Patents by Inventor Marc Huser
Marc Huser 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: 6884751Abstract: Hydrocyanation catalysts comprising aqueous solutions of at least one water-soluble phosphine and nickel values, well suited for the hydrocyanation of ethylenically unsaturated organic compounds such as diolefins, olefinic nitrites and monolefins, are produced by (a) admixing an aqueous solution of such at least one water-soluble phosphine with a nickel hydroxide, (b) adding hydrogen cyanide or a compound which generates hydrogen cyanide to the mixture thus formed, (c) stirring the resulting mixture until the nickel values have at least partially dissolved, and (d) reducing at least a portion of said nickel values having an oxidation state of greater than zero to the zero oxidation state.Type: GrantFiled: June 22, 2001Date of Patent: April 26, 2005Assignee: Rhodia Feber & Resin IntermedaitesInventors: Paolo Burattin, Pierre Coqueret, Marc Huser
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Publication number: 20030204109Abstract: Water-soluble sulfonated organophosphorus compounds are purified by at least partially removing contaminating sulfite values therefrom, by decreasing the pH of a solution of such sulfonated organophosphorus compounds to a value of less than or equal to 4, and maintaining the pH of the solution at this value of 4 or less for such period of time as to reduce the weight concentration of sulfite in the solution to less than 100 ppm; the organophosphorus compounds thus purified are well suited for the two-phase cocatalysis of a wide variety of organic reactions.Type: ApplicationFiled: April 22, 2003Publication date: October 30, 2003Applicants: RHODIA FIBER, RESIN INTERMEDIATESInventors: Larbi Aouni, Paolo Burattin, Pierre Coqueret, Marc Huser
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Patent number: 6613939Abstract: Water-soluble sulfonated organophosphorus compounds are purified by at least partially removing contaminating sulfite values therefrom, by decreasing the pH of a solution of such sulfonated organophosphorus compounds to a value of less than or equal to 4, and maintaining the pH of the solution at this value of 4 or less for such period of time as to reduce the weight concentration of sulfite in the solution to less than 100 ppm; the organophosphorus compounds thus purified are well suited for the two-phase cocatalysis of a wide variety of organic reactions.Type: GrantFiled: June 25, 2001Date of Patent: September 2, 2003Assignee: Rhodia Fiber & Resin IntermediatesInventors: Larbi Aouni, Paolo Burattin, Pierre Coqueret, Marc Huser
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Patent number: 6469194Abstract: Ethylenically unsaturated organic compounds, for example diolefins, olefinic nitriles and monoolefins, are noncontaminatingly hydrocyanated into corresponding nitriles by (a) reacting such ethylenically unsaturated organic compounds with hydrogen cyanide in the presence of an aqueous solution containing a catalytically effective amount of a catalyst which comprises at least one nickel compound and at least one water-soluble phosphine, (b) thereafter separating the organic phase from the aqueous phase which result, the separated aqueous phase comprising a solid phase formed during hydrocyanation, and (c) thence treating the separated aqueous phase, or a solid phase removed therefrom, with hydrogen cyanide to thus at least partially dissolve said solid phase contained therein or removed therefrom.Type: GrantFiled: June 22, 2001Date of Patent: October 22, 2002Assignee: Rhodia Fiber & Resin IntermediatesInventors: Paolo Burattin, Pierre Coqueret, Marc Huser
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Publication number: 20020026066Abstract: Hydrocyanation catalysts comprising aqueous solutions of at least one water-soluble phosphine and nickel values, well suited for the hydrocyanation of ethylenically unsaturated organic compounds such as diolefins, olefinic nitrites and monolefins, are produced by (a) admixing an aqueous solution of such at least one water-soluble phosphine with a nickel hydroxide, (b) adding hydrogen cyanide or a compound which generates hydrogen cyanide to the mixture thus formed, (c) stirring the resulting mixture until the nickel values have at least partially dissolved, and (d) reducing at least a portion of said nickel values having an oxidation state of greater than zero to the zero oxidation state.Type: ApplicationFiled: June 22, 2001Publication date: February 28, 2002Inventors: Paolo Burattin, Pierre Coqueret, Marc Huser
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Publication number: 20020022736Abstract: Ethylenically unsaturated organic compounds, for example diolefins, olefinic nitrites and monoolefins, are noncontaminatingly hydrocyanated into corresponding nitrites by (a) reacting such ethylenically unsaturated organic compounds with hydrogen cyanide in the presence of an aqueous solution containing a catalytically effective amount of a catalyst which comprises at least one nickel compound and at least one water-soluble phosphine, (b) thereafter separating the organic phase from the aqueous phase which result, the separated aqueous phase comprising a solid phase formed during hydrocyanation, and (c) thence treating the separated aqueous phase, or a solid phase removed therefrom, with hydrogen cyanide to thus at least partially dissolve said solid phase contained therein or removed therefrom.Type: ApplicationFiled: June 22, 2001Publication date: February 21, 2002Inventors: Paolo Burattin, Pierre Coqueret, Marc Huser
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Publication number: 20020016497Abstract: Water-soluble sulfonated organophosphorus compounds are purified by at least partially removing contaminating sulfite values therefrom, by decreasing the pH of a solution of such sulfonated organophosphorus compounds to a value of less than or equal to 4, and maintaining the pH of the solution at this value of 4 or less for such period of time as to reduce the weight concentration of sulfite in the solution to less than 100 ppm; the organophosphorus compounds thus purified are well suited for the two-phase cocatalysis of a wide variety of organic reactions.Type: ApplicationFiled: June 25, 2001Publication date: February 7, 2002Inventors: Larbi Aouni, Paolo Burattin, Pierre Coqueret, Marc Huser
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Patent number: 5908805Abstract: Transition metal (0) or (1)/phosphine catalysts suited, e.g., for the hydrocyanation of ethylenically unsaturated compounds, are produced by reducing, via hydrogenation, aqueous solutions containing at least one transition metal compound and at least one monodentate or bidentate water-soluble phosphine, advantageously at least one phosphine having one of the following formulae (I) and/or (II):P(Ar1).sub.a (Ar2).sub.b (Ar3).sub.c (Q1).sub.d (Q2).sub.e (Q3).sub.f(I)(Ar1).sub.a (Ar2).sub.b (Ar3).sub.c (Q1).sub.d (Q2).sub.e P-L-P(Ar1).sub.g (Ar2).sub.h (Q1).sub.i (Q2).sub.j (II)In formulas (I) and (II), Ar1, Ar2 and Ar3 may be identical or different and are each an aryl radical or a substituted aryl radical. Q1, Q2 and Q3 may be identical or different and are each an alkyl radical, a cycloalkyl radical, a substituted alkyl radical, or a substituted cycloalkyl radical.Type: GrantFiled: December 27, 1996Date of Patent: June 1, 1999Assignee: R.P. Fiber & Resin IntermediatesInventors: Marc Huser, Robert Perron
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Patent number: 5876587Abstract: Catalyst compounds comprising at least one transition metal in an oxidation state of 0 to 1, and at least one monodentate or bidentate water-soluble phosphine, well suited for the hydrocyanation of ethylenically unsaturated compounds, are electrochemically synthesized, by electrolyzing an aqueous solution catholyte (contained in the cathode compartment of any suitable electrolytic cell) comprising at least one transition metal compound and at least one monodentate or bidentate water-soluble phosphine, advantageously at least one phosphine having the following formulae (I) and/or (II):P(Ar1).sub.a (Ar2).sub.b (Ar3).sub.c (D1).sub.d (D2).sub.e (D3).sub.f(I)(Ar1).sub.a (Ar2).sub.b (D1).sub.d (D2).sub.e P-L-P(Ar1).sub.g (Ar2).sub.h (D1).sub.i (D2).sub.j (II).Type: GrantFiled: December 27, 1996Date of Patent: March 2, 1999Assignee: Rhone-Poulenc ChimieInventors: Dominique Horbez, Marc Huser, Robert Perron
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Patent number: 5856555Abstract: The present invention relates to a process for the hydrocyanation of organic compounds containing ethylenic unsaturation to nitrites, in particular the hydrocyanation of diolefins or of substituted olefins, such as alkenenitriles.More specifically, it comprises a process for the hydrocyanation of organic compounds containing at least one ethylenic double bond by reaction with hydrogen cyanide in the presence of an aqueous solution of a catalyst comprising at least one transition metal compound and at least one water-soluble phosphine, characterized in that the said water-soluble phosphine is a monodentate or bidentate phosphine.Type: GrantFiled: April 11, 1997Date of Patent: January 5, 1999Assignee: Rhone-Poulenc Fiber & Resin IntermediatesInventors: Marc Huser, Robert Perron
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Patent number: 5679237Abstract: Catalyst compounds comprising at least one transition metal having an oxidation number of 0 or 1 and at least one sulfonated phosphine are electrochemically synthesized, by electrolyzing an aqueous solution catholyte (contained in the cathode compartment of any suitable electrolytic cell) comprising at least one transition metal compound and at least one sulfonated phosphine.Type: GrantFiled: December 6, 1995Date of Patent: October 21, 1997Assignee: R. P. Fiber & Resin IntermediatesInventors: Alex Chamard, Dominique Horbez, Marc Huser, Robert Perron
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Patent number: 5488129Abstract: Ethylenically unsaturated aliphatic nitriles, for example the linear pentenenitriles, are converted/hydrocyanated into their corresponding dinitriles, for example adiponitrile, by reacting such nitriles with hydrogen cyanide, in an aqueous reaction medium which comprises (1) a catalytically effective amount of a transition metal compound and a sulfonated phosphine, together with (2) a cocatalytically effective amount of at least one Lewis acid; the Lewis acid cocatalyst promotes the linearity of the final product dinitriles and/or prolongs the useful life of the catalyst.Type: GrantFiled: November 3, 1994Date of Patent: January 30, 1996Assignee: Rhone-Poulenc ChimieInventors: Marc Huser, Robert Perron
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Patent number: 5486643Abstract: 2-Methyl-3-butenenitrile is efficiently and readily converted into a linear pentenenitrile, notably 3-pentenenitrile, a valuable intermediate for the production of adiponitrile, by isomerizing same in the presence of a catalytically effective amount of an aqueous solution of at least one sulfonated phosphine and at least one transition metal compound.Type: GrantFiled: October 11, 1994Date of Patent: January 23, 1996Assignee: Rhone-Poulenc ChimieInventors: Marc Huser, Robert Perron
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Patent number: 5312969Abstract: Difunctional butenes are linearly dicarbonylated into 3-hexene-1,6-dioic acid or alkyl diesters thereof, well suited for the ultimate production of, e.g., adipic acid, by reacting such difunctional butene with carbon monoxide and, if appropriate, an alcohol, at an elevated temperature under superatmospheric pressure, in the presence of at least one source of hydrogen chloride and a catalytically effective amount of palladium, at least a portion of which palladium being in the zero oxidation state, as well as a quaternary onium chloride of nitrogen or phosphorus, the nitrogen or phosphorus atom being tetracoordinated to carbon atoms, with the proviso that the nitrogen atom may be coordinated to two pentavalent phosphorus atoms.Type: GrantFiled: May 18, 1992Date of Patent: May 17, 1994Assignee: Rhone-Poulenc ChimieInventors: Marc Huser, Sylvain Mutez, Robert Perron
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Patent number: 5087731Abstract: A process of alkoxycarbonylation making use of a new catalyst consisting of a palladium-phosphine complex, the phosphine having a pKa greater than or equal to 7, a chlorinated aromatic compound, carbon monoxide and an alcohol.Type: GrantFiled: October 2, 1990Date of Patent: February 11, 1992Assignee: Rhone-Poulenc ChimieInventors: Marc Huser, John Osborn
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Patent number: 5037998Abstract: A process of hydrogenolysis utilizing a new catalyst consisting of a palladium phosphine complex, the phosphien having a pKa greater than or equal to 6, a chlorinated aromatic compound and hydrogen.Type: GrantFiled: July 20, 1989Date of Patent: August 6, 1991Assignee: Rhone-Poulenc ChimieInventors: Marc Huser, John Osborn
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Patent number: 4945174Abstract: New palladium-based complexes permit the complexing of chlorinated aromatic derivatives. These complexes make it possible to perform hydrogenolysis, hydrocarbonylation and alkoxycarbonylation reaction on chlorinated compounds.Type: GrantFiled: July 20, 1989Date of Patent: July 31, 1990Assignee: Rhone Poulenc ChimieInventors: Marc Huser, John Osborn