Dry Cleaning (e.g., Using Nonaqueous Fluid, Etc.) Patents (Class 510/285)
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Publication number: 20030121107Abstract: Solvent treatment methods for treating fabric articles, more particularly it relates to oxygenated solvent treatment methods are provided by the present invention.Type: ApplicationFiled: December 17, 2002Publication date: July 3, 2003Inventors: William Michael Scheper, Jean Wevers
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Publication number: 20030125225Abstract: Chemical formulations and methods for removing unwanted material, such as unexposed photoresist, metal oxides, CMP residue, and the like, from semiconductor wafers or other substrates. The formulations utilize a supercritical fluid-based cleaning composition, which may further include (I) co-solvent(s), (II) surfactant(s), (III) chelating agent(s), and/or (IV) chemical reactant(s).Type: ApplicationFiled: November 25, 2002Publication date: July 3, 2003Inventors: Chongying Xu, David W. Minsek, Jeffrey F. Roeder, Michael B. Korzenski, Thomas H. Baum
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Patent number: 6586380Abstract: This invention concerns a composition useful as a paint remover, comprising: alkylene carbonate such as propylene carbonate or ethylene carbonate, hydrogen peroxide, and water, and optionally an alcohol such as benzyl alcohol. In another broad respect, this invention concerns a process for removing paint, comprising: applying a composition containing alkylene carbonate, hydrogen peroxide, and water to a painted surface for a time and under conditions effective to cause blistering or bubbling of the paint. In another broad respect, this invention is a composition useful as a paint remover, comprising: dialkyl carbonate, hydrogen peroxide, and water, optionally containing an alcohol, optionally containing a glycol ether. In another broad respect, this invention is a process for removing paint, comprising: applying a composition containing dialkyl carbonate, hydrogen peroxide, and water to a painted surface for a time and under conditions effective to cause blistering or bubbling of the paint.Type: GrantFiled: February 1, 2002Date of Patent: July 1, 2003Assignee: Huntsman Petrochemical CorporationInventors: Edward T. Marquis, Robert E. Baldwin
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Publication number: 20030115680Abstract: Methods and compositions to treat fabrics with lipophilic fluid and a rebuild agent are provided by the present invention.Type: ApplicationFiled: December 17, 2002Publication date: June 26, 2003Inventor: William Michael Scheper
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Patent number: 6582476Abstract: The present disclosure relates to durable wrinkle reduction products that have improved softness. In a preferred embodiment, silicone containing compounds are incorporated into the cross-linked matrix of cellulosic fibers.Type: GrantFiled: November 6, 2000Date of Patent: June 24, 2003Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: David Alan Binder, Dennis Stephen Murphy
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Patent number: 6576323Abstract: Articles designed to clean/refresh soiled fabrics are improved by means of texturing at least one surface and/or by applying tackiness agents. In use, the articles rub against the fabrics, whereupon lint removed from the fabrics is trapped and retained by the tackiness agent. Refolding of the articles during use is substantially minimized by imparting texture to one or more of the article's surfaces.Type: GrantFiled: March 16, 2000Date of Patent: June 10, 2003Assignee: Procter & GambleInventors: Rodney Mahlon Wise, Steven Barrett Rogers
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Publication number: 20030097718Abstract: A sequential process for dry cleaning laundry articles is provided comprisingType: ApplicationFiled: October 23, 2002Publication date: May 29, 2003Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Joop Evers, Machiel Goedhart, Fred Kerpels, Cornelis Gerhard Kralingen van, Pieter Everhardus Overdevest, Hank Robert Reinhoudt, Karin Vrieswijk
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Publication number: 20030087782Abstract: A process for dry cleaning laundry articles comprising at least one dry cleaning step followed by at least one regeneration step wherein said regeneration step comprises contacting the articles with a regeneration composition comprisingType: ApplicationFiled: October 23, 2002Publication date: May 8, 2003Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Joop Evers, Machiel Goedhart, Fred Kerpels, Cornelis Gerhard Kralingen van, Pieter Everhardus Overdevest, Hank Robert Reinhoudt, Karin Vrieswijk
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Patent number: 6558432Abstract: A cleaning system that utilizes an organic cleaning solvent and pressurized fluid solvent is disclosed. The system has no conventional evaporative hot air drying cycle. Instead, the system utilizes the solubility of the organic solvent in pressurized fluid solvent as well as the physical properties of pressurized fluid solvent. After an organic solvent cleaning cycle, the solvent is extracted from the textiles at high speed in a rotating drum in the same way conventional solvents are extracted from textiles in conventional evaporative hot air dry cleaning machines. Instead of proceeding to a conventional drying cycle, the extracted textiles are then immersed in pressurized fluid solvent to extract the residual organic solvent from the textiles. This is possible because the organic solvent is soluble in pressurized fluid solvent. After the textiles are immersed in pressurized fluid solvent, pressurized fluid solvent is pumped from the drum.Type: GrantFiled: April 25, 2001Date of Patent: May 6, 2003Assignee: R. R. Street & Co., Inc.Inventors: James E. Schulte, Timothy L. Racette, Gene R. Damaso
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Publication number: 20030074742Abstract: A dry cleaning composition comprising a volatile siloxane and a mixture of different classes of organic surfactants and, optionally water, and a method for dry cleaning comprising contacting an article with a composition comprising a volatile siloxane and a mixture of different classes of organic surfactants.Type: ApplicationFiled: May 24, 2002Publication date: April 24, 2003Applicant: GENERAL ELECTRIC COMPANYInventors: Robert J. Perry, Donna Ann Riccio, Larry D. Ryan, John A. Kilgour
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Patent number: 6552090Abstract: Described are compositions comprising perfluoroalkyl haloalkyl ethers and, optionally, surfactant; uses for perfluoroalkyl haloalkyl ether compounds and compositions thereof, optionally comprising surfactant; and perfluoroalkyl haloalkyl ethers.Type: GrantFiled: September 15, 1997Date of Patent: April 22, 2003Assignee: 3M Innovative Properties CompanyInventors: Frederick E. Behr, Richard M. Flynn
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Publication number: 20030070238Abstract: The present invention relates to a system for processing a lipophilic fluid, more particularly to a system for processing a lipophilic fluid utilized in a fabric treating process, even more particularly to a system for processing a lipophilic fluid such that contaminants such as water, surfactants, water, body/food oils, fatty acids, and dyes can be removed from the lipophilic fluid. In other words, the present invention relates to the “cleaning up” of or purification of a lipophilic fluid such that it can be re-used in a lipophilic fluid system.Type: ApplicationFiled: September 10, 2002Publication date: April 17, 2003Applicant: The Procter & Gamble CompanyInventors: Arseni Valerevich Radomyselski, Paul Amaat Raymond Gerald France, Dewey Edward Burton, Michael Jason Ullom, Marcus Anthony Bertin, Scott Edward Powell, Eddy Vos, Veerle Maria Nathalie Lootvoet, William Michael Scheper, John Christian Haught, John Christopher Deak
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Patent number: 6548465Abstract: A dry cleaning composition comprising a volatile siloxane and an aminofunctional siloxane and, optionally water or acid, and a method for dry cleaning comprising contacting an article with a composition comprising a volatile siloxane and an aminofunctional siloxane.Type: GrantFiled: December 14, 2000Date of Patent: April 15, 2003Assignee: General Electric CompanyInventors: Robert J. Perry, Donna Ann Riccio, Larry D. Ryan
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Patent number: 6548466Abstract: This invention is directed to a surfactant comprising a heterocyclic group that results in superior cleaning in a dry cleaning system. The surfactant can have one or more heteroatom and can result in reverse micelle formation in a densified gas like densified carbon dioxide.Type: GrantFiled: September 26, 2002Date of Patent: April 15, 2003Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Dennis Stephen Murphy, Robert Joseph Ahart
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Publication number: 20030060386Abstract: This invention is directed to a surfactant comprising a heterocyclic group that results in superior cleaning in a dry cleaning system. The surfactant can have one or more heteroatom and can result in reverse micelle formation in a densified gas like densified carbon dioxide.Type: ApplicationFiled: September 26, 2002Publication date: March 27, 2003Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Dennis Stephen Murphy, Robert Joseph Ahart
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Patent number: 6521580Abstract: A dry cleaning composition comprising a volatile siloxane and an organic surfactant and, optionally water, and a method for dry cleaning comprising contacting an article with a composition comprising a volatile siloxane and an organic surfactant.Type: GrantFiled: December 6, 2000Date of Patent: February 18, 2003Assignee: General Electric CompanyInventors: Robert J. Perry, Donna Ann Riccio, Larry D. Ryan
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Publication number: 20020184715Abstract: An improved dry cleaning apparatus and method for the non-aqueous cleaning of fabric materials comprises the introduction of steam into a dryer chamber containing fabric materials previously washed in a non-aqueous organic cleaning solvent such as perchloroethylene. The steam is heated at a sufficient temperature for a duration of time, both of which are determined by the type of fabric and solvents involved. The heated steam volatilizes any excess cleaning solvent contained in or on said fabric creating a gaseous water/solvent mixture which is then subsequently separated from the fabric materials. The gaseous mixture can be condensed, its component parts separated and re-used in the cycle again.Type: ApplicationFiled: June 6, 2001Publication date: December 12, 2002Inventor: Robert E. Taylor
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Patent number: 6491729Abstract: A dry-cleaning solvent composition for dry-cleaning is disclosed, comprising a compound or solvent selected from the group consisting of propylene glycol methyl ether formate, propylene glycol methyl ether acetate, propylene glycol methyl ether propionate, propylene glycol methyl ether butyrate, propylene glycol ethyl ether formate, propylene glycol ethyl ether acetate, propylene glycol ethyl ether propionate, propylene glycol ethyl ether butyrate, ethylene glycol methyl ether formate, ethylene glycol methyl ether acetate, ethylene glycol methyl ether propionate. ethylene glycol methyl ether butyrate, and the mixture thereof. The dry-cleaning solvent composition may further comprise a compound or solvent selected from the group consisting of perchloroethylene, stoddard solvent type I, stoddard solvent type II, and the mixture thereof, in an amount of below 70 wt %.Type: GrantFiled: January 28, 2000Date of Patent: December 10, 2002Inventors: Chin Yen Lee, Shen Kung Liao
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Publication number: 20020174493Abstract: A dry cleaning composition comprising a volatile siloxane and an aminofunctional siloxane and, optionally water or acid, and a method for dry cleaning comprising contacting an article with a composition comprising a volatile siloxane and an aminofunctional siloxane.Type: ApplicationFiled: December 14, 2000Publication date: November 28, 2002Applicant: General Electric CompanyInventors: Robert J. Perry, Donna Ann Riccio, Larry D. Ryan
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Patent number: 6482784Abstract: This invention is directed to a surfactant comprising a heterocyclic group that results in superior cleaning in a dry cleaning system.Type: GrantFiled: August 15, 2001Date of Patent: November 19, 2002Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Dennis Stephen Murphy, Robert Joseph Ahart
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Patent number: 6475968Abstract: This invention is directed to a surfactant comprising a carbohydrate group that results in superior cleaning in a dry cleaning system. The surfactant has a hydrocarbon group that is more solvent-philic than a carbohydrate group, and can result in reverse micelle formation in a densified gas like densified carbon dioxide.Type: GrantFiled: January 31, 2002Date of Patent: November 5, 2002Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Dennis Stephen Murphy, David Alan Binder
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Publication number: 20020155966Abstract: This invention is directed to a surfactant comprising a heterocyclic group that results in superior cleaning in a dry cleaning system. The surfactant can have one or more heteroatom and can result in reverse micelle formation in a densified gas like densified carbon dioxide.Type: ApplicationFiled: August 15, 2001Publication date: October 24, 2002Inventors: Dennis Stephen Murphy, Robert Joseph Ahart
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Patent number: 6461387Abstract: A system for dry cleaning soils from fabrics comprising densified carbon dioxide and a surfactant in the densified CO2. The densified carbon dioxide is in a temperature range of about −78.5° C. to about 100° C. and a pressure range of about 14.7 to about 10,000 psi. At least 0.1% by volume of a modifier is preferably present. The surfactant has a polysiloxane a branched polyalkylene oxide or a halocarbon group which is a functional CO2-philic moiety connected to a CO2-phobic functional moiety. The surfantant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.Type: GrantFiled: February 4, 2000Date of Patent: October 8, 2002Assignee: Lever Brothers Company, division of Conopco, Inc.Inventors: Sharon Harriott Jureller, Judith Lynne Kerschner, Dennis Stephen Murphy
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Publication number: 20020142932Abstract: A dry cleaning composition comprising:Type: ApplicationFiled: December 28, 2001Publication date: October 3, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Machiel Goedhart, Fred Kerpels, Cornelis Gerhard Van Kralingen, Pieter E. Overdevest, Karin Vrieswijk
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Publication number: 20020133885Abstract: An process for treating or cleaning fabric articles, especially articles of clothing, linen and drapery, wherein the method comprises contacting the fabric articles to be cleaned or treated with a cleaning fluid comprising a lipophilic fluid and removing from the fabric articles a portion of the cleaning fluid.Type: ApplicationFiled: May 4, 2001Publication date: September 26, 2002Applicant: The Procter & Gamble CompanyInventors: Anna Vadimovna Noyes, John Cort Severns, Frederick Anthony Hartman, James Charles Theophile Roger Burckett-St. Laurent, Arseni V. Radomyselski, Paul Amaat France, Jeffrey John Scheibel, Christiaan Arthur Jacques Kamiel Thoen, John Christopher Deak, Phillip Kyle Vinson, Nabil Yaqub Sakkab
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Publication number: 20020129840Abstract: Disclosed is a composition of about 20 to about 80 wt % benzotrifluoride and about 20 to about 80 wt % trichloroethylene. Up to about 1 wt % of a stabilizer for the trichloroethylene can be included in the composition.Type: ApplicationFiled: February 13, 2002Publication date: September 19, 2002Applicant: EMERALD AGROCHEMICALS COMPANY AVVInventors: Hang-Chang Bobby Chen, Edward A. Rowe
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Publication number: 20020124326Abstract: A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, the compound optionally containing additional catenary heteroatoms. The compounds exhibit good solvency properties while being environmentally acceptable.Type: ApplicationFiled: December 18, 2001Publication date: September 12, 2002Applicant: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Mark W. Grenfell, George G. I. Moore, John G. Owens, Dean S. Milbrath
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Publication number: 20020116769Abstract: The invention discloses a novel method for dry cleaning of a fabric material characterized by the use of a unique dry cleaning solvent which is a tris(trimethylsiloxy) silane compound represented by the general formula of RSi(—O—SiMe3)3, in which Me is a methyl group and R is a monovalent hydrocarbon group of 1 to 6 carbon atoms or, preferably, a methyl group, or a mixture thereof with a petroleum-based hydrocarbon solvent in a limited proportion. In addition to the excellent effect of dry cleaning equivalent to that of conventional dry cleaning solvents and little unpleasant smell remaining on the fabric material, the solvent used in the inventive method is little liable for the problems of environmental pollution against public and workers' health and the problem of ozone layer destruction in the aerosphere due to emission of vapors of halogenated hydrocarbon solvents can be solved by the inventive method.Type: ApplicationFiled: December 26, 2001Publication date: August 29, 2002Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Michihiro Sugo, Satoshi Asai
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Publication number: 20020119898Abstract: In a method of dry cleaning, textile fabrics are contacted with densified carbon dioxide composition. The composition comprises CO2 in a weight ratio to the polar solvent of 5:1 to 100,000:1, preferably from 10:1 to 10,000:1, a hydrophilic fluorescer and surfactant.Type: ApplicationFiled: December 19, 2001Publication date: August 29, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Jan Kevelam, Remco Johannes Koppert, Irene Erica Smit
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Publication number: 20020115582Abstract: A dry cleaning composition comprising a volatile siloxane and an organic surfactant and, optionally water, and a method for dry cleaning comprising contacting an article with a composition comprising a volatile siloxane and an organic surfactant.Type: ApplicationFiled: December 6, 2000Publication date: August 22, 2002Applicant: General Electric CompanyInventors: Robert J. Perry, Donna Ann Riccio, Larry D. Ryan
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Patent number: 6429176Abstract: Disclosed is a composition of about 20 to about 80 wt % benzotrifluoride and about 20 to about 80 wt % trichloroethylene. Up to about 1 wt % of a stabilizer for the trichloroethylene can be included in the composition.Type: GrantFiled: February 19, 2002Date of Patent: August 6, 2002Assignee: Emerald Agrochemicals Company AVVInventors: Hang-Chang Bobby Chen, Edward A. Rowe
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Publication number: 20020082180Abstract: In a method of dry cleaning, textile fabrics are contacted with densified carbon dioxide composition. The composition further comprises a fluorescer, said fluorescer having either a log P of at least 2 or at least one Brönsted acidic or basic functional group with a pKa of more than 7.Type: ApplicationFiled: December 19, 2001Publication date: June 27, 2002Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Jan Kevelam, Remco Johannes Koppert, Irene Erica Smit
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Patent number: 6376452Abstract: A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, the compound optionally containing additional catenary heteroatoms. The compounds exhibit good solvency properties while being environmentally acceptable.Type: GrantFiled: March 31, 1999Date of Patent: April 23, 2002Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Mark W. Grenfell, George G. I. Moore, John G. Owens, Dean S. Milbrath
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Patent number: 6372703Abstract: A liquid non-aqueous detergent is presented containing a nonionic surfactant, a builder, a bleaching agent, and a cationic stabilizer of formula I, II or III: where the groups R1 independently of one another are C1-6 alkyl, alkenyl or hydroxyalkyl groups, the groups R2 independently of one another are C8-28 alkyl or alkenyl groups, R3 has the same meaning as R1 or represents (CH2)n—T—R2, R4 has the same meaning as R1 or R2 or represents (CH2)n—T—R2, T represents —CH2—, —O—CO— or —CO—O— and n is an integer of from 0 to 5. The solid bleaching agents in the stabilized non-aqueous liquid detergent retain their activity after prolonged storage.Type: GrantFiled: July 15, 1999Date of Patent: April 16, 2002Assignee: Henkel Komanditgesellschaft auf AktienInventors: Bernd Richter, Ulrich Pegelow
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Patent number: 6369014Abstract: This invention is directed to a surfactant comprising a carbohydrate group that results in superior cleaning in a dry cleaning system. The surfactant has a hydrocarbon group that is more solvent-philic than a carbohydrate group, and can result in reverse micelle formation in a densified gas like densified carbon dioxide.Type: GrantFiled: May 24, 2001Date of Patent: April 9, 2002Assignee: Unilever Home & Personal Care USAInventors: Dennis Stephen Murphy, David Alan Binder
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Patent number: 6348443Abstract: A solvent composition comprising dichloropentafluoropropane, perfluorobutyl methyl ether and an alcohol.Type: GrantFiled: November 21, 2000Date of Patent: February 19, 2002Assignee: Asahi Glass Company, LimitedInventors: Tsuyoshi Hanada, Masaaki Tsuzaki
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Publication number: 20010054202Abstract: The present invention relates to automatic home laundering processes for cleaning or refreshing fabric articles, especially articles of clothing, linen and drapery. The present invention also relates to automatic home laundering of mixed loads of fabric articles comprising machine washable fabric articles and dry clean only fabric articles.Type: ApplicationFiled: May 4, 2001Publication date: December 27, 2001Inventors: John Cort Severns, Frederick Anthony Hartman, Christiaan Arthur Jacques Kamiel Thoen, Paul Amaat France, Phillip Kyle Vinson
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Patent number: 6313083Abstract: The invention provides azeotrope-like compositions consisting essentially of RfOCH3, where Rf 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: GrantFiled: February 14, 2001Date of Patent: November 6, 2001Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 6313079Abstract: This invention is directed to a surfactant comprising a heterocyclic group that results in superior cleaning in a dry cleaning system. The surfactant can have one or more heteroatom and can result in reverse micelle formation in a densified gas like densified carbon dioxide.Type: GrantFiled: March 2, 2000Date of Patent: November 6, 2001Assignee: Unilever Home & Personal Care USA, division of ConopcoInventor: Dennis Stephen Murphy
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Publication number: 20010034912Abstract: Methods for cleaning an article comprise contacting the article with a cleaning composition comprising a linear or branched volatile siloxane. In one embodiment, the method for cleaning the article comprises contacting the article with a cleaning composition comprising, based upon 100 pbw of the cleaning composition, 80 pbw to 99.99 pbw of a linear or branched volatile siloxane. In another embodiment, the method for cleaning the article comprises contacting the article with a cleaning composition comprising, based upon 100 pbw of the cleaning composition, 50.1 pbw to 99 pbw of a linear or branched volatile siloxane and a cyclic siloxane.Type: ApplicationFiled: June 22, 2001Publication date: November 1, 2001Inventors: John A. Kilgour, Robert J. Perry
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Patent number: 6309425Abstract: A novel cleaning composition for dry cleaning applications is described. The cleaning composition utilizes a stain removal composition having a stain removal surfactant and a stain removal solvent, and the dry cleaning applications use a solvent which is a gas at standard temperature and pressure, a biodegradable functionalized hydrocarbon or a silicone comprising solvent.Type: GrantFiled: October 12, 1999Date of Patent: October 30, 2001Assignee: Unilever Home & Personal Care, USA, division of Conopco, Inc.Inventor: Dennis Stephen Murphy
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Patent number: 6310029Abstract: A method for cleaning an article comprises contacting the article with a cleaning composition comprising a linear or branched volatile siloxane.Type: GrantFiled: April 9, 1999Date of Patent: October 30, 2001Assignee: General Electric CompanyInventors: John A. Kilgour, Robert J. Perry
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Patent number: 6299652Abstract: A system for dry cleaning soils from fabrics comprising densified carbon dioxide and a surfactant in the densified CO2. The densified carbon dioxide is in a temperature range of about −78.5° C. to about 100° C. and a pressure range of about 14.7 to about 10,000 psi. At least 0.1% by volume of a modifier is preferably present. The surfactant has a polysiloxane, a branched polyalkylene oxide or a halocarbon group which is a functional CO2-philic moiety connected to a CO2-phobic functional moiety. The surfactant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.Type: GrantFiled: May 10, 2000Date of Patent: October 9, 2001Assignee: Lever Brothers Company, division of Conopco, Inc.Inventors: Sharon Harriott Jureller, Judith Lynne Kerschner
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Patent number: 6297206Abstract: A method for dry-cleaning garments or fabrics in carbon dioxide comprises contacting a garment or fabric article to be cleaned with a liquid dry cleaning composition for a time sufficient to clean the article, said liquid dry-cleaning composition comprising a mixture of carbon dioxide, water, a first surfactant, and a second surfactant, and then separating the article from the liquid dry cleaning composition. The first surfactant comprises a CO2-philic group covalently joined to a hydrophilic group; and the second surfactant comprising a CO2-philic group covalently joined to a lipophilic group. In the alternative, a single surfactant containing all three of a CO2-philic group, a lipophilic group, and a hydrophilic group covalently joined to one another may also be employed. Systems useful for carrying out the foregoing are also disclosed.Type: GrantFiled: January 23, 2001Date of Patent: October 2, 2001Assignee: MiCell Technologies, Inc.Inventors: Timothy J. Romack, James P. DeYoung
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Publication number: 20010020308Abstract: The invention is directed to a dry-cleaning solvent and method for dry-cleaning. The dry-cleaning solvent and method employ a linear silicon comprising oligomer that unexpectedly results in excellent cleaning properties in the absence of any known environmental or health risks.Type: ApplicationFiled: May 9, 2001Publication date: September 13, 2001Applicant: Unilever Home & Personal Care USAInventor: Dennis Stephen Murphy
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Patent number: 6288018Abstract: 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: GrantFiled: February 14, 2001Date of Patent: September 11, 2001Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 6280481Abstract: A method for dry-cleaning articles such as fabrics and clothing in carbon dioxide while concurrently applying a sizing agent to the articles comprises contacting an article to be cleaned with a liquid dry cleaning composition for a time sufficient to clean the fabric. The liquid dry-cleaning composition comprises a mixture of carbon dioxide, a surfactant, a sizing agent. An organic co-solvent is preferably included. After the contacting step, the article is separated from the liquid dry cleaning composition. The method is preferably carried out at ambient temperature. Preferred sizing agents are low molecular weight hydrocarbon resins. The surfactant is preferably one that does not contain a CO2-philic group. The organic co-solvent is preferably an alkane and has a flash point above 140° F.Type: GrantFiled: July 21, 1999Date of Patent: August 28, 2001Assignee: MiCell Technologies, Inc.Inventors: Bernadette Storey-Laubach, Karla Litaker, James DeYoung, Gina Stewart
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Publication number: 20010013148Abstract: The present invention provides a dry cleaning process that facilitates distribution of detergent and solvent and (optionally) facilitates recovery of cleaning by-products in conjunction with the cleaning of articles at a dry cleaning facility.Type: ApplicationFiled: April 26, 2001Publication date: August 16, 2001Inventors: James B. McClain, Timothy J. Romack, James P. DeYoung, R. Bradley Lienhart, Joseph M. DeSimone, Kenneth L. Huggins
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Publication number: 20010009894Abstract: A method for dry-cleaning garments or fabrics in carbon dioxide comprises contacting a garment or fabric article to be cleaned with a liquid dry cleaning composition for a time sufficient to clean the article, said liquid dry-cleaning composition comprising a mixture of carbon dioxide, water, a first surfactant, and a second surfactant, and then separating the article from the liquid dry cleaning composition. The first surfactant comprises a CO2-philic group covalently joined to a hydrophilic group; and the second surfactant comprising a CO2-philic group covalently joined to a lipophilic group. In the alternative, a single surfactant containing all three of a CO2-philic group, a lipophilic group, and a hydrophilic group covalently joined to one another may also be employed. Systems useful for carrying out the foregoing are also disclosed.Type: ApplicationFiled: January 23, 2001Publication date: July 26, 2001Inventors: Timothy J. Romack, James P. DeYoung
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Patent number: 6258130Abstract: The invention is directed to a dry-cleaning solvent and method for dry-cleaning. The dry-cleaning solvent and method employ a linear silicon comprising oligomer that unexpectedly results in excellent cleaning properties in the absence of any known environmental or health risks.Type: GrantFiled: November 30, 1999Date of Patent: July 10, 2001Assignee: Unilever Home & Personal Care, a division of Conopco, Inc.Inventor: Dennis Stephen Murphy