Patents by Inventor Daniele Bigiavi
Daniele Bigiavi 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: 8202611Abstract: Films especially suitable for the packaging of fresh foodstuff, like salad and vegetables, due to their high permeability to oxygen, carbon dioxide and water vapor, are obtained from polyolefin composition comprising (percentage by weight): A) 5% to 80% of a butene-1 polymer or polymer composition containing from 0% to 25% of one or more comonomers selected from ethylene and alpha-olefins different from 1-butene, provided that, when ethylene only is present as comonomer, the amount of ethylene is higher than 4% and a copolymer fraction (i) containing at least 6.2% of ethylene is present, said polymer or polymer composition having a content of fraction soluble in xylene at 0° C. of from 50% to 100% and a Flexural Modulus (measured according to ISO 178) from 15 to 300 MPa; B) 20% to 95% of a propylene homopolymer or copolymer having a content of fraction insoluble in xylene at room temperature of 93% or more.Type: GrantFiled: December 7, 2005Date of Patent: June 19, 2012Assignee: Basell Poliolefine Italia, s.r.l.Inventors: Daniele Bigiavi, Giampaolo Pellegatti, Stefano Spataro
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Patent number: 8153757Abstract: A solution process for polymerizing one or more ?-olefins of formula CH2?CHR, where R is H or an alkyl radical C1-12, to produce a polyolefin soluble in the reaction medium, the process comprising: a) polymerizing said one or more ?-olefins in a solution phase in the presence of a polymerization catalyst and a inert solvent having a vapor pressure lower than 100 kPa at 20° C.; b) separating the produced polyolefin from the unreacted monomers and the inert solvent by means of a sequence of at least three volatilization chambers operating at a decreasing pressure, the second devolatilization chamber being operated at a pressure from 0.8 to 5 bar.Type: GrantFiled: December 18, 2008Date of Patent: April 10, 2012Assignee: Basell Poliolefine Italia s.r.l.Inventors: Nicolò Arich de Finetti, Daniele Bigiavi, Anna Fait
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Patent number: 8097681Abstract: A 1-butene/propylene copolymer composition having a content of propylene derived units from 1 to 4% by weight, wherein at least 50% of the crystalline polymer is present in the thermodynamically stable, trigonal Form I (detected by DSC analysis) after 100 hours of the first melting at room temperature comprising: b) from 5% by weight to 95% by weight of an atactic 1-butene propylene copolymer having the following features: i) distribution of molecular weight Mw/Mn equal to or lower than 4; ii) no enthalpy of fusion detectable at a differential scanning calorimeter (DSC); and iii) infrared crystallinity lower than 0.5%; b) from 5% by weight to 95% by weight of an isotactic 1-butene propylene copolymer having the following features: i) isotactic pentads (mmmm) measured by 13C-NMR, higher than 80%; ii) melting point (Tm(II)) higher than 70° C.; and iii) distribution of molecular weight Mw/Mn equal to or lower than 4.Type: GrantFiled: August 22, 2007Date of Patent: January 17, 2012Assignee: Basell Polyolefine GmbHInventors: Giampaolo Pellegatti, Daniele Bigiavi, Rita Martelli, Maria Silvia Tonti, Luigi Resconi, Simona Guidotti
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Patent number: 8097682Abstract: A 1-butene/propylene copolymer composition having a content of propylene derived units from 4 to 10% by weight, wherein at least 50% of the polymer is present in the thermodynamically stable, trigonal form I after 100 hours at room temperature, said composition comprising: a) from 5% by weight to 95% by weight of an atactic 1-butene propylene copolymer having the following features: i) distribution of molecular weight Mw/Mn equal to or lower than 4; ii) no enthalpy of fusion detectable at a differential scanning calorimeter (DSC); and iii) infrared crystallinity lower than 0.5%; b) from 5% by weight to 95% by weight of an isotactic 1-butene propylene copolymer having the following features: i) isotactic pentads (mmmm) measured by 13C-NMR, higher than 80%; ii) melting point (Tm(II)) higher than 70° C.; and iii) distribution of molecular weight Mw/Mn equal to or lower than 4.Type: GrantFiled: August 23, 2007Date of Patent: January 17, 2012Assignee: Basell Polyolefine GmbHInventors: Giampaolo Pellegatti, Daniele Bigiavi, Rita Martelli, Maria Silvia Tonti, Luigi Resconi, Simona Guidotti
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Patent number: 7985799Abstract: A process for preparing polyolefin blends comprising: a) polymerizing in a solution phase propylene or 1-butene to prepare a polymeric solution containing a semicrystalline polymer component; b) polymerizing in a solution phase 1-hexene or 1-octene to prepare a polymeric solution containing an amorphous polymer component; c) mixing the polymeric solutions obtained from steps a) and b); d) subjecting the mixture of step c) to a devolatilization step to separate a polyolefin blend comprising a semicrystalline component and an amorphous component; the polymerization steps a) and b) being carried out in two polymerization reactors connected in parallel.Type: GrantFiled: May 8, 2006Date of Patent: July 26, 2011Assignee: Basell Poliolefine Italia s.r.l.Inventors: Luigi Resconi, Daniele Bigiavi
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Publication number: 20110136981Abstract: The present invention relates to butene-1 copolymers containing up to 40% by mol of ethylene and/or propylene derived units characterized by the following properties: d) Product of the reactivity ratios r1·r2?2; e) Content of butene-1 units in form of isotactic pentads (mmmm)>98%; and f) absence of 4,1 insertions of butene units.Type: ApplicationFiled: January 26, 2011Publication date: June 9, 2011Applicant: BASELL POLIOLEFINE ITALIA S.P.A.Inventors: Giampiero Morini, Fabrizio Piemontesi, Gianni Vitale, Daniele Bigiavi, Anteo Pelliconi, Enea Garagnani, Pietro Baita
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Patent number: 7943717Abstract: The present invention relates to butene-1 copolymers containing up to 40% by mol of ethylene and/or propylene derived characterized by the following properties: d) Product of the reactivity ratios r1·r2?2; e) Content of butene-1 units in form of isotactic pentads (mmmm)>98%; and f) absence of 4,1 insertions of butene units.Type: GrantFiled: November 3, 2003Date of Patent: May 17, 2011Assignee: Basell Poliolefine Italia, S.p.A.Inventors: Giampiero Morini, Fabrizio Piemontesi, Gianni Vitale, Daniele Bigiavi, Anteo Pelliconi, Enea Garagnani, Pietro Baita
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Publication number: 20100267906Abstract: A solution process for polymerizing one or more ?-olefins of formula CH2?CHR, where R is H or an alkyl radical C1-12, to produce a polyolefin soluble in the reaction medium, the process comprising: a) polymerizing said one or more ?-olefins in a solution phase in the presence of a polymerization catalyst and a inert solvent having a vapor pressure lower than 100 kPa at 20° C.; b) separating the produced polyolefin from the unreacted monomers and the inert solvent by means of a sequence of at least three volatilization chambers operating at a decreasing pressure, the second devolatilization chamber being operated at a pressure from 0.8 to 5 bar.Type: ApplicationFiled: December 18, 2008Publication date: October 21, 2010Applicant: Basell Poliolefine Italia s.r.l.Inventors: Nicolò Arich de Finetti, Daniele Bigiavi, Anna Fait
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Publication number: 20100121011Abstract: A 1-butene/propylene copolymer composition having a content of propylene derived units from 1 to 4% by weight, wherein at least 50% of the crystalline polymer is present in the thermodynamically stable, trigonal Form I (detected by DSC analysis) after 100 hours of the first melting at room temperature comprising: b) from 5% by weight to 95% by weight of an atactic 1-butene propylene copolymer having the following features: i) distribution of molecular weight Mw/Mn equal to or lower than 4; ii) no enthalpy of fusion detectable at a differential scanning calorimeter (DSC); and iii) infrared crystallinity lower than 0.5%; b) from 5% by weight to 95% by weight of an isotactic 1-butene propylene copolymer having the following features: isotactic pentads (mmmm) measured by C-NMR, higher than 80%; i) ii) melting point (Tm(II)) higher than 70° C.; and iii) distribution of molecular weight Mw/Mn equal to or lower than 4.Type: ApplicationFiled: August 22, 2007Publication date: May 13, 2010Applicant: Basell Polyolefine GmbHInventors: Giampaolo Pellegatti, Daniele Bigiavi, Rita Martelli, Maria Silvia Tonti, Luigi Resconi, Simona Guidotti
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Publication number: 20100121015Abstract: A 1-butene/propylene copolymer composition having a content of propylene derived units from 4 to 10% by weight, wherein at least 50% of the polymer is present in the thermodynamically stable, trigonal form 1 after 100 hours at room temperature, said composition comprising: a) from 5% by weight to 95% by weight of an atactic 1-butene propylene copolymer having the following features: i) distribution of molecular weight Mw/Mn equal to or lower than 4; ii) no enthalpy of fusion detectable at a differential scanning calorimeter (DSC); and iii) infrared crystallinity lower than 0.5%; b) from 5% by weight to 95% by weight of an isotactic 1-butene propylene copolymer having the following features: i) isotactic pentads (mmmm) measured by 13C-NMR, higher than 80%; ii) melting point (Tm(II)) higher than 70° C.; and iii) distribution of molecular weight Mw/Mn equal to or lower than 4.Type: ApplicationFiled: August 23, 2007Publication date: May 13, 2010Applicant: BASELL POLYOLEFINE GMBHInventors: Giampaolo Pellegatti, Daniele Bigiavi, Rita Martelli, Maria Silvia Tonti, Luigi Resconi, Simona Guidotti
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Publication number: 20090234083Abstract: A solution process for polymerizing one or more ?-olefins of formula CH2?CHR, where R is H or an alkyl radical C1-12, to produce a polymer that is soluble in the reaction medium, the process comprising: (a) polymerization in a solution phase of one or more ?-olefins in the presence of an organo-aluminum compound and a catalyst system comprising a transition metal compound as the catalyst component; (b) the polymeric solution obtained from step a) is then pressurized and transferred by means of a screw pump to a successive step for removing the unreacted monomers from the polymer; wherein the pumping capacity of said screw pump is kept constant by adding the polymeric solution with water at a feeding point upstream the screw pump.Type: ApplicationFiled: July 18, 2006Publication date: September 17, 2009Applicant: Basell Poliolefine Italia s.r.l.Inventors: Daniele Bigiavi, Giuseppe Penzo
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Publication number: 20090043045Abstract: A process for preparing polyolefin blends comprising: a) polymerizing in a solution phase propylene or 1-butene to prepare a polymeric solution containing a semicrystalline polymer component; b) polymerizing in a solution phase 1-hexene or 1-octene to prepare a polymeric solution containing an amorphous polymer component; c) mixing the polymeric solutions obtained from steps a) and b); d) subjecting the mixture of step c) to a devolatilization step to separate a polyolefin blend comprising a semicrystalline component and an amorphous component; the polymerization steps a) and b) being carried out in two polymerization reactors connected in parallel.Type: ApplicationFiled: May 8, 2006Publication date: February 12, 2009Applicant: Basell Poliolefine Italia s.r.l.Inventors: Luigi Resconi, Daniele Bigiavi
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Patent number: 7414095Abstract: A solution process for polymerizing one or more ?-olefins of the formula CH2?CHR, where R is H or an alkyl radical C1-C18, to produce a polymer that is soluble in the reaction medium, comprising the steps of: continuously polymerizing in a liquid phase the ?-olefin in the presence of a catalyst system based on a transition metal compound to obtain a solution of polymer in the reaction medium; the polymeric solution obtained from step a) is then mixed in one or more mixing stages with an aqueous mixture comprising one or more organic compounds having at least a hydroxy or epoxy group, said aqueous mixture having a dynamic viscosity at 30° C. higher than 50 cP (centiPoise).Type: GrantFiled: November 29, 2004Date of Patent: August 19, 2008Assignee: Basell Polioefine Italia s.r.l.Inventors: Giuseppe Penzo, Daniele Bigiavi, Massimo Covezzi, Maria Silvia Tonti, Anna Fait, Pietro Baita
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Publication number: 20080090061Abstract: Films especially suitable for the packaging of fresh foodstuff, like salad and vegetables, due to their high permeability to oxygen, carbon dioxide and water vapour, are obtained from polyolefin composition comprising (percentage by weight): A) 5% to 80% of a butene-1 polymer or polymer composition containing from 0% to 25% of one or more comonomers selected from ethylene and alpha-olefins different from 1-butene, provided that, when ethylene only is present as comonomer, the amount of ethylene is higher than 4% and a copolymer fraction (i) containing at least 6.2% of ethylene is present, said polymer or polymer composition having a content of fraction soluble in xylene at 0° C. of from 50% to 100% and a Flexural Modulus (measured according to ISO 178) from 15 to 300 MPa; B) 20% to 95% of a propylene homopolymer or copolymer having a content of fraction insoluble in xylene at room temperature of 93% or more.Type: ApplicationFiled: December 7, 2005Publication date: April 17, 2008Applicant: Basell Poliolefine Italia s.r.l.Inventors: Daniele Bigiavi, Giampaolo Pellegatti, Stefano Spataro
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Publication number: 20070265401Abstract: A solution process for polymerizing one or more ?-olefins of the formula CH2?CHR, where R is H or an alkyl radical C1-C18, to produce a polymer that is soluble in the reaction medium, comprising the steps of: continuously polymerizing in a liquid phase the ?-olefin in the presence of a catalyst system based on a transition metal compound to obtain a solution of polymer in the reaction medium; the polymeric solution obtained from step a) is then mixed in one or more mixing stages with an aqueous mixture comprising one or more organic compounds having at least a hydroxy or epoxy group, said aqueous mixture having a dynamic viscosity at 30° C. higher than 50 cP (centiPoise).Type: ApplicationFiled: November 29, 2004Publication date: November 15, 2007Applicant: Basell Poliolefine Italia s.r.l.Inventors: Giuseppe Penzo, Daniele Bigiavi, Massimo Covezzi, Maria Tonti, Anna Fait, Pietro Baita
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Patent number: 7199163Abstract: Method for continuously removing the unreacted butene-1, and optionally other volatile components, from a polymeric solution obtained by liquid phase (co)polymerization of butene-1, the method comprising the steps of: subjecting the polymeric solution to heating and mixing conditions such that a mixture is formed consisting substantially of: (1) a polybutene melt containing entrapped butene-1 and (2) supercritical gaseous butene-1; subjecting the above mixture to a sequence of devolatilization steps operating at decreasing pressures.Type: GrantFiled: June 17, 2003Date of Patent: April 3, 2007Assignee: Basell Poliolefine Italia S.p.A.Inventors: Daniele Bigiavi, Nicolò Arich De Finetti, Gabriele Mei, Guiseppe Penzo, Massimo Covezzi, Pietro Baita, Maria Silvia Tonti
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Patent number: 7160964Abstract: A liquid-phase process for polymerizing ?-olefins of the formula CH2?CHR, where R is H or an alkyl radical C1–C6, to produce a polymer that is soluble in the reaction medium, comprising the steps of: a) continuously polymerizing in liquid phase the ?-olefin in the presence of a catalyst system based on a transition metal compound; b) continuously withdrawing from step a) a solution of polymer in the liquid reaction medium; c) mixing in one or more mixing stages said solution of polymer in the reaction medium with an organic deactivator having: at least a hydroxy group, a boiling point higher than 150° C., and a ratio between the molecular weight (MW) and the number of hydroxy groups (OH) comprised between 20 and 100.Type: GrantFiled: June 17, 2003Date of Patent: January 9, 2007Assignee: Basell Poliolefine Italia S.p.A.Inventors: Daniele Bigiavi, Gabriele Mei, Nicolo' Arich De Finetti, Giuseppe Penzo, Gianni Vitale, Massimo Covezzi
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Publication number: 20060155071Abstract: The present invention relates to butene-1 copolymers containing up to 40% by mol of ethylene and/or propylene derived characterized by the following properties: d) Product of the reactivity ratios r1·r2?; e) Content of butene-1 units in form of isotactic pentads (mmmm)>98%; and f) absence of 4,1 insertions of butene units.Type: ApplicationFiled: November 3, 2003Publication date: July 13, 2006Inventors: Giampiero Morini, Fabrizio Piemontesi, Gianni Vitale, Daniele Bigiavi, Anteo Pelliconi, Enea Garagnani, Pietro Baita
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Publication number: 20050250917Abstract: A liquid-phase process for polymerizing ?-olefins of the formula CH2?CHR, where R is H or an alkyl radical C1-C6, to produce a polymer that is soluble in the reaction medium, comprising the steps of: a) continuously polymerizing in liquid phase the ?-olefin in the presence of a catalyst system based on a transition metal compound; b) continuously withdrawing from step a) a solution of polymer in the liquid reaction medium; c) mixing in one or more mixing stages said solution of polymer in the reaction medium with an organic deactivator having: at least a hydroxy group, a boiling point higher than 150° C., and a ratio between the molecular weight (MW) and the number of hydroxy groups (OH) comprised between 20 and 100.Type: ApplicationFiled: June 17, 2003Publication date: November 10, 2005Applicant: DANIELE BIGIAVI, GABRIELE MEI, NICOLO' ARICH DE FINETTIInventors: Daniele Bigiavi, Gabriele Mei, Nicolo Arich De Finetti, Giuseppe Penzo, Gianni Vitale, Massimo Covezzi
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Publication number: 20050234217Abstract: Method for continuously removing the unreacted butene-1, and optionally other volatile components, from a polymeric solution obtained by liquid phase (co)polymerization of butene-1, the method comprising the steps of: subjecting the polymeric solution to heating and mixing conditions such that a mixture is formed consisting substantially of: (1) a polybutene melt containing entrapped butene-1 and (2) supercritical gaseous butene-1; subjecting the above mixture to a sequence of devolatilization steps operating at decreasing pressures.Type: ApplicationFiled: June 17, 2003Publication date: October 20, 2005Applicant: Basell Poliolefine Italia S.p.A.Inventors: Daniele Bigiavi, Nicolo Arich De Finetti, Gabriele Mei, Giuseppe Penzo, Massimo Covezzi, Pietro Baita, Maria Silvia Tonti