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Yves Chauvin Patents
Inventor:
Chauvin; Yves
Address:
Tours, FR
No. of patents:
60
Patents:


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Patent Number Title Of Patent Date Issued
8039660 Method of producing nitrile compounds October 18, 2011
The present invention relates to the manufacture of nitrile compounds from unsaturated organic compounds by reaction with hydrogen cyanide. It relates more particularly to the manufacture of nitrile compounds of use in the synthesis of adiponitrile, an important chemical intermediate in
7915426 Imidazolium salts and their use of these ionic liquids as a solvent March 29, 2011
New 1,2,3- or 1,2,3,4- or 1,2,3,4,5- substituted imidazolium salts and their uses as solvent in catalyzed organic reactions, as well as compositions containing them and a transition metal compound. They can be used in the following reactions: the telomerisation of conjugated dienes,
6525228 Process of telomerizing conjugated dienes February 25, 2003
The present invention is related to a process for telomerizing a conjugated diene which comprises reacting said conjugated diene with a compound containing active hydrogen in the presence of a catalyst system comprising at least one transition metal compound, at least one phosphorus-cont
6040263 Catalytic composition based on transition metal complexes, and a process for the hydrogenation o March 21, 2000
A novel non-aqueous catalytic composition comprises at least one quaternary ammonium and/or phosphonium salt in which the anion is selected from the group consisting of tetrafluoroborate, tetrachloroborate, hexafluorophosphate, hexafluoroantimonate, hexafluoroarsenate, trifluorosulph
5877376 Conversion of ethylene into butene-1 using additives based on quarternary ammonium salts March 2, 1999
The invention concerns an improved process for the conversion of ethylene into butene-1, wherein the ethylene is brought into contact with a catalyst obtained by the reaction of an alkyl titanate, possibly mixed with an ether, with a compound of aluminium of the formula AlR.sub.3 or
5874638 Process for hydroformylation of olefinic compounds February 23, 1999
A hydroformylation process for unsaturated compounds such as monoolefins and diolefins is carried out in an ionic medium in which the catalytic species is dissolved, but in which the reaction products (aldehydes) formed are only slightly soluble or are insoluble. The ionic medium is
5852130 Catalytic composition based on transition metal complexes, and a process for the hydrogenation o December 22, 1998
A novel catalytic composition comprises at least one quaternary ammonium and/or phosphonium salt in which the anion is selected from the group formed by tetrafluoroborate, tetrachloroborate, hexafluorophosphate, hexafluoroantimonate, hexafluoroarsenate, trifluorosulphonate, fluorosul
5792895 Process for the conversion of ethylene into but-1-ene using additives based on polymethylene gly August 11, 1998
The invention concerns an improved process for the conversion of ethylene into but-1-ene, wherein the ethylene is brought into contact with a catalyst obtained by the interaction of an alkyl titanate, possibly mixed with an ether, with a compound of aluminium of the formula AlR.sub.3 or
5780702 Process for displacing the double bond in olefins using a catalytic composition based on transit July 14, 1998
A catalytic composition comprises at least one quaternary ammonium and/or phosphonium salt in which the anion is preferably selected from the group formed by tetrafluoroborate, tetrachloroborate, hexafluorophosphate, hexafluoroantimonate, hexafluoroarsenate, trifluorosulphonate, fluo
5750455 Catalytic composition and process for the alkylation of aliphatic hydrocarbons May 12, 1998
The invention concerns a catalytic composition resulting from mixing at least one aluminum halide, at least one quaternary ammonium halide and/or at least one amine halohydrate and at least one cuprous compound, preferable a halide. The invention also concerns a process for the alkyl
5723712 Catalytic composition for biphase catalysis, in particular using nickel complexes, and a process March 3, 1998
A novel catalytic composition comprises a mixture of lithium halide, a hydrocarbylaluminium halide and at least one compound of a catalytic element, in particular a nickel complex. The invention also concerns a process for the oligomerisation and co-oligomerisation of olefins catalys
5693585 Aliphatic alkylation catalyst comprising an active phase containing a cuprous compound on a supp December 2, 1997
A catalyst containing a porous organic or mineral support and at least one active phase having at least one aluminum halide, at least one compound selected for quaternary ammonium halides and amine hydrohalides, and at least one cuprous compound, the support having been impregnated with
5675051 Catalytic composition and olefin disproportion process October 7, 1997
The invention concerns a catalytic olefin disproportion (also known as metathesis) process wherein the catalyst produced by dissolving a tungsten and/or molybdenum compound, more particularly a tungsten and/or molybdenum halide substituted with one or more phenoxo groups containing at le
5633416 Fuel produced by a process comprising etherification of a hydrocarbon fraction comprising olefin May 27, 1997
An internal combustion engine fuel is produced from a mixture of hydrocarbons comprising olefinic hydrocarbons containing 5 to 8 carbon atoms characterized in that it is produced by a process comprising a) a catalytic etherification step for at least a portion of the etherifiable ole
5589601 Process for the dimerization, co-dimerization and oligomerization of olefins December 31, 1996
The invention concerns a process for dimerization, co-dimerization and oligomerization of olefins, in particular .alpha.-olefins, with a catalytic composition resulting from a mixing at least one tungsten oxyhalide, at least one aryl isocyanate of diisocyanate, and at least one alkyl
5550306 Catalytic process for the dimerization of olefins August 27, 1996
The invention is concerned with a process for the dimerization, co-dimerization and oligomerization of olefins with a catalytic composition resulting from mixing at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide, at least one aluminum halide, a
5550304 Nickel-containing composition for catalysis and olefin dimerisation and oligomerisation process August 27, 1996
The invention concerns a catalytic composition and a process for the dimerisation, codimerisation or oligomerisation of olefins, said composition comprising a mixture of at least one bivalent nickel complex which contains two tertiary phosphine molecules, at least one nickel complex
5536689 Catalytic composition and a process for the dimerization of olefins July 16, 1996
The invention is concerned with a catalytic composition resulting from dissolving a nickel complex mixed or complexed with a tertiary phosphine in the medium resulting from mixing at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide, at least one
5525567 Catalytic composition and olefin disproportion process June 11, 1996
The invention concerns a catalytic composition for olefin disproportion (also known as metathesis) produced by dissolving a tungsten and/or molybdenum compound, more particularly a tungsten and/or molybdenum halide substituted with one or more phenoxo groups containing at least two h
5519742 Process for replacing a worn steam generator of a pressurized water nuclear reactor May 21, 1996
The process comprises separating the worn steam generator from the primary circuit of the reactor by cutting pipes of the primary circuit, extracting the worn steam generator from the reactor and placing in position in the reactor a new replacement steam generator (21) and connecting by
5502018 Nickel-containing composition for catalysis and olefin dimerisation and oligomerisation process March 26, 1996
The invention concerns a catalytic composition and a process for the dimerization, codimerization or oligomerization of olefins, said composition comprising a mixture of at least one bivalent nickel complex which contains two tertiary phosphine molecules, at least one nickel compound
5496783 Catalyst for the production of light alpha olefins by oligomerization of ethylene March 5, 1996
Process for oligomerizing ethylene into light alpha olefins, mainly 1-butene, 1-hexene, 1-octene and 1-decene, in which the ethylene is contacted with a catalyst obtained by mixing a zirconium compound with an organic compound chosen from within the class of acetals and ketals and wi
5476956 Process for codimerization of dienes and olefins December 19, 1995
Co dimerization is conducted of at least one monoolefin, for example a monoolefinic hydrocarbon such as ethylene, propylene or 1-butene, a halogenated monoolefin such as vinyl chloride, or an olefinic functional compound such as methyl acrylate, acrylonitrile, allyl acetate or vinyl
5449852 Process for the metathesis of olefins with an improved rhenium catalyst September 12, 1995
A process for the metathesis of olefins, wherein the olefins are reacted in contact with an improved catalyst comprising a niobium and/or tantalum compound and a rhenium compound on a porous support containing at least 75% alumina and having a surface area of at least 10 m.sup.2 /g.
5434282 Double-branched compounds and processes for their production July 18, 1995
A novel family of chemical compounds derived from fatty compounds has two branches of two carbon atoms on the linear chain and general formula C.sub.21 H.sub.39 COOR where R represents a hydrogen atom, a lower alkyl radical or a glyceryl radical. Particular compounds for consideration ha
5345023 Process for the production of light alpha olefins by oligomerization of ethylene September 6, 1994
Process for oligomerizing ethylene into light alpha olefins, mainly 1-butene, 1-hexene, 1-octene and 1-decene, in which the ethylene is contacted with a catalyst obtained by mixing a zirconium compound with an organic compound chosen from within the class of acetals and ketals and wi
5292979 Method for converting ethylene into light alpha olefins March 8, 1994
Process for the conversion of ethylene into light alpha olefins, mainly 1-butene, 1-hexene and 1-octene, in which the ethylene is contacted with a catalyst obtained by reacting a performed mixture of alkyl zirconate and ether with a chlorine or bromine-containing aluminum compound.
5104840 Non-aqueous liquid composition with an ionic character and its use as a solvent April 14, 1992
A non-aqueous liquid composition with an ionic character resulting from the contacting of at least one alkylaluminum dihalide with at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide, said composition being liquid below 80.degree. C., for example,
5095162 Catalytic composition and its use in oligomerizing monoolefins March 10, 1992
The invention concerns a catalytic composition resulting from placing at least one divalent nickel compound into contact with at least one hydrocarbylaluminum halide and at least one epoxy compound, in any order. It also concerns the use of the catalytic composition in a process of o
5059571 Catalytic composition and its use in oligomerizing monoolefins October 22, 1991
The invention concerns a catalytic composition resulting from placing at least one divalent nickel compound into contact with at least one hydrocarbylaluminum halide and at least one epoxy compound, in any order. It also concerns the use of the catalytic composition in a process of o
5043953 Pressure compensation device for an immersed volume of gas, in particular for an underwater elec August 27, 1991
This pressure compensating device for a volume of immersed gas is equipped with mobile or deformable walls and includes an immersed compensation bladder. The bladder is secured in a housing and communicates with the volume to be compensated. It is arranged by mounting means roughly at th
5030789 Catalytic method for the dimerization, codimerization or oligomerization of olefins with the use July 9, 1991
The invention provides a catalytic method for the dimerization or codimerization or oligomerization, in particular selective, of olefins, carried out under pressure, in a reaction zone 1 containing a solid catalyst bed in which is disposed a plurality of hollow internal spaces 6.3a d
4943669 Method according to the invention is notably applied to the selective dimerization of propylene July 24, 1990
The invention provides a catalytic method for the dimerization or codimerization or oligomerization, particularly selectively, of olefins, carried out under pressure, in a reaction zone 1 containing a solid catalyst bed into which is disposed a plurality of hollow internal spaces 6.3
4845201 Process for producing organolanthanides, the resultant compounds and their use July 4, 1989
A process for producing organolanthanides by reaction of a rare-earth metal with an unsaturated compound in an ether medium, the resultant compounds and the use of these compounds in organic synthesis and for catalysis is disclosed. The process is conducted at -80.degree. to +100.degree.
4795734 Rhenium-containing catalyst for the production of olefins by metathesis January 3, 1989
Process for manufacturing a rhenium-containing catalyst comprising three steps of:dry impregnation of an alumina-containing porous carrier, at a temperature lower than 80.degree. C., for at least 10 hours,first thermal treatment at 85.degree.-250.degree. C., andsecond thermal treatment at 40
4691048 Process for reducing carbonylation of aldehydes, uses as hemiacetalesters, catalyzed by cobalt c September 1, 1987
The invention concerns a process for reducing carbonylation of an aldehyde wherein the aldehyde is used as hemiacetalester, the reaction being conducted in the presence of a catalyst consisting of a cobalt carbonyl complex.The hemiacetal-ester may be formed in situ by reacting an acetal
4642408 Method for the removal of nickel, aluminum and chlorine from olefin oligomers February 10, 1987
Nickel, aluminum and chlorine derivatives which remain dissolved in olefin oligomers after oligomerization in the presence of a catalyst comprising nickel, aluminum and chlorine compounds, are removed from the crude product by treatment with:oxygen or a gas containing oxygen,anhydrous am
4628065 Process for methanol synthesis from carbon oxides and hydrogen in the presence of a soluble copp December 9, 1986
The invention has as an object a process for methanol synthesis from carbon oxides and hydrogen, performed in an inert liquid medium, in the presence of a catalyst system soluble in the liquid medium.The catalyst system used according to the invention is obtained by reacting a copper com
4615998 Catalyst suitable for synthesizing 1-butene by dimerization of ethylene October 7, 1986
A catalyst is formed by reacting, in a hydrocarbon medium, a trialkylaluminum with a mixture of an alkyl titanate with an ether. The activity and the selectivity are improved when adding the trialkylaluminum to a pre-formed mixture of alkyl titanate with ether.
4613726 Process for removing nickel, aluminum and chlorine from olefin oligomers September 23, 1986
Nickel, aluminum and chlorine derivatives which remain dissolved in olefin oligomers, after oligomerization in the presence of a nickel, aluminum, and chlorine-containing catalysts, are removed by successive treatments with:(a) anhydrous ammonia,(b) an aqueous solution of alkali metal hy
4533500 Process for manufacturing N-acyliminodiacetic acids August 6, 1985
N-acyliminodiacetic acids are manufactured by reacting formaldehyde or a formaldehyde generator compound with a N-unsubstituted amide or a generator thereof and with carbon monoxide in contact with a carbonylation catalyst, for example, a cobalt compound, the ratio of the aldehyde groups
4532370 Process for synthesizing 1-butene by dimerization of ethylene July 30, 1985
Process for synthesizing 1-butene by dimerization of ethylene, in the presence of a catalyst formed by reacting, in a hydrocarbon medium, a trialkylaluminum with a mixture of an alkyl titanate with an ether. The activity and the selectivity are improved when adding the ether to a pre
4511743 Process for homologating alcohols through the intermediate production of ketals with cobalt carb April 16, 1985
Process for the homologation of an alcohol wherein a ketal of the alcohol is reacted with hydrogen and carbon monoxide in the presence of a cobalt carbonyl complex and the resultant product is hydrolyzed to yield the aldehyde with one more carbon atom.
4497910 Process for methane synthesis by catalytic reduction of carbon monoxide in aqueous phase February 5, 1985
Process for the catalytic synthesis of methane by reaction of carbon oxides with hydrogen in the presence of liquid water, wherein the catalyst is formed of a carrier consisting either of coal or charcoal, preferably of plant origin, or of alumina-silica, on which is deposited ruthenium,
4424282 Process for the catalytic synthesis of hydrocarbons, particularly of methane, from hydrogen and January 3, 1984
Methane is produced by passing hydrogen, carbon monoxide and an aqueous liquid phase downwardly through a fixed bed of a catalyst containing ruthenium on a carrier such as alumina, separating and externally coolng in a heat exchanger the resultant aqueous phase before recycling, thereby
4398049 Oligomerization catalyst and process August 9, 1983
A catalyst composition is manufactured by admixing a hydrocarbyl aluminum halide of a nickel compound of the formula (R.sub.1 COO)(R.sub.2 COO)Ni, where R.sub.1 is hydrocarbyl with at least 5 carbon atoms and R.sub.2 is haloalkyl of 1-3 carbon atoms. Olefins such as ethylene, propylene a
4390431 Process for treating aqueous streams containing aluminum June 28, 1983
A process for treating an aqueous phase obtained by acidic or basic washing of a hydrocarbon phase comprising a soluble aluminum compound in solution, characterized in that it is neutralized at a pH of from 6 to 8.5, treated with an additive selected from the alkaline-earth metal oxides,
4387262 Process for oligomerizing olefins June 7, 1983
A process for oligomerizing olefins uses a catalyst composition obtained by contacting (a) bivalent nickel compound with (b) a hydrocarbylaluminum compound of the formula Al R.sub.x X.sub.y where R is a monovalent hydrocarbon radical, X is halogen, x is from 1 to 1.5, y is from 1.5 to 2,
4371627 Process for the catalytic synthesis of methane by reacting hydrogen with carbon monoxide February 1, 1983
Methane is obtained by reacting hydrogen with carbon monoxide in the presence of a catalyst manufactured by reacting a nickel compound with a reducing aluminum compound in the presence of a titanium compound. The aluminum compound is preferably a trialkylaluminum compound and the atomic
4366087 Oligomerization catalyst and process December 28, 1982
A catalyst composition is manufactured by admixing a hydrocarbyl aluminum halide with a nickel compound of the formula (R.sub.1 COO) (R.sub.2 COO) Ni, wherein R.sub.1 is hydrocarbyl of at least 5 carbon atoms and R.sub.2 is haloalkyl of 1-3 carbon atoms. Olefins such as ethylene, propyle
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