Oxygen Containing Component Patents (Class 510/411)
  • Patent number: 6255273
    Abstract: Azeotropic or near azeotropic compositions based on difluoromethoxy-bis(difluoromethyl ether) and/or 1-difluoromethoxy-1,1,2,2-tetrafluoroethyl difluoromethyl ether.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: July 3, 2001
    Assignee: Ausimont S.p.A.
    Inventors: Ezio Musso, Giampiero Basile, Sauro Girolomoni
  • Patent number: 6235700
    Abstract: The invention provides azeotrope-like compositions consisting essentially of RfOC2H5, where Rf is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and an organic solvent selected from the group consisting of: straight chain, branched chain and cyclic alkanes having 6 to 8 carbon atoms; esters having 4 carbon atoms; ketones having 4 carbon atoms; disiloxanes having 6 carbon atoms; cyclic and acyclic ethers having 4 to 6 carbon atoms; chlorinated alkanes having 3 to 4 carbon atoms and chlorinated alkenes having 2 carbon atoms. The compositions are useful for cleaning, as solvents or carriers for coating and as heat transfer materials.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: May 22, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
  • Patent number: 6221273
    Abstract: Azeotropic or near azeotropic compositions based on hexafluoropropane (R 236) as substitutes of CClF2-CClF2 (R 114) which essentially consist of R 236 and bis(difluoromethyl)-ether or n-butane, or mixtures thereof, for heat pumps, air-conditioners, etc.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: April 24, 2001
    Assignee: Ausimont S.p.A.
    Inventors: Giampiero Basile, Ezio Musso
  • Patent number: 6187729
    Abstract: A liquid cleaning composition comprising a solvating agent and a rinsing agent, the ratio of the vapor pressure of said rinsing agent to the vapor pressure of said solvating agent being at least about 20 and the use thereof to clean substrates that have soil adhered thereto.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: February 13, 2001
    Assignee: Petroferm Inc.
    Inventors: Michael E. Hayes, Donald P. Hosman, Kevin R. Hrebenar, Robert D. Sell
  • Patent number: 6153575
    Abstract: Describes a stabilized trans-1,2-dichloroethylene composition having a low concentration of aliphatic aldehyde hydrazone, optionally in combination with an epoxide. The aliphatic aldehyde hydrazone was found to be more efficient than commercially used hydroquinone monomethylether (HQMME) in preventing the isomeric transformation of trans-1,2-dichloroethylene to cis-1,2-dichloroethylene during storage. Also described is a process for cleaning the surface of an article with the stabilized 1,2-dichloroethylene composition.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: November 28, 2000
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Earl M. Gorton, Ronald D. Olinger
  • Patent number: 6107267
    Abstract: A process is disclosed for recovering HF from a product mixture including HF and CF.sub.3 CF.sub.2 CHF.sub.2. The process involves (1) distilling the product mixture to remove all products which have a lower boiling point than the lowest boiling azeotrope containing HF and CF.sub.3 CF.sub.2 CHF.sub.2 ; and (2) distilling the azeotrope to recover HF as an azeotropic composition containing HF and CF.sub.3 CF.sub.2 CHF.sub.2. Also disclosed are compositions of hydrogen fluoride in combination with an effective amount of CF.sub.3 CF.sub.2 CHF.sub.2 to form an azeotrope or azeotrope-like composition with hydrogen fluoride, (e.g., compositions containing from about 57.1 to 67.2 mole percent CF.sub.3 CF.sub.2 CHF.sub.2).A process for producing certain compositions comprising(a) CF.sub.3 CF.sub.2 CHF.sub.2 and (b) at least one saturated halogenated hydrocarbon and/or ether having the formula:C.sub.n H.sub.2n+2-a-b Cl.sub.a F.sub.b O.sub.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: August 22, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: V. N. Mallikarjuna Rao, Allen Capron Sievert, Munirpallam A. Subramanian
  • 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: 6090771
    Abstract: Aqueous based cleaning compositions simultaneously featuring disinfecting, low residue deposit and good cleaning characteristics are provided. The compositions include one or more quaternary amine compounds as disinfecting active agents, an organic solvent system which includes glycol mono-n-butyl ether or a binary system including a glycol ether with a linear primary alcohol, and either one or more betaines, or one or more amine oxides as a surfactant constituent.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: July 18, 2000
    Assignee: Reckitt Benckiser Inc.
    Inventors: Diane Joyce Burt, Kenneth A. Harrison, Ann Marie Lynch, Jeanne Marie Weller
  • Patent number: 6063748
    Abstract: The invention provides azeotrope-like compositions consisting essentially of R.sub.f OC.sub.2 H.sub.5, where R.sub.f is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and an organic solvent selected from the group consisting of: straight chain, branched chain and cyclic alkanes having 6 to 8 carbon atoms; esters having 4 carbon atoms; ketones having 4 carbon atoms; disiloxanes having 6 carbon atoms; cyclic and acyclic ethers having 4 to 6 carbon atoms; chlorinated alkanes having 3 to 4 carbon atoms and chlorinated alkenes having 2 carbon atoms. The compositions are useful for cleaning, as solvents or carriers for coating and as heat transfer materials.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: May 16, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
  • Patent number: 6048833
    Abstract: This invention provides a solvent composition comprising 1-bromopropane and a decafluoropentane for use as a cleaning and degreasing solvent. Preferably the decafluoropentane consists essentially of 1,1,1,2,3,4,4,5,5,5-decafluoropentane. The solvent composition optionally includes stabilizers and co-solvents such alcohols, ketones, ethers, acetals, nitroalkanes, epoxides and amines. Specific compositions of 1-bromopropane, 1,1,1,2,3,4,4,5,5,5-decafluoropentane and optional stabilizers provide azeotrope compositions that are particularly well suited as cleaning and degreasing solvents.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: April 11, 2000
    Assignee: Great Lakes Chemical Corporation
    Inventor: Richard J. DeGroot
  • Patent number: 6048832
    Abstract: The invention relates to novel azeotrope-like compositions of 1-bromopropane, 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane (HFE-7100) and at least one organic solvent selected from the group consisting of methanol, ethanol, 2-propanol, 2-methyl-2-propanol, tetrahydrofuran, nitromethane, and methylene chloride 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: April 11, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Alagappan Thenappan, Leonard Michael Stachura, Martin Richard Paonessa, Kane David Cook, Ian R. Shankland
  • Patent number: 6036727
    Abstract: This invention relates to dry-cleaning systems which include anhydrous dry-cleaning compositions which contain polysulfonic acid, and a bag for the cleaning and containment of soiled fabric articles. In a first embodiment, the dry-cleaning compositions includes organic solvents, polysulfonic acid, and not more than about 10 wt % water. In a second embodiment, the dry-cleaning compositions includes organic solvents and polysulfonic acid, and not more than 1 about wt % water. The invention also relates to methods of using the dry-cleaning system and dry-cleaning composition.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: March 14, 2000
    Assignee: Creative Products Resource, Inc.
    Inventor: James A. Smith
  • Patent number: 6030934
    Abstract: The present invention provides binary azeotropic composition consisting essentially of C.sub.3 F.sub.7 --OCH.sub.3 and a second component selected from the group consisting of an unsubstituted alkane having 5 to 7 carbon atoms, methyl formate, acetone, methanol, 1,1,1,3,3,3-hexafluoro-2-propanol, methylene chloride and trans-1,2-dichloroethylene. The present invention also discloses tertiary azeotropic composition consisting essentially of C.sub.3 F.sub.7 --OCH.sub.3, a second component selected from the group consisting of methanol and 1,1,1,3,3,3-hexafluoro-2-propanol and a third component selected from the group consisting of methylene chloride and trans-1,2-dichloroethylene. The azeotropic composition of this invention may be used in various applications and in particular as refrigerant, in cleaning applications, in heat transfer applications, in coating applications, and the like.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: February 29, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: John G. Owens, Philip E. Tuma, Hideto Yanome
  • Patent number: 6022842
    Abstract: The invention provides azeotrope-like compositions consisting essentially of R.sub.f OCH.sub.3, where R.sub.
    Type: Grant
    Filed: February 11, 1998
    Date of Patent: February 8, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: John G. Owens, Hideto Yanome
  • Patent number: 6020299
    Abstract: Disclosed is a single phase mixture of about 1 to about 99 wt % of a compound having the general formula ##STR1## where "n" is 1 or 2 and about 0.1 to about 99 wt % of a liquid which can be a perfluoro aliphatic alkane from C.sub.5 to C.sub.8, a perfluoro cycloaliphatic alkane from C.sub.5 to C.sub.8, a perfluoro alkylcycloalkane having 5 to 8 carbon atoms in the ring and 1 or 2 branches of 1 to 3 carbon atoms each, a perfluoro-N-alkylmorpholine from C.sub.5 to C.sub.8, a perfluoro cycloether from C.sub.4 to C.sub.7, or a perfluoro polyether having an average molecular weight from about 400 to about 500.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: February 1, 2000
    Assignee: Occidental Chemical Corporation
    Inventors: Hang-Chang Bobby Chen, Mark E. Lindrose
  • Patent number: 6013611
    Abstract: A light duty liquid detergent with desirable cleansing properties and mildness to the human skin comprising: a water soluble nonionic surfactant, an alkali metal or ammonium salt of a C.sub.8-18 ethoxylated alkyl ether sulfate anionic surfactant, a magnesium salt of a sulfonate surfactant, a betaine surfactant and water.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: January 11, 2000
    Assignee: Colgate Palmolive Company
    Inventors: Barbara Thomas, Gilbert Gomes, Julien Drapier, John Church
  • Patent number: 6010997
    Abstract: The invention relates to novel compositions of 1-bromopropane, nitromethane or acetonitrile and at least one alcohol selected from the group consisting of ethanol, 2-propanol and 2-methyl-2-propanol 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: January 4, 2000
    Assignee: Alliedsignal Inc.
    Inventors: Alagappan Thenappan, Leonard Michael Stachura, Martin Richard Paonessa, Kane David Cook
  • Patent number: 6010995
    Abstract: A low volatile organic component stable, aqueous cleaning/degreasing composition in the form of a macroemulsion is formulated by combining (a) a nonionic surfactant having certain specified characteristics; (b) an oligomeric or mono/polyfunctional hydrophobe having certain specified characteristics; and (c) water, the nonionic surfactant and hydrophobe being present in a weight ratio of between approximately 10:1 and 1:3 and the composition having a minimum composite score of 60% removal in the soilant marking removal test. Such compositions not only contain no or low amounts of volatile organic compounds but are environmentally safe and non-toxic and exhibit excellent cleaner/degreaser activity exceeding that exhibited by either the nonionic surfactant or hydrophobe component alone at equivalent or equal concentration.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: January 4, 2000
    Assignee: Buckeye International, Inc.
    Inventor: Donald N. Van Eenam
  • Patent number: 6008179
    Abstract: The invention provides azeotrope-like compositions consisting essentially of R.sub.f OCH.sub.3, where R.sub.f is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and one or more organic solvent(s) selected from the group consisting of: straight chain, branched chain and cyclic alkanes containing 6 to 8 carbon atoms; cyclic and acyclic ethers containing 4 to 6 carbon atoms; ketones having 3 carbon atoms; chlorinated alkanes containing 1, 3 or 4 carbon atoms; chlorinated alkenes containing 2 carbon atoms, alcohols containing 1 to 4 carbon atoms, partially fluorinated alcohols containing 2 to 3 carbon atoms, 1-bromopropane, acetonitrile, HCFC 225ca (1,1,-dichloro-2,2,3,3,3-pentafluoropropane and HCFC- 225cb (1,3-dichloro-1,1,2,2,3-pentafluoropropane).
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: December 28, 1999
    Assignee: 3M Innovative Properties Company
    Inventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
  • Patent number: 5989456
    Abstract: A solvent composition comprising dichloropentafluoropropane and (perfluorobutyl) methyl ether, wherein the ratios of the dichloropentafluoropropane and the (perfluorobutyl) methyl ether in the solvent composition are from 10 to 50 wt % and from 50 to 90 wt %, respectively.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: November 23, 1999
    Assignee: Asahi Glass Company Ltd.
    Inventor: Masaaki Tsuzaki
  • Patent number: 5985810
    Abstract: A cleaning composition comprising at least one low molecular weight polyorganosiloxane selected from the group consisting of straight chain polydiorganosiloxane represented by a general formula: ##STR1## (wherein R.sup.1 is an organic group of single valence substituted by the same or different group or unsubstituted, and l is an integer from 0 to 5), and cyclic polydiorganosiloxane represented by a general formula: ##STR2## (wherein R.sup.1 is an organic group of single valence substituted by the same or different group or unsubstituted, and m is an integer from 3 to 7). To use it as a water system cleaning agent, polyoxyalkylene group containing polyorganosiloxane, a surfactant, and water are additionally mixed. Accordingly, a cleaning effect free from environmental destruction and contamination, equivalent to flon containing cleaning agents, and satisfactorily stable in terms of dispersion as a water system cleaning agent can be obtained.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 16, 1999
    Assignee: Toshiba Silicone Co., Ltd.
    Inventors: Minoru Inada, Kimiaki Kabuki, Yasutaka Imajo, Takayuki Oguni, Noriaki Yagi, Nobuhiro Saitoh, Akitsugu Kurita, Yoshiaki Takezawa
  • Patent number: 5977054
    Abstract: Disclosed are mildly acidic liquid compositions for use in cleaning hard surfaces. The compositions contain from about 1% to about 60% of an amine oxide detergent surfactant, an aqueous carrier liquid, and an acidifying agent having a pK.sub.a of less than about 6.0. The compositions contain enough of the acidifying agent to protonate at least about 10% of the amine oxide species within the compositions and to provide a composition pH of between about 3 and 7. These no-rinse liquid hard surface cleaning compositions have excellent cleaning properties, they do not leave a visible residue when they dry, and they cause minimal or no staining of vinyl surfaces. Also disclosed are a method for cleaning vinyl surfaces using the liquid compositions, and non-liquid compositions from which the mildly acidic liquid compositions can easily be obtained by adding an aqueous liquid.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: November 2, 1999
    Assignee: The Procter & Gamble Company
    Inventor: Thomas James Wierenga
  • Patent number: 5965511
    Abstract: In order to replace compositions based on CFC or on HCFC in applications for cleaning or drying solid surfaces (in particular defluxing), the invention proposes azeotropic or virtually azeotropic compositions based on 1,1,1,2,3,4,4,5,5,5-decafluoropentane, methylene chloride and optionally methanol.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: October 12, 1999
    Assignee: Elf Atochem S. A.
    Inventors: Pascal Michaud, Jean-Jacques Martin
  • Patent number: 5929016
    Abstract: Aqueous based cleaning compositions simultaneously featuring disinfecting, low residue deposit and good cleaning characteristics are provided. The compositions include one or more quaternary amine compounds as disinfecting active agents, an organic solvent system which includes glycol mono-n-butyl ether or a binary system including a glycol ether with a linear primary alcohol, and either one or more betaines, or one or more amine oxides as a surfactant constituent.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: July 27, 1999
    Assignee: Reckitt & Colman Inc.
    Inventor: Kenneth A. Harrison
  • Patent number: 5922662
    Abstract: A high foaming, light duty, liquid detergent with desirable cleansing properties and mildness to the human skin comprising: a water soluble nonionic surfactant at least one water soluble, foaming, anionic surfactant, a zwitterionic surfactant, an alkyl succinamate and the balance being water.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: July 13, 1999
    Assignee: Colgate Palmolive Company
    Inventor: Barbara Thomas
  • Patent number: 5895504
    Abstract: Disclosed herein are methods for use of a towelette to clean stains from clothing and upholstery. The towelette is impregnated with a cleaning solution that is primarily water, but also contains a volatile cleaning agent and a surfactant. The pH and surfactant concentrations of the cleaning solution are regulated. The wipe reduces the incidence of readily visible rings around treated stains.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: April 20, 1999
    Assignee: S. C. Johnson & Son, Inc.
    Inventors: John A. Sramek, Thomas A. Strash
  • Patent number: 5888250
    Abstract: A method for dry-cleaning garments which comprises treating them with an azeotropic solvent of propylene glycol tertiary-butyl ether and water.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: March 30, 1999
    Assignee: Rynex Holdings Ltd.
    Inventors: William A. Hayday, Stephen P. Bates
  • Patent number: 5888418
    Abstract: An azeotropic refrigerant particularly useful as a working fluid in chilled water refrigerating systems to be used in possible juxtaposition to sea water comprises at least about 2 mol percent 1,1,2-trifluoroethane (R143) and the balance bis-(difluoromethyl) ether (E134).
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: March 30, 1999
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventor: Graham Morrison
  • Patent number: 5869439
    Abstract: A high foaming, light duty, liquid detergent with desirable cleansing properties and mildness to the human skin comprising: a water soluble nonionic surfactant at least one water soluble, foaming, anionic surfactant, a zwitterionic surfactant, an alkyl succinamate and the balance being water.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: February 9, 1999
    Assignee: Colgate Palmolive Company
    Inventors: Barbara Thomas, Gilbert Gomes
  • Patent number: 5854201
    Abstract: The invention relates to textile softener concentrates based on pentaerythritol and/or dipentaerythritol fatty acid partial esters. The dispersibility of such softener concentrates in cold water can be significantly improved by addition of a special emulsifier combination of quaternary ammonium compounds and nonionic compounds. The quaternary ammonium compounds are quaternized alkoxylated alkylamines and/or esterquats. Ethoxylated and/or propoxylated fatty acids or fatty acid esters and end-capped fatty alcohol polyglycol ethers are suitable nonionic emulsifiers.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: December 29, 1998
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Ansgar Behler, Guenther Uphues, Bernd Wahle, Peter Waltenberger, Almud Folge
  • Patent number: 5851436
    Abstract: Compositions of nonafluoromethoxybutane and cyclopentane, nonafluoromethoxybutane and cyclohexane; nonafluoromethoxybutane, cyclopentane and acetone, nonafluoromethoxybutane, cyclohexane and acetone, nonafluoromethoxybutane, trans-1,2-dichloroethylene and cyclopentane; and nonafluoromethoxybutane, trans-1,2-dichloroethylene, cyclopentane and methanol are described. These compositions are useful as cleaning agents, displacement drying agents, refrigerants, heat transfer media, expansion agents for polyolefins and polyurethanes, aerosol propellants, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, and buffing abrasive agents.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: December 22, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Abid Nazarali Merchant, Barbara Haviland Minor, Shoeb Akberali Moiyadi
  • Patent number: 5851435
    Abstract: Disclosed is a cleaning composition of about 80 to about 99 wt % benzotrifluoride, about 1 to about 20 wt % monohydric alkanol from C.sub.1 to C.sub.4, and up to about 20 wt % of a fluorocarbon having the general formula C.sub.m H.sub.n F.sub.2m+2n, where m is 4 to 8 and n is 1 to m/2 if m is even and (m+1)/2 if m is odd. The composition is useful in cleaning greases, oils, solder fluxes, and other soils.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: December 22, 1998
    Assignee: Occidental Chemical Corporation
    Inventors: Hang-Chang Bobby Chen, Edward A. Rowe
  • Patent number: 5839311
    Abstract: In one aspect, this invention provides a lubricating and colling composition for the forming of metals comprising a hydrofluoroether. In another aspect, the present invention provides a method of forming metals comprising applying to the metal and the workpiece a composition comprising a hydrofluoroether.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: November 24, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark W. Grenfell, Dean S. Milbrath, Daniel D. Krueger, Richard M. Flynn, Frederick E. Behr
  • Patent number: 5834417
    Abstract: A light duty liquid detergent with desirable cleansing properties and mildness to the human skin comprising: a sulfonate surfactant, an alkali metal or ammonium salt of a C.sub.8-18 ethoxylated alkyl ether sulfate anionic surfactant, an amine oxide surfactant, an ethoxylated monoalkanol amide, a monoalkanol amide, an alkyl polyglucoside surfactant, and water.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: November 10, 1998
    Assignee: Colgate Palmolive Co.
    Inventors: Len Zyzyck, Elizabeth McCandlish
  • Patent number: 5834416
    Abstract: Binary azeotrope and azeotrope-like compositions contain the alkyl esters n-propyl acetate (NPA) and sec-butyl acetate (SBA) respectively, with hexamethyldisiloxane (MM), and are useful for cleaning, rinsing, or drying.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: November 10, 1998
    Assignee: Dow Corning Corporation
    Inventors: David Lee Morgan, Dwight Edward Williams
  • Patent number: 5827446
    Abstract: Compositions of nonafluoromethoxybutane and at least one component selected from the group consisting of methanol, ethanol, isopropanol, n-heptane, trans-1,2-dichloroethylene, cis-1,2-dichloroethylene and acetone, and 1,1,1,2,3,4,4,5,5,5-decafluoropentane are described. These compositions are useful as cleaning agents, displacement drying agents, refrigerants, heat transfer media, expansion agents for polyolefins and polyurethanes, aerosol propellants, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, and buffing abrasive agents.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: October 27, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Abid Nazarali Merchant, Barbara Haviland Minor
  • Patent number: 5827812
    Abstract: The invention provides azeotrope-like compositions consisting essentially of R.sub.f OCH.sub.3, where R.sub.f is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and one or more organic solvent(s) selected from the group consisting of: straight chain, branched chain and cyclic alkanes containing 6 to 8 carbon atoms; cyclic and acyclic ethers containing 4 to 6 carbon atoms; ketones having 3 carbon atoms; chlorinated alkanes containing 1, 3 or 4 carbon atoms; chlorinated alkenes containing 2 carbon atoms, alcohols containing 1 to 4 carbon atoms, partially fluorinated alcohols containing 2 to 3 carbon atoms, 1-bromopropane, acetonitrile, HCFC 225ca (1,1,-dichloro-2,2,3,3,3 pentafluoropropane and HCFC- 225cb (1,3-dichloro-1,1,2,2,3-pentafluoropropane).
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: October 27, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
  • Patent number: 5824634
    Abstract: Cleaning compositions comprising an acyclic aliphatic hydrofluorocarbon represented by the formula:C.sub.x H.sub.y F.sub.2x+2-ywhere x equals 4, 5 or 6, y equals 1, 2 or 3 with the proviso that when x equals 4, Y equals 2 or 3, and a co-solvent boiling between 200.degree. C.-105.degree. C. that are alcohols, esters, ethers, ketones, chlorinated hydrocarbons, optionally containing fluorine, having 1-4 carbons atoms, acetonitrile and nitromethane.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: October 20, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Abid Nazarali Merchant
  • Patent number: 5824632
    Abstract: Binary azeotrope and azeotrope-like compositions contain 1-butoxy-2-propanol, 1-(2-methoxy-1-methylethoxy)-2-propanol, 1-(2-ethoxy-1-methylethoxy)-2-propanol, 1-(2-propoxy-1-methylethoxy)-2-propanol, and 1-(2-methoxy-1-methylethoxy)-2-propanol-acetate, with decamethyltetrasiloxane (MDDM), and are useful for cleaning, rinsing, or drying.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: October 20, 1998
    Assignee: Dow Corning Corporation
    Inventors: Ora Ley Flaningam, David Lee Morgan, Dwight Edward Williams
  • Patent number: 5817615
    Abstract: The invention provides an aqueous, hard surface cleaner with significantly improved residue removal and substantially reduced filming/streaking, said cleaner comprising:(a) an effective amount of at least one organic solvent with a vapor pressure of at least 0.001 mm Hg at 25.degree. C., and mixtures of such solvents;(b) an effective amount of at least one semi-polar nonionic surfactant, said surfactant having the structure: ##STR1## wherein R.sup.1 is C.sub.5-20 alkyl, R.sup.2 and R.sup.3 are both C.sub.1-4 alkyl, or --(CH.sub.2).sub.p --OH, although R.sup.2 and R.sup.3 do not have to be equal, and p is 1-6;(c) an effective amount of a buffering system which comprises a nitrogenous buffer which will result in a pH of greater than 6.5; and(d) the remainder as substantially all water.
    Type: Grant
    Filed: June 3, 1996
    Date of Patent: October 6, 1998
    Assignee: The Clorox Company
    Inventors: Aram Garabedian, Jr., Scott C. Mills, William P. Sibert, Clement K. Choy
  • Patent number: 5814595
    Abstract: The invention provides azeotrope-like compositions consisting essentially of R.sub.f OC.sub.2 H.sub.5, where R.sub.f is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and an organic solvent selected from the group consisting of: straight chain, branched chain and cyclic alkanes having 6 to 8 carbon atoms; esters having 4 carbon atoms; ketones having 4 carbon atoms; disiloxanes having 6 carbon atoms; cyclic and acyclic ethers having 4 to 6 carbon atoms; chlorinated alkanes having 3 to 4 carbon atoms and chlorinated alkenes having 2 carbon atoms. The compositions are useful for cleaning, as solvents or carriers for coating and as heat transfer materials.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: September 29, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
  • Patent number: 5792277
    Abstract: Stabilized, n-propyl bromide containing cleaning solvent compositions and a cleaning process are provided. The cleaning solvent compositions include an alcohol selected from 1-propanol and 2-butanol, including mixtures thereof, as a co-solvent so as to form azeotropic or azeotropic-like mixtures which have no fire or flash points.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: August 11, 1998
    Assignee: Albemarle Corporation
    Inventors: Ronald L. Shubkin, Eric W. Liimatta
  • Patent number: 5788886
    Abstract: The present invention relates to compositions of pentafluoropropane and a fluorinated propane having from 1 to 5 fluorine atoms; a hydrocarbon having from 1 to 5 carbon atoms; 1,1,1,4,4,4-hexafluorobutane, (CF.sub.3).sub.2 CHCH.sub.3, dimethyl ether; or 1,1,1,2,3,4,4,5,5,5-decafluoropentane. The compositions, which may be azeotropic or azeotrope-like, may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, refrigerants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents or displacement drying agents.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: August 4, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Tuneen E. C. Chisolm
  • Patent number: 5779931
    Abstract: This invention relates to compositions that include at least one fluoroether and at least one hydrofluorocarbon. Included in this invention are compositions of a cyclic or acyclic hydrofluoroether of the formula C.sub.a F.sub.b H.sub.2a+2-b O.sub.c wherein a=2 or 3 and 3.ltoreq.b.ltoreq.8 and c=1 or 2 and a hydrofluorocarbon of the formula C.sub.n F.sub.m H.sub.2n+2-m wherein 1.ltoreq.n.ltoreq.4 and 1.ltoreq.m.ltoreq.8. Such compositions may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: July 14, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Diana Lynn Klug, Barbara Haviland Minor, Donna Marie Patron, Tuneen E. C. Chisolm, Allen Capron Sievert
  • Patent number: 5772911
    Abstract: Compositions include compositions of 1,1,2,2,3,3,4,4-octafluorobutane and a hydrocarbon having from 3 to 7 carbon atoms. Specific examples include 1,1,2,2,3,3,4,4-octafluorobutane and butane, cyclopropane, isobutane, propane, cyclopentane, 2,2-dimethylbutane, n-pentane, 2-methylbutane, cyclohexane, 2,3-dimethylpentane, 3-ethylpentane, heptane, hexane or methylcyclopentane. Also included in this invention are compositions of 1,1,2,2,3,3,4,4-octafluorobutane and ethyl formate, propylene oxide, bis(pentafluoroethyl)sulfide, dimethoxyethane or tetrahydrofuran. These compositions, which may be azeotropic or azeotrope-like, may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, refrigerants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents or displacement drying agents.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: June 30, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Allen Capron Sievert
  • Patent number: 5773403
    Abstract: A cleaning and drying solvent is disclosed which has excellent cleaning power and drying property and finds uses as a hand-cleaning agent, a precise cleaning agent and a drying agent for industrial parts. Since it does not contain halogens causing the depletion of the ozone layer, it is available as a solvent replacing freon. The cleaning and drying solvent is composed of a siloxane compound, in particular, hexamethyldisiloxane, an azeotropic or azeotrope-like composition of hexamethyldisiloxane and a lower alcohol, or a mixture of hexamethyldisiloxane and each of ketones, carboxylic esters, low molecular saturated hydrocarbons and low molecular alcohols.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: June 30, 1998
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Masamichi Hijino, Michio Shirai, Kunihiko Uzawa
  • Patent number: 5762817
    Abstract: Azeotropic or azeotrope-like compositions of effective amounts of 1,1,1,2,3,4,4,5,5,5-decafluoropentane, 1,1-dichloroethane and an alcohol such as methanol, ethanol, or isopropanol, to form an azeotropic or azeotrope-like composition are disclosed that are useful as cleaning agents, refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes and as power cycle working fluids.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: June 9, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Abid Nazarali Merchant, Barbara Haviland Minor
  • Patent number: 5756002
    Abstract: A cleaning solvent comprising(A) about 3 to about 20 wt % of a fluorinated compound selected from the group consisting of(1) fluorocarbons having the general formulaC.sub.m H.sub.n F.sub.2m+2-nwhere m is 4 to 8, and n is 0 to m/2 if m is even and 0 to (m+1)/2 if m is odd;(2) C.sub.5 F.sub.11 NO;(3) alkyl perfluoroethers having the general formulaR.sub.1 OR.sub.2where R.sub.1 is C.sub.3 F.sub.7 or C.sub.4 F.sub.9 and R.sub.2 is CH.sub.3 or C.sub.2 H.sub.5 ; and(4) fluorochlorocarbons having the general formulaC.sub.p H.sub.q Cl.sub.r F.sub.2p+2-q-rwhere p is 3, 4, or 5, q is 1 to p-1, and r is 1 to p-1;(B) up to about 15 wt % of a C.sub.1 to C.sub.4 alkanol; and(C) the remainder benzotrifluoride.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: May 26, 1998
    Assignee: Occidental Chemical Corporation
    Inventors: Hang-Chang Bobby Chen, Edward A. Rowe
  • Patent number: 5747435
    Abstract: Composition useful as 2-in-1 cleansing products are disclosed that are extremely mild to skin and hair, which use neutralized, essentially chargeless, ionic complexes of fatty amines and fatty acids to deliver various levels of conditioning; neutralized, essentially chargeless, ionic complexes of a detersive surfactant comprising a water soluble cationic surfactant and/or polymer complexed with one or more anionic surfactants; or an amphoteric surfactant complexed with one or more anionic surfactants; or a water soluble cationic surfactant and/or polymer complexed with one or more amphoteric surfactants; or a water soluble cationic surfactant and/or polymer complexed with one or more anionic surfactants and an amphoteric surfactant; detersive surfactant-soluble but water-insoluble silicones or derivatives thereof; and water. These products exhibit true 2-in- conditioning properties, and are lower in cost than current 2 in 1 products. Clear or opacified products can be formulated.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: May 5, 1998
    Assignee: Colgate-Palmolive Company
    Inventor: Amrit M. Patel
  • Patent number: 5747437
    Abstract: To replace compositions based on CFC or CFHC in applications for cleaning solid surfaces (in particular defluxing), the invention proposes azeotropic or quasi-azeotropic compositions based on 1,1,1,2,2,4,4-heptafluorobutane and a C.sub.1 -C.sub.3 alcohol.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: May 5, 1998
    Assignee: Elf Atochem S.A.
    Inventor: Pascal Michaud