Patents by Inventor Umberto Scata?
Umberto Scata? 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: 6777508Abstract: 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 one Si—OR or Si—OCOR or Si—NR2 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 type of electron donor compound. The present invention refers to new supported components of catalysts for the polymerization of CH2═CHR olefins wherein R is an alkyl radical with 1 to 4 carbon atoms, or an aryl radical, and mixtures of said olefins with ethylene and the catalysts obtained from said components.Type: GrantFiled: August 17, 1994Date of Patent: August 17, 2004Assignee: Basell Poliolefine Italia S.p.A.Inventors: Sandro Parodi, Roberto Nocci, Umberto Giannini, Pier Camillo Barbe′, Umberto Scata′
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Patent number: 6515085Abstract: Catalyst-forming components and catalysts for the polymerization of olefins based on said components are disclosed. The catalysts 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—NR2 bond, R being a hydrocarbyl radical; and (c) a solid comprising, as essential support, a Mg dihalide in active form and, supported thereon, a Ti halide or a halo-Ti-alcoholate or said halogenated Ti compound and a silicon compound as defined in (b) in a molar ratio with the supported Ti compound from 1.0 mole to 5 moles of silicon compound per mole of Ti compound. The present invention refers to new supported components of catalysts for the polymerization of CH2═CHR olefins wherein R is an alkyl radical with 1 to 4 carbon atoms, or an aryl radical, and mixtures of said olefins with ethylene, and to the catalysts obtained from said components.Type: GrantFiled: January 10, 1995Date of Patent: February 4, 2003Assignee: Basell Poliolefine Italia S.p.A.Inventors: Sandro Parodi, Roberto Nocci, Umberto Giannini, Pier Camillo Barbe', Umberto Scata'
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Patent number: 6194342Abstract: The present invention relates to supported 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 one Si—OR or Si—OCOR or Si—NR2 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 type of electron donor compound. The present invention also relates to supported catalyst components.Type: GrantFiled: June 6, 1995Date of Patent: February 27, 2001Assignee: Montell Technology Company BVInventors: Sandro Parodi, Roberto Nocci, Umberto Giannini, Pier Camillo Barbe′, Umberto Scata′
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Patent number: 5618771Abstract: 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: June 6, 1995Date of Patent: April 8, 1997Assignee: Montell Technology Company B.V.Inventors: Sandro Parodi, Roberto Nocci, Umberto Giannini, Pier Camillo Barbe, Umberto Scata
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Patent number: 4464478Abstract: Catalyst-forming components are prepared from(a) a halogenated Ti compound containing at least a Ti-halogen bond;(b) an electron-donor compound free of active hydrogen atoms;and(c) the solid product of the reaction between at least one electron-donor compound containing active hydrogen atoms and a Mg dihalide or a complex thereof with an electron-donor compound free of active hydrogen atoms, obtained by decomposing organic Mg compounds containing at least one Mg-R or Mg-OR group, in which R is an alkyl, aryl, cycloalkyl or alkenyl radical having 1 to 20 carbon atoms, by means of a halogenating agent different from (a).Catalysts for polymerizing olefins and prepared by mixing the aforesaid catalyst-forming components with an organometallic compound of Al are also disclosed.Type: GrantFiled: September 30, 1982Date of Patent: August 7, 1984Assignee: Montedison S.p.A.Inventors: Umberto Scata, Enrico Albizzati, Enzo Giannetti
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Patent number: 4395360Abstract: Catalyst components for the polymerization of olefins are disclosed. Said components comprise the solid product of the reaction of a halogenated Ti compound and of an electron-donor compound not containing active H atoms with the solid product of the reaction between an electron-donor compound containing active H atoms and a Mg dihalide obtained by decomposition, with halogenating agents other than the above halogenated Ti compound, of product (d) obtained from the reaction between an organometallic Mg compound of formula R.sub.m MgX.sub.n is which R is a hydrocarbon or --OR group, X is halogen or a group R, OR, or COX' (X' being halogen), 0<m=2, 0<n<2 and m+n is 2; and a Si compound selected from polysiloxanes, hydropolysiloxanes, silanols and polysilanols.Type: GrantFiled: April 21, 1981Date of Patent: July 26, 1983Assignee: Montedison S.p.A.Inventors: Enrico Albizatti, Enzo Giannetti, Umberto Scata
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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: 4263169Abstract: There are disclosed new catalyst-forming components obtained by reacting at least the following substances:(a) a halogenated Ti compound containing at least one Ti-halogen bond;(b1) a support an essential constituent of which is a mixture of an oxygenated Mg compound with an adduct between a Mg dihalide and at least one electron-donor compound and/or with the product of de composition of said adduct containing Mg dihalide; and/or(b2) the product obtained by treating an oxygenated Mg compound with an electron-donor compound.Also disclosed are catalysts prepared from said new catalyst-forming components, as is use of the catalysts in the polymerization of olefins, more particularly olefins CH.sub.2 .dbd.CHR in which R is an alkyl or aryl radical having 1-8 carbon atoms, of mixtures of said olefins and of mixtures thereof with ethylene.Type: GrantFiled: April 11, 1979Date of Patent: April 21, 1981Assignee: Montedison S.p.A.Inventors: Umberto Scata, Giuliano Cecchin
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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: 4115319Abstract: 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 17, 1976Date of Patent: September 19, 1978Assignee: Montedison S.p.A.Inventors: Umberto Scata, Luciano Luciani, Pier Camillo 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'