Patents by Inventor Pier C. Barbe
Pier C. Barbe 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: 5539067Abstract: Disclosed are catalysts for the polymerization of alpha-olefins which comprise the reaction product of:(a) an Al alkyl compound;(b) a silicon compound containing at least a Si--OR or Si--OCOR or Si--NR.sub.2 bond, R being a hydrocarbyl radical;(c) a solid comprising, as essential support, a Mg dihalide in active form and, supported thereon, a Ti halide or a halo-Ti-alcoholate and a particular, selected type of electron-donor compound.Type: GrantFiled: May 12, 1995Date of Patent: July 23, 1996Assignee: Montedison S.p.A.Inventors: Sandro Parodi, Roberto Nocci, Umberto Giannini, Pier C. Barbe', Umerto Scata'
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Patent number: 5139985Abstract: Catalyst components for the polymerization of olefins comprising a titanium or vanadium compound supported on a porous particulate polymeric support which particles have a porosity greater than 0.3 cc/g and a pore distribution such that at least 40% of the pores have radius greater than 150 .ANG..The catalyst components are prepared by impregnating the polymeric support with a solution of the Ti or V compound and evaporating the solvent.Type: GrantFiled: February 20, 1991Date of Patent: August 18, 1992Assignee: Himont IncorporatedInventors: Pier C. Barbe', Luciano Noristi, Gianni Pennini, Enrico Albizzati
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Patent number: 4980329Abstract: Disclosed is a component for a catalyst for the polymerization of alpha-olefins to stereoregular polymers having narrow molecular weight distribution. The product is formed by the reaction of a solid catalyst-forming component comprising (1) a Ti compound having at least one Ti-halogen bond and (2) optionally, an electron-donor compound, supported on an anhydrous Mg dihalide in active form, with certain amounts of an organic compound (AH) containing at least one active hydrogen atom, in the presence of a liquid medium which is inert with respect to the Ti compound and the other components of the catalyst component, and which has a dielectric constant greater than 2 at 20.degree. C.Catalysts comprising the reaction product of the solid catalyst component prepared as above described, with an Al-alkyl compound and an electron-donor compound are also disclosed.Type: GrantFiled: May 15, 1989Date of Patent: December 25, 1990Assignee: Himont IncorporatedInventors: Pier C. Barbe, Enrico Albizzati, Umberto Giannini, Giovanni Baruzzi, Luciano Noristi
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Patent number: 4978648Abstract: Catalysts for the polymerization of olefins, particularly alpha-olefin of the formula CH.sub.2 .dbd.CHR in which R is an alkyl radical with 1-6 carbon atoms or an aryl radical, obtained by the reaction of:(a) an Al-alkyl compound;(b) an ether containing at least two ether groups which can form complexes with anhydrous magnesium dichloride, under standard conditions of reaction, in an amount less than 60 mmol per 100 g Mg dichloride; and(c) a solid catalyst component comprising an anhydrous magnesium dihalide in active form and having supported thereon a titanium compound containing at least a Ti-halogen bond and an electron-donor compound which is at least 70 mole % extractable with Al-triethyl, under standard conditions of extraction, component wherein the solid, after extraction, has a surface area of more than 20 m.sup.2 g.Type: GrantFiled: September 27, 1989Date of Patent: December 18, 1990Assignee: Himont IncorporatedInventors: Pier C. Barbe, Luciano Noristi, Raimondo Scordamaglia, Luisa Barino, Enrico Albizzati, Umberto Giannini, Giampiero Morini
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Patent number: 4971937Abstract: Solid catalyst components for the polymerization of olefins and modified with electron-donor compounds, comprising a titanium halide supported on a magnesium dihalide in active form and containing as an electron-donor compound a di- or other polyether having specific reactivity characteristics towards MgCl.sub.2 and TiCl.sub.4.Type: GrantFiled: September 27, 1989Date of Patent: November 20, 1990Assignee: Himont IncorporatedInventors: Enrico Albizzati, Pier C. Barbe, Luciano Noristi, Raimondo Scordamaglia, Luisa Barino, Umberto Giannini, Giampiero Morini
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Patent number: 4904628Abstract: Catalysts for the polymerization of alpha-olefins, which comprise the product of the reaction between:(a) a metallorganic compound of Al;(b) an electron-donor compound reactive towards MgCl.sub.2 but which is not completely complexed with AlEt.sub.3, at the equivalent point of a potentiometric titration under standard conditions;(c) a solid comprising a halogenated Ti compound and an electron-donor belonging to particular classes of compounds and being extractable with AlEt.sub.3 for at least 70% by mols from the solid, the surface area of which after extraction is higher than 20 m.sup.2 /g.The present invention refers to new supported components of catalysts for the polymerization of olefins CH.sub.2 .dbd.CHR, in which R is an alkyl with 1-4 carbon atoms or an aryl, and of mixtures of such olefins with each other and/or with ethylene, and to the catalysts obtained from such components.Type: GrantFiled: January 28, 1988Date of Patent: February 27, 1990Assignees: Montedison S.p.A., Mitsui Petrochemical Ind.Inventors: Enrico Albizzati, Sandro Parodi, Pier C. Barbe
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Patent number: 4529716Abstract: Catalyst components for the stereoregular polymerization of alpha-olefins, comprising a Ti halide and an electron-donor compound supported on an anhydrous magnesium dihalide and obtained by means of non-extractive treatments, with liquids having a dielectric constant at 20.degree. C. equal to or higher than 2, of compositions comprising an anhydrous Mg dihalide, the crystallites of which have an average size lower than 300 .ANG..The present invention refers to new catalyst components and the catalysts obtained therefrom for the polymerization of alpha-olefins Ch.sub.2 .dbd.CHR, wherein R is an alkyl radical with 1-4 C atoms or an aryl radical, and of mixtures of said alpha-olefins with minor amounts of ethylene.Type: GrantFiled: September 9, 1983Date of Patent: July 16, 1985Assignee: Montedison S.p.A.Inventors: Viviano Banzi, Pier C. Barbe, Luciano Noristi
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Patent number: 4522930Abstract: Catalysts for the polymerization of alpha-olefins, which comprise the product of the reaction between:(a) a metalorganic compound of Al;(b) an electron-donor compound reactive towards MgCl.sub.2 but which is not completely complexed with AlEt.sub.3, at the equivalent point of a potentiometric titration under standard conditions;(c) a solid comprising a halogenated Ti compound and an electron-donor belonging to particular classes of compounds and being extractable with AlEt.sub.3 for at least 70% by mols from the solid, the surface area of which after extraction is higher than 20 m.sup.2 /g.The present invention refers to new supported components of catalysts for the polymerization of olefins CH.sub.2 .dbd.CHR, in which R is an alkyl with 1-14 carbon atoms or an aryl, and of mixtures of such olefins with each other and/or with ethylene, and to the catalysts obtained from such components.Type: GrantFiled: February 10, 1983Date of Patent: June 11, 1985Assignees: Montedison S.p.A., Mitsui Petrochemical Ind.Inventors: Enrico Albizzati, Sandro Parodi, Pier C. Barbe
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Patent number: 4473660Abstract: Catalysts for the polymerization of olefins, comprising the product of the reaction between:(a) an Al-alkyl compound;(b) an electron-donor compound capable of reacting with MgCl.sub.2 but which is not completely complexed with Al-triethyl at the equivalent point of a potentiometric titration under standard conditions and belonging to particular classes of compounds; and(c) a solid comprising a Ti compound having at least a Ti-halogen bond and an electron-donor compound belonging to particular classes of esters, both supported on a Mg halide in active form.Type: GrantFiled: February 10, 1983Date of Patent: September 25, 1984Assignee: Montedison S.p.A.Inventors: Enrico Albizzati, Sandro Parodi, Pier C. Barbe
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Patent number: 4331561Abstract: New highly active and highly stereospecific catalysts for the polymerization of alpha-olefins are disclosed, the starting components of which are(a) an organometallic-compound of Al free from halogen atoms bound directly to the Al atom;(b) an electron-donor compound (such as a Lewis base) in an amount such that 15% to 100% of the organometallic Al compound (a) is combined with the electron-donor compound; and(c) a solid component comprising, at least on surface, the reaction product of a halogen. Mg compound with a tetravalent Ti compound and with an electron-donor compound, the molar ratio electron-donor compound/Ti being higher than 0.2, and the molar ratio halogen atoms/Ti being higher than 4.Processes for polymerizing the alpha-olefins and mixtures thereof with ethylene in contact with the new catalysts are also disclosed.Type: GrantFiled: January 28, 1980Date of Patent: May 25, 1982Assignees: Montedison S.p.A., Mitsui Petrochemical Industries, Ltd.Inventors: Luciano Luciani, Norio Kashiwa, Pier C. Barbe, Akinori Toyota
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Patent number: 4315835Abstract: New components of catalysts for polymerizing alpha-olefins, and the catalysts formed from the new components are disclosed. Said catalyst components are prepared by reacting Ti compounds with a carrier in the form of spheroidal particles of specified characteristics and which consists of or comprises an Mg compound, or mixture of Mg compounds of the formulaX.sub.n Mg(OR).sub.2-n (I)in which 0.ltoreq.n.ltoreq.2, R is an alkyl, aryl, cycloalkyl radical containing from 1 to 20 carbon atoms, X is halogen or a group OR' in which R' is an alkyl, aryl or cycloalkyl radical containing from 1 to 20 carbon atoms and is the same or different from R in formula (I).Type: GrantFiled: May 7, 1980Date of Patent: February 16, 1982Assignee: Montedison S.p.A.Inventors: Umberto Scata', Luciano Luciani, Pier C. Barbe'
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Patent number: 4226741Abstract: New highly active and highly stereospecific catalysts for the polymerization of alpha-olefins are disclosed, the starting components of which are(a) an organometallic-compound of Al free from halogen atoms bound directly to the Al atom;(b) an electron-donor compound (such as a Lewis base) in an amount such that 15% to 100% of the organometallic Al compound (a) is combined with the electron-donor compound; and(c) a solid component comprising, at least on the surface, the reaction product of a halogenated Mg compound with a tetravalent Ti compound and with an electron-donor compound, the molar ratio electron-donor compound/Ti being higher than 0.2, and the molar ratio halogen atoms/Ti being higher than 4.Processes for polymerizing the alpha-olefins and mixtures thereof with ethylene in contact with the new catalysts are also disclosed.Type: GrantFiled: August 17, 1978Date of Patent: October 7, 1980Assignees: Montedison S.p.A., Mitsui Petrochemical Industries, Ltd.Inventors: Luciano Luciani, Norio Kashiwa, Pier C. Barbe, Akinori Toyota
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Patent number: 4220554Abstract: New components of catalysts for polymerizing alpha-olefins, and the catalysts formed from the new components are disclosed. Said catalyst components are prepared by reacting Ti compounds with a carrier in the form of spheroidal particles of specified characteristics and which consists of or comprises an Mg compound, or mixture of Mg compounds of the formulaX.sub.n Mg(OR).sub.2-n (I)in which 0.ltoreq.n.ltoreq.2, R is an alkyl, aryl, cycloalkyl radical containing from 1 to 20 carbon atoms, X is halogen or a group OR' in which R' is an alkyl, aryl or cycloalkyl radical containing from 1 to 20 carbon atoms and is the same or different from R in formula (I).Type: GrantFiled: May 24, 1978Date of Patent: September 2, 1980Assignee: Montedison S.p.A.Inventors: Umberto Scata, Luciano Luciani, Pier C. Barbe
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Patent number: RE31099Abstract: New catalyst components comprising compounds containing titanium, magnesium and halogens, and catalysts for polymerizing olefins obtained by mixing said components with organometallic Al compounds are disclosed.Type: GrantFiled: September 16, 1980Date of Patent: December 7, 1982Assignee: Montedison S.p.A.Inventors: Umberto Scata', Luciano Luciani, Pier C. Barbe'