Patents by Inventor Stefania Albonetti
Stefania Albonetti 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: 9868684Abstract: The invention pertains to a process for the manufacture of a perfluorovinylether by hydrodehalogenation of a halofluoroether (HFE) having general formula (I-A) or (I-B): RfO—CRf?X—CRf?Rf??X???(I-A) wherein Rf represents a C1-C6 perfluoro(oxy)alkyl group; Rf?, Rf? and Rf??, equal or different from each other, independently represent fluorine atoms or C1-C5 perfluoro(oxy)alkyl groups; X and X?, equal or different from each other, are independently chosen among Cl, Br or I; wherein Rf* and Rf*?, equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoro(oxy)alkyl groups; Y1 and Y2, equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoroalkyl groups; X and X? are as above defined; said process comprising contacting said halofluoroether (HFE) with hydrogen in the presence of a catalyst comprising palladium and at least one transition metal (M) selected from the group consisting of the metals of group VIIIB, other than palladium, and oType: GrantFiled: February 2, 2012Date of Patent: January 16, 2018Assignee: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.Inventors: Stefano Millefanti, Vito Tortelli, Giuseppe Marchionni, Stefania Albonetti, Manuel Gregori, Giuseppe Fornasari
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Patent number: 9731263Abstract: A process is described for preparing stable suspensions of metal nanoparticles by means of a microwave-assisted metal nanoparticle synthesis undertaken in an aqueous environment at low temperature and at ambient pressure and atmosphere.Type: GrantFiled: March 1, 2010Date of Patent: August 15, 2017Assignee: COLOROBBIA ITALIA S.P.A.Inventors: Magda Blosi, Stefania Albonetti, Michele Dondi, Giovanni Baldi, Andrea Barzanti, Marco Bitossi
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Publication number: 20130324769Abstract: The invention pertains to a process for the manufacture of a perfluorovinylether by hydrodehalogenation of a halofluoroether (HFE) having general formula (I-A) or (I-B): RfO—CRf?X—CRf?Rf??X???(I-A) wherein Rf represents a C1-C6 perfluoro(oxy)alkyl group; Rf?, Rf? and Rf??, equal or different from each other, independently represent fluorine atoms or C1-C5 perfluoro(oxy)alkyl groups; X and X?, equal or different from each other, are independently chosen among Cl, Br or I; wherein Rf* and Rf*?, equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoro(oxy)alkyl groups; Y1 and Y2, equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoroalkyl groups; X and X? are as above defined; said process comprising contacting said halofluoroether (HFE) with hydrogen in the presence of a catalyst comprising palladium and at least one transition metal (M) selected from the group consisting of the metals of group VIIIB, other than palladium, and oType: ApplicationFiled: February 2, 2012Publication date: December 5, 2013Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.Inventors: Stefano Millefanti, Vito Tortelli, Giuseppe Marchionni, Stefania Albonetti, Manuel Gregori, Giuseppe Fornasari
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Publication number: 20110313059Abstract: A process is described for preparing stable suspensions of metal nanoparticles by means of a microwave-assisted metal nanoparticle synthesis undertaken in an aqueous environment at low temperature and at ambient pressure and atmosphere.Type: ApplicationFiled: March 1, 2010Publication date: December 22, 2011Inventors: Magda Blosi, Stefania Albonetti, Michele Dondi, Giovanni Baldi, Andrea Barzanti, Marco Bitossi
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Patent number: 6956004Abstract: Active vanadium/phosphorus mixed oxide catalyst for the conversion of non-aromatic hydrocarbons, e.g., n-butane, into maleic anhydride. The catalyst is prepared from the catalyst precursor, that is, prepared by the reaction of a source of vanadium in an organic medium in the presence of a phosphorus source. The organic medium is (a) isobutyl alcohol or a mixture of isobutyl alcohol and benzyl alcohol and (b) a polyol. The catalyst precurso is transformed into the active catalyst by an activation process that includes a heat treatment that includes applying a temperature of up to 600° C.Type: GrantFiled: February 18, 2004Date of Patent: October 18, 2005Assignee: Lonza S.p.A.Inventors: Stefania Albonetti, Fabrizio Cavani, Simone Ligi, Gianluca Mazzoni
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Publication number: 20040162217Abstract: Active vanadium/phosphorus mixed oxide catalyst for the conversion of non-aromatic hydrocarbons, e.g., n-butane, into maleic anhydride. The catalyst is prepared from the catalyst precursor, that is, prepared by the reaction of a source of vanadium in an organic medium in the presence of a phosphorus source. The organic medium is (a) isobutyl alcohol or a mixture of isobutyl alcohol and benzyl alcohol and (b) a polyol. The catalyst precursor is transformed into the active catalyst by an activation process that includes a heat treatment that includes applying a temperature of up to 600° C.Type: ApplicationFiled: February 18, 2004Publication date: August 19, 2004Inventors: Stefania Albonetti, Fabrizio Cavani, Simone Ligi, Gianluca Mazzoni
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Patent number: 6734135Abstract: A process for the preparation of a vanadium/phosphorus mixed oxide catalyst precursor is described, comprising the reaction of a vanadium source in selected organic media in the presence of a phophorus source. The medium comprises: (a) isobutyl alcohol or a mixture of isobutyl alcohol and benzyl alcohol and (b) a polyol in the weight ratio (a) to (b) of 99:1 to 5:95. After its activation, the vanadium/phosphorus mixed oxide catalyst precursor is an excellent catalyst in the conversion of non-aromatic hydrocarbons like n-butane to malic anhydride.Type: GrantFiled: April 4, 2002Date of Patent: May 11, 2004Assignee: Lonza S.p.A.Inventors: Stefania Albonetti, Fabrizio Cavani, Simone Ligi, Gianluca Mazzoni
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Patent number: 6083869Abstract: The present invention relates to a process for the preparation of mixed vanadium, antimony and iron oxides and to their use as catalysts for the ammoxidation of alkanes. The process for the preparation of a mixed oxide defined above is characterized in that:respective vanadium, antimony and iron compounds are dissolved in at least one saturated alcohol or in water,the alcoholic .epsilon.olution or the aqueous solution thus obtained is brought into contact with an aqueous solution containing an ammonium salt, in order to precipitate the mixed oxide,the mixed oxide obtained is separated and calcined.Type: GrantFiled: June 11, 1998Date of Patent: July 4, 2000Assignee: Rhodia Fiber and Resin IntermediatesInventors: Stefania Albonetti, Gilbert Blanchard, Paolo Burattin, Fabrizio Cavani, Ferruccio Trifiro
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Patent number: 6072070Abstract: Mixed oxide vanadium/antimony/titanium ammoxidation catalysts, particularly suited for the ammoxidation of alkanes and exhibiting X-ray diffraction spectra which are characteristic of a crystallographic phase of rutile TiO.sub.2, are prepared by (a) dissolving respective soluble compounds of vanadium, of antimony and of titanium in at least one saturated alcohol, (b) contacting the alcoholic solution thus obtained with water and precipitating the mixed oxide therefrom, and (c) separating and calcining the mixed oxide thus precipitated.Type: GrantFiled: May 8, 1997Date of Patent: June 6, 2000Assignee: R.P. Fiber & Resin IntermediatesInventors: Stefania Albonetti, Gilbert Blanchard, Paolo Burattin, Fabrizio Cavani, Ferruccio Trifiro
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Patent number: 5686381Abstract: Vanadium/antimony/tin mixed oxides having the empirical formula (I):VSb.sub.a Sn.sub.b O.sub.x (I)exhibit an X-ray diffraction pattern characteristic of a crystallographic phase of rutile SnO.sub.2, are well suited as catalysts for the vapor phase ammoxidation of alkanes, and are conveniently prepared by (a) dissolving respective compounds of vanadium, antimony and tin in at least one saturated alcohol, (b) intimately contacting the alcoholic solution thus obtained with an aqueous solution containing an ammonium salt, thus precipitating the mixed oxides therefrom, and (c) separating and calcining these mixed oxides.Type: GrantFiled: June 23, 1995Date of Patent: November 11, 1997Assignee: Rhone-Poulenc ChimieInventors: Stefania Albonetti, Gilbert Blanchard, Paolo Burattin, Fabrizio Cavani, Ferruccio Trifiro
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Patent number: 5663392Abstract: Mixed oxide vanadium/antimony/titanium ammoxidation catalysts, particularly suited for the ammoxidation of alkanes and exhibiting X-ray diffraction spectra which are characteristic of a crystallographic phase of rutile TiO.sub.2, are prepared by (a) dissolving respective soluble compounds of vanadium, of antimony and of titanium in at least one saturated alcohol, (b) contacting the alcoholic solution thus obtained with water and precipitating the mixed oxide therefrom, and (c) separating and calcining the mixed oxide thus precipitated.Type: GrantFiled: January 24, 1996Date of Patent: September 2, 1997Assignee: R.P. Fiber & Resin IntermediatesInventors: Stefania Albonetti, Gilbert Blanchard, Paolo Burattin, Fabrizio Cavani, Ferruccio Trifiro