For Bare Metal Surface (e.g., Degreasing Composition, Etc.) Patents (Class 510/245)
  • Patent number: 5672577
    Abstract: A stripping and cleaning composition for removing resists and etching residue from substrates containing hydroxylamine and at least one alkanolamine is described. Further, a cleaning composition for removing etching residue from semiconductor substrates containing hydroxylamine, at least one alkanolamine, at least one chelating agent, and water is described. The preferred chelating agent is 1,2-dihydroxybenzene or a derivative thereof. The chelating agent provides added stability and effectiveness to the cleaning composition.
    Type: Grant
    Filed: September 6, 1995
    Date of Patent: September 30, 1997
    Assignee: EKC Technology, Inc.
    Inventor: Wai Mun Lee
  • Patent number: 5672579
    Abstract: A cleaning solution consisting essentially of dimethyl ester, water and one or more organic solvents completely miscible at 23.degree. C. with dimethyl ester and water, said water present at at least ten weight percent based on the weight of solution components.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: September 30, 1997
    Assignee: Monsanto Company
    Inventors: Iris Margarita Diaz, Joel Jeffry Gummeson, Mark Weir Heininger
  • Patent number: 5670469
    Abstract: Improved compositions containing a visible coloring agent, such as a pigment or dye, together with a polymer or hydroxylated aliphate alcohol, and an active ingredient defined as a surfactant, a therapeutic agent or biocide, are disclosed. The detectable agent is readily visible under normal white light, and provides a technique for monitoring disturbed and undisturbed areas on a surface. Such is useful in the described methods for cleaning and/or decontaminating a surface, such as in the decontamination of equipment and clothing used during hazardous spill response. The compositions are adherent to a variety of different materials, including Teflon.RTM.. This makes the preparations particularly useful in the cleaning and decontamination of non-flat and curved surfaces, such as on protective garments.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: September 23, 1997
    Assignee: Texas Research Institute
    Inventors: Michael L. Dingus, Walter P. Zoch, Thomas R. Mayfield, Alan Bray, Rock A. Rushing
  • Patent number: 5663132
    Abstract: The present invention discloses an alkaline cleaning composition for cleaning heavily soiled surfaces such as food fryers, baking pans, high temperature pasteurizers, beer kettles and similar equipment that normally requires caustic soda based cleaners to clean. The present invention is also useful in cleaning ceramics such as restaurant grade ceramic china plates and platters. The present invention is particularly useful in cleaning brass and aluminum parts and equipment without causing corrosion damage. Further, since the cleaning composition of the present invention is not based on caustic soda, the composition is not considered hazardous. Further, the cleaning composition of the present invention dissolves readily in water, providing a solution that can be used in mechanical sprayers, soak-tanks and clean-in-place equipment. Also the cleaning composition may be effectively used at lower temperatures than caustic cleaning agents.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: September 2, 1997
    Assignee: Charvid Limited Liability Company
    Inventor: Charles Bullick Talley
  • Patent number: 5661121
    Abstract: An ethoxylate and a process of cleaning a hard surface with a low foaming detergent includes providing a low foaming detergent composed of the ethoxylate having a general formula which is selected from the group consisting of formula (I):C.sub.5 H.sub.11 CH(C.sub.3 H.sub.7)CH.sub.2 O(C.sub.2 H.sub.4 O).sub.n Hand formula (II):C.sub.5 H.sub.11 CH(C.sub.3 H.sub.7)CH.sub.2 O(C.sub.2 H.sub.4 O).sub.p (B).sub.r H,wherein n is 2-16, p is 1-10, r is 1-6, and B is an alkyleneoxy group having 3-4 carbon atoms; and cleaning the hard surface with the low foaming detergent.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: August 26, 1997
    Assignee: Berol Nobel AB
    Inventors: Lennart Dahlgren, Karin Bergstrom
  • Patent number: 5658869
    Abstract: A novel composition, a kit for providing that composition, and method of treatment is disclosed. The composition comprises aqueous hydroxyacid, hydroxy ether, surfactant, and alkali hydroxide. In a preferred aspect, the composition comprises aqueous hydroxyacetic acid, dipropylene glycol-methyl ether, a surfactant blend of 9M tridecyl alcohol and poly`oxy-1,2-ethanediyl`, alpha-`nonylphenyl`-omega-hydroxy-surfactant, and aqueous sodium hydroxide.
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: August 19, 1997
    Inventor: Barrie Singer
  • Patent number: 5650385
    Abstract: A metal cleaning composition useful in aqueous solution comprises an alkalinity providing agent and a combination of surfactants comprising an ethoxylated thiol surfactant and a nitrogen-containing surfactant which reduces the odor of the thiol-containing surfactant. The aqueous cleaning solutions of this invention are particularly useful in metal parts washers typically placed in garages, service stations and the like in which the cleaning solution can be filtered and reused in the parts washer.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: July 22, 1997
    Assignee: Church & Dwight Co., Inc.
    Inventors: Steven Dunn, Anthony Winston
  • Patent number: 5643860
    Abstract: The disclosure relates to a stable multi-purpose cleaning composition for cleaning the pipes and coils of domestic and commercial refrigeration systems. The cleaning composition comprises a single phase solution having as a major constituent one or more compounds of the glycol-ether group, and a minor portion of the total volume of the cleaning composition being at least one of the compounds from one of the alcohol and ketone chemical groups. The cleaning composition of the disclosure has a phased (timed) evaporation rate, leaves no residue, is non-flammable, is biodegradable, can be vented to the atmosphere, and does not contaminate the lubricating oil of refrigeration systems.
    Type: Grant
    Filed: February 8, 1996
    Date of Patent: July 1, 1997
    Assignee: Comstar International, Inc.
    Inventor: Steven P. Mella
  • Patent number: 5644041
    Abstract: The present invention generally relates to an alkyl glycoside of the formula (I): RCH.sub.2 O(G).sub.x H, wherein R is an alkyl group having a total of 8-12 carbon atoms and containing 2-4 groups of the formula --CH(CH.sub.3)-- in its carbon chain; G is a monosaccharide residue; and x is 1-4. The invention also relates to the use of the alkyl glycoside as a surfactant in the cleaning of hard surfaces. A composition containing an alkyl glycoside of formula (I), a complexing agent and a solubilizer is also disclosed.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: July 1, 1997
    Assignee: Akzo Nobel nv
    Inventor: Ingegard Johansson
  • Patent number: 5634979
    Abstract: The invention is a cleaning solution for degreasing metal articles which contains at least one chlorine-free nonionic surfactant with an HLB in the range of 6.5 to 9.5; a second chlorine-free nonionic surfactant with an HLB in the range of above 9.5 to about 14; a chlorinated nonionic surfactant, and an alkalinizing agent and optionally also one or more of anionic or amphoteric surfactant; hydrotroping agents; solubilizers; organic builders, and corrosion inhibitors. The preferred composition of the invention can replace a vapor degreasing process for cleaning oil, grease, and waxy-type contaminants from metal articles to the level of cleanliness required in the aerospace industry.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: June 3, 1997
    Assignee: Henkel Corporation
    Inventors: Lawrence R. Carlson, Philip M. Johnson, Dennis A. Kent
  • Patent number: 5635465
    Abstract: An alkaline degreasing aqueous solution containing 0.01 to 10 g/l of a nonionic surface-active agent, and an organic substance exhibiting water solubility or water dispersibility at a pH value of at least 8, having a phenolic hydroxyl group with a molecular weight of at least 500, at a weight ratio of 0.1 to 2:1=(organic substance having a phenolic hydroxyl group):(nonionic surface-active agent). The alkaline degreasing aqueous solution has a pH value of at least 8.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: June 3, 1997
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Tamotsu Sobata, Naohiko Sumie
  • Patent number: 5629376
    Abstract: Novel polyacrylic acid resins are prepared by polymerizing a monomer selected from the group consisting of H.sub.2 C.dbd.CHCO.sub.2 X, H.sub.2 C.dbd.CR.sup.1 CO.sub.2 X, HR.sup.2 C.dbd.CHCO.sub.2 X, HR.sup.2 C.dbd.CR.sup.1 CO.sub.2 X, HR.sup.2 C.dbd.CHCOX, H.sub.2 C.dbd.CHCOX, H.sub.2 C.dbd.CR.sup.1 COX, HR.sup.2 C.dbd.CR.sup.1 COX, H.sub.2 C.dbd.CHCSO.sub.v X, HR.sup.2 C.dbd.CHCSO.sub.v X, HR.sup.2 C.dbd.CR.sup.1 CSO.sub.v X, H.sub.2 C.dbd.CR.sup.1 CSO.sub.v X, H.sub.2 C.dbd.CHCON(R.sup.3).sub.2, HR.sup.2 C.dbd.CHCON(R.sup.3).sub.2, H.sub.2 C.dbd.CR.sup.1 CON(R.sup.3).sub.2, OR HR.sup.2 C.dbd.CR.sup.1 CON(R.sup.3).sub.2, or a combination thereof, in the presence of at least 10% by weight of reaction components of an aromatic sulfonic acid or its salt, wherein:R.sup.1 and R.sup.2 are independently a substituted or unsubstituted alkyl, alkenyl, aromatic, aralkyl or alkaryl moiety of C.sub.1 to C.sub.20 ;R.sup.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: May 13, 1997
    Assignee: Peach State Labs, Inc.
    Inventors: R. Richard Sargent, Michael S. Williams, Thomas H. Moss, III, Jeffrey R. Alender
  • Patent number: 5612303
    Abstract: A solvent composition containing at least one of an alkyl .alpha.-alkoxyisobutyrate, an alkyl .beta.-alkoxyisobutyrate, and an alkyl .alpha.-hydroxyisobutyrate as an active component is disclosed. The solvent composition is of low toxicity and harmless to humans, has an extremely high dissolving power for high polymers, fats and oils, fluxes, liquid crystals, etc., produces no environment destructive substance, gives off no offensive odor, and has a relatively high boiling point indicative of safety and ease in handling.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: March 18, 1997
    Assignee: Nitto Chemical Industry Co., Ltd.
    Inventors: Yasuyuki Takayanagi, Satoshi Endou, Naoki Sugama
  • Patent number: 5610132
    Abstract: A cleaning agent comprising a mixture of a propylene glycol alkyl ether compatible with water any ratio, a propylene glycol alkyl ether compatible with water only at ratios of 50% by volume or less, and water, for example, the mixture having such a composition that each of 15% by volume or more of dipropylene glycol monomethyl ether, 10% by volume or more of dipropylene glycol monopropyl ether, and 15% by volume or more of water is uniformly dissolved in the other two components. This cleaning agent has high detergency on oily matter, has a characteristic that it is easy to separate the oily matter because the oily matter is not dissolved in the cleaning agent, and is low toxic.
    Type: Grant
    Filed: June 22, 1995
    Date of Patent: March 11, 1997
    Assignee: Tokuyama Corporation
    Inventors: Kayo Momoda, Syuji Baba
  • Patent number: 5607911
    Abstract: A biodegradable, acidic aqueous composition, with an anionic surfactant for the removal of rust, inorganic and organic deposits from a variety of surfaces. Said composition comprising Hydrochloric Acid, Phosphoric Acid, Tetrasodium EDTA, Anionic Surfactant, Perfume Oil, Dye and Water.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: March 4, 1997
    Inventors: Scott Levin, Eric Levin, Joseph Levin
  • Patent number: 5604196
    Abstract: Disclosed are three organic solvent cleaning formulations. In one embodiment, the formulation is methyl or ethyl lactate and propylene glycol methyl ether. In another embodiment, the formulation is methyl or ethyl lactate and propylene glycol propyl ether. In a third embodiment, the formulation is ethyl lactate and isoparaffins of isoundecane and isododecane with propylene glycol propyl ether added as a stabilizing agent.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: February 18, 1997
    Assignee: Lockheed Corporation
    Inventors: Henry J. Weltman, Tony L. Phillips
  • Patent number: 5599402
    Abstract: The method for cleaning of heat exchangers after passage of fluid, pulpy material through the heat exchangers is characterized by the fact that the heat exchangers are exposed to a cip (cleaning in place) treatment with a solution of an enzyme preparation, which contains pectolytic, cellulolytic and hemicellulolytic activities. This method for cleaning of heat exchangers is less time and energy consuming and more environmental-friendly than the hitherto used methods of this kind.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: February 4, 1997
    Assignee: Novo Nordisk A/S
    Inventors: Folmer Greve, Christian Stutz
  • Patent number: 5597792
    Abstract: Superior high water containing oil continuous microemulsions and emulsions for cleaning contain defined amounts of water, one or more ionic surfactants, and one or more organic solvents so that the compositions have a low conductivity and low viscosity.
    Type: Grant
    Filed: August 10, 1994
    Date of Patent: January 28, 1997
    Assignee: The Dow Chemical Company
    Inventors: John Klier, Gary M. Strandburg, Christopher J. Tucker
  • Patent number: 5593504
    Abstract: Printing applicators such as metal stencils and screens used to apply solder paste to printed circuit boards are cleaned to remove accumulated solder paste therefrom by an aqueous alkaline salt cleaner. The aqueous cleaner of the present invention comprises alkaline salts such as alkali metal carbonates, a surfactant formulation which contains at least one nonionic surfactant, an alkali metal silicate corrosion inhibitor and stabilizers to maintain the components in aqueous solution. The cleaner of the present invention contains no VOCs and is an effective and safe replacement for alcohol solvents previously used to clean solder paste from screens and stencils.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: January 14, 1997
    Assignee: Church & Dwight Co., Inc.
    Inventors: Francis R. Cala, Richard A. Reynolds, Eric E. Eichhorn
  • Patent number: 5582650
    Abstract: A process using primarily aqueous-based surfactants for cleaning machinery, tools, containers and the like to remove polyester resin residue. This process involves four stages, each having one or more steps. The first stage is a pre-wash or preliminary cleaning stage which is followed by an ultra-sonic wash stage. The third stage is a rinse stage and the fourth and last stage is for drying the parts cleaned during the previous three stages of the process. Additionally, a fifth evaporation/drying stage is periodically carried out to remove polyester resin residues from the process as solid waste.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: December 10, 1996
    Assignee: International Paper Company
    Inventor: Edward L. Simons
  • Patent number: 5575863
    Abstract: A process for chemical cleaning of metal components having an iron oxide deposit upon a layer of compounds having a high silica content. The process includes the step of preparing an aqueous mixture including an agent for complexing Si(OH).sub.4 and at least one compound for dissolving the high silica content layer. The dissolving compound is selected from the group consisting of insertion compounds for inserting OH or F ions in the Si(OH).sub.4 and OH-containing organic compounds. The insertion compounds including electrophilic groups and are selected from the group consisting of conjugated unsaturated systems and unsaturated N-oxide compounds. The OH-containing organic compounds are selected from the group consisting of organic compounds having at least one alcohol function, aromatic amines, soluble salts of tertiary amines, and aromatic amines causing condensation of OH radicals onto silica.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: November 19, 1996
    Assignee: Framatome
    Inventors: B eatrice Sala, Angel Gelpi
  • Patent number: 5573702
    Abstract: An improvement is described in microemulsion compositions which contain an anionic detergent, a nonionic surfactant, a grease release agent, a hydrocarbon ingredient, and water which comprises the use of a water-insoluble odoriferous perfume as the essential hydrocarbon ingredient in a proportion sufficient to form either a dilute o/w microemulsion composition containing, by weight, 1% to 20% of an anionic detergent, 6 to 50% of a cosurfactant, 0.1% to 10% of a grease release agent, 0.4% to 10% of perfume and the balance being water as well as all purpose hard surface cleaning composition or light duty liquid detergent compositions which contain a grease release agent.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: November 12, 1996
    Assignee: Colgate-Palmolive Co.
    Inventors: Genevieve Bonnechere, Georges Yianakopoulos, Marianne Mahieu, Anne-Marie Misselyn, Rita Erilli
  • Patent number: 5574002
    Abstract: A cleaning agent composition is disclosed which is excellent in removing ability of the soldering flux, wax and machine oil, easy in waste water disposal, and free from the global environmental concern, allowing safe operation. The composition comprises: A) at least one member selected from the group consisting of propylene glycol monoalkyl ether having a C.sub.4-6 alkyl group and dipropylene glycol monoalkyl ether having a C.sub.3-6 alkyl group, B) at least one member selected from the group consisting of methanol, ethanol, 1-propanol and 2-propanol, and C) water.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: November 12, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tohru Shiino, Kenichi Nobuta, Yoshikazu Yamagata
  • Patent number: 5567247
    Abstract: A concentrated cleaning composition for cleaning outdoor painted/stained surfaces. The concentrated cleaning solution includes an aqueous chlorinated bleach solution, a surfactant, a phosphate and a silicate. The concentrated cleaning solution is diluted with water to form a diluted composition which is applied to the surfaces to be cleaned to effect loosening of soil. Thereafter, the loosened soil is removed by the mechanical action of a water spray.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: October 22, 1996
    Assignee: Armor All Products Corporation
    Inventors: Charles Hawes, Mark Thompson
  • Patent number: 5567348
    Abstract: A detergent composition for precision parts or jigs includes (a) a hydrocarbon having a 10-18 carbon atoms,, (b) polyalkylene glycol C.sub.1 -C.sub.3 alkyl ether, and (c) a polyalkylene glycol C.sub.4 -C.sub.8 alkyl ether, wherein a weight ratio of component (a) to the sum of components (b) and (c), (a)/[(b)+(c)], is from 5/95 to 95/5, and a weight ratio of component (b) to component (c), (b)/(c), is from 5/95 to 95/5. The composition is excellent in removing smears such as fats and/or oils, machine oils, cutting oils, greases, liquid crystals, and/or rosin fluxes which have adhered to surfaces of precision parts or jigs. The present composition also exhibits excellent rinsability and high safety and is free of any fear of environmental pollution.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: October 22, 1996
    Assignee: Kao Corporation
    Inventors: Masanori Nozawa, Eiji Kashihara
  • Patent number: 5556833
    Abstract: An aqueous cleaning composition is disclosed that is useful for cleaning wheel soils from surfaces of painted steel, painted aluminum, chrome, stainless steel, clear coated aluminum and plastic. The cleaning composition effectively removes organic and inorganic soils from these surfaces without pitting, etching or hazing. The cleaning composition is effective without scrubbing. The cleaning composition comprises at least one acid fluoride salt and at least one organic soil removing agent selected from the group consisting of detergents and organic solvents. The pH of the cleaning composition is from about 3.5 to about 6.0.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: September 17, 1996
    Assignee: Armor All Products Corporation
    Inventor: Michael Howe
  • Patent number: 5554312
    Abstract: A non-aqueous photoresist stripping composition for effectively preventing the redeposition of alkali metal ions, particularly sodium and potassium ions, on a substrate during the stripping operation is disclosed. The stripping composition comprises:(a) an organic polar solvent;(b) an organic aliphatic or aromatic amine, or an organic amino alcohol; and(c) either polyethylene glycol or polypropylene glycol in an amount to provide a caging effect. The composition also preferably includes a biodegradable organic solvent.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: September 10, 1996
    Assignee: Ashland
    Inventor: Irl E. Ward
  • Patent number: 5542983
    Abstract: Disclosed is a method and system for the efficient recycling of components involved in removing water insoluble contaminants from the surface of articles. A physically emulsified terpene-containing composition is applied to the surface of articles to effectively remove water insoluble contaminants. Following application, the physically emulsified composition quickly separates, releasing the contaminants and terpene from the water. The water, terpene and contaminants are separated for reuse in accordance with the present process. The physically emulsified composition includes between about 2 weight percent and about 40 weight percent of a terpene in water.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: August 6, 1996
    Assignee: Biochem Systems
    Inventors: C. Richard Hamilton, Ross M. Gustafson
  • Patent number: 5534177
    Abstract: The present invention is directed to compositions useful for removing products of metal corrosion from corroded metals which consists essentially of an aqueous liquid solution of malonic acid, a surfactant and an organic solvent selected from the group consisting of formamide, dimethylformamide, and dimethylsulfoxide.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: July 9, 1996
    Inventor: Kenneth G. Mayhan
  • Patent number: 5534181
    Abstract: The invention pertains to non-corrosive aqueous hard surface cleaning compositions having improved cleaning performance, said cleaning compositions comprising from about 0.4% to about 5% of an alkali metal salt; from about 0.3% to about 4% of a nonionic fatty acid amide; from about 0.3% to about 4% of an iso-fatty acid; from about 2% to about 7% of a builder; from about 1% to about 15% of a glycol ether; from about 1% to about 15% of a nonionic surfactant; and from about 50% to about 95% water. The invention may have additional ingredients, including colorants and fragrants, which do not obviate the cleaning performance of the invention.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: July 9, 1996
    Assignee: Castrol North America Automotive Inc.
    Inventors: Herbert W. Henkel, Elisabeth Kaplan, Philip G. Hall