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| Number | Title | Issue Date |
| 7868213 | 1,4-bis(bromodifluoromethyl) tetrafluorobenzene and producing method thereof A method for producing 1,4-bis(bromodifluoromethyl)tetrafluorobenzene (BFTFB) is disclosed. The target compound is predicted as a very potent monomer for low dielectric constant material. This method comprises the following steps: (a) mixing 1,4-bis(bromodifluoromet... | 01/11/2011 |
| 7544846 | Method for producing 1,4-bis(difluoromethyl)tetrafluorobenzene A method for producing 1,4-bis(difluoromethyl)tetrafluorobenzene is disclosed, which has the following steps: (a) mixing 1,4-bis(dichloromethyl)tetrafluorobenzene, a catalyst, an aprotic polar solvent, and an alkali metal fluoride to form a reaction mixture; (b) hea... | 06/09/2009 |
| 7405331 | High-purity (fluoroalkyl)benzene derivative and process for producing the same The process for producing a (fluoroalkyl)benzene derivative according to the present invention comprises a step of reducing the total content of group 3 to group 12 transition metals in an alkylbenzene derivative to 500 ppm or less in terms of metal atoms; a step of... | 07/29/2008 |
| 7247733 | Process for preparing nuclear-fluorinated aromatics The present invention relates to the preparation of nuclear-fluorinated aromatics by reacting, with a fluoride at 40 to 260° C., an aromatic compound substituted at the nucleus with halogen that is exchangeable for fluorine in the presence of at least one compound ... | 07/24/2007 |
| 7214838 | Method for transferring TCPX into TFPX A method for transferring TCPX (α, α, α′, α′-tetrachloro-p-xylene) into TFPX (α, α, α′, α′-tetrafluoro-p-xylene) is disclosed, which comprises the following steps: (a) providing a first reactant comprising TFPX; (b) mixing the first reactant with alk... | 05/08/2007 |
| 7173159 | Method for synthesizing TFPX A method for the synthesis of TFPX (α, α, α′, α′-tetrafluoro-p-xylene) is disclosed, which comprises the following steps: (a) providing a sulpholane solution comprising TCPX (α, α, α′, α′-tetrachloro-p-xylene); (b) mixing the sulpholane solution with... | 02/06/2007 |
| 7154006 | Preparation of fluorinated anilines The invention relates to a process for preparing fluorinated anilines starting from the corresponding chlorinated anilines, and also to the use of the fluorinated anilines. ... | 12/26/2006 |
| 7145046 | Production of fluorine compounds Inorganic and organic compounds containing fluorine can be produced, for example, from corresponding chlorine-containing compounds by chlorine/fluorine exchange using fluorinating agents. Monocyclic or bicyclic compounds containing at least two nitrogen atoms, at le... | 12/05/2006 |
| 7091362 | Process for preparing nuclear-fluorinated aromatics The present invention relates to the preparation of nuclear-fluorinated aromatics by reacting, with a fluoride at 40 to 260° C., an aromatic compound substituted at the nucleus with halogen that is exchangeable for fluorine in the presence of at least one compound ... | 08/15/2006 |
| 6944563 | On-line compositional allocation A method and a system to provide allocation of mixed flow to individual sources in oil and gas production systems by measuring mixed flow; analyzing the composition; accessing the data for the mixed flows; and calculating the flow from each source with an allocation... | 09/13/2005 |
| 6916457 | Preparation and use of non-chrome catalysts for Cu/Cr catalyst applications A non-chrome, copper-containing catalyst, Cu—Al—O and method of preparing the same are provided wherein the Cu—Al—O catalyst is prepared by the co-precipitation of copper nitrate (Cu(NO3)2) and sodium aluminate (Na2Al2 | 07/12/2005 |
| 6784327 | Process for the production of fluorinated organic compounds and fluorinating agents A process for the production of a fluorinated organic compound, characterized by fluorinating an organic compound having a hydrogen atoms using IF5; and a novel fluorination process for fluorinating an organic compound having a hydrogen atoms by using a f... | 08/31/2004 |
| 6395700 | Process for the preparation of compounds having -CH2-CHF-groups Compounds each having a --CH2 --CHF-- group and a number of carbon atoms of 4 or above are prepared by hydrogenating a compound having a --CCl.dbd.CF-- group and a number of carbon atoms of 4 or above in the presence of a noble metal catalyst i... | 05/28/2002 |
| 6284933 | TFPX synthesis A method of making TFPX using an SN 2 type nucleophilic displacement reaction. The method includes reacting a nucleophilic fluorine molecule with a nonfluorinated-tetrahalo-p-xylene molecule. Exemplary nucleophilic fluorine molecules include, b... | 09/04/2001 |
| 6166272 | Molybdenum trioxide catalyzed fluorination reactions Disclosed is a method of fluorinating a substrate having the general formula ##STR1## where each R is independently selected from halogen, alkyl from C1 to C12, aryl from C6 to C12, alkoxide from C1 | 12/26/2000 |
| 6166271 | Method for synthesis of hydrocarbon compounds containing fluorine on at least one alkyl chain carbon The invention features a useful method for the synthesis of fluorinated derivatives. It is characterized in that it comprises at least one step in which a substrate comprising one sp3 hybridizing halogenophore carbon bearing at least two haloge... | 12/26/2000 |
| 6093858 | Method for producing bis (trifluoromethyl) benzene The invention relates to a method for producing a bis(trifluoromethyl)benzene. This method includes the steps of (a) chlorinating a compound represented by the general formula (1) by chlorine, thereby to produce a trichloromethyltrifluoromethylbenzene; an... | 07/25/2000 |
| 5487846 | Rust inhibitor A general-purpose organic rust initiator which can effectively prevent corrosion of metals comprising a compound of formula (1): ##STR1## wherein R1 is a perfluoroalkyl group having 1 to 6 carbon atoms; R2 is a hydrogen atom or ... | 01/30/1996 |
| 5334788 | Reaction of substrate compounds with fluorine in an eductor Substrate compounds are reacted by passing them through an eductor with fluorine gas optionally in the presence of a liquid medium and preferably in a loop reactor with cooling means thereby providing rapid but controlled reaction suitable for industrial ... | 08/02/1994 |
| 5233104 | Process for trifluoromethylation of aromatic compounds Aromatic compound are trifluoromethylated by reaction in the vapor phase with a dihalodifluoromethane in the presence of a copper/copper fluoride catalyst.... | 08/03/1993 |
| 5177275 | Reaction of substrate compounds with fluorine in an eductor Substrate compounds are reacted by passing them through an eductor with fluorine gas optionally in the presence of a liquid medium and preferably in a loop reactor with cooling means thereby providing rapid but controlled reaction suitable for industrial ... | 01/05/1993 |
| 4966988 | Process for preparing acetonitrile 3-trifluoromethyl benzene A method is provided for forming (3-trifluoromethylphenyl)acetonitrile through the intermediate ,,-trifluoro-'-chloro-m-xylene. This intermediate is formed by selective chlorination of ,,'-trichloro-m-... | 10/30/1990 |
| 4876404 | Preparation of dichlorotrifluoromethyltoluenes including novel isomers Dichlorotrifluoromethyltoluenes useful in producing some medicines and agricultural chemicals are formed with good yields by reacting dichlorotrichloromethyltoluenes with hydrogen fluoride usually at 0°-100° C. under pressure of 3-20 kg/cm2. ... | 10/24/1989 |
| 4780559 | Process for preparing organic fluorides A method for the preparation of organic fluorides which comprises reacting a quaternary phosphonium fluoride or bifluoride with an organic substrate having at least one atom or group capable of being replaced by a fluorine atom.... | 10/25/1988 |
| 4680406 | Process for fluorinating halogenated organo-compounds A novel apparatus and a process for fluorinating organic compounds from halogen-containing organic compounds is disclosed.... | 07/14/1987 |
| 4631151 | Method for production of fluorine-containing aromatic derivative A fluorine-containing aromatic derivative is produced by causing a di(haloacyl)peroxide to react upon benzene, a mono-substituted benzene, naphthalene, or a mono-substituted naphthalene thereby introducing an X(CF2)n -group into the ... | 12/23/1986 |
| 4582935 | Process for producing meta-aminobenzotrifluoride Disclosing a process for making meta-aminobenzotrifluoride comprising: reacting meta-nitrobenzotrichloride with hydrogen fluoride in the presence of ammonium ions under a pressure of at least about 35 psig and at a temperature of at least about 55° C. for suf... | 04/15/1986 |
| 4575571 | Process for the simultaneous halogenation and fluorination of aromatic derivatives A process for the stimulaneous halogenation and fluorination of aromatic derivatives substituted by at least one group containing a halogenoalkyl unit. The aromatic derivative is reacted with the halogen in liquid hydrofluoric acid. The products obtained ... | 03/11/1986 |
| 4568700 | Process for the production of halomethylating agents which are of low volatility There is provided a process for the production of halomethylating agents which are of low volatility; and a process for the halomethylation of aromatic substrates and aromatic polymeric substances. Among products produced from the halomethylaryl polymers ... | 02/04/1986 |
| 4513154 | Process for consecutive competitive gas phase reaction A process for consecutive-competitive gas phase halogenation of organic compounds, i.e. alkanes, alkenes and benzene, alkyl benzenes and alkenyl benzenes containing labile hydrogens and having no more than 12 and 9 carbon atoms, respectively, in a thin re... | 04/23/1985 |
| 4462937 | Process for the preparation of trifluoromethylbenzenes from the corresponding trichloro- or tribromo-methylbenzenes This invention relates to a continuous process for the preparation of trifluoromethylbenzenes from the corresponding trichloro- or tribromo-methylbenzenes with hydrofluoric acid. The process is characterized by passing an ascending stream of gaseous hydro... | 07/31/1984 |
| 4438088 | Preparation of antimony trifluorodichloride and fluorination of fluorinatable hydrocarbons and halocarbons therewith The invention disclosed herein is a method for preparing antimony trifluorodichloride whereby antimony trifluoride is dispersed in a liquid organic medium to form a slurry and contacted with chlorine. The invention further comprises a process for fluorina... | 03/20/1984 |
| 4436942 | Process for the catalyzed fluorination of haloalkyl aromatic compounds A process for the preparation of compounds of the formula ##STR1## which comprises contacting compounds of the formula ##STR2## wherein n is 0 to 5, and m is 1 to 3 in the vapor phase, with hydrogen fluoride in the presence of a granular, porous... | 03/13/1984 |
| 4400563 | Process for preparing perfluoro(lower)alkylbenzenes and their derivatives A process for preparing perfluoro(lower)alkylbenzenes and derivatives thereof which comprises contacting a lower alkylbenzene or the corresponding derivative with hydrogen fluoride in the presence of chlorine in the gaseous phase at an elevated temperatur... | 08/23/1983 |
| 4393257 | Process for preparing benzotrifluoride and its derivatives A process for preparing benzotrifluoride or derivatives thereof by contacting benzotrichloride or the corresponding derivatives with hydrogen fluoride in a gaseous phase in the absence of any catalyst, the contact being carried out in the presence of chlo... | 07/12/1983 |
| 4367350 | Process for preparing perfluoro(lower)alkyl-benzenes and their derivatives A process for preparing perfluoro(lower)alkylbenzenes and derivatives thereof which comprises contacting a lower alkylbenzene or the corresponding derivative with hydrogen fluoride in the presence of chlorine in a gaseous phase at an elevated temperature ... | 01/04/1983 |
| 4365101 | Process for preparing benzotrifluoride and its derivatives A process for preparing benzotrifluoride or derivatives thereof by contacting benzotrichloride or the corresponding derivative with hydrogen fluoride in a gaseous phase in the absence of any catalyst, the contact being carried out in the presence of chlor... | 12/21/1982 |
| 4362884 | Silacrown ethers, method of making same, and use as phase-transfer catalysts Organosilicon compounds referred to as silacrown ethers or "silacrowns" are of the general formula: ##STR1## where R1 and R2 are organic radicals or hydrogen and n is an integer between 4 and 10 inclusive. Silacrown ethers are p... | 12/07/1982 |
| 4242286 | Process for preparing benzotrifluoride and its derivatives A process for preparing bentotrifluoride or its derivatives by contacting benzotrichloride or its derivatives corresponding thereto with hydrogen fluoride in a gaseous phase, characterized in that the contact is carried out in the presence of aluminum flu... | 12/30/1980 |
| 4183873 | Liquid phase fluorination process A process for the preparation of compounds of the formula: comprises contacting compounds of the formula: in the liquid phase, with hydrogen fluoride in the presence of molybdenum chloride wherein Ar is aryl R is a substituent on the aryl nucleus selected from the ... | 01/15/1980 |
