Showing papers on "Isopropyl alcohol published in 2004"
TL;DR: In this paper, the authors measured species concentrations and temperatures across opposed flow diffusion flames of three C3 oxygenated hydrocarbons: isopropyl alcohol, dimethoxy methane (DMM), and dimethyl carbonate (DMC).
104 citations
TL;DR: In this paper, the authors applied commercially available isopropyl alcohol-containing hand rubs to 10 healthy adults every 10 min over a 4-hour period, at the beginning and end of the study, measurable blood alcohol levels (0.5-1.8 mg/l) were recorded in nine subjects.
45 citations
TL;DR: A mathematical model that incorporates mass transfer process and biofilm reactions is presented to predict the performance of a trickle-bed air biofilter (TBAB) for treating isopropyl alcohol (IPA) and acetone (ACE) mixtures as mentioned in this paper.
23 citations
TL;DR: To investigate the effects of Solvents and molecular structure upon acidity, compounds 3 and 4 were titrated potentiometrically with tetrabutylammonium hydroxide in four non-aqueous solvents (isopropyl alcohol, tert-butylalcohol, N,N-dimethylformamide and acetonitrile).
Abstract: 3-Alkyl(Aryl)-4-amino-4,5-dihydro-1H-1,2,4-triazol-5-ones (2) reacted with 2-furoyl chloride and thiophene-2-carbonyl chloride to afford the corresponding 3- alkyl(aryl)-4-(2-furoylamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones (3) and 3-alkyl(aryl)- 4-(2-thienylcarbonylamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones (4), respectively. The new compounds synthesized were characterized by using IR, 1H-NMR, 13C-NMR and UV spectral data together with elemental analysis. In addition, to investigate the effects of solvents and molecular structure upon acidity, compounds 3 and 4 were titrated potentiometrically with tetrabutylammonium hydroxide in four non-aqueous solvents (isopropyl alcohol, tert-butyl alcohol, N,N-dimethylformamide and acetonitrile). The half-neutralization potential values and the corresponding pKa values were determined for all cases.
17 citations
Patent•
06 Feb 2004
TL;DR: In this article, the authors proposed a process for reducing the amount of ultraviolet light absorbing ketone impurities and/or aldehyde impurities in a fluid mixture containing an alcohol, in addition to other impurities.
Abstract: The invention provides a process for the purification of alcohols, particularly for the purification of isopropyl alcohol A invention provides a process for reducing the amount of ultraviolet light absorbing ketone impurities and/or aldehyde impurities in a fluid mixture containing an alcohol in addition to ketone impurities and/or aldehyde impurities, which comprises reacting a fluid mixture containing an alcohol in addition to ketone impurities and/or aldehyde impurities, with a sufficient amount of a reducing agent, under conditions wherein the reducing agent is preferentially more reactive with the ketone impurities and/or aldehyde impurities than the alcohol to thereby form a reaction product; and then recovering a recovered alcohol product from the reaction product
16 citations
TL;DR: In this paper, the gas phase alkylation of isomeric methylphenols (cresols) with isopropyl alcohol over sol-gel prepared alumina catalyst was studied.
Abstract: Nanosized γ-Al 2 O 3 catalyst was prepared by the alkoxide sol–gel method and characterized by XRD and TEM. The porous nature of the catalyst was studied by nitrogen adsorption–desorption isotherms. Acidity of the synthesised material was analyzed by pyridine-adsorbed FT-IR spectroscopy. The gas phase alkylation of isomeric methylphenols (cresols) with isopropyl alcohol over sol–gel prepared alumina catalyst was studied. The reactions were carried out in a continuous process at the atmospheric pressure with dependence on temperature, starting at 210 °C up to the point when the amount of alkylated cresols dropped due to decomposition. Both, O- and C-alkylated products were obtained at lower temperatures, while at higher temperatures ortho -isopropylated derivatives of isomeric cresols were the main products. According to the present method isopropylated cresols can be efficiently obtained with selectivity higher than 90%.
15 citations
Journal Article•
TL;DR: In this paper, the density and viscosity data of binary liquid mixtures of nitromethane with some polar and non-polar solvents have been measured at 298.15 K.
13 citations
TL;DR: Cobalt acetate and cobalt nitrate were employed as precursors to prepare different kinds of Co3O4/Al2O3 catalysts as discussed by the authors, which were used to decompose VOC's such as xylene, isopropyl alcohol and butyl acetate.
Abstract: Cobalt acetate and cobalt nitrate were employed as precursors to prepare different kinds of Co3O4/Al2O3 catalysts. The catalysts were used to decompose VOC's such as xylene, isopropyl alcohol and butyl acetate.
11 citations
TL;DR: The hydrophile-lipophile balance (HLB) value of isopropyl laurate was calculated as 3.5 and its critical micelle concentration (CMC) value was found to be 0.684 mM and 0.687 mM from the conductivity and surface tension curve, respectively.
Abstract: Immobilized Candida antarctica lipase (Novozym 435) was used for the synthesis of isopropyl laurate from isopropyl alcohol and lauric acid. A molecular sieve was used to shift the reaction towards the synthesis. The maximum enzyme activity was obtained at 60 °C. The amount of product seemed to be linearly proportional to the enzyme concentration up to 50 mg. A linear increase in the amount of isopropyl laurate was observed throughout the 50 min reaction. Product formation followed a linear increase up to a lauric acid concentration of 100 mg. Then product formation slowed down. The hydrophile-lipophile balance (HLB) value of isopropyl laurate was calculated as 3.5 and its critical micelle concentration (CMC) value was found to be 0.684 mM and 0.687 mM from the conductivity and surface tension curve, respectively.
9 citations
TL;DR: In this paper, the performance of various dealuminated mordenite catalysts for the isopropylation of naphthalene by a cyclohexane as a solvent was investigated in a high-pressure fixed-bed flow reactor.
8 citations
01 Oct 2004
TL;DR: In this article, the authors investigated the thermodynamic analysis of producing hydrogen-rich fuel-cell feed from the process of dimethyl ether (DME) steam reforming as a function of steam-to-carbon ratio (0-4), temperature (100 C-600 C), pressure (1-5 atm), and product species: acetylene, ethanol, methanol, ethylene, methyl-ethyl ether, formaldehyde, formic acid, acetone, n-propanol, EH, ethane and isopropyl alcohol.
Abstract: The thermodynamic analyses of producing a hydrogen-rich fuel-cell feed from the process of dimethyl ether (DME) steam reforming were investigated as a function of steam-to-carbon ratio (0-4), temperature (100 C-600 C), pressure (1-5 atm), and product species: acetylene, ethanol, methanol, ethylene, methyl-ethyl ether, formaldehyde, formic acid, acetone, n-propanol, ethane and isopropyl alcohol. Results of the thermodynamic processing of dimethyl ether with steam indicate the complete conversion of dimethyl ether to hydrogen, carbon monoxide and carbon dioxide for temperatures greater than 200 C and steam-to-carbon ratios greater than 1.25 at atmospheric pressure (P = 1 atm). Increasing the operating pressure was observed to shift the equilibrium toward the reactants; increasing the pressure from 1 atm to 5 atm decreased the conversion of dimethyl ether from 99.5% to 76.2%. The order of thermodynamically stable products in decreasing mole fraction was methane, ethane, isopropyl alcohol, acetone, n-propanol, ethylene, ethanol, methyl-ethyl ether and methanol--formaldehyde, formic acid, and acetylene were not observed. The optimal processing conditions for dimethyl ether steam reforming occurred at a steam-to-carbon ratio of 1.5, a pressure of 1 atm, and a temperature of 200 C. Modeling the thermodynamics of dimethyl ether hydrolysis (with methanol as the only product considered), the equilibriummore » conversion of dimethyl ether is limited. The equilibrium conversion was observed to increase with temperature and steam-to-carbon ratio, resulting in a maximum dimethyl ether conversion of approximately 68% at a steam-to-carbon ratio of 4.5 and a processing temperature of 600 C. Thermodynamically, dimethyl ether processed with steam can produce hydrogen-rich fuel-cell feeds--with hydrogen concentrations exceeding 70%. This substantiates dimethyl ether as a viable source of hydrogen for PEM fuel cells.« less
TL;DR: The biofilter responded successfully to a switch from acetone to IPA as sole carbon source, displaying little reduction in overall organic carbon removal and exceeds all previous values published in the literature for similar processes.
Abstract: The aerobic biological oxidation of 2-propanol (isopropyl alcohol, IPA) at extremely high concentrations in air by an enriched solvent-tolerant microbial consortium operating at ambient temperature was evaluated for six months. Solventtolerant microbial cells were immobilised onto porous glass pall rings and fed with either IPA or its metabolic product acetone as sole carbon source. Successful biofiltration of solvent vapour at a concentration of 24 g m-3 was achieved with oxidation of up to 100% total inlet carbon. The maximum IPA mass loading and IPA elimination capacity (EC) was 1700 g m-3 h-1. This performance exceeds all previous values published in the literature for similar processes. A slip feed experiment, using acetone, was also performed in order to assess the substrate specificity performance. The biofilter responded successfully to a switch from acetone to IPA as sole carbon source, displaying little reduction in overall organic carbon removal.
Patent•
30 Jun 2004
TL;DR: In this article, a method for treating the synthetic fiber for imparting the functional agent to the fiber in the supercritical carbon dioxide fluid is provided by adding 0.01-20 pt. wt. based on the aramid fiber, then treating at 10-45 MPa pressure and at 100-280°C temperature.
Abstract: PROBLEM TO BE SOLVED: To provide a supercritical carbon dioxide fluid-treating method, capable of penetrating a functional agent sufficiently even if the fiber has a very dense fiber molecular structure such as that of an aramid fiber. SOLUTION: This method for treating the synthetic fiber for imparting the functional agent to the fiber in the supercritical carbon dioxide fluid is provided by adding 0.01-10 mole % at least one polar organic solvent selected from a group consisting of methanol, ethanol, propanol, isopropyl alcohol, butanol, benzyl alcohol, acetone, acetophenone, N-methyl-2-pyrrolidone, methyl ethyl ketone, dimethyl sulfoxide, dimethyl formamide, ethylene glycol and acetonitrile to the supercritical carbon dioxide fluid and then adding the functional agent by 0.01-20 pt. wt. based on the aramid fiber, then treating at 10-45 MPa pressure and at 100-280°C temperature. COPYRIGHT: (C)2006,JPO&NCIPI
TL;DR: In this article, the solubility of components and critical phenomena in a ternary system constituted by potassium nitrate, water, and isopropyl alcohol were studied by the visual-polythermic method in the temperature range 25-90°C.
Abstract: The solubility of components and critical phenomena in a ternary system constituted by potassium nitrate, water, and isopropyl alcohol were studied by the visual-polythermic method in the temperature range 25–90°C. The formation temperature of the critical node of the monotectic equilibrium (critical solution—solid phase) and the solution compositions corresponding to the critical solubility points at different temperatures were determined. Isothermal solubility diagrams of the system were constructed, the previously suggested scheme of the topological transformation of the phase diagrams of ternary stratifying systems constituted by a salt and a binary solvent was confirmed, and the distribution coefficients of isopropyl alcohol at different temperatures were calculated.
TL;DR: In this paper, a series of AlPO4-V2O5 (APV) systems with various vanadia amounts 1-30 mol% were prepared by the impregnation method and calcinated at 400 and 600°C for 4
Abstract: A series of AlPO4-V2O5 (APV) systems with various vanadia amounts 1–30 mol% were prepared by the impregnation method and calcinated at 400 and 600°C for 4 h. The catalysts were characterized by TG/DTG, DSC, IR spectroscopy, XRD, N2 adsorption, and electrical conductivity measurements. The surface acidity and basicity of the catalysts were studied by the dehydration-dehydrogenation of isopropyl alcohol and the adsorption of pyridine. The catalytic gas phase esterification of acetic acid with ethyl alcohol was carried out at 210°C in a flow system at 1 atm using air as a carrier gas. The results showed that the catalysts calcinated at 400°C were active and selective towards the formation of ethyl acetate whereas the calcination of samples at 600°C led to a drastic reduction in both activity and selectivity. Good correlations were obtained between catalytic activities towards ester formation and acidity of the prepared catalysts.
Journal Article•
TL;DR: In this paper, the newly synthesized compounds have been characterized by elemental analyses, IR, 'H NMR, 1 3 C NMR and UV spectral data, and all ten new compounds are titrated potentiometrically with tetrabutylammonium hydroxide in four different nonaqueous solvents such as isopropyl alcohol, tert-butyl alcohol and N,N-dimethylformamide.
Abstract: 3-Alkyl(aryl)-4-amino-4,5-dihydro-1H-1,2,4-triazol-5-ones 2 react with acyl halides such as chloroacetyl chloride, dichloroacetyl chloride and isobutyryl chloride to give the corresponding 3-alkyl(aryl)-4-chloroacetylamino-4,5-dihydro-1H-1,2,4-triazol-5-ones 3, 3-alkyl(aryl)-4-(dichloroacetylamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones 4 and 3-alkyl(aryl)-4-isobutyrylamino-4,5-dihydro-1H-1,2,4-triazol-5-ones 5, respectively. The newly synthesized compounds have been characterized by elemental analyses, IR, 'H NMR, 1 3 C NMR and UV spectral data. In addition, all ten new compounds are titrated potentiometrically with tetrabutylammonium hydroxide in four different non-aqueous solvents such as isopropyl alcohol, tert-butyl alcohol, acetonitrile and N,N-dimethylformamide. The half neutralization potential values and the corresponding pK a values have been determined for all the cases. Thus, the effects of solvents and molecular structure upon acidity are investigated.
Patent•
16 Sep 2004
TL;DR: In this article, a solvent extract of the pip of Yuzu (Citrus junos) is used for making a beautiful skin, which is free from side action and takable over a long period.
Abstract: PROBLEM TO BE SOLVED: To provide a safe food composition, pharmaceutical composition or cosmetic composition exhibiting excellent effect for making a beautiful skin, derived from a natural edible plant, free from side action and takable over a long period. SOLUTION: The composition for making a beautiful skin contains a solvent extract of the pip of Yuzu (Citrus junos). The solvent extract is produced by extracting the fruit or pip of Yuzu with one or more solvents selected from n-hexane, ether, acetone, ethyl acetate, methanol, ethanol, isopropyl alcohol, butanol, 1,3-butylene glycol, ethylene glycol, propylene glycol, glycerol and water or by the supercritical extraction with carbon dioxide gas, preferably an extract with hydrated ethanol having an ethanol concentration of 10-90%(wt/wt). COPYRIGHT: (C)2006,JPO&NCIPI
Patent•
31 Aug 2004
TL;DR: In this article, Malonitrile is reacted with Propionaldehyde in presence of Sulphur powder and Triethylamine in N,N-dimethlyformamide to give 5-Amino-4-Cyano-2-Methyl Thiophene.
Abstract: Malononitrile is reacted with Propionaldehyde in presence of Sulphur Powder and Triethylamine in N,N-dimethlyformamide to give 5-Amino-4-Cyano-2-Methyl Thiophene. 2-fluoronitrobenzene is condensed with 5-Amino-4-Cyano-2-Methyl Thiophene in Isopropyl alcohol and Potassium Hydroxide powder give 4-cyano-2-methyl-1-(2-nitrophenyl amino) Thiophene. Reduction of 4-cyano-2-methyl-1-(2-nitrophenyl amino) Thiophene with Stannous Chloride and Hydrochloric acid in Isopropyl Alcohol and followed by cyclization to get 4-Amino-2-Methyl-10H-Thieno [2,3,-b][1,5] Benzodiazepine . Condensation of 4-amino-2-methyl-10H-Thieno [2,3,-b][1,5] Benzodiazepine and N-methyl Piperazine in presence of Dimethyl Sulfoxide and Toluene gives Olanzapine Technical grade. In anhydrous form. Recrystallization of the Technical grade anhydrous Olanzapine in Dichloromethane gives anhydrous Olanzapine hydrochloride of Form-I.
Patent•
17 Feb 2004
TL;DR: A cleaning composition for treating and removing residue containing hydrocarbons and other flammable substances uses a mixture of one or more cleaning members containing quaternary salts, a chelator and a dispersant, mixed with water as discussed by the authors.
Abstract: A cleaning composition for treating and removing residue containing hydrocarbons and other flammable substances uses a mixture of one or more cleaning members containing quaternary salts, a chelator and a dispersant, mixed with water. The preferred cleaning members are tetradecyltrimethylammonium bromide, tetrasodium ethylenediaminetetraacetic acid, benzethonium hydrochloride and 2-butoxyethanol. The chelator is tetrasodium salt ethylenediamine of tetraacetic acid, and the dispersant is polyvinyl alcohol. Optionally, the cleaner contains ethanol and isopropyl alcohol.
Patent•
28 Apr 2004
TL;DR: In this paper, an organic cobalt compound which is applicable to chemical vapor deposition process or atomic layer deposition process and thermally and chemically stable, a manufacturing method of the organic compound, and a manufacturing of the thin film of cobalt or cobalt silicide using the compound are provided.
Abstract: PURPOSE: An organic cobalt compound which is applicable to chemical vapor deposition process or atomic layer deposition process and thermally and chemically stable, a manufacturing method of the organic cobalt compound, and a manufacturing method of the thin film of cobalt or cobalt silicide using the compound are provided CONSTITUTION: The organic cobalt compound for depositing thin film of cobalt or cobalt silicide is characterized in that it has structure of the following chemical formula 1: CO2(CO)6:Ln, where L is a neutral ligand selected from alkyne (CnH2n-2), alkene (CnH2n), diene, triene, cyclic diene, cyclic triene, isocyanide and alkyl nitrile, wherein n is an integer of 1 to 4 The manufacturing method of the organic cobalt compound comprises the steps of preparing a dispersion solution by adding solvent to cobalt carbonyl; and adding an organic compound of the chemical formula 2 to the dispersion solution, wherein the solvent is selected from saturated and unsaturated aromatic hydrocarbons, cyclic ether, ester, cyclic amine, alcohol and acetone, and wherein the solvent is selected from petroleum ether, hexane, pentane, ethylether, tetrahydrofuran (THF), benzene, toluene, ethyl alcohol, methyl alcohol, isopropyl alcohol, and acetone
Patent•
17 Dec 2004TL;DR: In this article, a process of preparing hydroxyalkyl cellulose derivatives by reacting cellulose and ethylene oxide in the presence of alkali metal hydroxide was proposed.
Abstract: The present invention relates to a process of preparing hydroxyalkyl cellulose derivatives having improved enzymatic resistance. In particular, the present invention relates to a process of preparing hydroxyalkyl cellulose derivatives by reacting cellulose and ethylene oxide in the presence of alkali metal hydroxide, wherein the reaction between cellulose and ethylene oxide is performed in the presence of isopropyl alcohol azeotropic solvent in a horizontally agitated reactor, wherein the ethylene oxide is supplied via two steps, thus resulting in a two-step reaction, and the amount of alkali metal hydroxide remaining after the first reaction is controlled, thereby enabling to provide hydroxyalkyl cellulose derivatives having improved enzymatic resistance and turbidity and to remarkably decrease the solvent usage to have economical and environmental advantages.
Patent•
02 Jul 2004
TL;DR: In this article, a process for resolution of methyl 2-substituted phenylglycine esters and/or acids of the formula I by asymmetric transformation of diastereomeric salts formula (I) comprising resolution of racemic 2-saturated phenyl glycine Esters and or acids of formula I with L(+) tartaric acid in molar ratio of 0.9 to 1.4 in presence of solvent selected from acetone, methanol, ethanol, isopropyl alcohol and mixture thereof.
Abstract: A process for resolution of methyl 2-substituted phenylglycine esters and/or acids of the formula I by asymmetric transformation of diastereomeric salts formula (I) comprising resolution of racemic 2-substituted phenylglycine esters and/or acids of formula (I)with L(+) tartaric acid in molar ratio of 0.9 to 1.4 in presence of solvent selected from acetone, methanol, ethanol, isopropyl alcohol and mixture thereof.
Patent•
08 Dec 2004
TL;DR: In this paper, a method for preparing aluminium alcoholate using metal aluminium and alcohol as raw material is presented, which adopts the following steps: in the acetate solution adding metal aluminium, alcohol and initiating agent, heating and refluxing to make reaction to obtain aluminium alcohol, separating and evaporating so as to obtain aluminum alcoholate, the weight ratio of the described acetate and alcohol is 2-3:1.
Abstract: The present invention discloses a method for preparing aluminium alcoholate Said method uses metal aluminium and alcohol as raw material, and adopts the following steps: in the acetate solution adding metal aluminium, alcohol and initiating agent, heating and refluxing to make reaction to obtain acetate solution of aluminium alcoholate, separating and evaporating so as to obtain aluminium alcoholate The described acetate can be ethyl acetate, propyl acetate, isopropyl acetate and sec-butyl acetate, and the described alcohol can be ethyl alcohol, propyl alcohol, isopropyl alcohol and sec-butyl alcohol, the weight ratio of the described acetate and alcohol is 2-3:1
Patent•
15 Jul 2004
TL;DR: In this paper, a mechanically divided lingo-carbohydrate material composed of non-preliminarily separated cellulose, lignin, and hemicelluloses is conducted for 1 h at 70°C and reaction is carried out in isopropyl alcohol fir 3-15 h at 50-90°C.
Abstract: FIELD: industrial organic synthesis. ^ SUBSTANCE: invention concerns preparation of sodium salts of sulfate esters of lingo-carbohydrate materials, which can be used as chemical additives to control properties of washing fluids used in boring oil and gas wells. Method of preparing water-soluble sulfuric acid esters of cellulose-based lingo-carbohydrate materials consists in that material is activated with sodium hydroxide and then affected by sodium fluorosulfonate. Activation of mechanically divided lingo-carbohydrate material composed of non-preliminarily separated cellulose, lignin, and hemicelluloses is conducted for 1 h at 70°C and reaction is carried out in isopropyl alcohol fir 3-15 h at 50-90°C and molar ratio of lingo-carbohydrate material to sodium fluorosulfonate equal to 1:(1-1.75). ^ EFFECT: enabled utilization of total amount of lingo-carbohydrate material, reduced price cost of final product, improved environmental condition, and widened spectrum of properties of final product. ^ 4 tbl, 15 ex
Patent•
01 Jul 2004
TL;DR: In this paper, an electrode for a lithium secondary battery and a secondary battery containing the electrode are provided, to improve the wettability of an electrode, thereby increasing electrolyte solution infiltration and specific heat and enhancing the stability and performance of a battery.
Abstract: PURPOSE: An electrode for a lithium secondary battery and a lithium secondary battery containing the electrode are provided, to improve the wettability of an electrode, thereby increasing electrolyte solution infiltration and specific heat and enhancing the stability and performance of a battery containing the electrode. CONSTITUTION: The electrode comprises an inorganic additive dispersed in a solvent. Preferably the inorganic additive is at least one selected from the group consisting of silica, zirconia, aluminium, titanium and Sn-based materials, and the content is 0.1-10 wt% based on the weight of an electrode active material; and the solvent is at least one selected from the group consisting of N-methylpyrrolidone, dimethyl acetamide, methyl alcohol, isopropyl alcohol, ethylene glycol, dimethyl acetate, methylethylketone and methylisobutyl alcohol.
Patent•
16 Jan 2004
TL;DR: In this paper, a process for the production of 7-[2-(2-amino-4-thiazolyl)-2-syn-methoxyimino-acetamido]-3-acetoxymethyl-3-cephem-4 carboxylic acid (Cefotaxime) in aqueous isopropyl alcohol is discussed.
Abstract: A process for the production of 7-[2-(2-amino-4-thiazolyl)-2-syn-methoxyimino-acetamido]-3-acetoxymethyl-3-cephem-4-carboxylic acid (Cefotaxime) in aqueous isopropyl alcohol is discussed. The synthesis is effected by condensing 7-aminocephalosporanic acid (7-ACA) with 2-(2-chloroacetamidothiazol-4-yl)-2-syn-methoxyiminoacetyl chloride followed by deblocking amino function by thiourea in basic medium. Finally, 7-[2-(2-amino-4-thiazolyl)-2- syn- methoxyiminoacetamido]-3-acetoxymethyl-3-cephem-4-carboxylic acid is converted into sodium salt with sodium-2-ethylhexanoate in solvent mixture of ethyl acetate and methanol in presence of triethylamine in more than 99 % HPLC purity.
Patent•
26 Oct 2004
TL;DR: In this paper, a glass cleaning solution composition for vehicle is provided, to improve cleaning power, antifreezing property and environmental friendliness by adding a specific alcohol, a moisturizer, a corrosion inhibitor and a pH controller.
Abstract: PURPOSE: A glass cleaning solution composition for vehicle is provided, to improve cleaning power, antifreezing property and environmental friendliness by adding a specific alcohol, a moisturizer, a corrosion inhibitor and a pH controller. CONSTITUTION: The glass cleaning solution composition comprises a solvent comprising 30-35 wt% of ethanol and 5.0-8.0 wt% of isopropyl alcohol; a surfactant; an additive comprising 1-6 wt% of a moisturizer, 0.05-0.15 a corrosion inhibitor and 0.05-0.15 wt% of a pH controller; and the balance of water and ion exchange water. Preferably the moisturizer is at least one selected from the group consisting of glycerin, ethylene glycol and propylene glycol; the corrosion inhibitor is at least one selected from the group consisting of benzotriazole and tolyltriazole; and the pH controller is sodium nitrite.
Patent•
13 May 2004
TL;DR: In this paper, an isopropyl alcohol supply method and its apparatus are provided to be capable of quickly increasing the concentration of isoprophyl alcohol in a drying container for drying a wafer.
Abstract: PURPOSE: An isopropyl alcohol supply method and its apparatus are provided to be capable of quickly increasing the concentration of isopropyl alcohol in a drying container for drying a wafer. CONSTITUTION: Isopropyl alcohol is stored in a vapor generating container(S100). Isopropyl alcohol vapor is generated by heating the vapor generating container(S200). The inner portion of the vapor generating container is pressurized by supplying nitrogen gas into the vapor generating container(S300). Drying gas mixed with the isopropyl alcohol vapor and the nitrogen gas is supplied into a drying container(S400). Preferably, the inner pressure of the pressurized vapor generating container is in the range of 1.5-2.5 Kg/cm2. Preferably, the temperature of the drying gas is in the range of 130-180 °C.
Patent•
31 Jan 2004
TL;DR: In this paper, the authors provided a coating composition for protecting electromagnetic wave, which has excellent dispersibility, spray coating property, flexibility, tensile strength, coating strength, electric properties, chemical reactivity and adhesion to a substrate.
Abstract: PURPOSE: Provided is a coating composition for protecting electromagnetic wave, which has excellent dispersibility, spray coating property, flexibility, tensile strength, coating strength, electric properties, chemical reactivity and adhesion to a substrate. CONSTITUTION: The coating composition for protecting electromagnetic wave comprises 1.0-80.0% of a metal or conductive polymer powder and 20.0-99.0% of an organic binder, wherein the organic binder comprises a mixture containing one or more materials selected from the group consisting of ethyl acetate, butyl acetate, diethylene glycol monobutyl ether, isopropyl alcohol, acetone, dibutyl phthalate, phosphate ester and ethyl cellulose.
Patent•
14 Oct 2004
TL;DR: In this article, a closed system thermoelectric conversion device with a dehydrogenation reaction vessel, a fuel cell, and a reaction vessel was proposed. But the authors did not consider the use of a hydrogenation reaction under the existence of a catalytic catalyst.
Abstract: PROBLEM TO BE SOLVED: To efficiently recycle and reuse wastes exhausted from a fuel cell in a closed system thermoelectric conversion device. SOLUTION: The thermoelectric conversion device 1 is provided with a dehydrogenation reactor vessel 4 generating hydrogen and acetone by making isopropyl alcohol reat under a dehydrogenation endoergic reaction under the existence of hydrogenation catalyst, the fuel cell 8 generating power by supplying the hydrogen and the acetone produced by the dehydrogenation reactor vessel 4 to an anode and a cathode to make an electrochemical reaction, and a hydrogenation reactor vessel 9 producing isopropyl alcohol by introducing wastes exhausted from the anode and the cathode of the fuel cell 8 and making the acetone in the wastes reat under a hydrogenation reaction under the existence of hydrogenation catalyst. The dehydrogenation reaction vessel 4, the fuel cell 8, and the hydrogenation reaction vessel 9 are connected in a closed system, in which, the isopropyl alcohol produced by the hydrogenation reaction vessel 9 is supplied to the dehydrogenation reaction vessel. COPYRIGHT: (C)2005,JPO&NCIPI