Abstract: A coolant comprising a nonaqueous base. A phase change material may be dispersed or a highly heat conductive material may be dispersed or dissolved in the nonaqueous base. A nonaqueous coolant for a fuel cell excellent in heat transfer characteristics is provided as a coolant for fuel cell stacks.
Abstract: A reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrate is provided comprised of ethylene glycol, a polyhydric alcohol having a boiling point above about 150° C. and that acts as an alcohol dehydrogenase inhibitor, such as propylene glycol or glycerol, and selected additives. The antifreeze/heat transfer fluid concentrate may be combined with water to form a coolant solution for use in internal combustion engines.
Abstract: An antifreezing urea solution is disclosed which is supplied from a urea solution tank to an adding value to be injected to an SCR catalyst disposed in an exhaust passage of an internal combustion engine. The antifreezing urea solution includes a mixed solution composed of a concentrated urea solution with a urea concentration of 30 wt % or more, and an organic solvent of an alcohol family with 1 to 7 carbon atoms having a hydrophilic group, wherein the urea solution and the organic solvent of the alcohol family are mixed at a mixture ratio of 7:1 respectively (in a volume ratio) or more, providing a freezing point of ?30° C. or less.
Abstract: The present invention relates generally to heat transfer compositions. More particularly, the present invention relates to heat transfer compositions with high electrical resistance for use in power-generating equipment or in engines. Such compositions are particularly useful in fuel cell assemblies.
Type:
Grant
Filed:
February 19, 2003
Date of Patent:
January 27, 2009
Assignee:
Honeywell International Inc.
Inventors:
Carol S. Jeffcoate, Aleksei V. Gershun, Peter M. Woyciesjes, Filipe J. Marinho
Abstract: Heat transfer systems are provided. The heat transfer systems comprise an object in contact with a heat transfer fluid comprising (a) polytrimethylene homo- or copolyether glycol where from about 50 to 100 mole percent of the repeating units are trimethylene ether units, and (b) a blending component selected from the group consisting of ethylene glycol, diethylene glycol, polyalkylene glycol copolymers of ethylene oxide and propylene oxide, vegetable oils, aromatic compounds, mineral oil, silicone fluids, and mixtures thereof. Objects in contact with a heat transfer fluid in the heat transfer systems include automotive radiators, industrial heat exchangers, heat recovery units, refrigeration units, solar panels, cooling towers, transformers, and heating radiators.
Abstract: The invention relates to a heat transport medium which is made up of a liquid base component in the form of water and at least one additive from polyvinyl alcohol (PVA) and a nanofiber material.
Abstract: To provide a working fluid for a heat cycle, which is nonflammable, little influential to the environment and excellent in heat cycle characteristics, and a Rankine cycle system, a heat pump cycle system and a refrigeration cycle system, which have high capacity and efficiency. A working fluid for a heat cycle containing HFE-347, and a Rankine cycle system using the working fluid for a heat cycle of the present invention, a heat pump cycle system using the working fluid for a heat cycle of the present invention and a refrigeration cycle system using the working fluid for a heat cycle of the present invention.
Abstract: An electrical insulating oil composition is prepared from an isomerized base oil. The electrical insulating oil composition in one embodiment exhibits excellent sulphur corrosion protection property with a sulphur level of <5 ppm; excellent gassing tendency of <30 ?L per minute as measured according to ASTM D-2300-1976, and a rotary pressure vessel oxidation stability (RPVOT) value of at least 400 minutes as measured according to ASTM D 2272-02.
Abstract: A reactive-separation process converts glycerin into lower alcohols, having boiling points less than 200° C., at high yields. Conversion of natural glycerin to propylene glycol through an acetol intermediate is achieved at temperatures from 150° to 250° C. at pressures from 1 and 25 bar. The preferred applications of the propylene glycol are as an antifreeze, deicing compound, or anti-icing compound. The preferred catalyst for this process in a copper-chromium.
Type:
Application
Filed:
August 28, 2006
Publication date:
December 25, 2008
Inventors:
Galen J. Suppes, William Rusty Sutterlin
Abstract: A heat transfer fluid comprised of glycerin. A method of using the heat transfer fluid to heat or cool an object. A method of using the heat transfer fluid in a heating or cooling system to heat or cool a building.
Abstract: A coolant composition having anticorrosion properties against both aluminum and magnesium is provided. A coolant composition comprises a melting point depression agent selected from glycols and alcohols as the main component, and it contains a corrosion inhibitor selected from fluorides and a tribasic acid of an organic carboxylic acid or an alkali metal salt thereof.
Type:
Grant
Filed:
May 17, 2005
Date of Patent:
December 9, 2008
Assignees:
Toyota Jidosha Kabushiki Kaisha, Japan Chemical Industries Co.
Abstract: A nontoxic fuel cell engine coolant which has an electrical resistivity of greater than 250 kOhm-cm, a boiling point of greater than 90° C., a freezing point of less than ?40° C., a thermal conductivity of greater than 0.4 W/m-k, a viscosity of less than 1 cPs at 80° C., a viscosity of less than 6 cPs at 0°C., a heat capacity of greater than 3 kJ/kg-K, and which is compatible with current cooling system materials.
Type:
Grant
Filed:
February 13, 2002
Date of Patent:
November 18, 2008
Assignee:
Shell Oil Company
Inventors:
Edward Raynes Eaton, Wyndham Henry Boon, Christopher John Smith
Abstract: Carboxylate salts of amines are used as components of heat exchange fluids. The amines may have a ratio of N to C of 1:0 to 1:12 and the carboxylate anion may be derived from an acid of the formula H(CH2)0-3COOH. A preferred monoamine heat exchange fluid utilizes triethanolamine formate. Lower carboxylate salts of diamines and triamines having the formula R2[N[(CH2)mNR]1-2]R where each R is independently selected from moieties of the formula —CnH2n+1 and moieties of the formula H[O(CH2)1-4]—, each m is independently a number from 1 to 6, and each n is a number from 1 to 4, are disclosed as compounds.
Type:
Grant
Filed:
October 14, 2005
Date of Patent:
November 18, 2008
Assignee:
Weatherford/Lamb, Inc.
Inventors:
Kevin W. Smith, Larry W. Gatlin, John H. Hallman
Abstract: A high thermal conductivity thermal interface material compound includes 53% by weight of polyethylene glycol, 42% by weight of silicon carbide, and 5% by weight of lithium ions. The method of fabricating the thermal interface material includes the steps of: filling the above-described compound in a container and blending them to form aggregative compound by a blender; mixing the compound by a rolling machine to disperse the aggregative compound and filling the compound to another container; blending the compound and breaking the air bubble generated thereof, and pumping the air out of the container by a vacuum pump at the same time, to fabricate the high thermal conductivity thermal interface material compound without air bubbles.
Type:
Grant
Filed:
September 8, 2006
Date of Patent:
November 4, 2008
Assignee:
Cpumate Inc.
Inventors:
Kuo-Len Lin, Tien-Chih Tseng, Ming-Chang Liu, Wen-Jung Liu
Abstract: The invention relates to thermally conductive greases that may contain carrier oil(s), dispersant(s), and thermally conductive particles, wherein the thermally conductive particles are a mixture of at least three distributions of thermally conductive particles, each of the at least three distributions of thermally conductive particles having an average (D50) particle size which differs from the other average particle sizes by at least a factor of 5
Abstract: The present invention relates to a coolant composition for fuel cell coolant, comprised of sulfur containing alcohol or sulfur containing phenol having at least one sulfur atom per molecule, which effectively prevents increase of electric conductivity due to oxidation of its base component for a long time. The coolant composition when diluted with water to a predetermined concentration effectively suppresses increase of electric conductivity of the coolant and maintain fluctuation of electric conductivity within the range from 0 to 10 ?S/cm so that power generation efficiency of the fuel cell may not be lowered.
Type:
Application
Filed:
August 28, 2007
Publication date:
October 16, 2008
Applicant:
SHISHIAI-KABUSHIKIGAISHA
Inventors:
Michihiro Hori, Hiroshi Egawa, Hidemi Kado
Abstract: A subject of the present invention is to provide a one-pot type epoxy resin composition having both high curability and storage stability and a latent hardener for obtaining the same, and to provide anisotropic conductive materials, conductive adhesive materials, insulating adhesive materials, sealing materials, and the like which have high storage stability, solvent resistance and humidity resistance and can provide high connection reliability, adhesive strength and high sealing properties even under curing conditions such as low temperatures or short periods of time. The present invention relates to a latent hardener for epoxy resins in which a hardener (A) for epoxy resins is covered with a film (c1) obtained by reacting an isocyanate component (b1) comprising a low molecular bifunctional aliphatic isocyanate compound in an amount of 1% by mass or more and 95% by mass or less with an active hydrogen compound (b2), and to a one-pot type epoxy resin composition using the same.
Abstract: Heat transfer systems are provided. The heat transfer systems comprise an object in contact with a heat transfer fluid comprising (a) polytrimethylene homo- or copolyether glycol where from about 50 to 100 mole percent of the repeating units are trimethylene ether units, and (b) a blending component selected from the group consisting of ethylene glycol, diethylene glycol, polyalkylene glycol copolymers of ethylene oxide and propylene oxide, vegetable oils, aromatic compounds, mineral oil, silicone fluids, and mixtures thereof. Objects in contact with a heat transfer fluid in the heat transfer systems include automotive radiators, industrial heat exchangers, heat recovery units, refrigeration units, solar panels, cooling towers, transformers, and heating radiators.
Abstract: An antifreeze concentrate for cooling systems in fuel-cell drives which gives ready-to-use aqueous coolant compositions having a conductivity of at most 50 ?S/cm, based on alkylene glycols or derivatives thereof and containing one or more five-membered heterocyclic compounds (azole derivatives) having 2 or 3 hetero atoms from the group consisting of nitrogen and sulfur, which contain no or at most one sulfur atom and which may carry a fused aromatic or saturated six-membered ring.
Type:
Grant
Filed:
June 8, 2006
Date of Patent:
September 2, 2008
Assignee:
BASF Aktiengesellschaft
Inventors:
Bernd Wenderoth, Stefan Dambach, Ladislaus Meszaros, Uwe Fidorra
Abstract: Methods for cooling a fuel cell include providing in a fuel cell coolant system an aqueous fuel cell coolant composition having an initial electrical conductivity of at most 50 ?S/cm. The fuel cell coolant compositions include an alkylene glycol and water solution, and an additive consisting of one or more five membered heterocyclic compounds (azole derivatives) having 2 or 3 heteroatoms selected from the group consisting of nitrogen and sulfur, which contain no or at most one sulfur atom and which may carry a fused aromatic or saturated six-membered ring, and an orthosilicate in an amount to provide a silicon content of from 2 to 2000 ppm by weight.
Type:
Grant
Filed:
October 20, 2005
Date of Patent:
September 2, 2008
Assignee:
BASF Aktiengesellschaft
Inventors:
Bernd Wenderoth, Stefan Dambach, Ladislaus Meszaros, Uwe Fidorra
Abstract: Compositions of 1,1,1,2,2,4,5,5,5-nonafluoro-4(trifluoromethyl)-3 pentanone can be used in heat transfer refrigeration and air conditioning systems. The compositions may be in combination with fluoroethers. The compositions may be azeotropic or near azeotropic.
Abstract: A process for transferring heat from a heat generating source to a heat transfer fluid, comprising contacting the heat generating source with a heat transfer fluid for a time sufficient to effect heat transfer between the source and the fluid, wherein the heat transfer fluid comprises polytrimethylene homo- or copolyether glycol where at least about 50 mole percent of the repeating units are trimethylene ether units. In preferred embodiments the polytrimethylene homo- or copolyether glycol is selected from the group consisting of (i) polytrimethylene ether glycol, (ii) poly(trimethylene-ethylene ether)glycol, and (iii) random polytrimethylene ether ester.
Abstract: A nontoxic fuel cell engine coolant which has an electrical resistivity of greater than 250 kOhm-cm, a boiling point of greater than 90° C., a freezing point of less than ?40° C., a thermal conductivity of greater than 0.4 W/m-k, a viscosity of less than 1 cPs at 80° C., a viscosity of less than 6 cPs at 0° C., a heat capacity of greater than 3 kJ/kg-K, and which is compatible with current cooling system materials.
Type:
Grant
Filed:
November 17, 2005
Date of Patent:
August 12, 2008
Assignee:
Shell Oil Company
Inventors:
Edward Raynes Eaton, Wyndham Henry Boon, Christopher John Smith
Abstract: An improved system for transferring heat, utilizing diols, specifically 1,3-propanediol (PDO). The system reduces the energy consumption, maintenance costs, corrosion, toxicity, and the risk of fire associated with such heat-dependent processes. Unlike traditional hydrocarbon heating fluids, diols do not require draining and replacement if a purifier is installed in the system. Business methods are also disclosed.
Type:
Grant
Filed:
July 6, 2004
Date of Patent:
August 5, 2008
Assignee:
Dupont Tale + Lyle Bio Products Company, LLC
Abstract: The present invention relates to a carboxylic acid based antifreeze coolant formulation for heavy duty applications such as for diesel engines which may be used for inhibition and prevention erosion and corrosion of aluminum and the corrosion of other metals exposed to an aqueous liquid in automotive coolant systems. The formulation further inhibits mineral scale. It may be packaged as an ethylene glycol based additive for use in new engines or in a concentrated inhibition package as an additive as for reinhibition of used coolant. The combination of a mixture of ethylene or propylene glycol, a monobasic carboxylic organic acid, azoles, low levels of molybdates, a nitrite salt and/or nitrate salt and/or siloxane stabilized silicate, and combinations thereof, polyvinylpyrrolidone, provide a synergistic protective effect against the cavitation corrosion of aluminum in aqueous liquids reducing the corrosion rate and is effective at relatively low concentrations and varying pH ranges.
Abstract: The present invention relates to heat-transfer concentrates for solar installations, containing a) from 92 to 99% by weight of at least one polyglycol of the formula R—O—(CH2—CH2—O)n—H, in which n is an integer of from 3 to 500 and R is H, a C1- to C4-alkyl group or an aromatic radical having 6 to 12 carbon atoms, b) from 1 to 8% by weight of at least one corrosion inhibitor, with the proviso that its content of ethylene glycol and 1,2-propylene glycol is less than 0.2% by weight.
Type:
Grant
Filed:
February 2, 2007
Date of Patent:
July 29, 2008
Assignee:
Clariant International Ltd.
Inventors:
Markus Hafner, Achim Stankowiak, Johann Schuster, Stefan Mauerberger
Abstract: A fluid for traction drives for automobiles which comprises (A) a hydrocarbon compound having two bridged rings selected from bicyclo[2.2.1]heptane ring, bicyclo[3.2.1]octane ring, bicyclo[3.3.0]octane ring and bicyclo[2.2.2]octane ring and (B) a hydrocarbon compound having at least one structure selected from quaternary carbon atom and ring structures and having a kinematic viscosity at 40° C. of 10 mm2/s or smaller, and has a viscosity at ?40° C. of 40,000 Pa·s or smaller and a flash point of 140° C. or higher, is provided. This fluid exhibits a great traction coefficient at high temperatures and very small viscosity at low temperatures. A fluid for traction drives which comprises a specific bicyclo[2,2,1]heptane derivative having 14 to 17 carbon atoms and having a viscosity index of 0 or greater is also provided. This fluid exhibits improved viscosity-temperature characteristics, decreased viscosity and improved fluidity at low temperatures.
Type:
Grant
Filed:
August 2, 2002
Date of Patent:
July 22, 2008
Assignee:
Idemitsu Kosan Co., Ltd.
Inventors:
Yukio Yoshida, Toshiyuki Tsubouchi, Motohisa Ido, Hidetoshi Koga
Abstract: A coolant composition for a fuel cell unit, which contains at least one aliphatic alcohol having unsaturated bonds in the molecules having 2 to 20 carbon atoms each. The coolant composition maintains the electrical conductivity of the coolant at 10 ?S/cm or below as well as the fluctuation of the electrical conductivity within the range of 0 to 10 ?S/cm.
Abstract: The invention relates to antifreeze concentrates for cooling systems in fuel cell drives, from which are produced ready-to-use aqueous cooling agent compositions having a maximum conductivity of 50 ?s/cm, based on alkylene glycols or the derivatives thereof, and containing orthosilicic acid esters of formula (I) wherein the variables R1 to R4 are the same or different and represent C1-C20 alkyl substituents, C2-C20 alkenyl substituents, C1-C20 hydroxyalkyl substituents, optionally substituted C6-C12 aryl substituents and/or glycol ether substituents of formula (CH2—CH2—O)n—R5 wherein R5 represents hydrogen or C1-C5 alkyl and n represents a number between 1 and 5
Type:
Grant
Filed:
December 14, 2001
Date of Patent:
July 1, 2008
Assignee:
BASF Aktiengesellschaft
Inventors:
Bernd Wenderoth, Ladislaus Meszaros, Stefan Dambach, Uwe Fidorra, Marco Bergemann
Abstract: The present invention relates to antifreeze/anticorrosion concentrates comprising from 10 to 50% by weight, based on the total amount of the concentrate, of glycerol, to processes for preparing such concentrates from superconcentrates, to aqueous coolant compositions from these concentrates, and to their use, for example in internal combustion engines.
Type:
Application
Filed:
February 23, 2006
Publication date:
June 26, 2008
Applicant:
BASF Akiengesellschaft
Inventors:
Claudius Kormann, Colin Irwin, Matthias Kiefer
Abstract: A heat transfer composition and methods for using same to transfer heat in a transformer. In one embodiment, a heat transfer composition has soy-based oil, an additive comprising a nano-particle size diamond powder characterized by a first mass, and a chemical agent characterized by a second mass, wherein the ratio of the second mass to the first mass is greater than one.
Type:
Grant
Filed:
December 7, 2004
Date of Patent:
June 24, 2008
Assignees:
Vandervilt University, Tenneessee Valley Authority
Abstract: The present invention comprises an improved antifreeze coolant composition with certain additives that serve to increase the thermal stability of the glycol component of a glycol/water coolant composition and to reduce the tendency of the glycol component to degrade under elevated thermal conditions. These additives comprise organic compounds with a carboxylic acid moiety and a hydroxyl moiety, and also tricarballylic acid. Another aspect of this invention concerns a method for improving the stability of the glycol component of a glycol/water coolant composition in engine cooling/heating systems by formulating a glycol/water coolant composition with the thermal stability additive to form an improved coolant composition, and contacting the engine cooling/heating system with the improved coolant composition.
Type:
Grant
Filed:
December 2, 2002
Date of Patent:
June 17, 2008
Assignee:
Texaco Inc.
Inventors:
Regis Joseph Pellet, Paul Otto Fritz, Leonard Sherman Bartley, Jr.
Abstract: An antifreeze concentrate for cooling systems in fuel-cell drives which gives ready-to-use aqueous coolant compositions having a conductivity of at most 50 ?S/cm, based on alkylene glycols or derivatives thereof and containing one or more five-membered heterocyclic compounds (azole derivatives) having 2 or 3 hetero atoms from the group consisting of nitrogen and sulfur, which contain no or at most one sulfur atom and which may carry a fused aromatic or saturated six-membered ring.
Type:
Grant
Filed:
June 6, 2002
Date of Patent:
May 13, 2008
Assignee:
BASF Aktiengesellschaft
Inventors:
Bernd Wenderoth, Stefan Dambach, Ladislaus Meszaros, Uwe Fidorra
Abstract: A high thermal conductivity thermal interface material compound includes 53% by weight of polyethylene glycol, 42% by weight of silicon carbide, and 5% by weight of lithium ions. The method of fabricating the thermal interface material includes the steps of: filling the above-described compound in a container and blending them to form aggregative compound by a blender; mixing the compound by a rolling machine to disperse the aggregative compound and filling the compound to another container; blending the compound and breaking the air bubble generated thereof, and pumping the air out of the container by a vacuum pump at the same time, to fabricate the high thermal conductivity thermal interface material compound without air bubbles.
Type:
Application
Filed:
September 8, 2006
Publication date:
March 13, 2008
Inventors:
Kuo-Len Lin, Tien-Chih Tseng, Ming-Chang Liu, Wen-Jung Liu
Abstract: This invention describes a refrigerating oil composition for natural substance-based refrigerants which comprises (A) a synthetic oil component comprising a polyether compound having a pour point of ?10° C. or lower and (B) a mineral oil component comprising sulfur components, wherein the ratio of amounts by weight of component (A) to component (B) is in the range of 25:75 to 99:1 and the amount of the sulfur components derived from component (B) in the composition is in the range of 5 to 1,000 ppm. The refrigerating oil composition has excellent miscibility with natural substance-based refrigerants and, in particular, with ammonia-based refrigerants, exhibits an improved lubricity and used for industrial refrigerators using natural substance-based refrigerants such as ammonia, propane, butane and carbon dioxide.
Abstract: Heat transfer fluids which can be used over a broad range of temperatures such as from 175° C. to ?145° C. are disclosed. The heat transfer fluids consist essentially of a mixture of at least two structurally non-identical cycloalkane-alkyl or -polyalkyl compounds, or a mixture of at least two structurally non-identical aliphatic hydrocarbons, or a mixture of a cycloalkane-alkyl or -polyalkyl compound and an aliphatic hydrocarbon. The individual components are present at levels such as to confer to the fluid composition a cloud point below ?100° C., a vapor pressure at +175° C. below 1300 kPa, and a viscosity, measured at the cloud point temperature +10° C., below 400 cP.
Type:
Application
Filed:
October 30, 2003
Publication date:
January 17, 2008
Inventors:
David Lee Davidson, Dawn King Davidson, Patrick Pierre Notte, John Joseph Tria
Abstract: Polythiophene may be processed using a method including providing a composition including the polythiophene and a liquid including at least one hydrocarbon having at least 6 carbon atoms; heating the composition to a temperature of at least about 50° C.; and separating solid polythiophene from the heated composition. Alternatively, the method may include providing a composition including polythiophene and an organic liquid; heating the composition to dissolve a portion of the polythiophene in the organic liquid; and separating solid polythiophene from the heated composition.
Type:
Grant
Filed:
November 18, 2005
Date of Patent:
January 1, 2008
Assignee:
Xerox Corporation
Inventors:
Alan Edward John Toth, Tamara Perez-Cruz
Abstract: The present invention discloses an aqueous phenolates-containing liquid formulation having a solidification point of less than or equal to ?10° C. which is characterized by comprising the following components: a) 50-80% by wt. of one or more phenolates; b) 0.1-10% by wt. of at least one crystallization inhibitor; and water and optionally other components forming the balance.
Abstract: The application of carboxylate salts for storing thermal energy is disclosed. The invention is directed to methods for the storage and use of thermal energy comprising contacting mixtures of alkali metal salts or alkali earth metal salts of carboxylic acids, storing the thermal energy in the mixture, containing the mixture in a suitable heat exchange system and using the stored thermal energy in the heat exchange system.
Type:
Grant
Filed:
May 17, 2001
Date of Patent:
December 11, 2007
Assignee:
Texaco Inc.
Inventors:
Jean-Pierre Maes, Serge Lievens, Peter Roose
Abstract: The present invention is an apparatus, method and system to thermally package an item having at least one container substantially filled with an alcohol, wherein said alcohol undergoes a phase change.
Abstract: Heat transfer fluids comprising a polytrimethylene ether glycol or random polytrimethylene ether ester glycol, or mixtures thereof, and processes of using them in order to transfer heat.
Abstract: “Disclosed is a feed water composition for boilers whose main ingredient is a purified ethylene glycol aqueous solution that is a mixture of purified ethylene glycol and pure water in a weight ratio of 70-90 : 10-30 wt %. The feed water composition comprises 92.1 to 98.8 wt % of the purified ethylene glycol aqueous solution, 0.1 to 2.0 wt % of sodium benrzoate, 0.1 to 1.5 wt % of tolyltriazole, 0.1 to 0.7 wt % of triethanol amine, 0.5 to 1.5 wt % of sodium nitrate, 0.3 to 1.2 wt % of sodium molybdate, and 0.1 to 1.0 wt % of potassium hydroxide.
Abstract: The present invention relates to heat-transfer concentrates for solar installations, containing a) from 92 to 99% by weight of at least one polyglycol of the formula R—O—(CH2—CH2—O)n—H, in which n is an integer of from 3 to 500 and R is H, a C1- to C4-alkyl group or an aromatic radical having 6 to 12 carbon atoms, b) from 1 to 8% by weight of at least one corrosion inhibitor, with the proviso that its content of ethylene glycol and 1,2-propylene glycol is less than 0.2% by weight.
Type:
Application
Filed:
February 2, 2007
Publication date:
August 9, 2007
Inventors:
Markus Hafner, Achim Stankowiak, Johann Schuster, Stefan Mauerberger
Abstract: This invention is a composition that includes a transesterified fatty acid ester resulting from the reaction of a fatty acid ester, in the presence of an acid, with a hydroxyl-containing compound. The fatty acid esters of the invention are selected from those with a carbon number of eight to twenty. The hydroxyl-containing compound is an alcohol having a carbon number between one and eighteen. The resulting composition is useful as a lubricant, as a heat transfer agent, as a rheological modifier and as a corrosion/moisture inhibitor, among other uses.
Abstract: An antifreeze composition and method of use provides safety and protection for potable water systems in RVs, vacation homes, swimming pools and raw water cooled marine engines against freeze damage. The antifreeze composition includes propylene glycol, a sorbitol surfactant having a high Hydrophilic Lipophilic Balance (HLB) number and water. The preferred sorbitol surfactant consists of food grade polyoxyethylene (20) sorbitan monooleate. By directing the antifreeze composition into these water systems, freeze damage is prevented even when the temperature drops to extremely low levels.
Abstract: The present invention relates to a method for increasing the stability of cooling fluid for the engine. This invention selects the most preferred conditions, e.g. the composition of the solution, pH value, means and amount of addition, and proportion of silicate added, so that the products thereof have excellent properties for inhibiting corrosion for many kinds of metals, being with low costs and good storage stability. Moreover, since this method is simple, it is easy to be put into practice and utilized.
Type:
Grant
Filed:
May 11, 2005
Date of Patent:
July 17, 2007
Assignee:
Great Wall Lubricating Oil Application Research Center Co. Ltd.
Abstract: The present invention provides deicing compositions which are environmentally benign, a process for producing the composition from certain waste process streams, and methods of deicing and/or anti-icing.
Abstract: The present invention provides an image display medium including a pair of substrates disposed so as to face each other and first and second particles contained in space between the pair of substrates, wherein the first particles can be positively or negatively charged due to external stimulus and have one color and a particle size distribution in which at least one peak is present on a coarse side of the most frequent particle diameter of the first particles, and the second particles are not charged or can be charged due to the external stimulus to have polarity opposite to that of the first particles and have another color: and an image formation device comprising the image display medium and a generator for generating an electric field between the pair of substrates in accordance with an image to be displayed.