Carboxylic Organic Compounds Containing Patents (Class 252/76)
  • Patent number: 5702631
    Abstract: The present invention provides aqueous concentrated corrosion inhibition formulations suitable for addition to depleted antifreeze/coolant compositions or corrosive water that use a mixture of polymeric polycarboxylates, azoles, nitrate salts, phosphates, stabilized silicates and transition metal compounds which reduces the corrosion rate and is effective at relatively low concentrations. The formulations are particularly suitable for automotive applications.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 30, 1997
    Assignee: Ashland Inc.
    Inventors: John J. Conville, Robert Chwalik, Shrikant V. Desai, David E. Turcotte, James T. Lyon
  • Patent number: 5695678
    Abstract: An electrorheological fluid which possesses high electrorheological effects, has superior storage stability and longevity, does not damage instrumentation, is unaffected by ambient temperature or humidity, has stable current values, and low power consumption, is disclosed. In the electrorheological fluid, inorganic/organic composite particles comprising a core comprising inorganic polymeric compound, and a shell comprising an inorganic material particle possessing electrorheological properties, are dispersed in an electrically insulating medium. The surfaces of these inorganic/organic composite particles may be polished, and furthermore, the inorganic/organic composite particles are preferably produced by means of a method in which the core and the shell are formed simultaneously.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: December 9, 1997
    Assignee: Fujikura Kasei Co., Ltd.
    Inventors: Kazuya Edamura, Yasufumi Otsubo, Masataka Mizoguchi
  • Patent number: 5549838
    Abstract: A hydraulic working oil composition for buffers which comprises:a lubricating oil as a base oil,[I] at least one phosphorus-containing compound selected from the group consisting of a phosphoric acid having a specific structure and a phosphorous acid ester having a specific structure, and[II] at least one nitrogen-containing compound selected from the group consisting of an alkyleneoxide adduct of an aliphatic monoamine having a specific structure, an aliphatic polyamine having a specific structure and a salt of the above aliphatic polyamine having a specific structure, and[III] an aliphatic monoamine having a specific structure, the components [I] to [III] being essential components added to said base oil in a predetermined ratio; and a process for lubricating buffers with said hydraulic working oil composition.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: August 27, 1996
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Toru Miyagawa, Mitsuo Okada, Tomomasa Osumi
  • Patent number: 5496482
    Abstract: To prepare a corrosion-inhibiting liquid de-icing agent based on alkali metal acetates, 30 to 50 percent strength by weight alkali metal hydroxide solution is introduced into a reaction container provided with a cooling device and a mixing device, and 85 to 100% strength acetic acid is metered into the reaction container until the ratio by weight of acetic acid to alkali metal hydroxide solution therein (0.30 to 0.45):1. A portion of this solution is transferred from the reaction container to a stirred dissolving tank and 0.03 to 1% by weight, relative to the batch, of benzotriazole and/or tolyltriazole and/or imidazole is dissolved therein. The resulting solution containing azole is introduced into the reaction container along with 0.01 to 0.2% by weight of phosphoric acid, relative to the batch. Acetic acid continues to be metered into the reaction container until the density of the solution in the reaction container is 1.07 to 1.39 g/cm.sup.3 at 20.degree. C.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: March 5, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Bettermann, Gu/ nther Schimmel, Johannes Himmrich
  • Patent number: 5489391
    Abstract: A heat exchange inhibitor composition, characterized in that phosphates, amine salts, silicates, borates or nitrites are not necessary, and further characterized in that p-tert butyl benzoic acid and/or an alkali salt or salts thereof and a triazole are contained therein, which provides improved inhibitive abilities against metal corrosion, glycol oxidation and plugging of the circulation passages of a heat exchange system and further provides improved stability in hard water without forming chemical depositions and does not produce nitrosamines or form gel with other salts in the heat exchange fluid.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: February 6, 1996
    Assignee: C C I Co. Ltd.
    Inventors: Nobuyuki Nawa, Hideki Goto
  • Patent number: 5482639
    Abstract: In an improved ice melter comprising an alpha-methyl glucoside and method of making same, an ice melter, as disclosed in U.S. Pat. No. 4,960,531 is further improved in respect to providing improved melting capabilities by providing a substantially uniform coating of alpha methyl glucoside-urea mixture the potassium chloride substrate of a potassium chloride and sodium chloride salt mixture or providing a substantially uniform coating of alpha methyl glucoside-urea mixture to both potassium and sodium chloride salt mixture. The improved invention also includes the method of making the composition which includes the steps for example, of(1) heating a solution of alpha-methyl glucoside;(2) adding urea to the heated alpha-methyl glucoside;(3) heating methyl glucoside and urea mixture;(4) applying the heated alpha methyl-glucoside and urea mixture to potassium chloride; and(5) adding sodium chloride to the potassium chloride.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: January 9, 1996
    Assignee: Vigoro Industries, Inc.
    Inventors: Michael J. Archer, Michael S. Adams, Jeffrey A. Tauri
  • Patent number: 5470498
    Abstract: Electrorheological fluids which exhibit good high temperature performance are made using as the disperse phase a salt of a polymer of an alkenyl substituted aromatic comonomer such as styrene and a maleic acid comonomer or derivative thereof.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: November 28, 1995
    Assignee: The Lubrizol Corporation
    Inventors: Joseph W. Pialet, Kasturi Lal, Charles P. Bryant
  • Patent number: 5464569
    Abstract: Oxidation inhibited fluid compositions are prepared by mixing an aromatic ether represented by the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 independently are phenyl, biphenyl, and terphenyl and n is an integer of from zero (0) to 5, and an alkali metal precursor compound convertible under alkali metal precursor compound conversion conditions into an alkali metal salt of oxalic acid, followed by heating the aromatic ether/alkali metal precursor compound mixture at an elevated temperature in the presence of molecular oxygen or a molecular oxygen-containing gas and for a time effective to convert the alkali metal precursor compound into the corresponding alkali metal salt of oxalic acid and form a colloidal dispersion of the aromatic ether and an oxidation inhibiting amount of the alkali metal salt of oxalic acid. The colloidal dispersion is separated from noncolloidally dispersed solid material to thereby recover the oxidation inhibited fluid composition.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: November 7, 1995
    Assignee: Monsanto Company
    Inventor: John S. McConaghy, Jr.
  • Patent number: 5454967
    Abstract: Phosphate-containing, glycol-based coolant mixtures which are stable in hard water and are free of nitrites, silicates, amines and borates containa) 0.5-3% by weight of ammonium and/or alkali metal phosphateb) 2-5.5% by weight of ammonium or alkali metal benzoatec) 0.2-1.5% by weight of ammonium or alkali metal molybdated) 0.2-0.8% by weight of ammonium or alkali metal nitratee) 0.05-0.4% by weight of benzotriazolef) 0.05-0.4% by weight of tolyltriazoleg) 0.005-0.35% by weight of a water-soluble magnesium compoundh) 0.02-0.5% by weight of an oligomeric or polymeric carboxylic acid with a molecular weight of 1,000-100,000,i) 0.05-5% by weight of water and the amount of glycol necessary to make up to 100% by weight.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: October 3, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Pfitzner, Juergen Dehler, Ladislaus Meszaros
  • Patent number: 5439614
    Abstract: Fluid compositions useful to serve as oxidation inhibited functional fluids are provided. Such fluid compositions comprise a colloidal dispersion of an aromatic ether represented by the formula ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 independently are phenyl, biphenyl, and terphenyl and n is an integer of from zero (0) to 5, and an oxidation inhibiting amount of an alkali metal salt of oxalic acid.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: August 8, 1995
    Assignee: Monsanto Company
    Inventor: John S. McConaghy, Jr.
  • Patent number: 5435931
    Abstract: An enhanced ER fluid is disclosed. Polypeptides such as proteins are added to ER fluids. The ER response, particularly increased viscosity in response to an electric potential difference applied to the fluid, is enhanced.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: July 25, 1995
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Sangtae Kim, Daniel J. Klingenberg
  • Patent number: 5422026
    Abstract: The invention provides an alkylene glycol, preferably propylene glycol, anti-corrosive antifreeze concentrate composed of the glycol and small but effective amounts of borate, sebacate, molybdate, mercaptobenzothiazole, nitrate, tolyltriazole and silicate. The concentrate is suitably combined with water to form an internal combustion engine coolant which meets all ASTM testing criteria.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: June 6, 1995
    Assignee: Arco Chemical Technology, L.P.
    Inventor: James P. Greaney
  • Patent number: 5387360
    Abstract: An engine antifreeze coolant composition comprising a major amount of glycols as the main constituent which contains at least one conventional corrosion inhibitor except silicates, and about 0.005 to about 0.5% by weight of citric acid and/or salts thereof as an essential constituent. The compositions are pollution-free and nontoxic, and have a good corrosion-preventing effect on metallic materials such as aluminum alloys for use in internal combustion engines.
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: February 7, 1995
    Assignee: Ethylene Chemical Co., Ltd.
    Inventors: Hideharu Uekusa, Kouzou Matsuzaki
  • Patent number: 5380450
    Abstract: The present invention relates to an electrorheological fluid composition comprising a dispersion of a plurality of solid particles in an electrically non-conducting liquid, the improvement comprising using as said solid particles a composition having the general formula:[(M).sup.p (H.sub.2 O).sub.x (OH).sub.y ].sup.q.sub.cd [A].sub.r.sub.d .multidot.B.sub.z .multidot.nH.sub.2 Owherein M is a metal cation or a mixture of metal cations at various ratios; p is the total valence of M and has a value of greater than zero; x is zero or has a value greater than zero, y is zero or has a value greater than zero, with the proviso that only one of x or y can be zero at any given time; q has a value of p minus y with the proviso that q has a value of at least one; c has a value of greater than zero; A is an anion or a mixture of anions at various ratios; r is the total valence of A with the proviso that r has a value of at least one; d has a value of greater than zero with the proviso that (q.times.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: January 10, 1995
    Assignee: Dow Corning Corporation
    Inventors: Lori J. Conway, Donald A. Kadlec, Joan Sudbury-Holtschlag
  • Patent number: 5376293
    Abstract: Improved deicer compositions containing crystalline double salts formed from mixtures of relatively low molecular weight carboxylic acids (for example, mixtures of formic acid and acetic acid) are provided. The deicer compositions are generally prepared by neutralizing an aqueous mixture containing at least two carboxylic acids or salts thereof, adjusting the pH to between about 7 and about 10, and drying the aqueous mixture to obtain a double salt crystalline product. Double salts containing sodium cations and double salts containing sodium cations and at least one cation selected from the group consisting of potassium, calcium, and magnesium provide effective deicing compositions which are environmentally safer than conventional deicing compositions.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: December 27, 1994
    Assignee: State of South Dakota as represented by the Department of Transportation
    Inventor: Daniel P. Johnston
  • Patent number: 5374367
    Abstract: An electro-sensitive composition comprising a fluorine compound having a predetermined/structure, and an electrically insulating medium capable of dissolving this fluorine compound when a voltage is applied thereto, is disclosed. This electro-sensitive composition has a straight chain or cyclic fluorocarbon, and fluorine compound particles possessing dissociable polarity, dispersed in an electrically insulating medium; by means of the application of a voltage to this electro-sensitive composition, the transparency and viscosity thereof can be easily adjusted.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: December 20, 1994
    Assignee: Fujikura Kasei Co., Ltd.
    Inventors: Kazuya Edamura, Yasufumi Otsubo
  • Patent number: 5366651
    Abstract: Antifreeze concentrate is disclosed having water soluble liquid alcohol freezing point depressant and corrosion inhibitor comprising carboxylic acids or their salts and a triazole compound, wherein the concentrate contains: (1) C.sub.5 -C.sub.16 aliphatic monobasic acid or the alkali metal, ammonium or amine salt thereof; (2) hydrocarbyl triazole; and (3) imidazole.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: November 22, 1994
    Assignee: Texaco Services (Europe) Ltd.
    Inventors: Jean-Pierre Maes, Walter A. van Neste
  • Patent number: 5360560
    Abstract: A water-soluble, foam-inhibiting universal lubricant composition based on an aqueous self-emulsifying synthetic oil solution and an anti-foaming agent. The oil is an ethoxylated dimeric fatty acid, and the anti-foaming agent is made up of a Guerbet alcohol and a metal soap.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: November 1, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Karl Schmid, Frank Bongardt, Juergen Roeder, Reinhold Wuest
  • Patent number: 5356542
    Abstract: Flow accelerating with mixtures of organic ammonium salts composed of 20 to 80% of a quaternary ammonium salt of the formula ##STR1## 80 to 20% by weight of an amine salt of the formula ##STR2## where in both formulae R.sup.1 denotes C.sub.12 -C.sub.26 -alkyl, C.sub.12 -C.sub.26 -alkenyl, C.sub.12 -C.sub.26 -fluoroalkyl, C.sub.12 -C.sub.26 -fluoroalkenyl or a group of the formula ##STR3## R.sub.f --(CH.sub.2).sub.y B(CH.sub.2).sub.x --, R.sup.2 and R.sup.3 denote C.sub.1 -C.sub.3 -alkyl, preferably methyl, R.sup.4 denotes C.sub.1 -C.sub.4 -alkyl and, for the case where R.sup.1 =alkyl or alkenyl, also a group of the formula --(C.sub.2 H.sub.4 O).sub.z H,R.sub.f denotes C.sub.8 -C.sub.20 -fluoroalkyl or C.sub.8 -C.sub.20 -fluoroalkenyl,R.sup.
    Type: Grant
    Filed: January 6, 1992
    Date of Patent: October 18, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dieter Ohlendorf, Manfred Hofinger, Detlef Wehle
  • Patent number: 5350533
    Abstract: Liquid deicing and anti-icing compositions are provided by aqueous solutions of (a) alkali metal acetates, e.g., KAc or NaAc, (b) phosphate ion, e.g., K.sub.3 PO.sub.4, and (c) soluble silicate, e.g., K.sub.2 SiO.sub.3 or Na.sub.2 SiO.sub.3. These compositions are environmentally safe and meet FAA standards for metal corrosion resistance. They are effective at very low temperatures, e.g. -40.degree. F., and provide particularly effective deicing compositions when used in combination with granular CMA.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: September 27, 1994
    Assignee: General Atomics International Services Corporation
    Inventors: Gale L. Hubred, Harold E. Todd
  • Patent number: 5336423
    Abstract: Electrorheological fluids which exhibit good high temperature performance are made using as the disperse phase a salt of a polymer of an alkenyl substituted aromatic comonomer such as styrene and a maleic acid comonomer or derivative thereof.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: August 9, 1994
    Assignee: The Lubrizol Corporation
    Inventors: Joseph W. Pialet, Kasturi Lal, Charles P. Bryant
  • Patent number: 5330670
    Abstract: The present invention provides an antifreeze/coolant composition with polymeric polycarboxylates which prevents hard water precipitants and scale formation, is soluble in alcohol and alcohol/water mixtures, is compatible with other commonly used antifreeze/coolant components, does not corrode or damage automotive cooling systems and is effective at relatively low concentrations.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: July 19, 1994
    Assignee: BASF Corporation
    Inventors: David E. Turcotte, John J. Conville, James T. Lyon, Richard J. Holland, Stanley T. Hirozawa
  • Patent number: 5320771
    Abstract: The present invention provides an antifreeze/coolant additive comprising polymeric polycarboxylates which reduces the corrosion rate of heat rejecting aluminum, and is effective at relatively low concentrations.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: June 14, 1994
    Assignee: BASF Corp.
    Inventors: David E. Turcotte, John J. Conville, James T. Lyon, Stanley T. Hirozawa, Shrikant V. DeSai
  • Patent number: 5312553
    Abstract: Mixtures of organic ammonium salts composed of 20 to 80% of a quaternary ammonium salt of the formula ##STR1## and 80 to 20% by weight of an amine salt of the formula ##STR2## where in both formulae R.sup.1 denotes C.sub.12 -C.sub.26 -alkyl, C.sub.12 -C.sub.26 -alkenyl, C.sub.12 -C.sub.26 -fluoroalkyl, C.sub.12 -C.sub.26 -fluoroalkenyl or a group of the formula ##STR3## R.sup.2 and R.sup.3 denote C.sub.1 -C.sub.3 -alkyl, preferably methyl, R.sup.4 denotes C.sub.1 -C.sub.4 -alkyl and, for the case where R.sup.1 =alkyl or alkenyl, also a group of the formula --(C.sub.2 H.sub.4 O).sub.z H,R.sub.f denotes C.sub.8 -C.sub.20 -fluoroalkyl or C.sub.8 -C.sub.20 -fluoroalkenyl,R.sup.5 denotes hydrogen, methyl or ethyl,B denotes oxygen or sulfur,x denotes an integer from 2 to 6,y denotes 0, 1 or 2, andz denotes numbers from 1 to 4, and additionally 30-70 mole %, preferably 40-60 mole %, particularly preferably 50 mol %, of alkali-metal salicylate calculated on the basis of the total amount of .beta.
    Type: Grant
    Filed: August 9, 1989
    Date of Patent: May 17, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dieter Ohlendorf, Manfred Hofinger, Detlef Wehle
  • Patent number: 5306438
    Abstract: An electrorheological material containing a carrier fluid and an ionic dye particle component which is an ionically charged compound based on or derived from a conjugated hydrocarbon compound. A preferred ionically charged compound contains at least one aromatic nucleus that has been sulfonated and/or carboxylated to form a negatively charged system which has, in turn, been offset with a positive ion. The electrorheological material is useful for creating aesthetic visual effects and responds quickly to an electric field.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: April 26, 1994
    Assignee: Lord Corporation
    Inventors: J. David Carlson, Keith D. Weiss, Joseph E. Bares
  • Patent number: 5290469
    Abstract: The present invention provides an antifreeze/coolant composition with polymeric polycarboxylates which reduces the corrosion rate of heat rejecting aluminum, and is effective at relatively low concentrations.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: March 1, 1994
    Assignee: BASF Corporation
    Inventors: David E. Turcotte, John J. Conville, James T. Lyon, Stanley T. Hirozawa, Shrikant V. DeSai
  • Patent number: 5290467
    Abstract: The present invention provides an antifreeze/coolant additive comprising polymeric polycarboxylates which resists cavitation erosion-corrosion of aluminum and aluminum alloys, is effective at relatively low concentrations and at varying pH.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: March 1, 1994
    Assignee: BASF Corporation
    Inventors: David E. Turcotte, James T. Lyon, John J. Conville, Shrikant V. DeSai, Stanley T. Hirozawa
  • Patent number: 5290468
    Abstract: The present invention provides an antifreeze/coolant additive comprising polymeric polycarboxylates which prevents hard water precipitants and scale formation, is soluble in alcohol and alcohol/water mixtures, is compatible with other commonly used antifreeze/coolant components, does not corrode or damage automotive cooling systems and is effective at relatively low concentrations.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: March 1, 1994
    Assignee: BASF Corporation
    Inventors: David E. Turcotte, John J. Conville, James T. Lyon, Richard J. Holland, Stanley T. Hirozawa
  • Patent number: 5288419
    Abstract: The present invention provides an antifreeze/coolant composition with polymeric polycarboxylates which resists cavitation erosion-corrosion of aluminum and aluminum alloys, is effective at relatively low concentrations and at varying pH.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: February 22, 1994
    Assignee: BASF Corporation
    Inventors: David E. Turcotte, James T. Lyon, John J. Conville, Shrikant V. DeSai, Stanley T. Hirozawa
  • Patent number: 5279755
    Abstract: A thickened aqueous abrasive scouring cleanser containing bleach which is capable of stably suspending abrasives, has excellent bleach half-life stability, little or no syneresis and maintains these advantages over extended times and at elevated temperatures and comprises, in aqueous solution:(a) a colloidal aluminum oxide thickener having average particle size of no greater than about one micron;(b) at least one surfactant which can, in association with the aluminum oxide, provide proper rheology and cleaning;(c) an electrolyte/buffer to promote the environment in which the aluminum oxide and surfactant can associate to provide proper rheology;(d) a halogen bleach;(e) a particulate abrasive having average particle size of about 40 to 800 microns to provide scouring action; and(f) a phase stabilizing amount of a multivalent metal salt of a C.sub.16-22 fatty acid.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: January 18, 1994
    Assignee: The Clorox Company
    Inventors: Clement K. Choy, Brian P. Argo
  • Patent number: 5279754
    Abstract: Disclosed are electrorheological fluids including vermiculite treated with an amine salt, methods of making the same, propylene carbonate adsorbed on the solid phase, butyl benzoate added for the liquid phase, and methods of using frequency response of electrorheological fluids to vary apparent viscosity and to compensate for temperature.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: January 18, 1994
    Assignee: General Motors Corporation
    Inventors: Elio Eusebi, Robert T. Foister
  • Patent number: 5269956
    Abstract: Solutions of potassium, aliphatic monocarboxylate, hydrocarbyl dicarboxylate and hydrocarbyl triazole, with one or more silicate, phosphate, borate, or nitrate, have superior compatibility and anticorrosion properties, useful in heat transfer fluids, antifreezes and metal corrosion inhibition.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: December 14, 1993
    Assignee: Texaco Chemical Co.
    Inventors: David L. Miller, John M. Larkin
  • Patent number: 5252240
    Abstract: Disclosed are electrorheological fluids including vermiculite treated with an amine salt, methods of making the same, propylene carbonate adsorbed on the solid phase, butyl benzoate added for the liquid phase, and methods of using frequency response of electrorheological fluids to vary apparent viscosity and to compensate for temperature.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: October 12, 1993
    Assignee: General Motors Corporation
    Inventor: Elio Eusebi
  • Patent number: 5242621
    Abstract: Corrosion inhibitors containing alkanoic, hydrocarbyl dicarboxylic and carbocyclic-substituted, alkanoic acids or salts give high performance, heat transfer fluids and antifreezes, with improved properties including storage stability.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: September 7, 1993
    Assignee: Texaco Chemical Co.
    Inventors: David L. Miller, Brian L. Benac, John F. Knifton
  • Patent number: 5238592
    Abstract: The de-icing agent described comprises an aqueous solution of at least one alkali metal acetate or at least one alkaline earth metal acetate or a mixture of the two and water as the main components, and 0.01 to 1% by weight of at least one water-soluble triazole compound or at least one water-soluble imidazole compound or a mixture of the two and, if appropriate, 0.01 to 0.5% by weight of at least one alkali metal phosphate as inhibitors. The process described for melting snow and ice on traffic surfaces comprises application of an effective amount of the novel de-icing agent to the ice- and/or snow-covered surfaces to be treated.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: August 24, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Achim Stankowiak, Josef Kapfinger, Gerhard Bettermann
  • Patent number: 5118434
    Abstract: Precipitation of salts from glycol-based fluids when mixed with water is prevented by the addition of copolymers or terpolymers of acrylic acid or alkali metal salt thereof and one or more of the monomers selected from the group consisting of 2-acrylamido-2-methylpropyl sulfonic acid or metal salt thereof, 4-styrenesulfonic acid or metal salt thereof, a lower alkyl hydroxy acrylate, and mixtures thereof.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: June 2, 1992
    Assignee: The Dow Chemical Company
    Inventors: Gene R. Meyer, Donald C. Smith
  • Patent number: 5104562
    Abstract: A frost resistant glycol-free coolant composition or process for cooling apparatus is used for cooling, with such composition, which comprises an aqueous solution of a water soluble alkali metal salt, or a mixture of two alkali metal salts. Particularly suitable alkali metal salts are alkali metal acetate and alkali metal formate. Depending on the nature of the particular alkali metal salt or salts, and the extent of frostproofness that is required, the compositon can further contain urea and/or a glycol antifreeze, such as ethylene glycol. Optionally a corrosion inhibitor can also be used.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: April 14, 1992
    Assignee: Eszakmagyarorszagi Vegyimuvek
    Inventors: Peter Kardos, Tibor Kalman, Jozsef Kerii, Eszter N. Kerii
  • Patent number: 5100571
    Abstract: The additive of the invention can be used as an additive to a liquid cooling system or as a metal cleaning compound. The additive removes rust and other oxidized materials from the cooling system without having to be flushed from the system. The additive contains about 25 percent ortho phosphoric acid and about 1.5 percent zinc chloride. The additive also contains small amounts of ammonium bifluoride, octylphenoxypolyethyleneoxyethanol, dimethylpolysiloxane, and silicone emulsion. The carrier for the additive is preferably distilled water.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: March 31, 1992
    Assignee: Royal Harvest, Inc.
    Inventor: Galen W. Hartman
  • Patent number: 5085791
    Abstract: A corrosion-inhibited antifreeze composition is disclosed. Specifically, the antifreeze composition comprises a major portion of a liquid alcohol freezing point depressant and a minor portion of at least one cyclohexane acid employed as a corrosion inhibitor. Cyclohexane carboxylic acid, cyclohexane acetic acid and cyclohexane propionic acid are preferred, with cyclohexane carboxylic acid being most preferred. Other conventional corrosion inhibitors may be employed in conjunction with the cyclohexane acid(s).In another embodiment, the present invention relates to a process for inhibiting the general pitting, crevice and deposit attack corrosion of metals present in the cooling system of an internal combustion engine which comprises intimately contacting the metal surface to be inhibited against corrosion with the antifreeze composition described above. Most preferably, the target substrates are aluminum and high lead solder.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: February 4, 1992
    Assignee: Texaco Chemical Company
    Inventor: Jeffrey M. Burns
  • Patent number: 5085793
    Abstract: A corrosion-inhibited antifreeze composition is disclosed. Specifically, the antifreeze composition comprises a major portion of a liquid alcohol freezing point depressant and a minor portion of at least one hydroxyl-substituted aromatic carboxylic acid having the hydroxyl radical disposed proximate to the carboxylic radical. The above described acid is employed as a corrosion inhibitor. Other conventional corrosion inhibitors may be employed in conjunction with the acids.In another embodiment, the present invention relates to a process for inhibitig the corrosion of metals present in the cooling system of an internal combustion engine which comprises intimately contacting the metal surface to be inhibited against corrosion with the antifreeze composition described above. Most preferably, the target substrate is high lead solder.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: February 4, 1992
    Assignee: Texaco Chemical Company
    Inventors: Jeffrey M. Burns, John R. Sanderson, John M. Larkin, David R. McCoy
  • Patent number: 5080818
    Abstract: An antifreeze composition comprising a glycol and water, containing (A) a phosphoric acid compound, (B) a compound of at least one metal selected from the group consisting of manganese and magnesium, (C) a corrosion-proofing agent, and optionally (D) at least one compound selected from the group consisting of (a) an aromatic polybasic acid or a salt thereof, (b) an aliphatic dicarboxylic acid or a salt thereof, (c) a molybdate, (d) a tungstate, (e) a homopolymer derived from an alkylene glycol monoallyl ether or a maleic type monomer, and (f) a copolymer thereof with another monomer and having a pH value in the range of 6.5 to 9.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: January 14, 1992
    Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.
    Inventors: Hideya Tachiiwa, Tsuneyoshi Fujii, Yoshinori Ichiwara
  • Patent number: 5076951
    Abstract: The present invention provides a polyhydric alcohol antifreeze composition comprising A) as hard water deposition inhibitor, a hydrolyzed copolymer of maleic anhydride with a mono-ethylenically unsaturated monomer, or mixture of monomers, the molar ratio of maleic anhydride to other monomers being from 2.5:1 to 100:1, and the molecular weight of the copolymer being below 1000; and optionally B) as corrosion inhibitor, at least one of B-1) a triazine compound having the formula (I): ##STR1## wherein Z is a C.sub.1 -C.sub.11 alkylene group, X is hydrogen, an alkali metal or mono-, di- or tri-ethanolamine, R.sub.1 and R.sub.2, independently, are hydrogen or methyl and R.sub.3 is a group --NR.sub.4 R.sub.5 in which R.sub.4 is C.sub.1 -C.sub.12 alkyl or --Z--COOX in which Z and X have their previous significance, and R.sub.5 is hydrogen or C.sub.1 -C.sub.12 alkyl; B-2) 2-hydroxyphosphonoacetic acid; B-3) (2-Benzo-thiazolylthio)succinic acid and B-4) (2-benzothiazolylthio)-acetic acid.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: December 31, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Peter Miles, Upendra P. Gandhi
  • Patent number: 5071580
    Abstract: A corrosion inhibitor slurry is disclosed which is suitable for addition to a selected liquid coolant capable of dispersing at least one glycol having from 3 to 5 carbon atoms per molecule. The slurry consists of a mixture of (a) a treatment composition comprising corrosion inhibitor, capable of dispersing in said selected liquid coolant and consisting of solid and, optionally non-solid components; and (b) a liquid vehicle selected from glycols which have 3 to 5 carbon atoms per molecule and disperse in said selected liquid coolant. The treatment composition solids in the slurry are fine particles; the amount of vehicle in the slurry is chosen such that the particles are thoroughly wetted and the slurry both sets and is pumpable; and the amounts of non-solid components of the treatment composition are limited to a total quantity that does not substantially impair the pumping and setting characteristics provided by the particles and liquid vehicle.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: December 10, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: David A. Little
  • Patent number: 5064552
    Abstract: A glycol-based antifreeze mixture which is free of nitrites and phosphates contains an alkali metal salt of a C.sub.4 -C.sub.16 -alkenylsuccinic acid, stabilized silicate and further corrosion-inhibiting additives.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: November 12, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlaender, Juergen Mohr, Gert Liebold, Guenter Frey
  • Patent number: 5064551
    Abstract: This invention relates to deicing compositions which contain alkali metal salts of (a) acetates and/or formates, (b) phosphates and (c) nitrites in aqueous solution and has a pH value in the range from 9.5-11.2. This composition is environment friendly and does not give rise to acute corrosion problems associated with compositions used hitherto.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: November 12, 1991
    Assignee: BP Chemicals Limited
    Inventor: Roy P. Smith
  • Patent number: 5032308
    Abstract: An electrorheological fluid wherein the discrete phase comprises a layered mixed metal hydroxide of the formulae:Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n andMg.sub.x Al.sub.y (OH).sub.zand the continuous phase is a low dielectric fluid. The layered mixed metal hydroxides may be functionalized with an aliphatic carboxylic acid or with the reaction product of a clay and an amine salt to provide a more dispersible particulate phase. The electrorheological fluids have improved thermal stability and provide a strong response to low electric field strengths while requiring a low concentration of layered mixed metal hydroxide component.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: July 16, 1991
    Assignee: The Dow Chemical Company
    Inventors: Thomas M. Knobel, Robert A. Cipriano
  • Patent number: 4960531
    Abstract: This invention relates to a composition for melting ice at low temperatures, particularly for use in melting ice from driveways, sidewalks and the like. The composition includes mixtures of the salts, sodium and potassium chloride, urea, and a chemical enhancer (synergist) or trigger. The enhancer which quickens melt rate and effects lower ice-melting temperatures may be an additional inorganic salt, such as a carbonate or another chloride, or an organic compound with ether or hydroxyl groupings such as saccharides, alcohols, glycols, and glucosides.The invention also includes the method of making the composition which includes the steps for example, of(1) preparing a warm solution of urea(2) spraying the potassium chloride portion of the salt combination with the urea solution,(3) drying the potassium chloride urea composition;(4) mixing said dried composition with the sodium chloride, and(5) adding the trigger.
    Type: Grant
    Filed: May 5, 1989
    Date of Patent: October 2, 1990
    Assignee: Koos, Inc.
    Inventors: Margaret B. Connor, Joseph P. Tratnyek
  • Patent number: 4946616
    Abstract: A coolant composition for use in automotive engines is disclosed which comprises a liquid alcohol freezing depressant and a corrosion inhibitor consisting essentially of decanedioic acid, dodecanedioic acid and sodium tolyltriazole.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: August 7, 1990
    Assignee: The Dow Chemical Company
    Inventors: Daniel J. Falla, Peter H. Berchtold
  • Patent number: 4910246
    Abstract: Useful compositions are prepared by incorporating into organic materials, crystalline lithium aluminates which conform substantially to the empirical formula(LiA.sub.x).sub.y.2Al(OH).sub.3.nH.sub.2 Owhere A represents one or more anions and/or negative-valence radicals,where x represents a quantity of A ions and/or radicals sufficient to substantially satisfy the valence requirements of the Li,where y is a numerical value sufficient to maintain the crystalline structure,and where n represents the number of waters of hydration, if any.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: March 20, 1990
    Assignee: The Dow Chemical Company
    Inventors: John L. Burba, III, William C. Bauman
  • Patent number: RE33124
    Abstract: Substantially oil-free aqueous industrial fluids comprise (A) up to as much as 99.9 percent by weight water, (B) at least one substantially water-insoluble functional additive stably dispersed in the water and (C) at least one substantially water-soluble liquid organic dispersing agent, said dispersing agent being capable of dispersing said functional additive in said fluid and are useful as liquids in a variety of industrial applications, such as hydraulic systems and metal shaping operations. Typically, these compositions also contain at least one water-soluble polymeric thickener and at least one corrosion inhibitor. Methods for preparing these fluids from concentrates are also disclosed.
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: December 5, 1989
    Assignee: Singer and Hersch Industrial Development (PTY) Ltd.
    Inventor: Haimi N. Singer