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| Number | Title | Issue Date |
| 8088943 | Hydrocyanation of pentenenitriles The invention provides a hydrocyanation process to produce adiponitrile and other dinitriles having six carbon atoms, in the presence of catalyst composition comprising a zero-valent nickel and at least one bidentate phosphorus-containing ligand wherein the bidentat... | 01/03/2012 |
| 8039660 | Method of producing nitrile compounds 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 che... | 10/18/2011 |
| 7977502 | Process for making and refining 3-pentenenitrile, and for refining 2-methyl-3-butenenitrile The invention provides an integrated, continuous process for the production of 3-pentenenitrile, the refining of 3-pentenenitrile, and the refining of 2-methyl-3-butenenitrile, the process comprising: (a) contacting, in a reaction ... | 07/12/2011 |
| 7919646 | Hydrocyanation of 2-pentenenitrile The invention provides a process for hydrocyanation, comprising: contacting 2-pentenenitrile with hydrogen cyanide at a temperature in the range of about 0° C. to about 150° C. in the presence of at least one Lewis acid promoter and a catalyst precursor compositio... | 04/05/2011 |
| 7880028 | Process for making 3-pentenenitrile by hydrocyanation of butadiene The invention provides a continuous process for the production of 3-pentenenitrile, comprising: (a) contacting, in a reaction zone, a hydrogen cyanide-containing feed, a 1,3-butadiene-containing feed, and a catalyst precursor compo... | 02/01/2011 |
| 7816551 | Method for producing dinitriles An adiponitrile/methylglutaronitrile preparation process includes distilling a reaction stream to obtain stream 3 depleted in pentenenitriles (bottom product) and stream 4 enriched in pentenenitriles (top product); extracting stream 3 obtaining ... | 10/19/2010 |
| 7709675 | Continuous method for the production of linear pentene nitriles A process is described for continuously hydrocyanating 1,3-butadiene in the presence of at least one nickel(0) catalyst with chelate ligands, wherein 1,3-butadiene and hydrogen cyanide are used in a molar ratio of from 1.6:1 to 1.1:1. ... | 05/04/2010 |
| 7687655 | Method for the production of dinitrile compounds The present invention relates to a process for the manufacture of dinitrile compounds by double hydrocyanation of an olefin. It relates particularly to a process for the manufacture of dinitrile compounds by double hydrocyanation of an olefin present in a mix... | 03/30/2010 |
| 7671229 | Method for the production of pentene nitriles from n-butane A process is described for hydrocyanating 1,3-butadiene over at least one nickel(0) complex having phosphorus ligands as a catalyst, wherein the 1,3-butadiene is used in a mixture with n-butane and the mixture contains from 60 to 90% by volume of 1,3-butadiene and f... | 03/02/2010 |
| 7659422 | Hydrocyanation process with reduced yield losses A hydrocyanation process produces adiponitrile and other dinitriles having six carbon atoms. The process involves forming a reaction mixture in the presence of at least one Lewis acid. The reaction mixture includes ethylenically unsaturated nitriles having five carb... | 02/09/2010 |
| 7442825 | Making nitrile compounds from ethylenically unsaturated compounds The present invention concerns a process for hydrocyanating ethylenically unsaturated organic compounds to compounds containing at least one nitrile function. It relates more particularly to the hydrocyanation of diolefins such as butadiene or of substituted olefins... | 10/28/2008 |
| 7439381 | Hydrocyanation method A process is described for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene with hydrogen cyanide over at least one catalyst, wherein the 1,3-butadiene and/or hydrogen cyanide is contacted with at least one microporous solid before the reaction. ... | 10/21/2008 |
| 7385071 | Hydrocyanation of pentenenitriles and/or 2-methyl-3-butenenitrile using promoters obtained from the chlorination of titanium-rich ores Process for hydrocyanating a substrate selected from 2-, 3-, or 4-pentenenitrile and/or 2-methyl-3-butenenitrile or mixtures thereof by contacting the substrate with HCN in the presence of a zero-valent nickel catalyst and a promoter that is obtained as a byproduct ... | 06/10/2008 |
| 7253298 | Process for preparing nitrile compounds from ethylenically unsaturated compounds The present invention concerns a process for hydrocyanating ethylenically unsaturated organic compounds to compounds containing at least one nitrile function. It relates more particularly to the hydrocyanation of diolefins such as butadiene or of substituted olefins... | 08/07/2007 |
| 7193092 | Chiral diphosphorus compounds and their transition metal complexes The present invention relates to chiral diphosphorus compounds and their transition metal complexes, to a process for preparing chiral diphosphorus compounds and their transition metal complexes and also to their use in asymmetric syntheses. ... | 03/20/2007 |
| 7153811 | Multi-component catalyst system for the polycondensation manufacture of polyesters This invention relates to new multi-component catalyst systems for the polycondensation of polyesters. More particularly, this invention pertains to novel multi-component, germanium based catalyst systems for the polycondensation of PET (polyethylene terephthalate) ... | 12/26/2006 |
| 7105696 | Method for making nitrile compounds from ethylenically unsaturated compounds The invention concerns a method for hydrocyanation of ethylenically unsaturated organic compounds comprising at least a nitrile function. The invention provides a method for hydrocyanation of an ethylenically unsaturated hydrocarbon compound by reacting in liquid me... | 09/12/2006 |
| 7105467 | Nickel catalyzed cross-coupling reactions between organomagnesium compounds and anisole derivatives The present invention provides nickel catalysts and solvents which are useful in a cross-coupling reaction between an organomagnesium compound and an aromatic ether compound, such as an anisole derivative. ... | 09/12/2006 |
| 7098358 | Hydrocyanation method for ethylenically unsaturated organic compounds The invention concerns a method for hydrocyanation of ethylenically unsaturated organic compounds into compounds comprising at least a nitrile function. More particularly, it concerns a method for hydrocyanation of organic compounds comprising at least a ethylenical... | 08/29/2006 |
| 7094771 | Pharmaceutical composition for boron neutron capture therapy containing triphenylboroxin A pharmaceutical composition for boron neutron capture therapy (BNCT), and in particular for BNCT on hepatoma is disclosed. The pharmaceutical composition contains a therapeutically effective amount of triphenylboroxin (phenylboronic anhydride) as a boron source and... | 08/22/2006 |
| 7084293 | Process of synthesis of compounds having nitrile functions from ethylenically unsaturated compounds The present invention relates to a process of hydrocyanation of ethylenically unsaturated organic compounds to compounds having at least one nitrile function, particularly the hydrocyanation of diolefins such as butadiene, or of substituted olefins such as alkene ni... | 08/01/2006 |
| 7084294 | Method for the recycling of a Lewis acid A process for the recovery of a Lewis acid from a reaction mixture (I) which has been obtained in the hydrocyanation of an olefinically unsaturated compound to a nitrile which has a miscibility gap with water under certain pressure and temperature conditions, in the... | 08/01/2006 |
| 7067685 | Phosphonites, use thereof as ligand in transition metal complexes and method for production of nitriles The invention relates to phosphinites I of formulae (1) or (2), in which R1, R2, R5, R6, R7, R8, R9 independently represent hydrogen, an alkyl or alkylene group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms; R3 is H or methyl; R4 is i-prop... | 06/27/2006 |
| 7026473 | Process for the carbonylation of pentenenitrile Processes to prepare 5-cyanovaleric acid or its ester are provided, by carbonylation of a pentenenitrile, wherein pentenenitrile is reacted with carbon monoxide and water and/or an alcohol in the presence of a catalyst system. The catalyst system contains: ... | 04/11/2006 |
| 7022866 | Phosphonites Phosphonites I of the formula 1 or 2 where R1, R2 are each, independently of one another, hydrogen, an alkyl or alkylene group having from 1 to 8 carbon atoms or an alkoxy group having from 1 to 8 carbon at... | 04/04/2006 |
| 6953768 | Multi-component catalyst system for the polycondensation manufacture of polyesters This invention relates to new multi-component catalyst systems for the polycondensation of polyesters. More particularly, this invention pertains to novel multi-component, germanium based catalyst systems for the polycondensation of PET (polyethylene terephthalate) ... | 10/11/2005 |
| 6936171 | Process for catalyst recovery from hydrocyanation product mixtures Disclosed herein is a process for recovering diphosphite-containing compounds from a mixture comprising diphosphite-containing compounds and organic dinitriles and Lewis acid, using liquid-liquid extraction, wherein the molar ratio of organic mononitrile present to ... | 08/30/2005 |
| 6924345 | Phosphorus-containing compositions and their use in hydrocyanation, isomerization and hydroformylation reactions A polymeric, phosphorus-containing composition made by heating, in the presence of an initiator, preferably a free radical initiator, and optionally in the presence of one or more comonomers, at least one substituted phosphonylated 2,2′-dihydroxyl-1,1′-binaphtha... | 08/02/2005 |
| 6897329 | Process for the preparation of nickel/phosphorous ligand catalyst for olefin hydrocyanation A process for preparing a hydrocyanation catalyst comprising contacting a bidentate phosphorous-containing ligand with nickel chloride in the presence of a nitrile solvent and a reducing metal which is more electropositive than nickel the nickel chloride being intro... | 05/24/2005 |
| 6852661 | Catalyst comprising a metal complex of the VIII subgroup based on a phosphine amidite ligand and its utilization for hydroformylation and hydrocyanation A catalyst comprising at least one complex of a metal of transition group VIII comprising at least one monodentate, bidentate or multidentate phosphinamidite ligand in which the phosphorus atom and the oxygen atom of the phosphinamidite group form part of a 5- to 8-... | 02/08/2005 |
| 6812352 | Multidentate phosphite ligands, catalytic compositions containing such ligands, and catalytic processes utilizing such catalytic compositions Multidentate phosphite ligands are disclosed for use in reactions such as hydrocyanation and isomerization. The catalyst compositions made therefrom and the various catalytic processes which employ such multidentate phosphite ligands are also disclosed. In particula... | 11/02/2004 |
| 6737539 | Phosphonite ligands and their use in hydrocyanation Disclosed herein are processes for hydrocyanation and isomerization of olefins by using at least one multidentate phosphonite ligands, including organometallic phosphonite ligands with a Group VIII metal or Group VIII metal compound, and optionally, a Lewis acid pro... | 05/18/2004 |
| 6642405 | Method for producing acrylonitrile, catalyst for use therein and method for preparing the same For the production of acrylonitrile by ammoxidation of propylene, there is provided a process capable of giving a high yield and maintaining such an effect for a long period of time. In producing acrylonitrile by ammoxidation of propylene, a fluidized bed ... | 11/04/2003 |
| 6521778 | Catalyst comprising a complex of a metal from subgroup VIII based on a bidentate phosphonite ligand, and method for producing nitriles A catalyst which comprises at least one complex of a metal of subgroup VIII having at least one bidentate phosphonite ligand of the formula I ##STR1## or salts and mixtures thereof, a process for the preparation of mixtures of monoolefinic C5 -... | 02/18/2003 |
| 6486359 | Catalyst comprising a complex of a metal of subgroup viii based on a phosphinite ligand, and a method for hydroformylation The invention relates to a catalyst which comprises at least one complex of a metal of group VIII, which comprises at least one uni-, bi- or multidentate phosphinite ligand in which the phosphorus atom and the oxygen atom of the phosphinite group are part... | 11/26/2002 |
| 6469194 | Production of nitriles via hydrocyanation of ethylenically unsaturated organic compounds 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 ... | 10/22/2002 |
| 6380421 | Multidentate phosphite ligands, catalytic compositions containing such ligands and catalytic processes utilizing such catalytic compositions Hydrocyanation reactions employing multidentate phosphite ligands and multidentate phosphite ligands are disclosed. The ligands have phenyl containing substituents attached to the ortho position of the terminal phenol group and/or attached to the ortho po... | 04/30/2002 |
| 6242633 | Catalyst comprising at least one phosphonite ligand based nickel (O) complex and method for the production of nitriles A catalyst comprising at least one nickel(0) complex which comprises at least one mono-, bi- or multidentate phosphonite ligand of the formula I ##STR1## or salts and mixtures thereof, is prepared as described, and the catalysts are used to prepare mixtur... | 06/05/2001 |
| 6197992 | Monoolefinic C5 mononitriles, method for the production and the use thereof The disclosure is a process for preparing mixtures of monoolefinic C5 mononitriles having nonconjugated C.dbd.C-- and C.tbd.N bonding by catalytic hydrocyanation of a hydrocarbon mixture containing 1,3-butadiene, by first diminishing the propor... | 03/06/2001 |
| 6171996 | Hydrocyanation processes and multidentate phosphite ligand and nickel catalyst compositions therefor A process for hydrocyanation of an aliphatic monoethylenically unsaturated compound, in which the ethylenic double bond is not conjugated to any other unsaturated group in the molecule, or a monoethylenically unsaturated compound in which the ethylenic do... | 01/09/2001 |