Halogenated Hydrocarbon Component (e.g., Degreasing Composition, Etc.) Patents (Class 510/273)
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Patent number: 8969279Abstract: This invention relates to solvent systems useful for foam nozzle cleaning, which solvent systems are formed by combining at least a brominated compound, an alcohol and a stabilizer in amounts such that the solvent system has no flash point.Type: GrantFiled: October 6, 2010Date of Patent: March 3, 2015Assignee: Albemarle CorporationInventor: Hisashi Miwa
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Publication number: 20140303057Abstract: A method is provided involving altering the viscosity of bio-derived paraffins to produce a paraffinic fluid, where the altering step includes oligomerizing bio-derived paraffins, unsaturating bio-derived paraffins, chlorinating bio-derived paraffins, or a combination of any two or more thereof; the bio-derived paraffins are produced by hydrodeoxygenating a bio-based feed; the bio-based feed comprises bio-derived fatty acids, fatty acid esters, or a combination thereof; the bio-derived paraffins comprise n-paraffins; and the n-paraffins have a biodegradability of at least 40% after about 23 days of exposure to microorganisms. Also provided are methods of protecting a substance by applying a paraffinic fluid and a method of producing an orifice in a substrate by at least injecting a paraffinic fluid into the substrate.Type: ApplicationFiled: April 26, 2013Publication date: October 9, 2014Applicant: Syntroleum CorporationInventors: Ramin Abhari, E. Gary Roth, Peter Z. Havlik, H. Lynn Tomlinson
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Publication number: 20140194335Abstract: Compositions and methods for treating biofilm formation and growth on a substrate are provided. The composition comprises 1 ppb to 1,000 ppm of at least one D-amino acid and 1 ppm to 60,000 ppm of at least one biocide. The method comprises contacting the substrate with 1 ppb to 1,000 ppm of at least one D-amino acid and 1 ppm to 60,000 ppm of at least one biocide. The compositions and methods are effective for preventing, reducing or eliminating biofilm formation or biofilm growth or both, as well as eradicating established, recalcitrant biofilms, particularly biofilms comprising sulfate reducing bacteria that are known to cause microbiologically influenced corrosion, biofouling, or both.Type: ApplicationFiled: August 26, 2012Publication date: July 10, 2014Applicant: OHIO UNIVERSITYInventors: Tingyue Gu, Dake Xu
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Publication number: 20130276830Abstract: n-Propyl bromide based solvent compositions and methods for cleaning articles using said solvent compositions are provided. Such solvent composition comprise about 50 weight percent to 99 weight percent of n-propyl bromide, about 0.5 weight percent to 50 weight percent of alcohol, and at least 0.005 weight percent of a surfactant. Such solvent compositions remove at least one of water or water soluble contaminants. The solvent compositions and methods of the present invention are useful as a degreaser and/or cleaner in both for cold cleaning and hot rinsing systems for cleaning articles.Type: ApplicationFiled: December 12, 2011Publication date: October 24, 2013Applicant: Albemarle CorporationInventors: Keiji Ando, Hisashi Miwa
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Publication number: 20130269728Abstract: Methods for cleaning articles using n-propyl bromide-based solvent compositions are provided. According to one method, an article to be cleaned is contacted with a solvent composition comprising about 50 weight percent to about 99 weight percent n-propyl bromide and about 0.5 weight percent to about 50 weight percent of an alcohol. Such methods remove at least one of water or water soluble contaminants. Such methods are useful as a degreaser and/or cleaner in both cold cleaning and hot rinsing systems for cleaning articles.Type: ApplicationFiled: December 12, 2011Publication date: October 17, 2013Applicant: Albemarle CorporationInventors: Keiji Ando, Hisashi Miwa
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Publication number: 20130037058Abstract: The invention relates to the use of a liquid composition including 1-chloro-3,3,3-trifluoropropene and 1,2-transdichloroethylene for cleaning solid surfaces, the 1-chloro-3,3,3-trifluoropropene and the 1,2-transdichloroethylene being at least 99 wt % of the composition. The invention also relates to a liquid composition containing 1-chloro-3,353-trifluoropropene and 1,2-transdichloroethylene, the 1-chloro-3,3,34triluoropropene and 1,2-transdichloroethylene being at least 99 wt % of the composition and the weight ratio of the 1-chloro-3,3,3?trifluoropropene over the 1,2-transdichloroethylene being between 57:43 and 65:35, preferably between 58:42 and 63:37, and more preferably between 59:41 and 61:39.Type: ApplicationFiled: January 13, 2011Publication date: February 14, 2013Applicant: Arkema FranceInventor: Laurent Abbas
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Patent number: 8163196Abstract: An azeotrope-like mixture consisting essentially of chlorotrifluoropropene and at least one component selected from the group consisting of a C1-C3 alcohol, a C5-C6 hydrocarbon, a halogenated hydrocarbon, methylal, methyl acetone, water, nitromethane, and combinations thereof.Type: GrantFiled: October 26, 2009Date of Patent: April 24, 2012Assignee: Honeywell International Inc.Inventors: Rajat Basu, Leslie Bement, Kane Cook, Ryan Hulse, Gary Knopeck, Hang T. Pham, Rajiv R. Singh, David J. Williams
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Publication number: 20110287996Abstract: An azeotrope-like composition consisting essentially of 1,1,2,3-tetrachloropropene and hydrogen fluoride is provided, as well as methods that involve such an azeotrope-like composition.Type: ApplicationFiled: August 4, 2011Publication date: November 24, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: HSUEH S. TUNG, HANG T. PHAM, RAJIV R. SINGH, DANIEL C. MERKEL, ROBERT JOHNSON
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Patent number: 7985299Abstract: Compositions and methods based on the use of fluoroalkene containing from 3 to 4 carbon atoms and at least one carbon-carbon double bond, such as HFO-1214, HFO-HFO-1233, or HFO-1354, having properties highly beneficial in solvent cleaning applications.Type: GrantFiled: February 9, 2009Date of Patent: July 26, 2011Assignee: Honeywell International Inc.Inventors: Robert C. Johnson, Hsueh Sung Tung, Rajiv Ratna Singh, Ian Shankland
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Publication number: 20110175015Abstract: An azeotrope-like mixture consisting essentially of chlorotrifluoropropene and at least one component selected from the group consisting of pentane, hexane, methanol, and trans-1,2-dichloroethene.Type: ApplicationFiled: March 28, 2011Publication date: July 21, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Rajat S. Basu, Kane D. Cook, Leslie Bement, Gary M. Knopeck, Rajiv Ratna Singh, Ryan Hulse, Hang Pham
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Patent number: 7846355Abstract: Disclosed is a method for removing residue from a surface comprising: contacting the surface with a composition comprising at least one unsaturated fluorinated hydrocarbon selected from the group consisting of compounds having the formula E- or Z—R1CH?CHR2, wherein R1 and R2 are, independently, C1 to C6 perfluoroalkyl groups, or C1 to C6 hydrofluoroalkyl groups, and recovering the surface from the composition.Type: GrantFiled: April 1, 2010Date of Patent: December 7, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Mario Joseph Nappa, Melodie A. Schweitzer, Allen Capron Sievert, Ekaterina N. Swearingen
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Publication number: 20090318323Abstract: Compositions and methods based on the use of fluoroalkene containing from 3 to 4 carbon atoms and at least one carbon-carbon double bond, such as HFO-1214, HFO-HFO-1233, or HFO-1354, having properties highly beneficial in solvent cleaning applications.Type: ApplicationFiled: February 9, 2009Publication date: December 24, 2009Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Robert C. Johnson, Hsueh Sung Tung, Rajiv Ratna Singh, Ian Shankland
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Patent number: 7552737Abstract: The present invention is a substantially nonabrasive, liquid car cleaner composition which cleans car surfaces without an external source of water to wash or rinse. The liquid cleaner is a composition of up to toxaphene 15%, sodium lauryl sulfate 10%, paraffin 10%, isopropyl alcohol 15%, and water 50%.Type: GrantFiled: March 1, 2008Date of Patent: June 30, 2009Inventor: Shahram Ghaemaghami Rad
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Patent number: 7517845Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof.Type: GrantFiled: February 20, 2007Date of Patent: April 14, 2009Assignee: Solvay S.A.Inventors: Pierre Dournel, Pierre Barthelemy
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Patent number: 7371714Abstract: A composition and methods of use for the decontamination of chemical agents, including chemical warfare agents. The decontamination composition is nontoxic, nonflammable and non-corrosive and includes an effective amount of a perfluorinated alkyl bromide or reactive perfluorinated alkyl bromide. The decontamination composition may include an oxidizer and a solvent.Type: GrantFiled: June 22, 2006Date of Patent: May 13, 2008Assignee: The United States of America as represented by the Secretary of the ArmyInventors: David S. Johnston, Gennady E. Platoff, Steven I. Baskin, Thomas P. Logan
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Patent number: 7312186Abstract: A cleaning solution for semiconductor substrates comprising a nonionic surface active agent of the formula (1) and/or the formula (2), a chelating agent and a chelating accelerator: CH3—(CH2)l—O—(CmH2mO)n—X ??(1) wherein l, m and n independently represent a positive number, and X represents a hydrogen atom or a hydrocarbon group; CH3—(CH2)a—O—(CbH2bO)d—(CxH2xO)y—X ??(2) wherein a, b, d, x and y independently represent a positive number, b and x are different, and X represents a hydrogen atom or a hydrocarbon group.Type: GrantFiled: January 5, 2004Date of Patent: December 25, 2007Assignees: Kanto Chemical Co., Inc., NEC Electronics CorporationInventors: Masayuki Takashima, Yoshiko Kasama, Hiroaki Tomimori, Hidemitsu Aoki
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Patent number: 7276471Abstract: Provided are azeotrope-like compositions comprising pentafluoropropane, methanol, and dichloroethylene, and uses thereof, including use in aerosols, refrigerant compositions, refrigeration systems, and blowing agent compositions.Type: GrantFiled: June 14, 2004Date of Patent: October 2, 2007Assignee: Honeywell International Inc.Inventors: Guillermo J. Hitters, Gary Knopeck, Ian R. Shankland, Rajiv R. Singh
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Patent number: 6936579Abstract: Improved hard surface cleaning compositions having an acidic pH, providing good removal of soap scum stains, and further feature low levels of irritability to the user. The compositions comprise about 0.1-10% by weight of an acid sequestrant constituent; about 0.1-10% by weight of a mixture of hydrophobic and hydrophilic solvents; about 0.001-1% by weight of a single constituent which exhibits both anionic surfactant and hydrotrope properties; about 0-20% by weight of one or more optional constituents; the balance to 100% by weight of water, wherein the aqueous hard surface cleaning composition exhibits a pH of 7 or less, especially a pH of about 5 or less. Although acidic, the improved hard surface cleaning compositions feature low irritability to the eyes and skin of consumers. The compositions also provide disinfecting effects.Type: GrantFiled: July 31, 2002Date of Patent: August 30, 2005Assignee: Reckitt Benckiser Inc.Inventor: Virginia Lee Urban
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Patent number: 6806247Abstract: This invention provides azeotrope-like compositions of 1,1,1,2-tetrafluoroethane, 1,1,1,3,3-pentafluoropropane-245fa and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.Type: GrantFiled: June 10, 2002Date of Patent: October 19, 2004Assignee: Honeywell International Inc.Inventors: Mary C. Bogdan, Hang T. Pham, David J. Williams, Gary M. Knopeck, Rajiv R. Singh, Kane D. Cook
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Patent number: 6776853Abstract: In a cleaning apparatus 500, as a pre-cleaning step, cleaning is performed in a first and a second backup cleaning bath 602 and 603 using a hydrocarbon-based cleaning liquid composed of a normal paraffin, such as normal nonane or normal decane, as a primary component and a surfactant such as a fatty acid alkanol amide or a fatty acid N-alkyl alkylene diamine, and as a post-cleaning step, immersion cleaning, shower cleaning, and vapor cleaning are performed in a cleaning bath 601 using a hydrocarbon-based cleaning liquid containing no surfactant.Type: GrantFiled: July 5, 2001Date of Patent: August 17, 2004Assignee: Seiko Epson CorporationInventors: Yoichi Ono, Shinji Hashikura
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Patent number: 6770614Abstract: Precision cleaning compositions for electronic and electrical components comprise at least one halogenated, saturated or unsaturated hydrocarbon other than cis-1,2-dichloroethylene; at least one fluorinated saturated or unsaturated hydrocarbon having the formula CnHmFp, wherein 3≦n≦6, 0≦m≦9 and p≧5; at least one fluorinated saturated or unsaturated ether having the formula CaHbOcFd, wherein 3≦a≦6, 0≦b≦9, c≧1, and d≧5; methylal; at least one simple alcohol; and optionally at least one propellant. In a preferred embodiment, the composition comprises trans-1,2-dichloroethylene, methylal, methyl nonafluorobutyl ether, ethyl nonafluoroisobutyl ether and carbon dioxide. The cleaning compositions are environmentally friendly (non-ozone depleting), are strong enough to tackle tough soils yet mild enough for use on plastic components, are non-flammable, have no flash point, and leave no residue on the substrate.Type: GrantFiled: June 3, 2002Date of Patent: August 3, 2004Assignee: CRC Industries, Inc.Inventors: Richard L. Miller, Melodee A. Nemeth
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Patent number: 6686326Abstract: Disclosed are azeotrope-like compositions comprising 1,1,1,3,3-pentafluorobutane, water and a hydrocarbon selected from the group consisting of n-pentane, isopentane, cyclopentane, n-hexane, and isohexane., said compositions are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.Type: GrantFiled: June 3, 2002Date of Patent: February 3, 2004Assignee: Honeywell International Inc.Inventors: Mary C. Bogdan, Kane D. Cook, Hang T. Pham, Gary M. Knopeck, Rajiv R. Singh
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Patent number: 6660701Abstract: This invention relates to improved stabilizing compositions for n-propyl bromide. More particularly, the cleaning composition includes about 0.1 to 5% Butylene oxide, about 0.1 to 5.0% t-butanol, about 0.1 to 5% acetonitrile, about 0.1 to 5% nitromethane; and the remainder n-propyl bromide. These mixtures are useful as cleaning solvents for the electronic, aerospace, and general manufacturing industries, especially in the area of vapor degreasing.Type: GrantFiled: October 22, 2001Date of Patent: December 9, 2003Assignee: Polysystems USA, Inc.Inventor: Richard Degroot
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Patent number: 6478880Abstract: Multi-component compositions comprising as a first component a fluorinated compound, as a second component a fluorinated aromatic compound and a third component comprising an alkane are disclosed. These compositions can be formulated to provide single phase systems which serve as effective solvents for fluorinated oils as well as petroleum oils. The compositions can serve as solvent cleaners or can be combined directly with oils to provide a delivery system for the oil.Type: GrantFiled: March 26, 2001Date of Patent: November 12, 2002Assignee: Henkel Loctite CorporationInventor: Gary K. Shank
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Patent number: 6451755Abstract: A method of improving the storage stability and broadening the pH stability of an aqueous solution containing a water soluble organosilane is disclosed. The method comprises including within the solution an amount of a saccharide surface active agent selected from the group consisting of alkyl saccharides and alkenyl-saccharides, wherein the amount of saccharide surface active agent is effective to improve the storage stability of and to broaden the pH stability of the resulting solution.Type: GrantFiled: May 4, 2000Date of Patent: September 17, 2002Assignee: S. C. Johnson & Son, Inc.Inventor: Clare L. Norman
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Patent number: 6417153Abstract: The invention provides azeotrope-like compositions consisting essentially of RfCF(OC2H5)CF(CF3)2, where Rf is a straight chain perfluoroalkyl group having 3 carbon atoms, and an organic solvent selected from the group consisting of: (a) unsubstituted straight chain, branched chain, and cyclic saturated alkanes containing 8 to 11 carbon atoms; (b) chlorinated straight chain, branched chain, and cyclic saturated alkanes containing 5 to 7 carbon atoms; (c) aromatic or unsaturated cyclic halogenated or unhalogenated hydrocarbons containing 7 to 10 carbon atoms; (d) esters containing 6 carbon atoms; (e) ketones containing 6 to 7 carbon atoms; (f) glycol ethers containing 6 carbon atoms; and (g) siloxanes containing 8 carbon atoms.Type: GrantFiled: July 20, 2000Date of Patent: July 9, 2002Assignee: 3M Innovative Properties CompanyInventor: John G. Owens
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Patent number: 6402857Abstract: The invention provides a solvent mixture including n-propyl bromide, a mixture of low boiling solvents and, preferably, a defluxing and/or ionics removing additive and/or at least one saturated terpene. The invention also provides a method of cleaning an article (e.g., an electrical, plastic, or metal part) in a vapor degreaser using the solvent mixture. The solvent mixture of the invention is non-flammable, non-corrosive, and non-hazardous. In addition, it has a high solvency and a very low ozone depletion potential. Thus, using the solvent mixture of the invention, oil, grease, rosin flux, and other organic material can be readily removed from the article of interest in an environmentally safe manner.Type: GrantFiled: November 29, 2000Date of Patent: June 11, 2002Assignee: Lawrence Industries, Inc.Inventors: Lawrence A. Clark, James L. Priest
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Patent number: 6403540Abstract: A composition for cleaning and lubricating automotive air conditioners contains a polyol ester lubricant, an antiwear and extreme pressure additive, and a solvent mixture of tetrafluoroethane and 2,3-dihydroperfluoropentane. An automotive air conditioning system and a method of its cleaning and operation with the cleaning and lubricating composition present in the system are presented.Type: GrantFiled: May 25, 2000Date of Patent: June 11, 2002Assignee: Wynn Oil CompanyInventor: Robert C. Richardson
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Patent number: 6395699Abstract: A solvent composition comprising (a) dichloropentafluoropropane, (b) trans-1,2-dichloroethylene and (c) methanol, wherein the proportions of (a), (b) and (c) in the total amount of (a), (b) and (c) are from 57 to 75 wt %, from 20 to 35 wt % and from 5 to 8 wt %, respectively.Type: GrantFiled: August 13, 1996Date of Patent: May 28, 2002Assignee: Asahi Glass Company Ltd.Inventors: Kenroh Kitamura, Michino Ikehata, Masaaki Tsuzaki
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Patent number: 6365565Abstract: 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, tetrahydrofiran, 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: GrantFiled: May 1, 2000Date of Patent: April 2, 2002Assignee: Honeywell International Inc.Inventors: Alagappan Thenappan, Leonard Michael Stachura, Martin Richard Paonessa, Kane David Cook
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Patent number: 6350395Abstract: A stabilizer composition comprising a) an N-alkyl morpholine and b) a straight-chain or cyclic aliphatic amine containing no hetroatoms other than N with a boiling point of at least 150° C. The stabilizer composition is useful for stabilizing a halogenated hydrocarbon against degradation.Type: GrantFiled: June 16, 2000Date of Patent: February 26, 2002Assignee: The Dow Chemical CompanyInventor: Marius Kuemin
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Patent number: 6303668Abstract: 1,1,1,3,3-Pentafluorobutane forms azeotropic or pseudoazeotropic compositions with alkanes possessing 5 or 6 carbon atoms. These compositions can be used in particular as blowing agents in polymeric cellular foams.Type: GrantFiled: November 22, 1999Date of Patent: October 16, 2001Assignee: Solvay (Societe Anonyme)Inventors: Pierre Barthelemy, Olivier Buyle, Pierre Dournel
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Patent number: 6204237Abstract: A nonflammable glycol-based cleaning solvent which is not classified as, a hazardous material is provided. Isopropyl bromide (IPB) and/or n-propyl bromide (NPB), both of which being nonflammable solvents, is mixed to a main component comprised of propylene glycol-based solvents. The thus-obtained glycol-based cleaning solvent is given a nonflammable, flameproof characteristic. The first ingredient, comprised of one type of propylene glycol-based solvent or a plurality of types thereof, has a flash point of 28° C. or above. The amount of IPB and/or NPB being added to 100 pts.wt. of the first ingredient is in the range of 10-70 pts.wt., considering the negative influence of IPB and/or NPB on plastics and rubber.Type: GrantFiled: September 17, 1999Date of Patent: March 20, 2001Assignee: Hitachi Techo Engineering Co., Ltd.Inventors: Masayasu Suzuki, Akiyasu Kaneko
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Patent number: 6176942Abstract: The invention provides a solvent mixture including n-propyl bromide, a mixture of low boiling solvents and, preferably, a defluxing and/or ionics removing additive and/or at least one saturated terpene. The invention also provides a method of cleaning an article (e.g., an electrical, plastic, or metal part) in a vapor degreaser using the solvent mixture. The solvent mixture of the invention is non-flammable, non-corrosive, and non-hazardous. In addition, it has a high solvency and a very low ozone depletion potential. Thus, using the solvent mixture of the invention, oil, grease, rosin flux, and other organic material can be readily removed from the article of interest in an environmentally safe manner.Type: GrantFiled: August 16, 1999Date of Patent: January 23, 2001Assignee: Lawrence Industries, IncInventors: Lawrence A. Clark, James L. Priest
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Patent number: 6165284Abstract: Silver tarnishing is inhibited when using ether stabilized, n-propyl bromide based cleaning compositions by including a saturated aliphatic alcohol in the compositions.Type: GrantFiled: June 25, 1998Date of Patent: December 26, 2000Assignee: Albemarle CorporationInventor: Ronald L. Shubkin
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Patent number: 6133221Abstract: A cleaning process suitable for both mild and aggressive applications employs non-flammable, non-corrosive and environmentally friendly, fluorinated hydrobromocarbon solvent based cleaning compositions.Type: GrantFiled: January 13, 1999Date of Patent: October 17, 2000Assignee: Albemarle CorporationInventors: Phillip R. Beaver, James E. Boone, Dixie E. Goins, Eric W. Liimatta, David L. Shelton, Ronald L. Shubkin
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Patent number: 6103684Abstract: 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: GrantFiled: June 25, 1998Date of Patent: August 15, 2000Assignee: AlliedSignal Inc.Inventors: Alagappan Thenappan, Leonard Michael Stachura, Martin Richard Paonessa, Kane David Cook
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Patent number: 6100229Abstract: The invention relates to novel compositions of 1,1,1,3,3-pentafluoropropane and chlorinated ethylenes and more particularly to azeotrope-like compositions based on these compounds which are useful as solvents in aerosol, refrigeration flushing, oxygen system cleaning and vapor degreasing applications.Type: GrantFiled: October 6, 1998Date of Patent: August 8, 2000Assignee: AlliedSignal Inc.Inventors: Ellen L. Swan, Dennis Michael Lavery
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Patent number: 6087319Abstract: A stable aqueous solution for a hard-surface cleaning detergent comprising a saccharide selected from an alkylsaccharide and an alkenyl-saccharide and an organosilane, wherein said organosilane has at least one hydrolyzable group.Type: GrantFiled: January 25, 1999Date of Patent: July 11, 2000Assignee: S. C. Johnson & Son, Inc.Inventor: Clare L. Norman
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Patent number: 6020298Abstract: Use of solvents capable of removing oily substances without solubilizing them, consisting of hydrofluoropolyethers having the general formulaHF.sub.2 CO(CF.sub.2 O).sub.n (CF.sub.2 CF.sub.2 O).sub.m CF.sub.2 Hwherein n and m are integers comprised between 0 and 20, excluding when m and n are contemporaneously 0, and having boiling point from 30.degree. to 200.degree. C. and having a molar ratio 0/C comprised between 0.5-1.Type: GrantFiled: May 4, 1998Date of Patent: February 1, 2000Assignee: Ausimont S.p.A.Inventors: Rossella Silvani, Gianfranco Spataro, Giuseppe Marchionni
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Patent number: 6010997Abstract: 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: GrantFiled: June 25, 1998Date of Patent: January 4, 2000Assignee: Alliedsignal Inc.Inventors: Alagappan Thenappan, Leonard Michael Stachura, Martin Richard Paonessa, Kane David Cook
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Patent number: 5989456Abstract: 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: GrantFiled: July 23, 1998Date of Patent: November 23, 1999Assignee: Asahi Glass Company Ltd.Inventor: Masaaki Tsuzaki
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Patent number: 5990071Abstract: Silver tarnishing is inhibited when using ether stabilized, n-propyl bromide based cleaning compositions by including a small amount of an acetylenic compound in the compositions.Type: GrantFiled: June 25, 1998Date of Patent: November 23, 1999Assignee: Albemarle CorporationInventor: Ronald L. Shubkin
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Patent number: 5965511Abstract: 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: GrantFiled: January 30, 1998Date of Patent: October 12, 1999Assignee: Elf Atochem S. A.Inventors: Pascal Michaud, Jean-Jacques Martin
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Patent number: 5938859Abstract: The invention provides a solvent mixture including n-propyl bromide, a mixture of low boiling solvents and, preferably, a defluxing and/or ionics removing additive and/or at least one saturated terpene. The invention also provides a method of cleaning an article (e.g., an electrical, plastic, or metal part) in a vapor degreaser using the solvent mixture. The solvent mixture of the invention is non-flammable, non-corrosive, and non-hazardous. In addition, it has a high solvency and a very low ozone depletion potential. Thus, using the solvent mixture of the invention, oil, grease, rosin flux, and other organic material can be readily removed from the article of interest in an environmentally safe manner.Type: GrantFiled: November 10, 1997Date of Patent: August 17, 1999Assignee: Lawrence Industries, Inc.Inventors: Lawrence A. Clark, James L. Priest
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Patent number: 5935921Abstract: The present invention relates to a liquid descaling composition containing a phosphoric acid, a phosphonic acid, a cationic surfactant, an amine oxide and water.Type: GrantFiled: January 26, 1999Date of Patent: August 10, 1999Assignee: Colgate-Palmolive Co.Inventor: Philippe Meunier
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Patent number: 5868799Abstract: Novel surfactants and drying, drycleaning and soil repellency compositions containing such surfactants which utilize such surfactants. The surfactants are fluorine containing quaternary ammonium salts, and the drying, drycleaning and soil repellency compositions contain at least one halocarbon component and at least one of the fluorine containing surfactants. These compositions have the ability to remove water or aqueous films from the surfaces of a broad range of substrates and impart soil repellency to fabrics.Type: GrantFiled: December 5, 1996Date of Patent: February 9, 1999Assignee: AlliedSignal Inc.Inventors: Gary John Zyhowski, David Nalewajek, Leonard Michael Stachura
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Patent number: 5858953Abstract: A 1-bromopropane composition is disclosed, which stays stable even under the condition that it is repeatedly used at high temperatures over an extended period of time as in vapor degreasing. The stabilized 1-bromopropane composition comprises 100 parts by weight of 1-bromopropane, from 0.1 to 5 parts by weight of nitromethane, and from 0.1 to 5 parts by weight of 1,2-butylene oxide or trimethoxymethane.Type: GrantFiled: April 4, 1996Date of Patent: January 12, 1999Assignee: Tosoh CorporationInventors: Shunji Aman, Yoshikazu Oda
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Patent number: 5851977Abstract: Describes nonflammable organic solvent compositions comprising 1,2-dichloroethylene and a halocarbon different than 1,2-dichloroethylene. The 1,2-dichloroethylene consists essentially of trans-1,2-dichloroethylene, cis-1,2-dichloroethylene and mixtures thereof; preferably a major amount of trans-1,2-dichloroethylene; and in particular at least 99% by weight of trans-1,2-dichloroethylene, based on the total weight of 1,2-dichloroethylene. The halocarbon is selected from the group consisting of 1,1,1,3,3,3-hexafluoroisopropanol, perfluoro-tert-butyl alcohol, 1,1,2,3,3-pentafluoropropane, 1-bromo-2-chloro-1,1,2-trifluoroethane, 1,2-dichloro-1,1,2,3,3,3-hexafluoropropane and mixtures thereof.Type: GrantFiled: August 26, 1997Date of Patent: December 22, 1998Assignee: PPG Industries, Inc.Inventors: Earl M. Gorton, Tommy G. Taylor, Ronald D. Olinger
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Patent number: 5827809Abstract: A stable, oil-in-water macroemulsion cleaner is provided which has low toxicity, rapid evaporation rate and leaves low residue after use. The cleaner comprises perchloroethylene, water, ethanol and/or ethyl acetate, and non-ionic surfactant. The macroemulsion cleaner can be used to remove greasy and oily soils from soiled surfaces, and is non-flammable as an aerosol spray with appropriate propellant formulations.Type: GrantFiled: October 15, 1996Date of Patent: October 27, 1998Assignee: Vulcan Materials CompanyInventors: Eric L. Mainz, Janice M. Nyberg