Patents by Inventor Franco Mizia
Franco Mizia 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: 7404942Abstract: Process for the production of hydrogen and the co-production of carbon dioxide in separate streams comprising the following operations: feeding of a solid to a first reaction zone (R1) in which a liquid or gaseous hydrocarbon, preferably natural gas or methane, is also fed, which reacts with the solid fed at its maximum oxidation degree (over-oxidized form), leading to the formation of the combustion products carbon dioxide and water and the solid at its minimum oxidation degree (reduced form); feeding of the solid in reduced form to a second reaction zone (R2) into which water is also fed, which reacts with the reduced form of the solid, producing hydrogen, steam and the solid at an intermediate oxidation degree (oxidized form); feeding of the solid in oxidized form to a third reaction zone (R3) into which air is also fed, obtaining, from the further oxidation of the solid, heat and the solid in over-oxidized form to be recycled to the first reaction zone (R1), wherein the solid contains at least one elementType: GrantFiled: May 29, 2007Date of Patent: July 29, 2008Assignees: ENI S.p.A., Enitecnologie S.p.A., Snamprogetti S.p.A.Inventors: Domenico Sanfilippo, Franco Mizia, Alberto Malandrino, Stefano Rossini
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Publication number: 20070258878Abstract: Process for the production of hydrogen and the co-production of carbon dioxide in separate streams comprising the following operations: feeding of a solid to a first reaction zone (R1) in which a liquid or gaseous hydrocarbon, preferably natural gas or methane, is also fed, which reacts with the solid fed at its maximum oxidation degree (over-oxidized form), leading to the formation of the combustion products carbon dioxide and water and the solid at its minimum oxidation degree (reduced form); feeding of the solid in reduced form to a second reaction zone (R2) into which water is also fed, which reacts with the reduced form of the solid, producing hydrogen, steam and the solid at an intermediate oxidation degree (oxidized form); feeding of the solid in oxidized form to a third reaction zone (R3) into which air is also fed, obtaining, from the further oxidation of the solid, heat and the solid in over-oxidized form to be recycled to the first reaction zone (R1), wherein the solid contains at least en one elemType: ApplicationFiled: May 29, 2007Publication date: November 8, 2007Applicants: ENI S.p.A., ENITECNOLOGIE S.p.A., SNAMPROGETTI S.p.A.Inventors: Domenico SANFILIPPO, Franco Mizia, Alberto Malandrino, Stefano Rossini
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Patent number: 6992214Abstract: Integrated process for the preparation of aromatic isocyanates comprising: the reaction between an aromatic amine and an organiccarbonate in the presence of a catalyst selected from organic and inorganic salts of a metal selected from Zn, Sn, Pb, Cu; the removal of the catalyst; the passivation of the quantity of residual metal in the urethane formed in step a); the removal of the organic solvent and its optional recycling to step a) of the reaction; the evaporation of the aromatic urethane with partial pyrolysis; the complete pyrolysis of the urethane in gas phase; the recovery of the isocyanate.Type: GrantFiled: February 1, 2001Date of Patent: January 31, 2006Assignee: Dow Global Technologies Inc.Inventors: Pietro Cesti, Aldo Bosetti, Franco Mizia, Marcella Notari, Marco Ricci, Franco Rivetti, Ugo Romano
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Publication number: 20050232859Abstract: Process for the production of hydrogen and the co-production of carbon dioxide in separate streams comprising the following operations: feeding of a solid to a first reaction zone (R1) in which a liquid or gaseous hydrocarbon, preferably natural gas or methane, is also fed, which reacts with said solid fed at its maximum oxidation degree (over-reduced form), leading to the formation of the combustion products carbon dioxide and water and the solid at its minimum oxidation degree (reduced form); feeding of the solid in reduced form to a second reaction zone (R2) into which water is also fed, which reacts with said reduced form of the solid, producing hydrogen, steam and the solid at an intermediate oxidation degree (oxidized form); feeding of the solid in oxidized form to a third reaction zone (R3) into which air is also fed, obtaining, from the further oxidation of the solid, heat and the solid in over-oxidized form to be recycled to the first reaction zone (R1), wherein said solid contains at least on eType: ApplicationFiled: March 22, 2005Publication date: October 20, 2005Applicants: ENI S.p.A., ENITECNOLOGIE S.p.A., SNAMPROGETTI S.p.A.Inventors: Domenico Sanfilippo, Franco Mizia, Alberto Malandrino, Stefano Rossini
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Publication number: 20030162995Abstract: Integrated process for the preparation of aromatic isocyanates comprising: the reaction between an aromatic amine and an organiccarbonate in the presence of a catalyst selected from organic and inorganic salts of a metal selected from Zn, Sn, Pb, Cu; the removal of the catalyst; the passivation of the quantity of residual metal in the urethane formed in step a); the removal of the organic solvent and its optional recycling to step a) of the reaction; the evaporation of the aromatic urethane with partial pyrolysis; the complete pyrolysis of the urethane in gas phase; the recovery of the isocyanate.Type: ApplicationFiled: March 17, 2003Publication date: August 28, 2003Inventors: Pietro Cesti, Aldo Bosetti, Franco Mizia, Marcella Notari, Marco Ricci, Franco Rivetti, Ugo Romano
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Patent number: 6565663Abstract: The invention relates to the use of organic carbonates having formula (I) wherein: n=1-4 R and R′ are two linear or branched alkyl radicals which contain a number of carbon atoms whose sum is equal to at least 5 and which can be the same or different, as solvents for the washing of metal surfaces.Type: GrantFiled: December 31, 2001Date of Patent: May 20, 2003Assignee: Enichem S.p.A.Inventors: Franco Mizia, Franco Rivetti
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Publication number: 20020056468Abstract: The invention relates to the use of organic carbonates having formula (I) 1Type: ApplicationFiled: December 31, 2001Publication date: May 16, 2002Applicant: ENICHEM S.p.A.Inventors: Franco Mizia, Franco Rivetti
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Patent number: 6384178Abstract: A process is described for the preparation of polycarbonate dials (PCD) with a high molecular weight comprising two subsequent reaction steps, wherein in the first step PCD with a molecular weight ranging from 500 to 2000, is synthesized and in the second step the molecular weight of the PCD is increased to the desired value. Polycarbonate diols are usefully applied in the field of thermoelastomeric polyurethane manufactured products, paints, adhesives and synthetic leather.Type: GrantFiled: March 5, 2001Date of Patent: May 7, 2002Assignee: Enichem S.p.A.Inventors: Franco Mizia, Franco Rivetti
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Publication number: 20010047073Abstract: A process is described for the preparation of polycarbonate diols (PCD) with a high molecular weight comprising two subsequent reaction steps, wherein in the first step PCD with a molecular weight ranging from 500 to 2000, is synthesized and in the second step the molecular weight of the PCD is increased to the desired value. Polycarbonate diols are usefully applied in the field of thermoelastomeric polyurethane manufactured products, paints, adhesives and synthetic leather.Type: ApplicationFiled: March 5, 2001Publication date: November 29, 2001Applicant: ENICHEM S.p.A.Inventors: Franco Mizia, Franco Rivetti
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Patent number: 5849955Abstract: A process is described for the synthesis of 2-hydroxy-4-alkyloxy benzophenone by the selective alkylation of 2,4-dihydroxy benzophenone with a dialkyl carbonate, in liquid phase, in the presence of suitable catalysts, at a temperature ranging between 120.degree. and 220.degree. C. and at a total pressure ranging from 2 to 60 ate.Type: GrantFiled: November 20, 1997Date of Patent: December 15, 1998Assignee: Enichem S.p.A.Inventors: Marcello Notari, Franco Mizia, Franco Rivetti
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Patent number: 5780645Abstract: A process for the alkylation of imides wherein the imides are reacted with a dialkyl carbonate, in the liquid state, at a temperature of between 100.degree. C. and 250.degree. C. and at a pressure of between 0 and 60 atmospheres in the presence of a basic catalyst. The dialkyl carbonate reagents are not very toxic and are thermally stable and their use as alkylation agents makes it possible to produce waste products with a negligible saline content.Type: GrantFiled: December 31, 1996Date of Patent: July 14, 1998Assignee: Enichem S.p.A.Inventors: Marcello Notari, Franco Mizia, Franco Rivetti
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Patent number: 5315034Abstract: Multistep process for the preparation of alkyl mono and diisocyanates consisting in reacting the corresponding aliphatic amine or diamine with dimethylcarbonate and, substantially, in partially vaporizing and converting the urethane thus formed in an evaporator to subsequently terminate the cracking in a II.degree. reactor, and finally subjecting the cracking product to fractional distillation at reduced pressure, recycling the unconverted part to the partial vaporization step.Type: GrantFiled: May 11, 1993Date of Patent: May 24, 1994Assignee: Enichem Synthesis S.p.A.Inventors: Franco Mizia, Franco Rivetti, Ugo Romano
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Patent number: 5235062Abstract: New procedure for the preparation of polyoxazolidines which can be defined with the general formula: ##STR1## This procedure, which excludes the use of isocyanates, requires the simple transesterification of the dicarbamate of a diamine with an N-hydroxyalkyloxazolidine.Type: GrantFiled: April 9, 1992Date of Patent: August 10, 1993Assignee: Enichem Synthesis S.p.A.Inventors: Alberto Greco, Franco Mizia, Franco Rivetti
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Patent number: 5210284Abstract: Organic mono- or di-isocyanates are prepared by the decomposition of the corresponding urethanes, by means of a continuous process in which:(a) an urethane flow is continuously fed to a decomposition reactor containing a liquid mixture, composed of a high boiling inert organic solvent, of an unaltered urethane and isocyanate, kept at the boiling conditions of the solvent, at a temperature suitable to decompose the urethane and evaporate the alcohol which is the co-product of the reaction;(b) the liquid mixture is continuously withdrawn from the reactor in (a) and is fed to a flash equipment, at an operating temperature lower than the decomposition temperature of the urethane, where the isocyanate is partially evaporated and the residuous liquid mixture is recycled to the reactor in (a); and(c) the steam flow generated in (b) is distilled to separate the isocyanate in pure or substantially pure form.Type: GrantFiled: December 19, 1991Date of Patent: May 11, 1993Assignee: Enichem Synthesis S.p.A.Inventors: Franco Mizia, Carlo Calderoni
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Patent number: 5091556Abstract: A process for preparing carbamates is disclosed, in which:a stoichiometric or higher-than-stoichiometric amount of an alkyl carbonate or a cycloalkyl carbonate is reacted with an aliphatic, cycloaliphatic or aromatic amine, in a first reaction step, by operating in the presence of a carbamation catalyst, in order to produce a mixture of a carbamate and an urea,the urea contained in the reaction product from the first process step is reacted with carbonate, in a second reaction step, in order to produce the corresponding carbamate, andthe reaction mixture coming from the second process step is submitted to treatments in order to recover the carbamate.The process makes it possible high yields and high values of selectivity to the useful reaction product to be obtained.Type: GrantFiled: March 28, 1990Date of Patent: February 25, 1992Assignee: Enichem Synthesis, S.p.A.Inventors: Carlo Calderoni, Franco Mizia, Franco Rivetti, Ugo Romano
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Patent number: 5021590Abstract: A process is provided for the preparation of N-alkyl-carbamates by directly reacting low-molecular weight alkyl-isocyanates, in particular methyl isocyanate, and a substituted phenolic precursor in solution in the presence of a basic catalyst compound selected from the class of bicyclic amidines or bicyclic guanidines.Type: GrantFiled: February 22, 1990Date of Patent: June 4, 1991Assignee: Enichem Synthesis SpAInventors: Franco Mizia, Franco Rivetti, Ugo Romano
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Patent number: 4849170Abstract: A composition of matter for inhibition of stress corrosion stainless steels in contact with aqueous and/or polar organic solutions which contain chloride ions and optionally cuprous ions, comprising an aqueous or polar organic solution of a member selected from the group consisting of quaternary ammonium alkylcarbonates and quaternary ammonium benzylcarbonates having the general formula: ##STR1##Type: GrantFiled: September 20, 1988Date of Patent: July 18, 1989Assignee: Enichem Sintesi S.p.A.Inventors: Franco Mizia, Franco Rivetti, Ugo Romano, Luigi Rivola, Giuseppe Civardi
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Patent number: 4792417Abstract: A composition of matter for inhibition of stress corrosion of stainless steels in contact with aqueous and/or polar organic solutions which contain chloride ions and optionally cuprous ions, comprising an aqueous or polar organic solution of a member selected from the group consisting of quaternary ammonium alkylcarbonates and quaternary ammonium benzylcarbonates having the general formula: ##STR1##Type: GrantFiled: December 19, 1986Date of Patent: December 20, 1988Assignee: Enichem Sintesi S.p.A.Inventors: Franco Mizia, Franco Rivetti, Ugo Romano, Luigi Rivola, Giuseppe Civardi
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Patent number: 4659845Abstract: Process for the production of N-methylcarbamates: ##STR1## (wherein RO- is the radical of a substituted phenol or of a naphthol), wherein:in a first reaction step methylamine and diphenyl carbonate are reacted with each other, operating in the liquid phase and as a continuous process, in order to form phenol and phenyl-N-methylurethane;in a second reaction step phenyl-N-methylurethane, within the related reaction mixture outcoming from the first step, is thermally continuously decomposed, to yield a gaseous stream containing methyl isocyanate, from which the components different than methyl isocyanate are condensed off;in a third step the methyl isocyanate stream, outcoming from the second step, after an optional preliminary condensation, is continuously fed and contacted with a solution of a substituted phenol or of a naphthol in an inert organic solvent, containing a basic catalyst, to form N-methylcarbamate (I);N-methylcarbamate (I) is finally recovered from the reaction mixture outcoming from the third stType: GrantFiled: May 7, 1985Date of Patent: April 21, 1987Assignee: Enichem Sintesi S.p.A.Inventors: Franco Rivetti, Franco Mizia, Guido Garone, Ugo Romano