Patents by Inventor Umberto Zucchini
Umberto Zucchini 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: 5922632Abstract: Catalysts component of the (co)polymerization of alpha-olefins CH.sub.2 .dbd.CHR, wherein R is hydrogen or an alkyl radical having from 1 to 8 carbon atoms, comprising a product of the composition:VCL.sub.y.z(b)wherein (b) represents an organic compound selected from alkyl, aryl and acyl halides, y is a number higher than 2 and lower than 4, and preferably comprised between 2.5 and 3.5 and z is a number higher than zero and lower than or equal to 2, and preferably between 0.002 and 1. Components can be obtained as products of the reaction, carried out at temperatures higher than 10.degree. C., between VCl.sub.4 and the compound (b). Particularly preferred among compounds (b) are benzoyl chloride, p-methoxybenzoyl chloride and p-chloro benzoyl chloride. From the components of the invention, either supported or not, catalysts having high activity particularly useful for the production of ethylene polymers showing broad molecular weight distribution can be prepared.Type: GrantFiled: September 25, 1997Date of Patent: July 13, 1999Assignee: Montell Technology Company b.v.Inventors: Umberto Zucchini, deceased, Tiziano Dall'Occo, Antonella Angelini
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Patent number: 5532326Abstract: Process for preparing elastomeric copolymers of ethylene with .alpha.-olefins CH.sub.2 .dbd.CHR, optionally containing minor proportions of a diene, characterized by the use during the polymerization of a catalyst comprising the reaction product of:(I) a solid component comprising VCl.sub.3 supported on a magnesium dihalide in spherical or spheroidal shape, in active form;(II) an alkyaluminum compound;(III) optionally a halohydrocarbon.VCl.sub.3 is precipitated on said magnesium dihalide by heating VCl.sub.4 solutions in inert hydrocarbon solvents.Type: GrantFiled: November 14, 1994Date of Patent: July 2, 1996Assignee: Montell Technology Company bvInventors: Tiziano Dall'Occo, Floriano Guglielmi, Umberto Zucchini, deceased
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Patent number: 5500397Abstract: Solid catalyst component for the polymerization of ethylene including the product of the reaction between:1) the product obtained by reacting:1A) a halide, halogen alcoholate or alcoholate of titanium, vanadium or zirconium;1B) a small quantity of water, and optionally1C) a compound or composition capable of substituting, in compound 1A, one or more alkoxy groups with a halogen atom; and2) a complex having general formula:MgX.sub.2 .multidot.nAlRX.sub.2 .multidot.pAlX.sub.3where X is chlorine or bromine; R is a hydrocarbon radical containing from 1 to 20 carbon atoms; n is a number from 1 to 4; p is a number from 0 to 1, and n+p from 1 to 4;the catalyst component being in the form or particles having a diameter lower than or equal to 20 micrometers, and an average diameter lower than or equal to 10 micrometers.Type: GrantFiled: January 13, 1994Date of Patent: March 19, 1996Assignee: Montell North America Inc.Inventors: Illaro Cuffiani, Umberto Zucchini, deceased
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Patent number: 5369186Abstract: Disclosed are polymers and copolymers of CH.sub.2 .dbd.CHR alpha olefins where R is hydrogen or a 1-6 carbon atom alkyl radical, containing in the chain from 0.1 to 40 mole % of monomeric units ##STR1## where X is selected from the group consisting of (CH.sub.2).sub.r CH.sub.2 CH.sub.2 Y ##STR2## where r=0-10, Y is a halogen atom, R.sup.1 is a hydrocarbon radical with 1-18 carbon atoms.Type: GrantFiled: November 12, 1991Date of Patent: November 29, 1994Assignee: Himont IncorporatedInventors: Maurizio Galimberti, Umberto Giannini, Romano Mazzocchi, Enrico Albizzati, Umberto Zucchini
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Patent number: 5300470Abstract: Solid catalyst components for the preparation of catalysts capable of producing polymers and copolymers of ethylene with ultra high molecular weight are obtained in the form of particles having an average diameter of less than 10 micrometers, by way of reaction, in the presence of H.sub.2 O, between:1) a liquid obtained by reacting:A) a titanium compound containing at least one Ti--OR bond, where R is a C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.20 cycloalkyl, or C.sub.6 -C.sub.20 aryl radical; withB) a magnesium compound selected from the group consisting of: halides; compounds comprising at least one --OR or--OCOR group bonded to the magnesium, where R is a C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.20 cycloalkyl, or C.sub.6 -C.sub.20 aryl radical; organometallic compounds; products of the reaction between the above mentioned compounds and electron-donor compounds; and2) a compound or composition capable of halogenating and optionally reducing (A).Type: GrantFiled: July 15, 1992Date of Patent: April 5, 1994Assignee: Himont IncorporatedInventors: Illaro Cuffiani, Umberto Zucchini
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Patent number: 5278118Abstract: Catalysts for the preparation of copolymers of ethylene and/or alpha-olefins and optionally dienes, are obtained by reacting an Al-alkyl with a solid catalytic component comprising:(A) a magnesium compound containing at least an Mg-halogen bond;(B) a halogenated compound of at least partly trivalent Ti or V, containing at least a Ti--OR or V--OR bond, wherein the Mg/Ti(V), halogen/Ti(V), halogen/Mg and OR/Ti(V) atomic ratios are within determined ranges; and(C) an electron-donor compound.Elastomeric copolymers endowed with improved tension set values are obtained with said catalysts.Type: GrantFiled: April 8, 1992Date of Patent: January 11, 1994Assignee: Ausimont, S.p.A.Inventors: Illaro Cuffiana, Roberto Fabbri, Gian F. Margelli, Umberto Zucchini
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Patent number: 5219961Abstract: Catalytic components for copolymerizing ethylene with alpha-olefins, or alpha-olefins with one another, and possibly with a diene as a termonomer, suitable for producing saturated and unsaturated elastomeric copolymers are disclosed. The catalytic components are compounds obtained by the reaction of:(1) a magnesium compound having the formula:R'.sub.y MgX.sub.n (OR).sub.2-n(wherein R, R'=alkyl, cycloalkyl, aryl; X=Cl, Br; n is from 0 to 1.8, y is from 0 to 1, and n+y=2), or(2) a Mg-alcohol adduct;with a titanium compound having the formula:Ti(OR).sub.Z X.sub.4-Z'wherein X and R are as defined above and Z is from 0 to 1, the compounds being charcterized by a Mg/Ti ratio of from 0.5 to 50 and an OR/Ti ratio of from 0.7 to 10. The copolymers produced using these catalytic components are endowed with improved tension-set characteristics in the vulcanized state.Type: GrantFiled: December 11, 1991Date of Patent: June 15, 1993Assignee: Ausimont S.p.A.Inventors: Umberto Zucchini, Viviano Banzi, Illaro Cuffiani
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Patent number: 5084540Abstract: Crystalline copolymers of ethylene and alpha-olefins CH.sub.2 .dbd.CHR in which R is an alkyl group having 2 to 8 carbon atoms, containing 0.5 to 3% by moles of polymerized alpha-olefin and having a density lower than 0.945 g/cc are obtained by polymerizing, in the gas phase, mixtures of ethylene and the alpha-olefins in contact with catalysts prepared from (1) Ti compounds supported on Mg halides and (2) organometallic compounds, which are active in the polymerization of ethylene but exhibit little, if any, activity in the homo- or copolymerization of the alpha-olefins.Type: GrantFiled: November 20, 1990Date of Patent: January 28, 1992Assignee: Montedison S.p.A.Inventors: Enrico Albizzati, Umberto Zucchini, Arrigo Soverini, Illaro Cuffiani
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Patent number: 4886770Abstract: Catalysts for the preparation of copolymers of ethylene and/or alpha-olefins and optionally dienes, are obtained by reacting an Al-alkyl with a solid catalytic component comprising:(A) a magnesium compound containing at least an Mg-halogen bond;(B) a halogenated compound of at least partly trivalent Ti or V, containing at least a Ti-OR or V-OR bond, wherein the Mg/Ti(V), halogen/Ti(V), halogen/Mg and OR/Ti(V) atomic ratios are within determined ranges; and(C) an electron-donor compound.Elastomeric copolymers endowed with improved tension set values are obtained with said catalysts.Type: GrantFiled: September 30, 1987Date of Patent: December 12, 1989Assignee: AusimontInventors: Illaro Cuffiani, Roberto Fabbri, Gian F. Margelli, Umberto Zucchini
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Patent number: 4695558Abstract: Disclosed are catalysts for the polymerization of ethylene and of mixtures thereof with olefins, comprising the product obtained by reacting the following components:(a) an Al-alkyl compound;(b) an electron-donor compound containing at least a nitrogen atom, said compound being reactive towards MgCl.sub.2, but not towards Al-triethyl; and(c) the reaction product between a titanium compound containing at least a titanium-halogen bond and an anhydrous magnesium halide.The obtained (co)polymers have a very narrow molecular weight distribution which renders them particularly suitable for some applications, such as injection molding.Type: GrantFiled: March 19, 1985Date of Patent: September 22, 1987Assignee: Montedison S.p.A.Inventors: Enrico Albizzati, Enrico Pettenati, Umberto Zucchini, Illaro Cuffiani
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Patent number: 4517307Abstract: Components of catalysts for the polymerization of ethylene and of mixtures thereof with other olefins, in the form of emulsions or dispersions, in an inert liquid medium or in an inert gas phase of a liquid phase, comprising a compound of a metal of Groups IV to VI inclusive, of the Mendelyeev Periodic System, or a composition containing such a compound of the Mendelyeev Periodic System, which compound or composition is immiscible with aliphatic hydrocarbons, or which components are obtained from emulsions or dispersions, in an inert liquid medium or in gas phase, of a precursor of the catalyst component which, in the liquid state, is immiscible with the aliphatic hydrocarbons.An object of this invention is to provide new catalyst components for use in the polymerization of ethylene and of mixtures thereof with olefins and the catalysts obtained therefrom.Type: GrantFiled: December 22, 1982Date of Patent: May 14, 1985Assignee: Montedison S.p.A.Inventors: Illaro Cuffiani, Paolo Longi, Umberto Zucchini, Gianni Pennini
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Patent number: 4472520Abstract: New olefin polymerization catalysts are disclosed which are prepared by mixing(A) the product obtained by contacting(1) a halogen-containing, or a halogen free, oxygen-containing organic compound of Ti, V or Zr, with(2) a hydrocarbon-insoluble solid product containing at least metal M and halogen and resulting from decomposition of a complex having the formulaMX.sub.2.nAlRX.sub.2.pAlX.sub.3(I)to M dihalide, or to a product containing M dihalide. In formula (I):M is Mg, Mn or Ca;X is chlorine or bromine in the case of MX.sub.2 and AlX.sub.3, and chlorine, bromine or alkoxy group in the case of AlRX.sub.2 ;R is a hydrocarbon radical containing from 1 to 20 carbon atoms;n is a number from 1 to 4, inclusive;p is a number from 0 to 1, inclusive;1.ltoreq.n+p.ltoreq.4; with(B) an organometallic compound of a metal belonging to Groups I-III of the Mendelyeev Periodic Table.In the decomposition product of formula (I) M in the M dihalide has the same significance as M in formula (I).Type: GrantFiled: September 9, 1982Date of Patent: September 18, 1984Assignee: Montedison S.p.A.Inventors: Umberto Zucchini, Illaro Cuffiani
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Patent number: 4390454Abstract: There are disclosed components of catalysts for polymerizing ethylene and mixtures of ethylene with alpha-olefins comprising the reaction product of (A) a magnesium compound, such as Mg-chloride, Mg-alcoholate or a Grignard compound, with (B) a titanium, vanadium or zirconium compound having at least two metal-oxygen bonds, such as a tetra-alcoholate, and with (C) a halogenated compound of metals of B, such as Ti tetrachloride.According to an aspect of the invention, the reaction product (A)+(B), before being reacted with (C), is treated with a silicum compound having a halogenating and/or reducing action.The catalysts according to the invention are suitable for obtaining ethylene polymers having a broad distribution of molecular weights.Type: GrantFiled: July 23, 1981Date of Patent: June 28, 1983Assignee: Montedison S.p.A.Inventors: Illaro Cuffiani, Paolo Galli, Umberto Zucchini
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Catalyst-forming components and catalysts prepared therefrom useful in the polymerization of olefins
Patent number: 4305840Abstract: There are disclosed new catalyst-forming components and catalysts prepared therefrom which, used in the polymerization of olefins, result in high yields of polyolefins having a narrow molecular weight distribution and which do not require special purifying after-treatments for the removal of catalyst residues. More particularly, the new catalyst components and catalysts prepared from them are useful in the polymerization of ethylene or alpha-olefins CH.sub.2 .dbd.CHR, in which R is an alkyl or aryl radical of from 1 to 8 carbon atoms, or mixtures of ethylene with said alpha-olefins.Type: GrantFiled: October 25, 1979Date of Patent: December 15, 1981Assignee: Montedison S.p.A.Inventors: Umberto Zucchini, Gianni Pennini, Illaro Cuffiani -
Patent number: 4218339Abstract: There are disclosed catalyst components for polymerizing olefins, consisting of the product obtained by successively reacting(A) a Mg compound (halide, alcoholate, haloalcoholate, carboxylate, oxyde, hydroxyde, salt of an inorganic oxygen containing acid, Grignard reagent or reaction product of a Grignard reagent with a silicon compound), optionally in the form of a complex with an electron-donor compound, with(B) a compound having general formula [MO.sub.x (OR).sub.y ].sub.n, wherein M=Ti, V or Zr, R=an alkyl, an aryl or a cycloalkyl containing 1 to 20 carbon atoms, x may be zero, y is an integer not lower than 2, 2x+y=a valence of M, and n=an integer from 1 to 6 (inclusive), and with(C) a compound, other than the aluminium halides, exerting on component (B) a halogenating action and a reducing action, or a mixture of a halogenating compound with a reducing substance.Type: GrantFiled: May 23, 1978Date of Patent: August 19, 1980Assignee: Montedison S.p.A.Inventors: Umberto Zucchini, Illaro Cuffiani
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Patent number: 4089808Abstract: New olefin polymerization catalysts are disclosed which are prepared by mixing(A) the product obtained by contacting(1) a halogen-containing, or a halogen free, oxygen-containing organic compound of Ti, V or Zr, with(2) a hydrocarbon-insoluble solid product containing at least metal M and halogen and resulting from decomposition of a complex having the formula (I) MX.sub.2.nAlRX.sub.2.pAlX.sub.3 to M dihalide, or to a product containing M dihalide.In formula (I):M is Ba, Ca, Mg or Mn;X is chlorine or bromine in the case of MX.sub.2 and AlX.sub.3, and chlorine, bromine or alkoxy group in the case of AlRX.sub.2 ;R is a hydrocarbon radical containing from 1 to 20 carbon atoms;n is a number from 1 to 4, inclusive;p is a number from 0 to 1, inclusive;1.ltoreq.n + p.ltoreq.4; with(B) an organometallic compound of a metal belonging to Groups I-III of the Mendelyeev Periodic Table,In the decomposition product of formula (I) M in the M dihalide has the same significance as M in formula (I).Type: GrantFiled: June 11, 1976Date of Patent: May 16, 1978Assignee: Montedison S.p.A.Inventors: Umberto Zucchini, Illaro Cuffiani