Patents Assigned to National Petro Chemicals Corporation
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Patent number: 4540755Abstract: Process for the polymerization of olefins comprising contacting an olefin, admixed with an oxygen-containing gas, with a supported organophosphoryl-chromium oxide catalyst.Type: GrantFiled: September 30, 1982Date of Patent: September 10, 1985Assignee: National Petro Chemicals CorporationInventors: Harry W. Mayhew, Richard J. French, Louis J. Rekers
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Patent number: 4536489Abstract: Novel high pore volume, high purity alumina gels and catalysts prepared therefrom are provided by a unique alumina gel preparation comprising hydrolyzing an aluminum alcoholate in a medium of a mixture of water and acetone aging the resultant product and thereafter washing with acetone. Processes for the polymerization of olefins utilizing the afore-described alumina gels are also included herein.Type: GrantFiled: September 12, 1983Date of Patent: August 20, 1985Assignee: National Petro Chemicals CorporationInventors: Anthony N. Speca, Roger D. Laib
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Patent number: 4472531Abstract: An olefin polymerization catalyst comprising a silica xerogel support having a pore volume greater than about 2.0 cc/g, the major portion of which volume is provided by pores having pore diameters ranging from 300 to 600 A and a surface area ranging from 200 to 500 m.sup.2 /g, and having deposited thereon a metal-containing catalytic material, such as chromium oxide, or other metal oxide. A suitable hydrogel is treated with a water miscible organic liquid to substantially displace the aqueous phase and the resultant organogel with or without intermediate drying is then impregnated by a concentrated aqueous solution of a metal salt decomposable to the oxide on subsequent calcination. Also disclosed is a polymerization process utilizing such a catalyst for the preparation of polymers and copolymers of 1-olefins having a maximum of 8 carbon atoms in the chain and having no branching nearer the double bond than the 4-position, e.g., ethylene polymers.Type: GrantFiled: July 2, 1981Date of Patent: September 18, 1984Assignee: National Petro Chemicals CorporationInventors: Anthony N. Speca, Louis J. Rekers
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Patent number: 4404340Abstract: Olefin polymerization catalysts comprised of a supported adduct of a trialkyl-dialkylphosphato-titanate and chromium trioxide, processes for their preparation and polymerization processes employing the same.Type: GrantFiled: December 24, 1982Date of Patent: September 13, 1983Assignee: National Petro Chemicals CorporationInventors: Anthony N. Speca, Stanley J. Katzen, Louis J. Rekers
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Patent number: 4234453Abstract: Olefin polymerization catalysts are prepared by depositing an organophosphoryl chromium product and an aluminum compound on an inorganic support material, and heating the support material in a non-reducing atmosphere at a temperature above about 300.degree. C. up to the decomposition temperature of the support material.Type: GrantFiled: September 20, 1976Date of Patent: November 18, 1980Assignee: National Petro Chemicals CorporationInventors: Louis J. Rekers, Stanley J. Katzen, Jerome H. Krekeler
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Catalyst composition, method for producing same and method for polymerization of 1-olefins with same
Patent number: 4234709Abstract: Supported catalyst compositions incorporating preformed materials comprising the reaction product of organophosphorus compounds such as the organophosphates and organophosphites with chromium trioxide, wherein the organic moiety is a hydrocarbon radical, e.g., alkyl, aralkyl, aryl, cycloalkyl, or the like or combinations thereof. Typical supports constitute an inorganic material of high surface area, especially a high pore volume (>1.96 cc/g) silica xerogel. Catalytically promoted polymerizations of 1-olefins proceed efficiently to products of specially adapted utility for molding, and particularly the production of blow molded articles. The polymerization activity of the catalyst compositions is promoted by heating in a dry, oxygen containing atmosphere. The catalysts are utilized alone or in conjunction with other catalytic ingredients such as organometallic and/or organo non-metallic reducing agents.Type: GrantFiled: May 7, 1976Date of Patent: November 18, 1980Assignee: National Petro Chemicals CorporationInventors: Louis J. Rekers, Stanley J. Katzen -
Patent number: 4192775Abstract: Olefin polymerization catalysts are prepared by depositing an organophosphoryl chromium product and an aluminum acetyl acetonate on an inorganic support material, and heating the support material in a non-reducing atmosphere at a temperature above about 300.degree. C. up to the decomposition temperature of the support material.Type: GrantFiled: July 17, 1978Date of Patent: March 11, 1980Assignee: National Petro Chemicals CorporationInventors: Louis J. Rekers, Stanley J. Katzen, Jerome H. Krekeler
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Patent number: 4189402Abstract: Polymerization of 1-olefins is conducted with a supported catalyst consisting essentially of a polymeric hydrocarbon aluminate comprising at least one ##STR1## unit.Type: GrantFiled: November 17, 1978Date of Patent: February 19, 1980Assignee: National Petro Chemicals CorporationInventors: Louis J. Rekers, Anthony N. Speca
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Patent number: 4184028Abstract: Olefin polymerization catalysts are prepared by depositing an organophosphoryl chromium product and an aluminum compound on an inorganic support material, and heating the support material in a non-reducing atmosphere at a temperature above about 300.degree. C. up to the decomposition temperature of the support material.Type: GrantFiled: June 29, 1977Date of Patent: January 15, 1980Assignee: National Petro Chemicals CorporationInventors: Louis J. Rekers, Stanley J. Katzen, Jerome H. Krekeler
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Patent number: 4163723Abstract: A continuously operated liquid-solids separator for separating a powdered resin material suspended in water forming a slurry by permitting the resin, which is of a lower specific gravity than the water, to float or be impelled upwardly within a separator vessel or upright tank from which it is withdrawn through an outlet orifice as a thickened slurry.Type: GrantFiled: October 28, 1977Date of Patent: August 7, 1979Assignee: National Petro Chemicals CorporationInventors: Giuliano Romano, Michael A. Rismondo
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Patent number: 4155488Abstract: A plug valve adapted to meter precise quantities of material passing therethrough in which a cylindrical valve plug is rotatably mounted in a cylindrically shaped aperture in a valve body. First and second sets of radially extending inlet and outlet passageways are connected to the valve body aperture, with each inlet passageway being radially opposite a corresponding outlet passageway. Two orthogonally oriented, nonintersecting valve ports extend through the valve plug perpendicular to its axis of rotation, the ports being closely spaced from each other along the axis and with the diameter of each valve port being approximately one-half the diameter of the passageways such that one valve port connects one set of inlet and outlet passageways while the orthogonally positioned second port simultaneously connects the second set of inlet and outlet passageways.Type: GrantFiled: November 18, 1977Date of Patent: May 22, 1979Assignee: National Petro Chemicals CorporationInventor: James R. Ware
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Patent number: 4150209Abstract: Catalysts, especially for olefin polymerization are prepared by coating an aluminum compound on a selected high pore volume silica gel, and calcining the support at temperatures of from about 200.degree. to 2000.degree. F. The preferred catalyst is prepared with an inorganic support material as aforesaid, thereafter depositing an organophosphoryl chromium compound thereon, and activating the thus-treated support by heating in a non-reducing, preferably oxygen-containing, atmosphere at temperatures of from about 800.degree. to 2000.degree. F. The activated, supported catalyst composition may, but need not necessarily, be combined with a metallic and/or non-metallic reducing agent, to provide a catalyst system useful in the polymerization of 1-olefins.Type: GrantFiled: March 6, 1978Date of Patent: April 17, 1979Assignee: National Petro Chemicals CorporationInventors: Stanley J. Katzen, Louis J. Rekers
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Patent number: 4115318Abstract: An olefin polymerization catalyst is prepared by depositing a poly (di-.mu.-dihydrocarbylphosphinatohydroxyaquochromium (III)) compound or the corresponding anhydrous compound upon an inorganic support material and calcining the impregnated support material in a non-reducing atmosphere above 300.degree. C. up to the decomposition temperature of the support material to provide an activated catalyst. The catalyst exhibits high productivity and produces polymers having high melt indices.Type: GrantFiled: June 9, 1977Date of Patent: September 19, 1978Assignee: National Petro Chemicals CorporationInventor: Anthony N. Speca
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Patent number: 4100104Abstract: Catalysts, especially for olefin polymerization are prepared by coating an aluminum compound on a selected high pore volume silica gel, and calcining the support at temperatures of from about 200.degree. to 2000.degree. F. The preferred catalyst is prepared with an inorganic support material as aforesaid, thereafter depositing an organophosphoryl chromium compound thereon, and activating the thus-treated support by heating in a non-reducing, preferably oxygen-containing, atmosphere at temperatures of from about 800.degree. to 2000.degree. F. The activated, supported catalyst composition may, but need not necessarily, be combined with a metallic and/or non-metallic reducing agent, to provide a catalyst system useful in the polymerization of 1-olefins.BACKGROUND OF THE INVENTIONThe modification of silica gels for catalytic activity is known as discussed in Burwell, Chemtech, pp. 370-377 (1974).The use of chromium compounds in the polymerization of olefins is well-known. U.S. Pat. Nos.Type: GrantFiled: January 13, 1977Date of Patent: July 11, 1978Assignee: National Petro Chemicals CorporationInventors: Stanley J. Katzen, Louis J. Rekers
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Patent number: 4053565Abstract: Silica xerogels having pore volumes greater than about 2.0 cc/g., the major portion of which volumes are provided by pores having pore diameters ranging from 300 to 600 A, and surface areas ranging from 200 to 500 m.sup.2 /g. Xerogels having such cumulative pore volume, pore diameter distribution, and surface area characteristics are useful as supports for stereospecific catalysts for particle form olefin polymerization reactions effecting the production of low molecular weight, high melt index polyolefins.Type: GrantFiled: January 28, 1974Date of Patent: October 11, 1977Assignee: National Petro Chemicals CorporationInventors: Jerome H. Krekeler, William Kirch, Henri A. Aboutboul
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Patent number: 4049896Abstract: Olefin polymerization catalysts are prepared by depositing a chromium compound and an aluminum compound on an inorganic support material and heating the support material in a non-reducing atmosphere at a temperature above about 300.degree. C up to the decomposition temperature of the support material. The supported chromium and aluminum compound is then combined with a metallic and/or non-metallic reducing agent, to provide a catalyst system useful in the polymerization of 1-olefins.Type: GrantFiled: August 20, 1976Date of Patent: September 20, 1977Assignee: National Petro Chemicals CorporationInventors: Louis J. Rekers, Stanley J. Katzen, Jerome H. Krekeler
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Patent number: 3985676Abstract: Supported catalyst compositions made by incorporating preformed materials comprising the reaction product of organophosphorus compounds such as the organophosphates and organophosphites with chromium trioxide, wherein the organic moiety is a hydrocarbon radical, e.g., alkyl, aralkyl, aryl, cycloalkyl, or the like or combinations thereof. Typical supports constitute an inorganic material of high surface area, especially a high pore volume (>1.96 cc/g) silica xerogel. The catalysts are activated by heating in a dry, oxygen containing atmosphere. The catalysts are utilized alone or in conjunction with other catalytic ingredients such as organometallic and/or organo non-metallic reducing agents. Polymerizations of 1-olefins promoted with the subject catalysts proceed efficiently to products of specially adapted utility for molding, particularly to resins useful for the production of blow molded articles.Type: GrantFiled: December 16, 1974Date of Patent: October 12, 1976Assignee: National Petro Chemicals CorporationInventors: Louis J. Rekers, Stanley J. Katzen
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Patent number: 3984351Abstract: Olefin polymerization catalysts are prepared by depositing a chromium compound and an aluminum compound on an inorganic support material and heating the support material in a non-reducing atmosphere at a temperature above about 300.degree.C up to the decomposition temperature of the support material. The supported chromium and aluminum compound is then combined with a metallic and/or non-metallic reducing agent, to provide a catalyst system useful in the polymerization of 1-olefins.Type: GrantFiled: March 14, 1975Date of Patent: October 5, 1976Assignee: National Petro Chemicals CorporationInventors: Louis J. Rekers, Stanley J. Katzen, Jerome H. Krekeler
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Patent number: 3978002Abstract: An olefin polymerization catalyst comprising a silica xerogel support having a pore volume greater than about 2.0 cc/g, the major portion of which volume is provided by pores having pore diameters ranging from 300 to 600 A and a surface area ranging from 200 to 500 m.sup.2 /g, and having deposited thereon a metal-containing catalytic material, such as chromium oxide, or other metal oxide. Further, a polymerization process utilizing such a catalyst for the preparation of polyolefins having relatively low molecular weights and high melt indexes without loss of catalyst activity, especially a process for the preparation of polymers and copolymers of 1-olefins having a maximum of 8 carbon atoms in the chain and having no branching nearer the double bond than the 4-position, e.g., ethylene polymers.Type: GrantFiled: July 9, 1974Date of Patent: August 31, 1976Assignee: National Petro Chemicals CorporationInventors: Henri A. Aboutboul, William Kirch, Jerome H. Krekeler
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Patent number: RE31282Abstract: A plug valve adapted to meter precise quantities of material passing therethrough in which a cylindrical valve plug is rotatably mounted in a cylindrically shaped aperture in a valve body. First and second sets of radially extending inlet and outlet passageways are connected to the valve body aperture, with each inlet passageway being radially opposite a corresponding outlet passageway. Two orthogonally oriented, nonintersecting valve ports extend through the valve plug perpendicular to its axis of rotation, the ports being closely spaced from each other along the axis and with the diameter of each valve port being approximately one-half the diameter of the passageways such that one valve port connects one set of inlet and outlet passageways while the orthogonally positioned second port simultaneously connects the second set of inlet and outlet passageways.Type: GrantFiled: March 26, 1981Date of Patent: June 21, 1983Assignee: National Petro Chemicals CorporationInventor: James R. Ware