Fluorine Containing Patents (Class 570/123)
  • Patent number: 10493443
    Abstract: A dehydrochlorination process is disclosed. The process involves contacting RfCHClCH2Cl with a chromium oxyfluoride catalyst in a reaction zone to produce a product mixture comprising RfCCl?CH2, wherein Rf is a perfluorinated alkyl group.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: December 3, 2019
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventor: Mario Joseph Nappa
  • Patent number: 10005704
    Abstract: The invention provides an improved process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) by reacting 2-chloro-3,3,3,-trifluoropropene (HCFO-1233xf) with hydrogen fluoride, in the presence of a fluorination catalyst, where by using 2-chloro-3,3,3, -trifluoropropene (HCFO-1233xf) of high purity, the need to add an oxidizing agent (typically chlorine) to keep the catalyst active can be avoided. The HCFC-244bb is then used as an intermediate in the production of 2,3,3,3-tetrafluoropropene-1 (HFO-1234yf).
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: June 26, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Robert C. Johnson, Daniel C. Merkel
  • Patent number: 9938208
    Abstract: The present invention relates to a process for preparing 1,1,1-trifluoro-2,3-dichloropropane which comprises contacting chlorine with 3,3,3-trifluoropropene in the presence of a catalyst to form 1,1,1-trifluoro-2,3-dichloropropane, wherein the catalyst comprises at least one metal halide, where the metal is a metal from Group 13, 14 or 15 of the periodic table or a transition metal or combination thereof.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: April 10, 2018
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Xuehui Sun, Mario Joseph Nappa
  • Patent number: 9428429
    Abstract: The present invention provides a method for producing a fluorine-containing alkane, which comprises reacting at least one fluorine-containing compound selected from the group consisting of chlorine-containing fluoroalkanes and fluorine-containing alkenes with hydrogen gas in the presence of catalysts, wherein two or more catalysts having different catalytic activities are used, and the fluorine-containing compound and hydrogen gas, which are starting materials, are sequentially brought into contact with the catalysts in the order of the catalyst having a lower catalytic activity followed by the catalyst having a higher catalytic activity. According to the present invention, in the method for producing a fluorine-containing alkane by using chlorine-containing fluoroalkane or fluorine-containing alkene as a starting material, and subjection it to a reduction reaction or a hydrogen addition reaction, the objective fluorine-containing alkane can be produced with high productivity.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: August 30, 2016
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yuko Shiotani, Kakeru Hanabusa, Takehiro Chaki, Kazuhiro Takahashi
  • Patent number: 9365472
    Abstract: A method for producing 1234Z from 1234E while generation of 245fa as a byproduct is suppressed. The method for producing cis-1,3,3,3-tetrafluoropropene includes putting trans-1,3,3,3-tetrafluoropropene into contact with a catalyst. The trans-1,3,3,3-tetrafluoropropene is put into contact with the catalyst at a reaction temperature of higher than or equal to 200° C. and lower than or equal to 550° C. for a contact time of longer than or equal to 0.01 seconds and shorter than or equal to 500 seconds.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: June 14, 2016
    Assignee: CENTRAL GLASS COMPANY, LTD.
    Inventors: Satoru Okamoto, Naoto Takada, Fuyuhiko Sakyu, Takamasa Kitamoto, Takuya Tonomura, Masatomi Kanai
  • Patent number: 9024092
    Abstract: Provided is a process for making 2-chloro-1,1,1,2-tetrafluoropropane. The process has the step of hydrofluorinating 2-chloro-3,3,3-trifluoropropene in the presence of a catalyst selected from the group consisting of SbCl3, SbCl5, SbF5, TiCl4, SnCl4, Cr2O3, and fluorinated Cr2O3.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: May 5, 2015
    Assignee: Honeywell International Inc.
    Inventors: Daniel C. Merkel, Robert C. Johnson, Hsueh Sung Tung
  • Patent number: 9024093
    Abstract: Methods for fluorinating organic compounds are described herein.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: May 5, 2015
    Assignee: President and Fellows of Harvard College
    Inventors: Tobias Ritter, Takeru Furuya, Pingping Tang
  • Patent number: 9024094
    Abstract: Fluorinated aromatic materials, their synthesis and their use in optoelectronics. In some cases, the fluorinated aromatic materials are perfluoroalkylated aromatic materials that may include perfluoropolyether substituents.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: May 5, 2015
    Assignee: The University of South Dakota
    Inventor: Haoran Sun
  • Publication number: 20150087868
    Abstract: The present invention relates to an apparatus for synthesizing F-18 labeled radioactive pharmaceutical. The apparatus for synthesizing F-18 labeled radioactive pharmaceutical includes an F-18 radioactive isotope supplier, a reagent supplier, a polymer precursor cartridge, a first heating unit, a polymer compound cartridge, a synthesizing container, a second heating unit, a water liquid container, a transmitting gas supplier, a cleansing liquid supplier, a connection tube, a plurality of control valves, and a controller.
    Type: Application
    Filed: May 11, 2012
    Publication date: March 26, 2015
    Applicant: SOGANG UNIVERSITY RESEARCH FOUNDATION
    Inventors: Cheol-Soo Lee, Dae-Yoon Chi, Eun-Young Heo, Jong-Min Kim, Byoung-Se Lee, Hee-Seup Kil
  • Publication number: 20150051426
    Abstract: To provide a method for stably storing tetrafluoropropene filled in a container for e.g. storage or transportation, without occurrence of reaction such as polymerization. A method for storing tetrafluoropropene in a gaseous-liquid state composed of a gas phase and a liquid phase in a closed container, wherein the oxygen concentration (content) in the above gas phase is adjusted to at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C.
    Type: Application
    Filed: October 27, 2014
    Publication date: February 19, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Masato Fukushima, Masaaki Tsuzaki, Maki Shigematsu
  • Publication number: 20150017064
    Abstract: A trifluoroethylene composition which is safe to handle and which can be safely stored and transported at pressures of up to 5.00 MPa. The composition comprises trifluoroethylene and HCl in a molar ratio trifluoroethylene:HCl from 10:90 to 63:37. When the composition is a compressed gas it has a pressure of from 0.50 to 5.00 MPa.
    Type: Application
    Filed: January 31, 2013
    Publication date: January 15, 2015
    Inventor: Emanuela Antenucci
  • Publication number: 20140367078
    Abstract: The present invention relates to the use of an anisotropic fluoropolymer having a different intrinsic thermal conductivity in at least two directions as a heat conducting material in a thermally conductive article, to a thermally conductive article comprising said anisotropic fluoropolymer and to a process for the production of said anisotropic fluoropolymer.
    Type: Application
    Filed: July 26, 2012
    Publication date: December 18, 2014
    Inventors: Wolfgang Bürger, Michael Wendlandt, Leonhard Schlichting
  • Publication number: 20140343203
    Abstract: Use of an atmospheric plasma for the surface treatment of inorganic particles selected from the group consisting of particles of metal oxides, particles of metal carbonates, particles of metal sulfates, particles of metal phosphates, acicular particles, platy particles and fibrous particles,with a fluorine-containing precursor.
    Type: Application
    Filed: December 5, 2012
    Publication date: November 20, 2014
    Inventors: Hans Edouard Miltner, Eliana Ieva, Valeriy Kapelyushko
  • Publication number: 20140249329
    Abstract: Methods of halogenating a carbon containing compound having an sp3 C—H bond are provided. Methods of fluorinating a carbon containing compound comprising halogenation with Cl or Br followed by nucleophilic substitution with F are provided. Methods of direct oxidative C—H fluorination of a carbon containing compound having an sp3 C—H bond are provided. The halogenated products of the methods are provided.
    Type: Application
    Filed: August 20, 2012
    Publication date: September 4, 2014
    Applicant: The Trustees of Princeton University
    Inventors: John T. Groves, Wei Liu
  • Patent number: 8815781
    Abstract: The present patent application introduces methods for generating mixture compound libraries from a drug lead. The mixture compound libraries are then screened for the discovery of modified drug lead compounds which possess desired improved drug properties. The process utilizes a non-selective reaction to modify the drug lead compound structure. Compared to existing methods of modifying a drug lead compound, this new method can modify more structural positions of a drug lead compound. As a consequence, there will be greater probability of finding a product with improved drug properties.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: August 26, 2014
    Inventor: Xueheng Cheng
  • Patent number: 8809451
    Abstract: According to the present invention, a polymer is obtained by polycondensation of a fluorinated dicarboxylic acid derivative of the general formula (M-1) or an acid anhydride of the fluorinated dicarboxylic acid with a polyfunctional compound having two to four reactive groups corresponding in reactivity to carbonyl moieties of the fluorinated dicarboxylic acid derivative or acid anhydride. [Chem. 134] AOCF2C-Q-CF2COA???(M-1) In the above formula, Q represents a divalent organic group having a substituted or unsubstituted aromatic ring; and A and A? each independently represent an organic group. This polymer exhibits a sufficiently low dielectric constant for use as a semiconductor protection film and has the capability of forming a film at a relatively low temperature of 250° C. or lower.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: August 19, 2014
    Assignee: Central Glass Company, Limited
    Inventors: Yoshimi Isono, Satoru Narizuka, Hidehisa Nanai, Kazuhiro Yamanaka
  • Publication number: 20140227184
    Abstract: Methods of halogenating a carbon containing compound having an sp3 C—H bond are provided. Methods of fluorinating a carbon containing compound comprising halogenation with Cl or Br followed by nucleophilic substitution with F are provided. Methods of direct oxidative C—H fluorination of a carbon containing compound having an sp3 C—H bond are provided. The halogenated products of the methods are provided.
    Type: Application
    Filed: August 20, 2012
    Publication date: August 14, 2014
    Applicant: The Trustees of Princeton University
    Inventors: John T. Groves, Wei Liu, Xiongyi Huang
  • Patent number: 8801966
    Abstract: Provided are liquid crystal compounds and mixtures incorporating the same. The liquid crystal compounds of the invention generally comprise a cyclopentane group and at least two other rings. In one embodiment, the liquid crystal compounds of the invention comprise a cyclopentane group and at least two other rings, one of which is a fused ring system.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: August 12, 2014
    Assignee: VVI Bright China Ltd.
    Inventors: Xinhua Chen, R. Amaranatha Reddy
  • Patent number: 8778223
    Abstract: Provided are compounds useful for use in liquid crystal mixtures to improve the properties of the mixture. In embodiments, the compound has two cyclohexyl ring and a tail containing one more fluorine atoms.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: July 15, 2014
    Assignee: LC Vision, LLC
    Inventor: Michael Wand
  • Patent number: 8759281
    Abstract: The present invention relates to fluorocarbon vectors for the delivery of antigens to immunoresponsive target cells. It further relates to fluorocarbon vector-antigen constructs and the use of such vectors associated with antigens as vaccines and immunotherapeutics in animals.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: June 24, 2014
    Assignee: Immune Targeting Systems Ltd.
    Inventors: Dominique Bonnet, Carlton B. Brown, Bertrand Georges, Philip J. Sizer
  • Patent number: 8754271
    Abstract: Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF?CH2 (1234yf). Three steps may be used in preferred embodiments in which a feedstock such as CCl2?CClCH2Cl is fluorinated to synthesize a compound such as CF3CCl?CH2. The CF3CCl?CH2 is preferably converted to CF3CFClCH3 (244-isomer) using a SbCl5 as the catalyst which is then transformed selectively to 1234yf. For the first step, a mixture of Cr2O3 and FeCl3/C is preferably used as the catalyst to achieve high selectivity to CF3CCl?CH2 (96%). In the second step, SbCl5/C is preferably used as the selective catalyst for transforming 1233xf to 244-isomer, CF3CFClCH3. The intermediates are preferably isolated and purified by distillation and used in the next step without further purification, preferably to a purity level of greater than about 95%.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: June 17, 2014
    Assignee: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Hsueh S. Tung, Michael Van Der Puy, Daniel C. Merkel, Jing Ji Ma, Cheryl L. Bortz, Barbara A. Light, Steven D. Phillips, Rajesh K. Dubey
  • Patent number: 8729320
    Abstract: Provided is a method for producing a difluorocyclopropane compound under milder reaction conditions and with high selectivity and high yield. The method for producing a difluorocyclopropane compound of the present invention is characterized by using sodium bromodifluoroacetate as a difluorocyclopropanation agent. With the disclosed method, a difluorocyclopropane compound can be produced under milder reaction conditions and with a higher conversion rate and a higher yield compared to conventional art. Further, by-products can be reduced significantly, thus allowing waste to be greatly reduced. Accordingly, the production method of the present invention is easy to implement industrially (can be employed on an industrial scale) and is thus extremely practical and useful.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: May 20, 2014
    Assignee: Central Glass Company, Limited
    Inventors: Hideki Amii, Kojun Oshiro, Yoshimichi Morimoto, Makoto Matsuura
  • Patent number: 8702815
    Abstract: The present invention relates to dyes of the general formula CAT+ Y? (I), where Y? is an anion selected from the group of the cyanoborates, fluoroalkylphosphates, fluoroalkylborates or imidates and CAT+ is a cation selected from the group of the azine, xanthene, polymethine, styryl, azo, tetrazolium, pyrylium, benzopyrylium, thiopyrylium, benzothiopyrylium, thiazine, oxazine, triarylmethane, diarylmethane, methine, acridine, quinoline, isoquinoline or quaternary azafluorenone dyes, for coloring plastics and plastic fibers, for the preparation of flexographic printing inks, as ball-point pen pastes, as stamp ink, for coloring leather and paper, for use in data acquisition systems, reprography, in ink microfilters, in photogalvanics, laser technology and the photo industry.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: April 22, 2014
    Assignee: Merck Patent GmbH
    Inventors: Nikolai (Mykola) Ignatyev, Urs Welz-Biermann, Helge Willner, Maik Finze, Eduard Bernhardt, Andriy Kucheryna
  • Patent number: 8642531
    Abstract: The present invention relates to fluorocarbon vectors for the delivery of influenza antigens to immunoresponsive target cells. It further relates to fluorocarbon vector-influenza antigen constructs and the use of such vectors associated with antigens as vaccines and immunotherapeutics in animals, including humans.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: February 4, 2014
    Assignee: Immune Targeting Systems Ltd.
    Inventors: Dominique Bonnet, Carlton B. Brown, Bertrand Georges, Philip J. Sizer
  • Patent number: 8623233
    Abstract: Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of Z-1,1,1,4,4,4-hexafluoro-2-butene, trans-1,2-dichloroethylene and 1,1,1,3,3-pentafluorobutane. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: January 7, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Mark L. Robin, Joan Ellen Bartelt
  • Patent number: 8618338
    Abstract: In this invention we are disclosing a process for the synthesis of hydrocchlorofluoro olefins (HCFO) and/or hydrofluoroolefins (HFO). The process is based on the gas phase, noncatalytic fluorination of hydrochlorofluoropropenes to form hydrofluoropropenes.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: December 31, 2013
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen
  • Patent number: 8614360
    Abstract: The invention relates to new processes for preparation of 18F-fluoroalkyl halides suitable for use in labelling of Positron Emission Tomography (PET) radiotracers. The process of preparation comprises the step of reacting a 18F-fluoroacylhalide with Wilkinson's catalyst.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: December 24, 2013
    Assignee: Hammersmith Imanet Limited
    Inventor: Erik Arstad
  • Patent number: 8575407
    Abstract: A support of metal oxyfluoride or metal halide for a metal-based hydrogenation catalyst useful in hydrogenating fluoroolefins is provided.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: November 5, 2013
    Assignee: Honeywell International Inc.
    Inventors: Haiyou Wang, Hsueh Sung Tung
  • Patent number: 8563789
    Abstract: In this invention we are disclosing a process for the synthesis of hydrocchlorofluoro olefins (HCFO) and/or hydrofluoroolefins (HFO). The process is based on the steps of fluorination of hydrochloropropenes or hydrochloropropanes to form hydrochlorofluoropropenes and/or hydrofluoropropenes, followed by gas phase, catalytic fluorination of the hydrochlorofluoropropenes to form hydrofluoropropenes.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: October 22, 2013
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen
  • Patent number: 8524104
    Abstract: Fire extinguishing compositions and methods of extinguishing a fire comprising compounds of formula (I) where Rf is a fluorocarbon group. The compounds and compositions described herein are useful as intermediates in the preparation of or as additives to AFFF (aqueous film forming foam) formulations used for the extinguishment of fuel and solvent fires.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: September 3, 2013
    Assignee: Ansul, Incorporated
    Inventor: Jeffrey D. Michael
  • Patent number: 8470199
    Abstract: The invention provides a liquid crystal compound having a high stability to heat, light or the like, a nematic phase in a wide temperature range, a small viscosity, a suitable optical anisotropy (especially, a relatively small optical anisotropy), a large elastic constant K33 and a suitable dielectric anisotropy (especially, a relatively large dielectric anisotropy), which is represented by formula (1-1). For example, R1 and R2 are alkyl having 1 to 10 carbons, alkenyl having 2 to 10 carbons or alkoxy having 1 to 9 carbons; the ring A1 and the ring A2 is 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene; and m and n are 0, 1, 2 or 3, and the sum of m and n is 3.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: June 25, 2013
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventor: Masahide Kobayashi
  • Patent number: 8471078
    Abstract: A method of providing a blend of tetra- and/or pentafluoroalkanes comprising hydrogenating a pentafluoropropene.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: June 25, 2013
    Assignee: Mexichem Amanco Holding S.A. de C.V.
    Inventors: Robert E. Low, Andrew P. Sharratt
  • Publication number: 20130150634
    Abstract: Disclosed is a process for making the compound 1,1,2-trichloro-3,3,3-trifluoro-propane (233da) by the catalytic fluorination of 1,1,1,2,3,3-hexachloropropane. 233da is a starting material used in the production cis-1-chloro-3,3,3-trifluoropropene (cis-1233zd).
    Type: Application
    Filed: November 12, 2012
    Publication date: June 13, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventor: Honeywell International Inc.
  • Patent number: 8461401
    Abstract: Hexafluoro-2-butene (HFO-1336) is a low global warming potential blowing agent, refrigerant and solvent. This invention provides a method for making the compound, including the cis-isomer, from the readily available raw materials, carbon tetrachloride and 3,3,3-trifluoropropene. The trans-isomer formed in the process can be isomerized into cis-isomer by the use of an isomerization catalyst.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: June 11, 2013
    Assignee: Honeywell International Inc.
    Inventors: Hsueh Sung Tung, Haiyou Wang
  • Patent number: 8431693
    Abstract: The present invention relates to processes and reagents for oligonucleotide synthesis and purification. One aspect of the present invention relates to compounds useful for activating phosphoramidites in oligonucleotide synthesis. Another aspect of the present invention relates to a method of preparing oligonucleotides via the phosphoramidite method using an activator of the invention. Another aspect of the present invention relates to sulfur-transfer agents. In a preferred embodiment, the sulfur-transfer agent is a 3-amino-1,2,4-dithiazolidine-5-one. Another aspect of the present invention relates to a method of preparing a phosphorothioate by treating a phosphite with a sulfur-transfer reagent of the invention. In a preferred embodiment, the sulfur-transfer agent is a 3-amino-1,2,4-dithiazolidine-5-one. Another aspect of the present invention relates to compounds that scavenge acrylonitrile produced during the deprotection of phosphate groups bearing ethylnitrile protecting groups.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: April 30, 2013
    Assignee: Alnylam Pharmaceuticals, Inc.
    Inventors: Muthiah Manoharan, Michael F. Jung, Kallanthottathil G. Rajeev, Rajendra K. Pandey, Gang Wang
  • Patent number: 8426657
    Abstract: The present invention relates to compositions and processes of using perfluoropolyether to maintain or improve the oil return, lubrication, cooling capacity, or energy efficiency of a refrigeration, air conditioning or heat transfer system.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 23, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Thomas J. Leck, Thomas Frank Saturno, Gregory A. Bell
  • Patent number: 8426655
    Abstract: Hexafluoro-2-butene (HFO-1336) is a low global warming potential blowing agent, refrigerant and solvent. This invention provides methods for making the compound, including the cis-isomer, from the readily available raw materials, carbon tetrachloride and ethylene. The trans-isomer formed in the process can be isomerized into cis-isomer by the use of an isomerization catalyst.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: April 23, 2013
    Assignee: Honeywell International Inc.
    Inventors: Hsueh Sung Tung, Haiyou Wang
  • Patent number: 8404907
    Abstract: Disclosed is a process for making one isomer of CF3CH?CHCl. More particularly, the invention comprises the production of CF3C?CCl and its selective reduction to cis-1-chloro-3,3,3-trifluoropropene (CF3CH?CHCl).
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: March 26, 2013
    Assignee: Honeywell International Inc.
    Inventors: Haridasan K. Nair, Andrew Joseph Poss, Rajiv Ratna Singh, Michael Van Der Puy, Ryan J. Hulse
  • Patent number: 8399710
    Abstract: An alkali metal fluoride dispersion of an alkali metal fluoride and an aprotic organic solvent is obtainable by (A) separating a liquid phase from an alkali metal fluoride dispersion comprising an alcohol solvent and an alkali metal fluoride, and mixing the separated liquid phase with an aprotic organic solvent having a boiling point of 85° C. or higher at normal pressure; (B) obtaining a mixture containing the alkali metal fluoride by (b1) concentrating the mixture containing the alkali metal fluoride to obtain a concentrated fraction and a concentrated residue; (b2) mixing a residue of the alkali metal fluoride dispersion with the concentrated fraction obtained in (b1); and (b3) separating a liquid phase from the mixture containing an alkali metal fluoride obtained in (b2) and mixing the separated liquid phase with the concentrated residue; and (C) removing the alcohol solvent from the mixture containing the alkali metal fluoride.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: March 19, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Koji Hagiya
  • Patent number: 8383867
    Abstract: Disclosed is a method for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I): CF3CFnCHmXa-m??(I) to at least one compound of formula (II) CF3CZCHZ??(II). where each X is independently Cl, F, I or Br; each Z is independently H or F; n is 1 or 2; m is 1, 2 or 3, provided that when n is 1, m is 1 or 2; a is 2 or 3, and a-m?0. Certain embodiments include the step of reacting fluorinated C2 olefin, such as tetrafluoroethylene, with a Cl addition agent under conditions effective to produce a compound of formula (I).
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: February 26, 2013
    Assignee: Honeywell International Inc.
    Inventors: Sudip Mukhopadhyay, Haridasan K. Nair, Rajesh K. Dubey, Rajiv R. Singh, George A. Shia
  • Patent number: 8378061
    Abstract: Provided are films made from copolyesters having improved oil repellency as compared to conventional copolyesters. The copolyesters are derived from certain perfluorinated monomers.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: February 19, 2013
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
  • Patent number: 8350099
    Abstract: Disclosed are fluorovinyl ether functionalized aromatic diesters and derivatives thereof. The compounds disclosed have utility as functionalized monomers and comonomers in polyesters, polyamides, and the like. It has been found that incorporation of the monomers into polymers provides improved soil resistance to shaped articles produced from the polymers.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: January 8, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Neville Everton Drysdale, Surbhi Mahajan, Kenneth Gene Moloy, Fredrik Nederberg, Joel M. Pollino, Joachim C. Ritter
  • Patent number: 8344192
    Abstract: The invention provides a technique enabling the separation and recovery of an unreacted fluoromonomer from an aqueous fluoropolymer dispersion obtained by emulsion polymerization, without using any extraction solvent, and enabling the prevention of a hydrolysis of —SO2F and a like sulfonic acid precursor functional group convertible to sulfonic acid group. Thus, the invention provides a recovering method fluoromonomer having a sulfonic acid precursor functional group convertible to a sulfonic acid group and remaining unreacted from an aqueous fluoropolymer dispersion obtained by emulsion polymerization of the fluoromonomer, wherein the unreacted fluoromonomer is recovered from the aqueous fluoropolymer dispersion by evaporation, wherein the aqueous fluoropolymer dispersion has an acidic pH.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: January 1, 2013
    Assignee: Daikin Industries, Ltd.
    Inventors: Tadaharu Isaka, Tadashi Ino, Masaharu Nakazawa, Masahiro Kondo
  • Patent number: 8318656
    Abstract: Production processes and systems are provided that include reacting halogenated compounds, dehalogenating compounds, reacting alcohol's, reacting olefins and a saturated compounds, reacting reactants having at least two —CF3 groups with reactants having cyclic groups, RF-compositions such as RF-intermediates, RF-surfactants, RF-monomers, RF-monomer units, RF-metal complexes, RF-phosphate esters, RF-glycols, RF-urethanes, and or RF-foam stabilizers. The RF portion can include at least two groups —CF3 groups, at least three —CF3 groups, and/or at least two —CF3 groups and at least two —CH2 groups. Detergents, emulsifiers, paints, adhesives, inks, wetting agents, foamers, and defoamers including the Rf-surfactant composition are provided. Acrylics, resins, and polymers are provided that include a RF-monomer unit. Compositions are provided that include a substrate having a RF-composition thereover.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: November 27, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Janet Boggs, Stephan Brandstadter, John Chien, Vimal Sharma, E. Bradley Edwards, Vicki Hedrick, Andrew Jackson, Gregory Leman, Edward Norman, Robert Kaufman
  • Patent number: 8299309
    Abstract: Described herein is a process for the manufacture of hydrofluoroalkanols of the structure RfCFClCHROH. Also described herein are methods of manufacturing hydrofluoroalkenes of the structure RfCF?CHR from halofluorocarbons of the structure RfCFX2. In particular, 2,3,3,3,-tetrafluoro-1-propene may be manufactured with this process. Also described are compounds of the formula RfCFClCHROC(?O)R?.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: October 30, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Mario Joseph Nappa, Xuehui Sun, Lev Moiseevich Yagupolskii, Andrey Anatolievich Filatov, Vladimir Nikolaevich Boiko, Yurii Lvovich Yagupolskii
  • Patent number: 8288492
    Abstract: Oligomers of perfluoro(methyl vinyl ether) with vinylidene fluoride or tetrafluoroethylene are disclosed that contain 40-90 mole percent copolymerized units of vinylidene fluoride or tetrafluoroethylene and 10-60 mole percent copolymerized units of perfluoro(methyl vinyl ether), said oligomers having two functional endgroups and having a number average molecular weight between 1000 and 25,000.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: October 16, 2012
    Assignees: E I du Pont de Nemours and Company
    Inventors: Ming-Hong Hung, Bruno Ameduri, Cyrille Andre Jean-Marie Boyer
  • Patent number: 8262924
    Abstract: Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of E-1,1,1,4,4,4-hexafluoro-2-butene with methyl formate, n-pentane, 2-methylbutane, trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, n-butane or isobutane. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: September 11, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventor: Mark L. Robin
  • Patent number: 8197857
    Abstract: A method for the elimination of carbon dioxide from waste gases includes the following steps. First, waste gases, which include carbon dioxide, are provided from a source for waste gases. Next, the waste gases are contacted with an absorbent composition that includes perfluorodecalin solution. The waste gases, especially the carbon dioxide, are then absorbed by the absorbent composition. The absorbent composition thereby absorbs the waste gases to eliminate the carbon dioxide.
    Type: Grant
    Filed: June 6, 2009
    Date of Patent: June 12, 2012
    Inventors: Lawrence V. Dressler, Alexander Chirkov
  • Patent number: 8188323
    Abstract: The present invention relates to compositions and processes of using perfluoropolyether to maintain or improve the oil return, lubrication, cooling capacity or energy efficiency of the refrigeration, air conditioning and heat transfer system.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: May 29, 2012
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Thomas J. Leck, Thomas Frank Saturno, Gregory A. Bell
  • Publication number: 20120108858
    Abstract: The invention relates to a device for processing radioisotopes and production of radiopharmaceuticals, for example, 18F-2 Deoxy-2-Fluoro-D-Glucose (FDG), for Positron Emission Tomography (PET). Use of a tilting and rotating reactor with optimized geometry allows for decreased processing time and increased efficiency. Reagent vials are separated from the reactor module and placed in a separate enclosure allowing safe reloading of the system and production of multiple batches with minimal operator exposure to radiation. Reagent vials enclosure is protected from the environment and filled with purified air to reduce risk of contamination. Product and reagents pathways are sealed from the environment and are sterilized.
    Type: Application
    Filed: December 30, 2010
    Publication date: May 3, 2012
    Inventor: MAXIM KISELEV