Patents by Inventor Umberto Giannini
Umberto Giannini 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: 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: 5508245Abstract: Spherical components of catalysts for the polymerization of olefins comprising:(a) a vanadium compound selected from the compounds of formula VOX.sub.2 Y or VX.sub.n Y.sub.n-4n, where X is Cl or Br and Y is Cl, Br OR or NR.sup.I.sub.2(b) MgCl.sub.2 in spherical form.Said components have an average diameter greater than 1 .mu.m, a surface area of at least 10 m.sup.2 /g, a porosity of at least 0.1 g/cm.sup.3 and an X-ray spectrum having particular characteristics.Type: GrantFiled: November 20, 1992Date of Patent: April 16, 1996Assignees: Montell Technology Company bv, Montell North America Inc.Inventors: Giampiero Morini, Enrico Albizzati, Umberto Giannini, Matteo Nicolini
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Patent number: 5468704Abstract: Disclosed is a catalyst for the polymerization of olefins, which includes the product of the reaction between an Al-alkyl compound and a solid catalyst component containing a magnesium halide in active form, a titanium compound and an electron-donor selected from the 1,3-diketones of formula: ##STR1## wherein the radicals R are the same or different, the radicals R.sup.I are the same or different, and R and R.sup.I are C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.20 cycloalkyl, C.sub.6 -C.sub.12 aryl, C.sub.7 -C.sub.20 arylalkyl or alkylaryl radicals or hydrogen, with the proviso that at least one of the R radicals is not hydrogen and can be bonded with the other R radical to form a cyclic structure, and at least one of the R.sup.I radicals, which are not bonded to one another to form a cyclic structure, is a branched alkyl, cycloalkyl or aryl radical, or is bonded to one or both R radicals to form a cyclic structure.Type: GrantFiled: September 30, 1994Date of Patent: November 21, 1995Assignee: Montell North America Inc.Inventors: Giampiero Morini, Enrico Albizzati, Umberto Giannini, Raimondo Scordamaglia, Luisa Barino
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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: 5142005Abstract: A process for the production of primarily syndiotactic vinyl aromatic polymers by polymerizing or copolymerizing vinyl aromatic monomers such as styrene or styrene derivatives in the presence of a catalyst system comprising the product of the reaction between:a) a compound of a transition metal (M) different from titanium and containing at least a bond M-O, M-C, M-N, M-P, M-S or M-halogen, andb) an organoaluminum compound containing at least an oxygen atom bound to the aluminum atom or bound between two aluminum atoms.Compound a) can be used as such or may be supported on a suitable carrier.Type: GrantFiled: December 15, 1987Date of Patent: August 25, 1992Assignee: Montedison S.p.A.Inventors: Enrico Albizzati, Umberto Giannini, Giovanni Giunchi, Romano Mazzocchi, Luigi Resconi
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Patent number: 5126303Abstract: Catalysts for the polymerization of olefins, comprising the product of the reaction between:A) a cyclopentadienyl compound of Ti, Zr or Hf;B) an alumoxane compound of formula: ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, the same or different from each other, are alkyl, alkenyl or alkylaryl radicals having 2 to 20 carbon atoms.Type: GrantFiled: January 29, 1990Date of Patent: June 30, 1992Assignee: Hinmont IncorporatedInventors: Luigi Resconi, Umberto Giannini, Enrico Albizzati
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Patent number: 5122492Abstract: Catalyst components for the polymerization of olefins and catalysts obtained therefrom, said components comprising a porous metal oxide on which a magnesium dihalide, and a titanium halide or titanium halogen alcoholate and a compound containing two or more ether groups having specific reactivity properties towards MgCl.sub.2 and TiCl.sub.4 are supported.Type: GrantFiled: December 14, 1990Date of Patent: June 16, 1992Assignee: Himont IncorporatedInventors: Enrico Albizzati, Giampiero Morini, Umberto Giannini
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Patent number: 5106807Abstract: Disclosed are solid catalyst components for the polymerization of olefins comprising a titanium halide or titanium alkoxy halide, and an electron-donor compound selected from silicon compounds of the formula ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hydrocarbyl radicals, supported on a magnesium halide in active form.Also disclosed are catalysts obtained from said catalyst components and from an Al-alkyl compound, as well as catalysts obtained by the reaction of an Al-alkyl compound and a silicon compound of the formula above with a solid catalyst component comprising a titanium halide or halogen alcoholate and an electron-donor compound having specific characteristics of extractability with Al-triethyl, supported on an active magnesium halide.Type: GrantFiled: January 4, 1991Date of Patent: April 21, 1992Assignee: Himont IncorporatedInventors: Giampiero Morini, Enrico Albizzati, Umberto Giannini, Luisa Barino, Raimondo Scordamaglia, Elisabetta Barbassa
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Patent number: 5068213Abstract: Catalyst components for the polymerization of olefins comprising a titanium halide or alkoxyhalide and an electron-donor compound selected from ethers having two or more ether groups and containing at least one heteroatom selected from the group consisting of N, S, P, Si, non-ether O and halogen atoms or at least one double bond, or both at least one heteroatom and at least one double bond, supported on a magnesium halide in active form.Catalysts obtained from said catalyst components and an Al-alkyl compound, as well as catalysts obtained by the reaction of an Al-alkyl compound and an ether having the above defined characteristics with a solid catalyst component comprising a titanium halide or alkoxyhalide and an electron-donor compound having particular characteristics of extractability with Al-triethyl, supported on activated magnesium halide.Type: GrantFiled: March 26, 1991Date of Patent: November 26, 1991Assignee: Hinmont IncorporatedInventors: Enrico Albizzati, Giampiero Morini, Umberto Giannini, Luisa Barino, Raimondo Scordamaglia, BarbePier C., Luciano Noristi
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Patent number: 5049535Abstract: Catalysts for the polymerization of olefins, obtained from special zirconocenic compounds and from alkyl-Al compounds.Type: GrantFiled: January 30, 1990Date of Patent: September 17, 1991Assignee: Himont IncorporatedInventors: Luigi Resconi, Umberto Giannini, Enrico Albizzati
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Patent number: 5021514Abstract: Imidized acrylic polymers obtained by means of the reaction of an acrylic resin in the molten state, with at least one modifying agent having the general formula:R--X--NH--R' (I)wherein:R and R' are either equal to, or different from, each other and represent hydrogen or an alkyl, cycloalkyl, aryl or alkylaryl radical containing from 1 to 20 carbon atoms, andX is a bifunctional radical selected from the group consisting of: --CO--, --CONH--, --NHCO--, --OCO--, --SO.sub.2 --, --C.sub.6 H.sub.4 SO.sub.2 --.Type: GrantFiled: May 29, 1990Date of Patent: June 4, 1991Assignee: Vedril S.p.A.Inventors: Luciano Canova, Umberto Giannini, Enrico Albizzati
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Patent number: 5017678Abstract: Melt-formable thermotropic liquid crystalline polymers containing groups derived from terephthalic acid and a mixture of phenyl hydroquinone, 2-(.alpha.-phenylisopropyl) hydroquinone and, if desired, 2,5 bis (.alpha.-phenylisopropyl) hydroquinone.Type: GrantFiled: June 4, 1990Date of Patent: May 21, 1991Assignee: Montedison S.p.A.Inventors: Umberto Giannini, Alfredo Coassolo, Marco Foa', Giampiero Sabarino, L. Lawrence Chapoy
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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: 4968755Abstract: Imidized acrylic polymers obtained by means of the reaction of an acrylic resin in the molten state, with at least one modifying agent having the general formula:R--X--NH--R' (I)wherein:R and R' are either equal to, or different from, each other and represent hydrogen or an alkyl, cycloalkyl; aryl or alkylaryl radical containing from 1 to 20 carbon atoms, andX is a bifunctional radical selected from the group consisting of: --CO--, --CONH--, --NHCO--, --OCO--, --SO.sub.2 --, --C.sub.6 H.sub.4 SO.sub.2 --.Type: GrantFiled: January 13, 1988Date of Patent: November 6, 1990Assignee: Vedril S.p.A.Inventors: Luciano Canova, Umberto Giannini, Enrico Albizzati