Dry Cleaning Patents (Class 8/142)
  • Patent number: 4075375
    Abstract: A process for the preparation of cleaning materials comprising a cleaning fibrous substrate and an oiling composition adsorbed and impregnated in said fibrous substrate, said process comprising contacting a cleaning fibrous substrate composed of cellulose fibers or a combination of up to 30 % by weight, based on the total fibers, of synthetic fibers and the remainder of cellulose fibers with an oil-in-water emulsion of an oiling composition consisting substantially of (a) an oiling agent composed of mineral oil, a synthetic lubricating oil or a mixture thereof and having a viscosity of 8 to 100 cps as measured at 100.degree. F., (b) 0.5 to 35 % by weight, based on the total oiling composition, of an amphoteric surface active agent or a surface active agent having in the molecule both cationic active and non-ionic active groups and (c) 0.3 to 5.0 % by weight, based on the total oiling composition, of a benzene-carboxylic acid ester having a solubility parameter of from 8 to 12.
    Type: Grant
    Filed: January 30, 1976
    Date of Patent: February 21, 1978
    Assignee: Duskin Franchise Co. Ltd.
    Inventor: Toshiyoshi Komatsu
  • Patent number: 4065259
    Abstract: Fluorocarbon dye dispersion comprising an organic disperse dye; a certain normally liquid fluorocarbon having a fluorine to carbon atom ratio of at least 1.5, a solubility parameter of not greater than 7.0 and a critical temperature of at least 135.degree. C., and, optionally, an effective amount of a compound having both surface activity and solubility in the normally liquid fluorocarbon, said dye dispersion being useful in the exhaust dyeing of disperse dyeable synthetic polymers, in the form of films, fibers or fabrics, by the process comprising contacting the polymer with the dye disperson at a temperature above the glass transition temperature of the polymer for a sufficient time to exhaust the dye onto the polymer.
    Type: Grant
    Filed: April 23, 1976
    Date of Patent: December 27, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harold Leonard Jackson
  • Patent number: 4065258
    Abstract: The dissolution of a small amount of certain reactive epoxy-containing silicone compounds in solvents used to dry clean leather results in improved and more durable softness and water resistance properties being imparted to the leather.
    Type: Grant
    Filed: March 5, 1976
    Date of Patent: December 27, 1977
    Assignee: Union Carbide Corporation
    Inventor: Haywood Gordon France
  • Patent number: 4047889
    Abstract: A process is disclosed for the rapid, continuous and waterless dyeing of textile and plastic materials in which the dyestuff is dissolved, suspended or dispersed in a high boiling solvent, such as glycol or glycol ether, for carrying out the dyeing step per se, after which the dyed textile or plastic material (after cooling if desired) is subjected to a washing with a low boiling liquid such as methanol or ethanol (preferably the former) or a chlorinated hydrocarbon solvent, and subsequently dried. The entire series of operations is carried out under nonaqueous or substantially nonaqueous conditions with the complete or substantially complete recovery and recycling of the used dyestuff, the used high boiling solvent, and the used low boiling wash liquid.
    Type: Grant
    Filed: January 9, 1976
    Date of Patent: September 13, 1977
    Assignee: Martin Processing, Inc.
    Inventor: Julius Hermes
  • Patent number: 4048240
    Abstract: Nitrogen trichloride produced in situ from the reaction of a chlorine source and a nitrogen source in a non-aqueous fluid is adsorbed on an adsorption media and serves to oxidize, bleach or deactivate contaminants and foreign matter of the fluid similarly adsorbed on said adsorption media.
    Type: Grant
    Filed: October 19, 1976
    Date of Patent: September 13, 1977
    Inventor: Robert Frederick Connelly
  • Patent number: 4045174
    Abstract: A load of garments or other textile material to be washed is presoaked in organic solvent, e.g. in a rotating drum, and is then immersed within the same vessel in a water bath while still permeated by a substantial quantity of solvent. During this immersion, the vessel is gradually heated to the boiling point of the solvent, or of the azeotropic water/solvent mixture, which is below the boiling point of water so that only a part of the wash liquor is vaporized. The evaporation can be accelerated by placing the vessel under a partial vacuum. The evaporation rate of the solvent is measured and the washing cycle is halted as soon as that rate drops to zero or below a predetermined limit, with subsequent drying of the load by, for example, centrifugation.
    Type: Grant
    Filed: January 10, 1975
    Date of Patent: August 30, 1977
    Assignee: Bowe, Bohler & Weber KG Maschinenfabrik
    Inventors: Heinrich Fuhring, Johannes Helmut Sieber
  • Patent number: 4039465
    Abstract: Constant boiling binary admixtures are formed by 1,2-dichloro-1,1-difluoroethane (F-132B) with acetone, with methanol, and with ethanol; and a constant boiling ternary admixture is formed with diethyl ether and ethanol. Constant boiling binary admixtures are formed by 1,1,2-trifluoroethane (F-143) with octafluorocyclolbutane, with 1,2-dichloro-1,1,2,2-tetrafluoroethane, with dichlorofluoromethane, with trichlorofluoramethane, with 1,1,2-trichloro-1,2,2-trifluoroethane, and with 1,1,1-trifluoro-2-chloroethane.
    Type: Grant
    Filed: May 27, 1976
    Date of Patent: August 2, 1977
    Assignee: Phillips Petroleum Company
    Inventors: William Milton Hutchinson, deceased, by Florence M. Hutchinson, executrix
  • Patent number: 4026798
    Abstract: Peracids and a water-soluble inorganic polyphosphate salt are used in the treatment of dirty dry cleaning baths to permit longer operation between distillation.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: May 31, 1977
    Assignee: FMC Corporation
    Inventors: Harry Marcus Castrantas, John T. Gresham
  • Patent number: 4023927
    Abstract: A dry cleaning process is provided which is effective for preventing wet-soil redeposition and improving stain-release characteristics of polyester textile material. The process advantages are accomplished by a dry cleaning solvent system contaning hydroxypropyl methyl cellulose as an anti-soiling agent.
    Type: Grant
    Filed: May 8, 1975
    Date of Patent: May 17, 1977
    Assignee: Celanese Corporation
    Inventor: Alex S. Forschirm
  • Patent number: 4024086
    Abstract: Constant boiling binary admixtures are formed by 1,2-dichloro-1,1-difluoroethane (F-132B) with acetone, with methanol, and with ethanol; and a constant boiling ternary admixture is formed with diethyl ether and ethanol. Constant boiling binary admixtures are formed by 1,1,2-trifluoroethane (F-143) with octafluorocyclobutane, with 1,2-dichloro-1,1,2,2-tetrafluoroethane, with dichlorofluoromethane, with trichlorofluoromethane, with 1,1,2-trichloro-1,2,2-trifluoroethane, and with 1,1,1-trifluoro-2-chloroethane.
    Type: Grant
    Filed: August 6, 1975
    Date of Patent: May 17, 1977
    Assignee: Phillips Petroleum Company
    Inventor: William Milton Hutchinson, deceased
  • Patent number: 4014805
    Abstract: Improved dry cleaning formulation containing a dry cleaning solvent, water, inorganic polyphosphate salt, hydrogen peroxide and a suitable detergent surfactant having a pH value of from 5 to 9, which minimizes equipment corrosion and maintains fabric strength while effectively removing hydrophilic stains.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: March 29, 1977
    Assignee: FMC Corporation
    Inventor: Harry Marcus Castrantas
  • Patent number: 4013575
    Abstract: Textile fabric stain removal is significantly improved by including in conventional dry cleaning solvent baths, a preformed or in situ generated peracid.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: March 22, 1977
    Assignee: FMC Corporation
    Inventors: Harry Marcus Castrantas, John T. Gresham
  • Patent number: 4012194
    Abstract: Extraction and cleaning processes characterized by the use of liquid carbon dioxide as the extraction and cleaning solvent. This solvent is disclosed as being applied to plant material for the extraction of essential oils and as being used in place of the conventional solvents in the dry cleaning of garments.
    Type: Grant
    Filed: August 2, 1973
    Date of Patent: March 15, 1977
    Inventor: Raymond L. Maffei
  • Patent number: 4010988
    Abstract: A towel apparatus which handles an endless towel within a cabinet and subjects the same to cleaning and drawing, making use of a low vapor pressure chemical type solvent.
    Type: Grant
    Filed: March 7, 1975
    Date of Patent: March 8, 1977
    Inventor: James W. Schwartz
  • Patent number: 3996158
    Abstract: This invention relates to the use of a limited specie of glassy rhyolite, specifically pumicite as a filter aid for the cleaning of solvent in the drycleaning industry. The invention is particularly directed to the new and unexpected results accruing from the use of pumicite for accomplishing extremely low, non-volatile levels in the solvent and for also removing objectionable fatty acids and odor from the solvent while simultaneously making its distillation unnecessary and removing sufficient moisture to give clothes a softer feel, and fewer wrinkles.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: December 7, 1976
    Inventor: Marvin D. Cohen
  • Patent number: 3990844
    Abstract: Ion-exchange resins provide a convenient means for reducing the concentration of hydrogen peroxide in drycleaning solvents. The ion-exchange method is adaptable to automated drycleaning processes requiring removal of residual hydrogen peroxide from fabrics.
    Type: Grant
    Filed: December 11, 1973
    Date of Patent: November 9, 1976
    Assignee: PPG Industries, Inc.
    Inventor: Charles L. Cormany
  • Patent number: 3969073
    Abstract: A dry cleaning composition comprising a dry cleaning solvent, a detergent and an organic ester of ortho-titanic acid and a process for its use which results in decreased soil redeposition.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: July 13, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Albert Robert Eanzel
  • Patent number: 3963419
    Abstract: A laundry oil containing 0.02 to 2.0 weight percent 8-hydroxyquinoline as an antibacterial agent and the process of laundering mops and other fabrics used to wipe dust with such oil. In a preferred aspect of the invention the mops, etc. are laundered directly with the oil. When copper is present in the laundering apparatus the laundry oil preferably contains 0.0001 to 0.5 weight percent benzotriazole.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: June 15, 1976
    Assignee: Sun Oil Company of Pennsylvania
    Inventor: Richard E. Ware
  • Patent number: 3961880
    Abstract: Continuous process for the optical brightening and printing of organic fiber material, wherein the material is dry cleaned and at least one optical brightener applied from an organic liquor, the said material being then intermediately dried, printed, and subsequently finished by a heat treatment.
    Type: Grant
    Filed: June 18, 1974
    Date of Patent: June 8, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Gerhard Reinert, Andres Schaub, Paul Dussy
  • Patent number: 3961891
    Abstract: A laundry oil contains 0.0001 to 0.10 weight percent phenyl mercury oleate as an antibacterial agent. Also disclosed is the process of laundering fabrics used to wipe dust with such an oil and a concentrate for adding to an oil prior to its use as a laundry oil.
    Type: Grant
    Filed: December 6, 1974
    Date of Patent: June 8, 1976
    Assignee: Sun Oil Company of Pennsylvania
    Inventor: Richard E. Ware
  • Patent number: 3957428
    Abstract: A process for uniformly and thoroughly bleaching textile material having contaminate in the fibers comprising:1. IMPREGNATING THE CONTAMINATED TEXTILE MATERIAL WITH A SOLUTION OF A SURFACE-ACTIVE AGENT IN A HYDROCARBON OR HALOGENATED HYDROCARBON SOLVENT AND STEAMING THE IMPREGNATED TEXTILE MATERIAL TO REMOVE SOLVENT, WHEREBY SUBSTANTIALLY ALL OF THE CONTAMINATION IN THE FIBERS AND THE SURFACE-ACTIVE AGENT REMAIN IN THE TEXTILE MATERIAL;2. IMPREGNATING THE TEXTILE MATERIAL WITH THE CONTAMINATION AND SURFACE-ACTIVE AGENT WITH AN AQUEOUS BLEACHING SOLUTION CONTAINING, AS A BLEACHING AGENT, HYDROGEN PEROXIDE;3. STEAMING THE TEXTILE MATERIAL; AND4. WASHING THE TEXTILE MATERIAL WITH AN AQUEOUS MEDIUM.
    Type: Grant
    Filed: September 20, 1972
    Date of Patent: May 18, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: John Massey, Martin Alan Shepley, Roger N. Suiter, John M. Murphy
  • Patent number: 3955920
    Abstract: Process for washing textiles in which the washing treatment is carried out in the presence of a cation exchanger containing carboxyl groups in the form of alkali salts and capable of removing calcium and magnesium ions from the washing liquor, and a washing agent for use in said process.
    Type: Grant
    Filed: March 30, 1973
    Date of Patent: May 11, 1976
    Assignee: Henkel & Cie G.m.b.H.
    Inventors: Carl Heinrich Krauch, Axel Sanner, Guenter Jakobi, Edmund Schmadel
  • Patent number: 3956162
    Abstract: A cleaning composition in the form of a thixotropic paste which consists essentially of finely divided insoluble particulate matter, water, a petroleum distillate boiling from 150.degree. to 250.degree.C., a hydrocarbon or halogenated hydrocarbon liquid boiling from about 35.degree. to 75.degree.C., and an emulsifying surfactant.
    Type: Grant
    Filed: June 15, 1973
    Date of Patent: May 11, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William Jacob Lautenberger
  • Patent number: 3954647
    Abstract: Improved drycleaning results (when compared on the International Fabricare Institute rating scale of cleaning/greying ratios) are obtained by the addition of up to one ounce per gallon of drycleaning solvent of a 1-hydroxyethyl-2-fatty acid imidazoline and "free" water (water added after an emulsion of water and detergent is formed in the drycleaning bath).
    Type: Grant
    Filed: May 23, 1974
    Date of Patent: May 4, 1976
    Assignee: Anscott Chemical Industries, Inc.
    Inventors: Clifford A. Neros, Robert A. Ward
  • Patent number: 3951597
    Abstract: A method of dry cleaning fabrics, for instance, draperies or clothing, in situ, by forcefully infusing the fabric in the open atmosphere with special fast-acting, versatile dry cleaning solvent so as to dissolve and suspend various stains and soils in the fabric, even though firmly set due to age, and promptly drawing ambient air and droplets of soil-laden solvent by suction into a closed waste and suction chamber where the soil is deposited in the form of a sludge, while the carrier air and solvent is discharged to the atmosphere. A special, highly effective, fast-acting, nonflammable and nontoxic solvent is provided.
    Type: Grant
    Filed: August 31, 1973
    Date of Patent: April 20, 1976
    Assignee: Steamatic, Inc.
    Inventor: Scott W. Mooring
  • Patent number: 3933425
    Abstract: A method of chemically cleaning textiles in organic solvents with the use of cleaning intensifiers and small quantities of water, comprises bringing the solvents during the cleaning operation into contact with inorganic or organic adsorption materials which are provided with an insolubly fixed impregnation of polycondensation products containing polyalkylene glycol units.
    Type: Grant
    Filed: June 29, 1973
    Date of Patent: January 20, 1976
    Assignee: Henkel & Cie GmbH
    Inventors: Werner Grunewalder, Herbert Frotscher