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).

  • Patent number: 5539067
    Abstract: 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: Grant
    Filed: May 12, 1995
    Date of Patent: July 23, 1996
    Assignee: Montedison S.p.A.
    Inventors: Sandro Parodi, Roberto Nocci, Umberto Giannini, Pier C. Barbe', Umerto Scata'
  • Patent number: 5139985
    Abstract: 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: Grant
    Filed: February 20, 1991
    Date of Patent: August 18, 1992
    Assignee: Himont Incorporated
    Inventors: Pier C. Barbe', Luciano Noristi, Gianni Pennini, Enrico Albizzati
  • Patent number: 4980329
    Abstract: 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: Grant
    Filed: May 15, 1989
    Date of Patent: December 25, 1990
    Assignee: Himont Incorporated
    Inventors: Pier C. Barbe, Enrico Albizzati, Umberto Giannini, Giovanni Baruzzi, Luciano Noristi
  • Patent number: 4978648
    Abstract: 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: Grant
    Filed: September 27, 1989
    Date of Patent: December 18, 1990
    Assignee: Himont Incorporated
    Inventors: Pier C. Barbe, Luciano Noristi, Raimondo Scordamaglia, Luisa Barino, Enrico Albizzati, Umberto Giannini, Giampiero Morini
  • Patent number: 4971937
    Abstract: 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: Grant
    Filed: September 27, 1989
    Date of Patent: November 20, 1990
    Assignee: Himont Incorporated
    Inventors: Enrico Albizzati, Pier C. Barbe, Luciano Noristi, Raimondo Scordamaglia, Luisa Barino, Umberto Giannini, Giampiero Morini
  • Patent number: 4904628
    Abstract: 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: Grant
    Filed: January 28, 1988
    Date of Patent: February 27, 1990
    Assignees: Montedison S.p.A., Mitsui Petrochemical Ind.
    Inventors: Enrico Albizzati, Sandro Parodi, Pier C. Barbe
  • Patent number: 4529716
    Abstract: 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: Grant
    Filed: September 9, 1983
    Date of Patent: July 16, 1985
    Assignee: Montedison S.p.A.
    Inventors: Viviano Banzi, Pier C. Barbe, Luciano Noristi
  • Patent number: 4522930
    Abstract: 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: Grant
    Filed: February 10, 1983
    Date of Patent: June 11, 1985
    Assignees: Montedison S.p.A., Mitsui Petrochemical Ind.
    Inventors: Enrico Albizzati, Sandro Parodi, Pier C. Barbe
  • Patent number: 4473660
    Abstract: 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: Grant
    Filed: February 10, 1983
    Date of Patent: September 25, 1984
    Assignee: Montedison S.p.A.
    Inventors: Enrico Albizzati, Sandro Parodi, Pier C. Barbe
  • Patent number: 4331561
    Abstract: 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: Grant
    Filed: January 28, 1980
    Date of Patent: May 25, 1982
    Assignees: Montedison S.p.A., Mitsui Petrochemical Industries, Ltd.
    Inventors: Luciano Luciani, Norio Kashiwa, Pier C. Barbe, Akinori Toyota
  • Patent number: 4315835
    Abstract: 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: Grant
    Filed: May 7, 1980
    Date of Patent: February 16, 1982
    Assignee: Montedison S.p.A.
    Inventors: Umberto Scata', Luciano Luciani, Pier C. Barbe'
  • Patent number: 4226741
    Abstract: 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: Grant
    Filed: August 17, 1978
    Date of Patent: October 7, 1980
    Assignees: Montedison S.p.A., Mitsui Petrochemical Industries, Ltd.
    Inventors: Luciano Luciani, Norio Kashiwa, Pier C. Barbe, Akinori Toyota
  • Patent number: 4220554
    Abstract: 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: Grant
    Filed: May 24, 1978
    Date of Patent: September 2, 1980
    Assignee: Montedison S.p.A.
    Inventors: Umberto Scata, Luciano Luciani, Pier C. Barbe
  • Patent number: RE31099
    Abstract: 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: Grant
    Filed: September 16, 1980
    Date of Patent: December 7, 1982
    Assignee: Montedison S.p.A.
    Inventors: Umberto Scata', Luciano Luciani, Pier C. Barbe'