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WO/2002/044110A1 |
The present invention relates to an oxidation reaction in the presence of phase-transfer catalyst controlling reaction, which may be represented by general formular [(R1) (R2) (R3) (R4) N]xH¿y?[A], or QmMO3(L). The kind of catalyst itse...
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WO/2002/028778A1 |
The invention concerns a method for co-precipitating actinides in oxidation state (IV) which consists in: adding an organic complexing agent selective of actinides (IV) and consisting only of oxygen, carbon, nitrogen and hydrogen atoms, ...
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WO/2002/026750A2 |
Disclosed are substantially enantiomerically pure bis-phosphine compounds comprising a substantially enantiomerically pure chiral backbone linking two phosphine residues wherein one of the phosphine residues has three phosphorus-carbon b...
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WO/2002/026701A2 |
Ionic compounds with a freezing point of up to 100 °C are formed by the reaction of an one amine salt of formula (I) R?1¿ R?2¿ R?3¿ R?4¿ N?+¿ X?-¿, such as choline chloride with an organic compound (II) capable of forming a hydrog...
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WO/2002/016298A1 |
A supported gold catalyst is used for selective oxidation. In particular, an alcohol or ketone is oxidized to produce the corresponding carboxylic acid, an alcohol is oxidized to produce the corresponding ketone, and xylene is oxidized t...
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WO/2002/013778A2 |
The invention relates to cosmetic preparations containing dicarboxylic acid of formula (I) wherein A represents a linear or branched alkylene radical comprising 4 to 24 carbon atoms.
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WO/2002/010228A2 |
Polymeric materials are recycled by transformation to useful chemicals by oxidization in the liquid phase using acetic acid as a solvent and a metal bromide catalyst.
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WO/2002/006202A1 |
A process for producing compounds of formula (VIIa) and (VIIb) wherein X is a leaving group; Y and Y?1¿ are idependently Cl or Br; and Z is Cl, Br or a haloalkyl group which process comprises a) reacting a compound of formula (VII) wher...
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WO/2002/004396A1 |
According to the present invention there is provided a process for retarding the discolouration of dicarboxylic acids, said process comprising: a) heating said dicarboxylic acid to a temperature above its melting point; b) adding water t...
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WO/2002/004397A1 |
A method for producing a fluorine-containing compound, characterized in that a compound (1) is reacted with a compound (2) to produce a compound (3) having a fluorine content of 30 mass % or more, the compound (3) is fluorinated in a liq...
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WO/2002/000588A1 |
The invention concerns a method for oxidising with oxygen or an oxygen-containing gas, hydrocarbons into corresponding carboxylic acids, alcohols and/or ketones or alcohols and/or ketones into corresponding carboxylic acids. More precise...
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WO/2001/087815A2 |
Aliphatic carboxylic acids of formulae (Ib) R?1¿-COOH(Ia) and R?2¿-COOH wherein R?1¿ is tertiary C¿4-20?-alkyl and R?2¿ is selected from hydrogen and C¿1-6?-alkyl, or R?1¿ and R?2¿ together are -(CH¿2?)¿n?-with n = 3 to 10, are...
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WO/2001/074828A1 |
The invention concerns a water soluble compound of formula ($g(a)) wherein: A represents naphthyl or phenyl; and Ar¿1? and Ar¿2? independently represent a saturated or aromatic carbocyclic group; X¿a?, X¿b? are independently selected...
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WO/2001/072732A2 |
Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and t...
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WO/2001/066502A1 |
The invention concerns a method for oxidising hydrocarbons, in particular saturated aliphatic hydrocarbons, whether branched or not, cycloaliphatic and alkylaromatic hydrocarbons into acid or polyacid compounds. More particularly, the in...
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WO/2001/064614A1 |
The invention relates to a method for producing chlorocarboxylic acid chlorides of formula (I), wherein R?1¿ and R?2¿, independently from one another, mean a hydrogen atom, an organic radical containing carbon, a halogen, a nitro or cy...
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WO/2001/042191A1 |
The present invention is directed to a method for the prophylactic and therapeutic treatment of diabetic retinopathy. The method involves the administration of an inhibitor of formulae (I), (II) and (III) of the branch chain amino acid-d...
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WO/2001/027075A1 |
A process for manufacturing acrylonitrile comprising reacting propylene, ammonia and oxygen in a reactor zone in the presence of a catalyst to produce a reactor effluent containing crude acrylonitrile, transferring the reactor effluent c...
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WO/2001/025467A1 |
A fermentation medium containing: (a) a source of metabolizable carbon and energy; (b) a source of inorganic nitrogen; (c) a source of phosphate; (d) at least one metal selected from the group consisting of an alkali metal, an alkaline e...
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WO/2001/023061A2 |
Volatile compounds may be economically recovered from solids present in aqueous solution by subjecting the solution to rapid separation where the volatilization occurs in a flash, spray, or fluid bed, or mechanically agitated dryers. Rap...
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WO/2001/017375A1 |
This invention provides an emulsified fat product which is fortified with calcium. This invention also provides novel calcium-containing salts and sources and methods for their preparation and their use in the above said emulsified fat p...
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WO/2001/000557A1 |
The invention concerns a method for making adipic acid, more particularly adipic acid crystals. More precisely, it concerns a method for treating adipic acid crystals derived from crystallisation which consists in dispersing the adipic a...
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WO/2001/000555A1 |
The present invention relates to one-step oxidation process for preparation of cyclohexane to adipic acid, using molecular oxygen, in liquid phase, in the presence of catalyst, containing either cobalt or cobalt and iron. The catalyst is...
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WO/2000/076661A1 |
The invention concerns a method for the selective separation of iron from other metal ions in particular ions present in certain oxidation catalysts. The invention also concerns a method for recycling oxidation catalysts in the oxidation...
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WO/2000/069808A1 |
A process for the preparation of L-carnitine inner salt comprising the reduction, with a suitable reducing agent, of a compound of formula (I): where X¿1? and X¿2?, which may be the same or different, are hydroxy, C¿1?-C¿4? alkoxy, p...
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WO/2000/063147A1 |
This invention relates to methods of replacing water and cyclohexanone with acetic acid in an aqueous solution of catalyst, preferably a cobalt compound. Such an aqueous solution is produced by extracting catalyst with water from a cyclo...
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WO/2000/059858A1 |
The invention relates to a method for the oxidation of hydrocarbon in carboxylic acid, alcohol and/or corresponding ketone or alcohol and/or ketone in corresponding carboxylic acid by oxygen or a gas containing oxygen. The inventive meth...
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WO/2000/048981A1 |
This invention relates to methods of extracting in solution a metal catalyst from a reaction mixture produced by oxidizing cyclohexane to adipic acid in the presence of acetic acid and the metal catalyst. According to this invention, sub...
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WO/2000/048972A1 |
A oxidation method which comprises reacting a substrate such as a hydrocarbon, an aldehyde, a ketone, or the like with molecular oxygen in the presence of (1) an oxidation catalyst comprising an imide compound such as N-hydroxyphthalimid...
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WO/2000/046172A1 |
This invention relates to methods of oxidizing hydrocarbons, such as cyclohexane, o-xylene, m-xylene, and p-xylene, to form a respective acid, such as adipic acid, phthalic acid, isophthalic acid, and terephthalic acid, for example, by i...
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WO/2000/037710A1 |
An indium precursor composition having utility for incorporation of indium in a microelectronic device structure, e.g., as an indium-containing film on a device substrate by bubbler or liquid delivery MOCVD techniques, or as a dopant spe...
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WO/2000/027782A1 |
Halofluorinated alkylene monomers are made by a method comprising the steps of: (a) subjecting a first polymer which is the reaction product of a fluorinated vinyl monomer and a vinyl comonomer to dehydrohalogenation to form a second pol...
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WO/2000/015597A1 |
The invention concerns a method for crystallising carboxylic acid, more particularly adipic acid and a method for making crystallised carboxylic acid, more specifically a method for treating a reaction medium derived from direct oxidatio...
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WO/2000/015598A1 |
The invention concerns an improved method for treating a reaction medium derived from the direct oxidation of hydrocarbon into carboxylic acid, using molecular oxygen or a gas containing same, in liquid phase, in a solvent and in the pre...
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WO/2000/011008A1 |
Chiral phosphine ligands derived from chiral natural products including D-mannitol and tartaric acid. The ligands contain one or more 5-membered phospholane rings with multiple chiral centers, and provide high stereoselectivity in asymme...
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WO/2000/001655A1 |
This invention relates to methods of controlling the oxidation of cyclohexane to adipic acid in the presence of a monobasic acid solvent, by separating the catalyst from the reaction mixture, outside the reaction zone. Substantially all ...
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WO/2000/001647A2 |
Organic compounds, e.g., fluoro-organic compounds such as fluorocarboxylic acids or carboxylic acid chlorides can contain small quantities of carboxylic acid fluorides, HF or hydrolysable fluoride. Corrosive fluorides or hydrofluoric aci...
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WO/2000/001656A1 |
This invention relates to methods of controlling the oxidation of cyclohexane to adipic acid in the presence of a monobasic acid solvent, by extracting the catalyst from the reaction mixture, outside the reaction zone. Substantially all ...
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WO/2000/001654A1 |
An aliphatic diacid and nitrous oxide are produced by the following methods: the aliphatic dibasic acid is produced by oxidation of an hydrolylated aromatic compound with nitrous oxide to form the aliphatic dibasic acid and the nitrous o...
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WO/1999/062917A1 |
The invention relates to phospholanes and diphospholanes of general formula (I), whereby R represents H, C¿1?-C¿6?-alkyl, aryl, alkyl aryl, SiR?2¿¿3?, R?2¿ represents alkyl or aryl, A represents H, C¿1?-C¿6?-alkyl, aryl, Cl, or (a...
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WO/1999/059953A1 |
This invention relates to methods of controlling the oxidation of hydrocarbons to respective intermediate oxidation products, e.g., dibasic acids, by adjusting the bulk temperature of the liquid mixture under oxidation by a cooling eleme...
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WO/1999/044707A2 |
Disclosed is a cost-effective method for purifying and acidifying carboxylic acids, including organic acids and amino acids. The method involves removing impurities by allowing the anionic form of the carboxylic acid to bind to an anion ...
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WO/1999/044980A1 |
The invention concerns the treatment of reaction mixtures derived from an oxidation reaction of cyclohexane into adipic acid and more particularly the separation of the different constituents of said mixtures and the purification of the ...
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WO/1999/042282A1 |
A modified PbZrTiO¿3? perovskite crystal material thin film, wherein the PbZrTiO¿3? perovskite crystal material includes crystal lattice A-sites and B-sites at least one of which is modified by the presence of a substituent selected fr...
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WO/1999/042430A1 |
This invention relates to methods for controlling the oxidation of hydrocarbons to dibasic acids, in the presence of a catalyst and a monobasic acid, by removing the catalyst from the reaction mixture, outside the oxidation zone, after t...
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WO/1999/040058A1 |
This invention relates to methods and reactor devices for controlling the oxidation of hydrocarbons to dibasis acids, in the presence of a cobalt catalyst and a monobasic acid, such as acetic acid, by treating the catalyst from the react...
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WO/1999/037599A2 |
This invention relates to methods and reactor devices for controlling the oxidation of hydrocarbons to dibasic acids in the presence of a catalyst and a monobasic acid, by removing the catalyst from the reaction mixture, outside the oxid...
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WO/1999/028286A1 |
Process to separate rhodium from an organic starting mixture comprising of an organic solvent, C¿6?-dicarboxylic acids and iodide compounds, wherein rhodium is separated by extracting the organic starting mixture with an aqueous solvent...
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WO/1999/025461A1 |
A low-cost and practical global warming prevention method and device that can decompose N¿2?O contained in gases to be treated at a relatively low temperature. Specifically, a method and device for global warming prevention, wherein, a ...
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WO/1999/015489A1 |
This invention relates to methods and devices for removing acetic acid from cyclohexane in the direct oxidation of cyclohexane to adipic acid, especially after recycling catalyst which is precipitaded by introduction of additional cycloh...
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