoration coloring substances have a PVC in the range from 40 to 70% and a PbO content of 75 to 85 wt. %. The decoration coloring substances are especially suitable for production of decorations, burned at 1000 to 1250°C, with increased color saturation C*.Type: GrantFiled: September 28, 1998Date of Patent: January 16, 2001Assignee: Cerdec Aktiengesellschaft Keramische FarbenInventors: Dietrich Speer, Holger Jarnicki, Adalbert Huber
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Patent number: 6174360Abstract: The present invention provides new solid solutions having a corundum-hematite crystalline structure which are useful as inorganic color pigments. Solid solutions according to the present invention include a host component having a corundum-hematite crystalline structure which contains as guest components one or more elements from the group consisting of aluminum, antimony, bismuth, boron, chrome, cobalt, gallium, indium, iron, lanthanum, lithium, magnesium, manganese, molybdenum, neodymium, nickel, niobium, silicon, tin, titanium, vanadium, and zinc. Solid solutions according to the present invention are formed by thoroughly mixing compounds, usually metal oxides or precursors thereof, which contain the host and guest components and then calcining the compounds to form the solid solutions having the corundum-hematite crystalline structure. Some of the new solid solutions according to the present invention exhibit relatively low Y CIE tri-stimulus values and relatively high near infrared reflectance.Type: GrantFiled: October 26, 1998Date of Patent: January 16, 2001Assignee: Ferro CorporationInventors: Terrence R. Sliwinski, Richard A. Pipoly, Robert P. Blonski
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Patent number: 6171383Abstract: Bismuth manganese oxide green pigments are used as additives to various materials such as plastics, plastic or organic coating compositions, glass and ceramic coating compositions, and the like. The green bismuth manganese oxide pigments preferably comprise Bi12MnO20 crystallized in the cubic crystal structure. The pigments possess improved reflectance characteristics, particularly in the IR region, and may reduce IR-induced heat buildup.Type: GrantFiled: November 17, 1999Date of Patent: January 9, 2001Assignee: Cerdec Aktiengesellschaft Keramische FarbenInventors: George Emil Sakoske, Joseph E. Sarver