Showing papers on "Isopropyl alcohol published in 1981"
TL;DR: Isopropyl alcohol disappeared from the blood at a rate following first-order kinetics in both cases, and blood half-live were estimated at 155 and 187 minutes in the two patients, respectively.
Abstract: Two cases of acute overdose with isopropyl alcohol are reported. Blood concentrations of the alcohol and its major metabolite, acetone, were measured during the metabolism phase of the alcohol, and acetone was elevated thirty-seven hours later in one case. Isopropyl alcohol disappeared from the blood at a rate following first-order kinetics in both cases. Blood half-lives were estimated at 155 and 187 minutes in the two patients, respectively. Methods
61 citations
TL;DR: In this article, the reduction of n-butyraldehyde to n-butyl alcohol at room temperature in a fast stoichiometric reaction, whereas NaHFe(CO) 4 is inactive under the same conditions.
35 citations
TL;DR: In this article, a clean (110) face of a copper crystal at room temperature and photoelectron spectra were obtained using He(I) (21.2 eV) radiation.
34 citations
TL;DR: Two laboratory assistants developed contact dermatitis from a disposable swab for pre‐injection use that gave positive allergic reactions to propylene oxide in both patients, one of whom also reacted to isopropyl alcohol.
Abstract: Two laboratory assistants developed contact dermatitis from a disposable swab for pre-injection use, containing isopropyl alcohol 70% and propylene oxide 1%. Patch testing gave position allergic reactions to propylene oxide in both patients, one of whom also reacted to isopropyl alcohol. Testing of 25 control persons gave negative results.
29 citations
Patent•
09 Nov 1981TL;DR: In this article, a fast drying stable pituitous powder suspension in an alcoholic/aqueous medium having a high alcohol content and a low water content, containing hydroxyethyl cellulose as the essential suspending agent, was presented.
Abstract: A novel fast drying stable pituitous powder suspension in an alcoholic/aqueous medium having a high alcohol content and a low water content, containing hydroxyethyl cellulose as the essential suspending agent, said alcohol content exceeding the upper solubility of hydroxyethyl cellulose in said alcohol and the water content being sufficient to prevent precipitation of said suspending agent and at least 5% by weight; having utility in the preparation of viscous liquid, semi-solid or solid suspension products such as creams or sticks, more specifically, roll-ons or stick deodorants and medicated lotions which may also be pump activated. The alcohol utilized herein is monohydric such as ethanol, methyl or isopropyl alcohol. However, a polyhydric alcohol such as propylene glycol, glycerine and/or polypropylene glycols may be partially substituted for the monohydric alcohol. Sodium or potassium bicarbonate suspensions have been found to be less irritating to the body and dry faster than bicarbonate solutions because the bicarbonate is delivered as a powder to be activated by body moisture.
20 citations
TL;DR: In this paper, the aquation kinetics of cis-CoNH 3 Br(en) 2 ] 2+ were investigated in aqueous mixtures of ethyl alcohol, isopropyl alcohol and t -butyl alcohol.
15 citations
Patent•
15 Oct 1981
TL;DR: In this article, an epoxy resin composition having a short curing time, excellent transparency and a low cure shrinkage, prepared by mixing epoxy resins with an acid anhydride type curing agent, a quat ammonium hydroxide and an alcohol or water, is presented.
Abstract: PURPOSE:An epoxy resin composition having a short curing time, excellent transparency and a low cure shrinkage, prepared by mixing an epoxy resin with an acid anhydride type curing agent, a quat ammonium hydroxide and an alcohol or water CONSTITUTION:To 100ptswt epoxy resin are added 60-160ptswt curing agent comprising an acid anhydride 005-1ptwt quat ammonium hydroxide represented by the formula, wherein R1, R2, R3 and R4 are each a C1-5 alkyl, benzyl or phenyl, and acting as a cure accelerator and 05-10ptswt alcohol or water Examples of the acid anhydride include phthalic anhydride and maleic anhydride Examples of the quat ammonium hydroxide include benzyltrimethylammonium hydroxide and ethyltri-n-propyl-ammonium hydroxide Examples of the alcohol include methyl alcohol, ethyl alcohol and isopropyl alcohol As the water distilled water is used
12 citations
Patent•
09 Apr 1981
TL;DR: In this paper, a defrosting and deicing agent is used for window panels in winter weather by using a mixture of a monohydric alcohol, a polyhydric alcohol and water.
Abstract: PURPOSE:A defrosting and de-icing agent, useful for defrosting a car windowpanel in winter, which comprises a mixed solution of a monohydric alcohol, a polyhydric alcohol and water in a specified proportion. CONSTITUTION:A stock solution is prepared by mixing 20-91 parts of a 1-3C monohydric alcohol (methyl alcohol, isopropyl alcohol, etc.). 5-60 parts of 2-4C polyhydric alcohol (ethylene glycol, glycerol, etc.) and 4-20 parts of water. Said stock solution is used for melting and removing ice, snow, frost, etc., on a material, by being jetted by use of a propellant such as CO2, LPG or flon.
11 citations
TL;DR: Graft polymerization of methyl methacrylate (MMA) onto cotton cellulose using vanadium pentanitrate as initiator was studied under a variety of conditions as mentioned in this paper.
Abstract: Graft polymerization of methyl methacrylate (MMA) onto cotton cellulose using vanadium pentanitrate as initiator was studied under a variety of conditions. The graft yield increased with increasing initiator concentration up to 8 mmole/l. and then decreased upon further increase in initiator concentration. Increasing MMA concentration from 1 to 5% was accompanied by a significant increase in the degree of grafting. The latter was also affected by the kind and concentration of the acid incorporated in the polymerization medium. Based on graft yields, the efficiency of the acids follows the order H2SO4 > HNO3 > HClO4. Replacement of the acid with isopropyl alcohol was also examined. An isopropyl alcohol concentration of 10% constitutes the optimal concentration for grafting. Maximum graft yield depends upon the polymerization temperature; it follows the order 50°C ≥ 60°C > 40°C > 30°C > 70°C. Reaction mechanisms for grafting in the presence of acid as well as in the presence of isopropyl alcohol are proposed.
10 citations
Journal Article•
TL;DR: Both pretreatments (esterification and acetylation) serve to make the catalytic points more active in the elastic elements than in the other components of tissue.
Abstract: An esterification with isopropyl alcohol containing 0.2% periodic acid and 2% acetone (at 56 degrees C for 16 hours) followed by a treatment in a special physical developer, similarly, an acetylation with a 3:2 mixture of pyridine and acetic anhydride (at room temperature for 16 hours) followed by the same development, render the elastic fibres and membranes visible. Both pretreatments (esterification and acetylation) serve to make the catalytic points more active in the elastic elements than in the other components of tissue.
8 citations
Patent•
ARCO1
TL;DR: In this paper, the separation of isopropyl alcohol from tertiary butyl alcohol is accomplished by providing an adsorbent comprising asymetric apertures greater than five angstroms in length.
Abstract: The present invention provides a novel method for removing minor amounts of isopropyl alcohol from a process stream primarily comprising tertiary butyl alcohol. The separation of isopropyl alcohol from tertiary butyl alcohol is accomplished by providing an adsorbent comprising asymetric apertures greater than five angstroms in length, and less than five angstroms in width. Preferably, a carbonaceous adsorbent comprising such apertures is utilized to effect the separation of isopropyl alcohol from tertiary butyl alcohol.
TL;DR: In this paper, the first and zero order with respect to substrate and iodine, respectively, were investigated for isopropyl alcohol by aqueous iodine at pH 9.18.
Abstract: Kinetics of oxidation of isopropyl alcohol by aqueous iodine has been investigated at pH 9. 18. The reaction is first and zero order with respect to substrate and iodine, respectively. Molecular iodine is more effective in oxidizing alkoxide ion than ROH. The influence of various factors such as ionic strength, inorganic salts, D2O and temperature on the initial rate has been studied and a hydride abstraction mechanism is suggested for the reaction.
Patent•
16 Jul 1981
TL;DR: In this article, a method for preparing stable crystals of a salt of Ceftizoxime which comprises mixing an aqueous solution of the salt with isopropyl alcohol and collecting the precipitating crystals is presented.
Abstract: A method for preparing stable crystals of a salt of Ceftizoxime which comprises mixing an aqueous solution of a salt of Ceftizoxime and isopropyl alcohol and collecting the precipitating crystals. Crystals obtained in this manner are more stable than the crystals obtained from prior art methods involving mixed solvents of water and ethanol.
TL;DR: Bronsted acid centers on the surface of the Sn/Mo oxide catalyst are shown to play a decisive role in isopropyl alcohol conversion to acetone in this article, where they are used as catalysts.
Abstract: Bronsted acid centers on the surface of the Sn/Mo oxide catalyst are shown to play a decisive role in isopropyl alcohol conversion to acetone.
Patent•
31 Aug 1981
TL;DR: In this article, the authors proposed a composition consisting of an antistatic base, e.g. a long-chain aliphatic amine and amide, without causing the swelling or cracking of the surface thereof in applying to the surface of a plastic.
Abstract: PURPOSE: The titled composition consisting of an antistatic base, e.g. a long- chain aliphatic amine and amide, n-hexane, n-propyl alcohol, etc. in specific amounts without causing the swelling or cracking of the surface thereof in applying to the surface of a plastic. CONSTITUTION: A composition prepared by mixing 0.2W0.6wt% one or more antistatic bases of a long-chain aliphatic amine and amide, phosphoric ester, quaternary ammonium salt, polyethylene glycol (ester) or ethoxy long-chain aliphatic amine, preferably the quaternary ammonium salt, with 99.8W79.4wt%, preferably 89.8W84.4wt%, n-hexane and 0W20wt% one or more alcohols of n- or isopropyl alcohol and n- or iso-butyl alcohol, particularly 10W15wt% isopropyl alcohol. USE: General household articles, productive mechanical parts, automotive parts, etc. COPYRIGHT: (C)1983,JPO&Japio
TL;DR: In this article, cyclohexane 1,2-diol has been phosphorylated to the cyclic phosphorochloridate (2, X = O) and chloridothioate (2; X = S).
Abstract: Cyclohexane 1,2-diol (1) has been phosphorylated to the cyclic phosphorochloridate (2; X = O) and chloridothioate (2; X = S). Hydrolysis of the former with boiling aqueous acetone gave 2-hydroxycyclohexyl dihydrogen phosphate (3; X = O, R = H) and excess isopropyl alcohol gave the diisopropyl phosphate (3; X = O, R = (CH3)2CH). Reaction of the chloridate (2; X = O) with aniline, diethylamine, and morpholine gave the corresponding amidates (4–6). The chloridothioate (2; X = S) similarly gave amidates (8, 9) with morpholine and aniline, but with isopropyl alcohol the cyclic isopropyl phosphate (10) was obtained. Attempted hydrolysis (aqueous acetone) of the chloridothioate (2; X = S) resulted in decomposition. Salicylic acid (11) with phosphorus oxychloride gave the cyclic phosphorochloridate (12) which reacted with ethanol, propanol, isopropyl alcohol and benzyl alcohol to give the alkoxy derivatives (13–16). The highly sterically hindered alcohols, t-butanol and benzhydrol did not react. The alko...
Patent•
02 Sep 1981
TL;DR: In this paper, a plasma etching on a Si3N4 film is performed with CH4 gas mixed preliminarily with butyl acetate vapor, the etching speed is not only increased but also maintained uniformly on both the central and peripheral parts.
Abstract: PURPOSE:To shorten time required for etching and to have uniform etching performance for both the central and peripheral parts, by mixing alcohol or ester or mixture thereof with the main constituent gas. CONSTITUTION:When a plasma etching on a Si3N4 film is performed with CH4 gas mixed preliminarily with butyl acetate vapor, the etching speed is not only increased but also maintained uniformly on both the central and peripheral parts. Butyl acetate can be replaced by either isopropyl alcohol or ethyl alcohol. A similar result is found in the case of reactive ion etching on the SiO2 and Si3N4 films.
TL;DR: In this article, Ritter's reaction of atactic poly(acrylonitrile) with N-hydroxymethylamides of acetic, benzoic and benzenesulfonic acids were examined in tetramethylene sulfone under conditions where benzyl alcohol, isopropyl alcohol and triphenylmethanol appear as nonreactive.
Abstract: The course of Ritter's reaction of atactic poly(acrylonitrile) with N-hydroxymethylamides of acetic, benzoic and benzenesulfonic acids and with N-hydroxymethylimides of succinic, phthalic and o-sulfobenzoic acids were examined in tetramethylene sulfone under conditions where benzyl alcohol, isopropyl alcohol and triphenylmethanol appear as nonreactive. The reaction systems have a stronger tendency towards crosslinking than that exhibited under comparable conditions by solutions of poly(N-benzamidomethylacrylamide), poly(N-phthalimidomethylacrylamide) and poly(N-o-sulfobenzamidomethylacrylamide) prepared as reference standards by the solution polymerization of the N-substituted acrylamides in methanol with dibenzoyl peroxide as initiator.
TL;DR: In this article, a mixture of PZT, PbO and a water solution of PVA were prepared with distilled water and isopropyl alcohol for better cold pressing behavior and more uniform microstructures.
Patent•
12 Sep 1981
TL;DR: In this paper, an oil burner fuel of kerosene of fuel oil is mixed with an auxiliary fuel diluted with an adequate solvent, consisting of 2-400ppm (vol.) iso- or n-propyl alcohol, 0.15-1.5ppm xylene, and 0.3-2.7ppm liquid paraffin as needed, to obtain a reformed fuel.
Abstract: PURPOSE:To reduce the amount of fuel consumed, by adding specific amounts of isopropyl alcohol or n-propyl alcohol and xylene to an oil burner fuel. CONSTITUTION:An oil burner fuel of kerosene of fuel oil is mixed with an auxiliary fuel diluted with an adequate solvent (e.g., kerosene, gas oil, etc.), consisting of 2-400ppm (vol.) iso- or n-propyl alcohol (A), 0.15-1.5ppm xylene (B), and 0.3-2.7ppm liquid paraffin (C) as needed, to obtain a reformed fuel. The reformed fuel can be burned in various types of burners, e.g., of oil-pressure type, rotary type, spray type, etc.
Patent•
17 Jan 1981
TL;DR: In this article, the solvent composed of 50-90vol% of any of methyl alcohol, ethyl alcohol, isopropyl alcohol as lower alcohol and 50-10vol%) of any acetone and methyl ethyl ketone as high volatile ketone or acetate is used as the solvent of the coat for evacuated mold molding.
Abstract: PURPOSE:To expedite drying of the coat and improve molding efficiency by constituting the solvent of the coat for evacuated mold molding with lower alcohol and high volatile ketone or acetate. CONSTITUTION:The solvent composed of 50-90vol% of any of methyl alcohol, ethyl alcohol, isopropyl alcohol as lower alcohol and 50-10vol% of any of acetone and methyl ethyl ketone as high volatile ketone and methyl acetate and ethyl acetate as acetate is used as the solvent of the coat for evacuated mold molding. The reasons for limiting the contents are: The lower alcohol suppresses the inflammability and volatility of high volatile ketone and acetate and improves workability. If the contents of high volatile ketone or acetate exceeds 50vol% of contents, its inflammability increases and its drying becomes excessively fast, making the coating difficult.
Patent•
26 Oct 1981
TL;DR: In this article, a waste oil of an engine oil is mixed with a mixed solvent of (A) a (halogenated) hydrocarbon solvent having a boiling point ≥ 150 deg.C with (B) propyl alcohol, stirred thoroughly and allowed to stand or centrifuged to remove the precipitate.
Abstract: PURPOSE:To obtain easily a lubricating oil having a viscosity, specific gravity, acid value, etc. approximate to those of a fresh oil by removing a precipitate from a waste oil of an engine oil with a mixed solvent of a hydrocarbon solvent with propyl alcohol, and distilling the liquid component. CONSTITUTION:A waste oil of an engine oil is mixed with a mixed solvent of (A) a (halogenated) hydrocarbon solvent having a boiling point <=150 deg.C with (B) propyl alcohol, stirred thoroughly and allowed to stand or centrifuged to remove the precipitate. The mixed solvent is then removed from the resultant liquid component by the distillation to give the aimed lubricating oil. A 4-9C hydrocarbon solvent, petroleum ether and carbon tetrachloride, trichlene, etc. may be cited as the component (A), and isopropyl alcohol is preferred as the component (B). The volume ratio between the waste oil and the mixed solvent is 1:0.3-1:20, preferably 1:0.5- 1:10. EFFECT:The active component, e.g. an additive, can be maintained.
Patent•
10 Sep 1981
TL;DR: In this article, the titled fuel suitable for internal combustion engine, obtainable readily, reinforcing the deflagration properties of inexpensive alcohols, being substituted for petroleum resorces, obtained by adding nitrocellulose cotton to a solution of an alcohol, followed by blending.
Abstract: PURPOSE:The titled fuel suitable for internal combustion engine, obtainable readily, reinforcing the deflagration properties of inexpensive alcohols, being substituted for petroleum resorces, obtained by adding nitrocellulose cotton to a solution of an alcohol, followed by blending CONSTITUTION:A given volume of nitrocellulose cotton (preferably fibrous or particulate state, the surroundings of the cotton are covered with a combustible film which is insoluble in an alcoholic solution) is added to a solution of alcohols (preferably, a reproducible material, eg, starch, molasses, etc, synthetic alcohol, eg, methanol, isopropyl alcohol, etc), and blended to give a reinforced alcohol fuel The pulverization and fine granulation of the nitrocellulose cotton itself make the covering treatment better, and the jetting of the mixed fuel to the cylinder and the ignition to the nitrocellulose cotton during combustion and deflagration more smooth, quick, and secure EFFECT:A small environmental pollution caused by exhaust gas
TL;DR: In this article, the Arrhenius activation energy and the enthalpy and volume changes due to dissociation of NaI in i-PrOH-H2O mixtures were calculated.
Abstract: Ultrasonic relaxational absorption was observed in solutions of NaI in i-PrOH. Assuming the excess ultrasonic absorption to be caused by the relaxation of the dissociation equilibrium of NaI in the solutions, the dissociation and recombination rates of NaI, the Arrhenius activation energy, and the enthalpy and volume changes due to dissociation were calculated; these were compared with the values estimated from other methods. An increase of the dissociation constant of NaI was observed with an increase in the concentration of H2O in i-PrOH–H2O mixtures.
Patent•
16 Jul 1981
TL;DR: An improved method of 3-(4-pyridinyl)-2-cyclohexen-1-one oxime from ethyl 5-oxo-2-[(4 pyridyl)-carbonyl]-hexanoate is presented in this article.
Abstract: An improved method of preparing 3-(4-pyridinyl)-2-cyclohexen-1-one oxime from ethyl 5-oxo-2-[(4-pyridinyl)-carbonyl]hexanoate is a one pot sequence which comprises first heating ethyl 5-oxo-2-[(4-pyridinyl)carbonyl]hexanoate with excess sulfuric acid, neutralizing the excess acid, extracting the resulting 3-(4-pyridinyl)-2-cyclohexen-1-one with isopropyl alcohol, draining off the heavier aqueous layer, adding hydroxylamine hydrochloride to the isopropyl alcohol solution of said 2-cyclohexen-1-one, stirring the mixture at reflux, basifying the mixture and evaporating it to dryness, and isolating 3-(4-pyridinyl)-2-cyclohexen-1-one oxime from the residue. The oxime is an intermediate for preparing 3-(4-pyridinyl)aniline, in turn, an intermediate for preparing rosoxacin, an antibacterial agent.
Patent•
08 Sep 1981
TL;DR: In this paper, a method for deodorizing lower alcohols such as ethanol and isopropyl alcohol and their oxy derivatives such as ethers and eaters is described, including contact with a deodorising contact mass comprising metals and/or metal oxides, preferably of the metals of Group IB, VB, VIB, VIIB, and VIII of the Periodic Table.
Abstract: Methods for deodorizing lower alcohols such as ethanol and isopropyl alcohol and their oxy derivatives such as ethers and eaters are disclosed, including contacting these compounds with a deodorizing contact mass comprising metals and/or metal oxides, preferably of the metals of Group IB, VB, VIB, VIIB, and VIII of the Periodic Table, where the metal oxides are at least partially reduced and the deodorizing contact mass has a minimum particle dimension of greater than about .254 mm so as to be in a form suitable for use in a fixed bed contacting process. In a preferred embodiment, isopropyl alcohol is deodorized employing such deodorizing contact masses, preferably comprising Group VIII metals such as nickel, iron, cobalt and the like, on a support, so that the contact mass has a surface area less than about 1,500m2 per gram.
Patent•
06 Jul 1981
TL;DR: In this article, the authors proposed a method to eliminate the interference of hydrocarbon and make analysis with good accuracy in analysis of SO4 ions in combustion exhaust gases, by passing the sample dissolved in a specific concn. of isopropyl alcohol through a reversed layer distribution tupe column having the packings which do not react with specific sulfuric acids.
Abstract: PURPOSE:To eliminate the interference of hydrocarbon and make analysis with good accuracy in analysis of SO4 ions in combustion exhaust gases, by passing the sample dissolved in a specific concn. aquoues soln. of isopropyl alcohol through a reversed layer distribution tupe column having the packings which do not react with specific sulfuric acids. CONSTITUTION:In a barium chloranilate analysis method (EPA method) of measuring the sulfuric acids in the gases exhausted from automobiles, particularly from diesel vehicles and the like, a 10-60vol% aqueous soln. (30% is best) of isopropyl alcohol (IPA) is flowed and the sample extracting exhaust gas sample with an IPA 30vol% aqueous soln. is injected into an injection port 3 from a loop 2, and both of these are flowed through a reversed layer distribution column D contg. packings (about 10mum mean grain sizes) which do not react with sulfuric acids, such as polystylene, whereby the hydrocarbon in the sample is adsorbed. The effluent which has been controlled to 60vol% IPA concn. by being added with 100% IPA is passed through an Ag type cation exchange column then through an H type cation exchange colcumn. The liberated SO4 ions are passed through a barium chloranilate column, thereby liberating chloranile acid ions equiv. to SO4. These ions are then colored and the light absorbancy is measured.