Patents Represented by Attorney Jay P. Friedenson
  • Patent number: 6203671
    Abstract: A process for preparing a fluorinated product comprising: (a) reacting a molar excess of an aliphatic starting compound in liquid phase with fluorine in the presence of actinic radiation to produce a product mixture containing a fluorinated product having at least one hydrogen atom; and (b) recovering the fluorinated product from the product stream.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: March 20, 2001
    Assignee: AlliedSignal Inc.
    Inventor: Timothy R. Demmin
  • Patent number: 6200495
    Abstract: Premixes of a polyol suitable for polyurethane or polyisocyanurate foam preparation, 1,1-dichloro-1-fluoroethane and optionally additives and/or auxiliary blowing agents which do not require a stabilizer to inhibit reaction between the fluorocarbon and the polyol. These mixtures are useful for polyurethane and polyisocyanurate foam preparation.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: March 13, 2001
    Assignee: AlliedSignal Inc.
    Inventors: Earl A. E. Lund, Robert G. Richard, Ian R. Shankland, David P. Wilson
  • Patent number: 6153802
    Abstract: A system and process for producing a fluorinated organic compound, said process comprising (a) reacting an organic compound with a fluorinations agent in the presence of a liquid-phase fluorinations catalyst to produce a product stream; (b) scrubbing said product stream to remove a substantial portion of said catalyst to form a low-catalyst content product stream; and (c) recovering said fluorinated organic compound from said low-catalyst content stream.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: November 28, 2000
    Assignee: AlliedSignal Inc.
    Inventor: Yuon Chiu
  • Patent number: 6132679
    Abstract: A method for aerating an ethylene oxide-sterilized article, said method comprising exposing said article to at least one co-adsorbate under conditions such that said co-adsorbate remains vaporized, said co-adsorbate having a partial pressure under said conditions sufficient to displace at least a portion of ethylene oxide adsorbed by said article.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: October 17, 2000
    Assignee: AlliedSignal, Inc.
    Inventor: Stephen A. Conviser
  • Patent number: 6113803
    Abstract: The present invention provides refrigerant blends which are replacements for chlorodifluoromethane (HCFC-22). The present blends have refrigeration characteristics which are similar to HCFC-22. The blends comprise from about 10 to about 90 weight percent of a first component selected from the group consisting of 1,1,1-trifluoroethane, difluoromethane, propane, and mixtures thereof; from about 1 to about 50 weight percent of a second component selected from the group consisting of hydrofluorocarbon having 1 to 3 carbon atoms, fluorocarbon having 1 to 3 carbon atoms, inorganic compound, and mixtures thereof having a boiling point at atmospheric pressure in the range from about -90 degrees C to less than -50 degrees C; and from about 1 to about 50 weight percent of a third component which is hydrofluorocarbon having 1 to 3 carbon atoms, other than 1,1,1-trifluoroethane, having a boiling point at atmospheric pressure in the range from about -50 degrees C to about -10 degrees C.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: September 5, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Robert G. Richard, Ian Robert Shankland, Rajiv Ratna Singh
  • Patent number: 6114269
    Abstract: A chemically modified mica composite formed by heating a trioctahedral mica in an aqueous solution of sodium chloride having a concentration of at least 1 mole/liter at a temperature greater than 180 degrees Centigrade for at least 20 hours, thereby replacing exchangeable ions in the mica with sodium. Formation is accomplished at temperatures and pressures which are easily accessed by industrial equipment. The reagent employed is inexpensive and non-hazardous, and generates a precipitate which is readily separated from the modified mica.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: September 5, 2000
    Inventors: Stephen Frederic Yates, Irene DeFilippi, Romulus Gaita, Abraham Clearfield, Lyudmila Bortun, Anatoly Bortun
  • Patent number: 6103684
    Abstract: The invention relates to novel compositions of 1-bromopropane and at least one organic solvent selected from the group consisting of methanol, ethanol, 1-propanol, 2-propanol, 2-methyl-2-propanol, 2,2,2-trifluoroethanol, tetrahydrofuran, nitromethane, ethyl acetate, acetonitrile, hexane, 1,3-dioxolane, 1-chloro-2-methylpropane, 1,1,1,2,3,4,4,5,5, 5-decafluoropentane, methyl ethyl ketone and cyclohexane and more particularly to azeotrope-like compositions based on these compounds which are useful as solvents in refrigeration flushing, oxygen system cleaning and vapor degreasing applications.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: August 15, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Alagappan Thenappan, Leonard Michael Stachura, Martin Richard Paonessa, Kane David Cook
  • Patent number: 6099694
    Abstract: The invention relates to an improvement in a process in which chlorine and difluoromethane are present in a distillation column, for example, a fluorination reaction. By controlling the chlorine feed such that the concentration of chlorine relative to difluoromethane in the distillation column is maintained below about 22 weight percent (the flammability threshold for chlorine in a mixture of difluoromethane and chlorine), formation of a flammable difluoromethane/chlorine mixture may be minimized or avoided. The invention is particularly useful in a process for the preparation of difluoromethane wherein at least one distillation column separates difluoromethane from unreacted starting materials such as methylene chloride, hydrogen fluoride and monochloromonofluoromethane.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: August 8, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Hang Thanh Pham, Rajiv R. Singh, Addison M. Smith, David P. Wilson, Raymond Hilton Percival Thomas, Gustavo Cerri
  • Patent number: 6086788
    Abstract: The invention relates to the addition of .alpha.-methyl styrene, isobutanol and/or isopropanol to reduce vapor pressure, improve k-factor, enhance the solubility of the blowing agent in the premix and/or improve the processing characteristics of polyurethane and polyisocyanurate closed-cell foams prepared with a blowing agent comprising a hydrofluorocarbon selected from the group consisting of 1,1,1,3,3-pentafluoropropane, 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: July 11, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Mary Charlotte Bogdan, Leslie Bruce Bement, Barbara Ruth Decaire, Dennis Paul Konopa, Harold John Kieta, Rajiv Ratna Singh
  • Patent number: 6079482
    Abstract: An improved thermal energy storage system and a process for thermal energy storage and transfer are disclosed. The cooling medium, a clathrate forming mixture, comprises water, and a hydrofluorocarbon having at least three carbon atoms and a molecular diameter less than about 7 .ANG.. Preferably the hydrofluorocarbon is selected from hydrofluoropropanes and more preferably is selected from the group consisting of CHF.sub.2 CHFCHF.sub.2, CF.sub.2 HCF.sub.2 CH.sub.2 F, CF.sub.3 CHFCH.sub.2 F, CF.sub.3 CH.sub.2 CF.sub.2 H, CF.sub.3 CF.sub.2 CH.sub.3, CF.sub.3 CHFCF.sub.2 H, CF.sub.3 CH.sub.2 CF.sub.3, CF.sub.3 CF.sub.2 CF.sub.2 H, CH.sub.2 FCF.sub.2 CF.sub.3, CHF.sub.2 CF.sub.2 CH.sub.3, CF.sub.3 CF.sub.2 CF.sub.2 CH.sub.3, CF.sub.3 CF.sub.2 CF.sub.2 CF.sub.2 H, and CF.sub.3 CFHCFHCF.sub.3.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: June 27, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Rajiv R. Singh, Raymond H. P. Thomas, D. P. Wilson, R. Robinson
  • Patent number: 6080899
    Abstract: A process for producing a fluorinated organic compound comprising: (a) reacting an organic starting material with hydrogen fluoride in the presence of a fluorination catalyst and an HFC reaction solvent to produce a product stream containing the fluorinated organic compound wherein the reaction solvent has a boiling point higher than that of the fluorinated organic compound; and (b) recovering the fluorinated organic compound from the product stream.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: June 27, 2000
    Assignee: AlliedSignal Inc.
    Inventors: David E. Bradley, Kevin Benson, David Nalewajek, Alagappan Thenappan
  • Patent number: 6060629
    Abstract: Provided are azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluoropropane (HFC-245fa) and hydrogen fluoride. Such are useful as an intermediate in the production of HFC-245fa. The latter is useful as a nontoxic, zero ozone depleting fluorocarbon useful as a solvent, blowing agent, refrigerant, cleaning agent, aerosol propellant, heat transfer medium, dielectric, fire extinguishing composition and power cycle working fluid.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: May 9, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Hang Thanh Pham, Rajiv Ratna Singh, Ian Robert Shankland, Hsueh Sung Tung
  • Patent number: 6034202
    Abstract: The invention provides non-antimony containing polymerization catalysts for the condensation of polyesters. The catalyst is in the form of a clear chlorine and/or bromine containing solution of a metal glycoxide and a metal glycolate having a pH in the range of from 0 to about 1, and containing chlorine and/or bromine atoms at a number ratio of chlorine and/or bromine to total metal cations in the catalyst ranging from about 0.5:1 to about 3:1. Polyesters produced with this catalyst have improved melt elasticity, and higher melt viscosity. The former property is desirable for the preparation of large and complex shaped polyester containers, and the latter property is desirable for melt spinning of industrial grade fibers and tire cords.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: March 7, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Shaul Moshe Aharoni, Konstantin Nikolaev Goranov
  • Patent number: 6031112
    Abstract: Process for the production of alkoxycarbonyldipeptides intermediates in the synthesis of the lisinopril which comprises protecting both amino functions of the L-lysine with an alkoxycarbonyl group, subsequently making the N-carboxyanhydride of the N6-[alkoxycarbonyl]-L-lysine by treatment with thionyl chloride and making the desired alkoxycarbonyldipeptide by reaction with L-proline in alkaline medium.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: February 29, 2000
    Assignee: P.F.C. Italiana S.r.l.
    Inventors: Vincenzo Cannata, Valeriano Merli, Stefano Saguatti
  • Patent number: 6023004
    Abstract: A process for the catalytic fluorination of hydrochlorocarbons and hydrochlorofluorocarbons in the liquid phase. The process is useful for fluorinating hydrochloropropanes, hydrochlorofluoropropanes, hydrochloropropenes and hydrochlorofluoropropenes and most particularly useful for fluorinating 1,1,1,3,3-pentachloropropane to 1,1,1,3,3-pentafloropropane.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: February 8, 2000
    Assignee: AlliedSignal, Inc.
    Inventors: Alagappan Thenappan, Hsueh S. Tung, Robert L. Bell
  • Patent number: 6013838
    Abstract: Novel trifluoromethylated intermediates are provided which are useful in synthesizing trifluoromethylated organic compounds. Specifically, compounds of the formula CF.sub.3 CR are provided, wherein R is (Cl).dbd.CHCH.sub.2 SO.sub.2 Ph, (Cl).dbd.CHCH.sub.2 CH.sub.2 C(.dbd.O)CH.sub.3, (Cl).dbd.CHCH.sub.2 CH(COCH.sub.3).sub.2, (Cl).dbd.CHCH.sub.2 NR'R" or H.dbd.CHCH.dbd.NR'; R' and R" are the same or different and are selected from the group consisting of hydrogen, unsubstituted or substituted C.sub.1 to C.sub.6 straight chain or branched alkyl, unsubstituted or substituted C.sub.3 to C.sub.7 cycloalkyl, unsubstituted or substituted C.sub.2 to C.sub.12 alkenyl, a benzyl group unsubstituted or substituted with R'", or a phenyl group unsubstituted or substituted with R'"; or R' and R" taken together form a five- or six-membered ring; and R'" is an unsubstituted or substituted C.sub.1 to C.sub.6 straight chain or branched alkyl, an unsubstituted or substituted C.sub.1 to C.sub.
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: January 11, 2000
    Assignee: Alliedsignal Inc.
    Inventor: Michael Van Der Puy
  • Patent number: 6001796
    Abstract: Provided are azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentafluoropropane (HFC-245fa) and hydrogen fluoride. Such are useful as an intermediate in the production of HFC-245fa. The latter is useful as a nontoxic, zero ozone depleting fluorocarbon useful as a solvent, blowing agent, refrigerant, cleaning agent, aerosol propellant, heat transfer medium, dielectric, fire extinguishing composition and power cycle working fluid.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: December 14, 1999
    Assignee: AlliedSignal Inc.
    Inventors: Hang Thanh Pham, Rajiv Ratna Singh, Ian Robert Shankland, Hsueh Sung Tung
  • Patent number: 5986151
    Abstract: A process for the preparation of fluorinated propanes and propenes. CF.sub.3 CH.dbd.CH.sub.2 is produced from CF.sub.3 CH.sub.2 CHF.sub.2 by the sequential steps of dehydrofluorination, a reduction, and a second dehydrofluorination in which the same catalyst is preferably used for each step. Preferably the catalysts is palladium on carbon. The process provides the steps of passing CF.sub.3 CH.sub.2 CHF.sub.2 over a Pd/C catalyst to form CF.sub.3 CH.dbd.CHF; hydrogenating CF.sub.3 CH.dbd.CHF over a Pd/C catalyst to give CF.sub.3 CH.sub.2 CH.sub.2 F; and passing CF.sub.3 CH.sub.2 CH.sub.2 F over a Pd/C catalyst to give CF.sub.3 CH.dbd.CH.sub.2.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: November 16, 1999
    Assignee: AlliedSignal Inc.
    Inventor: Michael Van Der Puy
  • Patent number: 5976554
    Abstract: The invention relates to compositions of ethylene oxide and heptafluoropropane and a method of sterilization using same. These environmentally acceptable compositions are chemically stable, minimally segregating, compatible with the objects being sterilized; provide sufficient vapor pressure to deliver the blend to the sterilization chamber, and possess improved flammability suppressant characteristics.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: November 2, 1999
    Assignee: AlliedSignal Inc.
    Inventors: Robert G. Richard, Barbara R. Fellows-Decaire, Ian Robert Shankland, James Albert Batt
  • Patent number: 5969198
    Abstract: A process for preparing 1,1,1,3,3-pentafluoropropane from a hydrochlorocarbon of the formula C.sub.3 H.sub.y Cl.sub.x, wherein x is an integer from 3 to 5, y is an integer from 1 to 3, x+y=4, 6, or 8, and x-y=2 is provided.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: October 19, 1999
    Assignee: AlliedSignal Inc.
    Inventors: Alagappan Thenappan, Michael Van Der Puy, Hsueh S. Tung