Showing papers on "Methyl isobutyl ketone published in 1980"
TL;DR: Determination of Cd, Zn, Pb, Cu, Fe, Mn, Co, Cr and Ni in coastal sea-water by graphite-furnace atomic-absorption spectrometry after preconcentration by solvent extraction and use of a chelating ion-exchange resin is described.
222 citations
TL;DR: In this article, the copper chromite-catalyzed vapor phase hydrogenation of binary and ternary mixtures, at 150-250 °C, under 20-100 bars total pressure, with excess hydrogen, in a continuous-flow reactor was investigated.
63 citations
TL;DR: In this article, a method for the particle size independent determination of Ni, Fe, Mg, Cu, Al, Sn, Mo and Ti in synthetic ester lubricating oils by spectrometric analysis is presented.
Abstract: A method for the particle size independent determination of Ni, Fe, Mg, Cu, Al, Sn, Mo, and Ti in synthetic ester lubricating oils by spectrometric analysis is presented. Partial dissolution of Cr, Si, Pb, and Ag also occurs. Used ester lubricating oils as well as samples prepared with -325 mesh (44 ..mu..m) or -200 mesh (74 ..mu..m) metal powders were reacted with a small amount of hydrofluoric acid and aqua regia at 65/sup 0/C for 45 min with ultrasonic agitation. The reacted mixture was then diluted with a methyl isobutyl ketone and isopropyl alcohol mixture and analyzed spectrometrically. The recoveries for metal powder suspensions of Ni, Fe, Mg, Cu, Al, Sn, Mo, and Ti ranged from 97 to 103% and the relative standard deviation ranged from 4 to 10%. In addition to the metal powder suspensions, over 200 aircraft oil samples were analyzed. The method is much faster and more convenient than previously reported particle size independent methods using ashing techniques.
36 citations
TL;DR: In this paper, relative reactivities of 19 saturated acyclic and cyclic ketones were measured in the copper chromite-catalyzed hydrogenation of binary or ternary mixtures, with excess hydrogen, in the vapor phase at 185-240 °C under 20-100 bars total pressure in a continuous-flow high-pressure reactor.
34 citations
TL;DR: A flow injection technique with an organic solvent carrier stream is recommended for the determination of trace elements by atomic absorption spectrometry Carrier streams of methyl isobutyl ketone and especially n-butyl acetate are effective in enhancing sensitivity as discussed by the authors.
30 citations
21 citations
Patent•
17 Nov 1980
TL;DR: An improved energy-saving fuel additive for diesel engines and gasoline engines which comprises separate compositions which raise the flash point from about 6' to 29'C was proposed in this article.
Abstract: An improved energy-saving fuel additive for diesel engines and gasoline engines which comprises separate compositions which raise the flash point from about 6` to 29`C. In the case of the diesel additive, the following formulation is preferred: Elemental iron .01%, Methyl isobutyl ketone 5.0%, Picric acid 1.5% Normal butyl alcohol 20.0%, Kerosene 73.0%, Nitrobenzene .08%, Primene 81R .05%. The composition of the agent for gasoline to high flash point is somewhat different and may be noted as follows: Copper cabonate hydroxide .02%, Methyl isobutyl ketone 5.0%, Normal butyl alcohol 20.0%, Kerosene 73.0%, Picric acid 1.5%, Nitrobenzene .08%, Primene 81R .05%.
20 citations
TL;DR: In this article, a simple rapid method was proposed for the determination of rhenium (as perrhenate) in which the brown-violet complex produced is measured at 546 nm.
14 citations
Patent•
12 Mar 1980
TL;DR: In this paper, the authors presented a method to prepare a titled resin having high Young's modulus and soluble in a ketone solvent or in a mixture of ketone and an aromatic hudrocarbon using an organic solvent.
Abstract: PURPOSE: To prepare the titled resin having high Young's modulus and soluble in a ketone solvent or in a mixture of ketone and an aromatic hudrocarbon, by reacting a specific polymeric diol, a low-molecular diol, an organic diisocyanate and a reaction terminator using an organic solvent. CONSTITUTION: The objective resin is prepared by reacting (A) a polymeric diol having an average molecular weight of 500W5,000, (B) a low-molecular diol having an average molecular weight of ≤, and (C) an organic diisocyanate in (D) a solvent such as methyl isobutyl ketone, and adding (E) a reaction terminator having one or more active hydrogen atoms such as isopropanol to the reaction mixture. The amount of the component (A) is 1W30(wt)% of the sum of the components (A), (B) and (C), and the ratio of the total number of OH groups in the component (A) and the component (B) to the number of isocyanate groups in the component (C) is adjusted to 1/(1.0W1.1). COPYRIGHT: (C)1982,JPO&Japio
13 citations
12 citations
Patent•
14 Mar 1980
TL;DR: In this paper, the solubility difference of the diastereomeric mixture formed by treatment of a derivative of dl-benzazonine with an optically active organic acid in a solvent was used to obtain the title compound.
Abstract: PURPOSE:To obtain the title compound, a lenitive having no side effect, low toxicity and a high biological activity, by making use of the solubility difference of the diastereomeric mixture formed by treatment of a derivative of dl-benzazonine with an optically active organic acid in a solvent. CONSTITUTION:A derivative of dl-benzazonine of the formula (R=H, methyl) is treated with an optically active organic acid (example; optically active mandelic acid, optically active tartaric acid, etc.) in a solvent to form diastereomeric mixture, form which a derivative of l-benzazonine is isolated by making use of the solubility difference of the isomers to a solvent, e.g. acetone, methyl ethyl ketone, methyl isobutyl ketone, etc.
TL;DR: In this paper, the extraction of chromium(VI) at pH 2-12 with thiosemicarbazide into methyl isobutyl ketone is described, and the detection limit is 30 ng ml −1, and the concentration which gives 1% absorbance is 60 ng ml -1, when the organic phase is used directly.
Patent•
28 May 1980
TL;DR: In this article, a process for recovering lignosulfonates from spent sulfite liquor resulting from the cooking of cellulose-containing material is described. But it is not suitable for the use of solvents.
Abstract: A process for recovering lignosulfonates from spent sulfite liquor resulting from the cooking of cellulose-containing material comprising extracting the spent liquor with a liquid amine dissolved in a strongly polar ketone, preferably methyl isobutyl ketone, as an organic solvent, which ketone is poorly soluble in water, to form a lignosulfonate-bearing organic phase and an aqueous phase, separating the organic phase from the aqueous phase, recovering the substantially sugar-free lignosulfonates from the organic phase by stripping the organic phase with a base insoluble in the organic phase, regenerating the stripped, lignosulfonate-free organic phase by treating it with an aqueous solution of sodium bisulfite to bring the liquid amine in the phase into bisulfite form and returning the regenerated organic phase for further extraction of spent liquor.
01 Jan 1980
TL;DR: In this article, the equilibrium distribution coefficients (K/sub d/) as a function of pH for phenol, dihydroxybenzenes, and trihydroxene at 25/sup 0/C were measured.
Abstract: Methyl isobutyl ketone (MIBK) and diisopropyl ether (DIPE) were evaluated as solvents for extraction of phenols from water by measuring the equilibrium distribution coefficients (K/sub d/) as a function of pH for phenol, dihydroxybenzenes, and trihydroxybenzenes at 25/sup 0/C. MIBK gave much higher K/sub d/ values than DIPE, particularly for the polyhydric phenols, so that solvent-to-water mass flow ratios (S/W) exceeding 0.14 and 0.39 would be required at low pH for effective removal of di- and trihydric phenols, respectively, with MIBK, compared with S/W greater than or equal to 1.4 and 8, respectively, for DIPE. The effect of pH was described by a simple ionization model. In the phenol/water/MIBK system, K/sub d/ values increased with decreasing temperature (30 to 75/sup 0/C) at all concentrations, and at 30/sup 0/C, they were high enough for the effective extraction of phenol contained at up to 20% by wt in the organic phase. Vacuum steam stripping was the best choice for the removal of residual dissolved MIBK. Extraction with MIBK may thus be used to recover, rather than degrade, phenols contained in aqueous streams from refining, petrochemical, and coal conversion processes.
TL;DR: A high-performance liquid chromatographic procedure for the determination of serum iron and good reproducibility, recovery, and correlation with the conventional colorimetric method were observed.
Patent•
16 Jun 1980
TL;DR: In this article, a uniform solid phase formed from nitrocellulose (NC) with an organic solvent inert to the isocyanate group (NCO) and the organic solvent consisting of a solvent capable of dissolving the NC partly and the remaining solvent incapable of removing the NC and the NC as a substantial solid component was obtained.
Abstract: PURPOSE: To obtain the titled composition having improved safety and good operating ratio of taking out a molded article from a packaging container, by forming a uniform solid phase from nitrocellulose (NC) with a specific solvent inert to the isocyanate group (NCO). CONSTITUTION: A composition consisting of a uniform solid phase formed from nitrocellulose (NC) with an organic solvent inert to the isocyanate group (NCO) and the organic solvent consisting of a solvent capable of dissolving the NC partly and the remaining solvent incapable of dissolving the NC and the NC as a substantial solid component. The composition is obtained by adding methyl isobutyl ketone to NC wetted by an alcohol and/or water, kneading the resultant mixture, adding toluene to the resultant pastelike composition, and removing the alcohol and/or water under reduced pressure substantially. The content of the NC is preferably 40W80wt%. USE: Particularly suitable to a coating composition for polyurethane resin. COPYRIGHT: (C)1982,JPO&Japio
Patent•
09 Apr 1980
TL;DR: In this article, one mole of methyl isobutyl ketone is reacted with 0.02-2mol of hydrogen peroxide, preferably a >= 10wt% solution, in the presence of an acid selected from sulfuric, perchloric, toluenesulfonic, and benzenesulfonic acids as an acid catalyst at 50-250 deg.C, to give isovaleric acid.
Abstract: PURPOSE:To obtain isovaleric acid useful as a raw material for perfumes, medicines, and pesticides at a low cost in one step, without using a heavy metal or corrosive material as a catelyst, by reacting methyl isobutyl ketone with hydrogen peroxide in the presence of a specific acid catalyst. CONSTITUTION:One mole of methyl isobutyl ketone is reacted with 0.02-2mol of hydrogen peroxide, preferably a >=10wt% solution, in the presence of an acid selected from sulfuric, perchloric, toluenesulfonic, and benzenesulfonic acids as an acid catalyst at 50-250 deg.C, preferably 70-200 deg.C, to give isovaleric acid. Preferably, the amount of water is small, and the reaction is carried out while distilling off the water. For industrial practice, water is evaporated as an azeotropic mixture with methyl isobutyl ketone or a solvent, and distilled off the system.
TL;DR: In this article, the niobium-sulfochloro-phenol S complex was extracted into amyl alcohol and then back-extracted into water for acid decomposition and pyrosulfate fusion.
Patent•
05 Aug 1980
TL;DR: In this article, the authors proposed a method to obtain the title substance useful as a raw material for the intermediate of medicines, pesticides, and perfumes, in high purity and yield in a short time, by extracting the reaction product, prepared from phenol and glyoxylic acid in a relatively high temperature range, with a solvent.
Abstract: PURPOSE:To obtain the title substance useful as a raw material for the intermediate of medicines, pesticides, and perfumes, in high purity and yield in a short time, by extracting the reaction product, prepared from phenol and glyoxylic acid in a relatively high temperature range, with a solvent. CONSTITUTION:Phenol(P) is reacted with glyoxylic acid(G) in an aqueous medium in the presence of an alkali(A) at 40-100 deg.C, preferably 60-90 deg.C, to give a reaction mixture, which is extracted with a solvent to afford the title compound. A lower alkyl ester of acetic acid, e.g. methyl or ethyl acetate, or ether, e.g. diethyl ether, an aliphatic ketone, e.g. methyl isobutyl ketone, may be used as the solvent. The molar ratio of G:P:A is 1:0.8-10:1-5, preferably 1:1.2-3.5:1.2-4.
Patent•
20 Sep 1980
TL;DR: In this paper, the authors proposed a water-insoluble antifouling agent that is effective in preventing the adhesion of algae to fishing nets for a long time, without polluting seawater, comprising a trialkyltin hydroxide and an arylsulfonic acid derivative as active constituents in an organic solvent.
Abstract: PURPOSE:The title water-insoluble agent effective in preventing the adhesion of algae to fishing nets for a long time, without polluting seawater, comprising a trialkyltin hydroxide and an arylsulfonic acid derivative as active constituents in an organic solvent. CONSTITUTION:An antifouling treating agent comprising (A) a trialkyltin hydroxide, preferably triisobutyltin hydroxide, and (B) an arylsulfonic acid derivative, preferably dodecylbenzenesulfonic acid, in (C) an organic solvent, e.g. isopropyl alcohol or methyl isobutyl ketone, at a weight ratio of (A) to (B) of 1:1-1.5, preferably 1:1.5 for treating fishing nets. The addition of a phenolic compound substituted by an alkyl group and chlorine and/or a pyridazine derivative further improves the durability of films formed by drying the agent.
Patent•
17 Jan 1980
TL;DR: In this article, the authors propose to enable formation of a pattern without any chap in the developed area, by stopping development of a resist, such as poly-alpha-cyanoacrylate after development by use of a specified mixed solution, or rinsing the resist with the solution.
Abstract: PURPOSE:To enable formation of a pattern without any chap in the developed area, by stopping development of a resist, such as poly-alpha-cyanoacrylate after development by use of a specified mixed solution, or rinsing the resist with the solution. CONSTITUTION:A resist film formed on a substrate by using poly-alpha-cyanoacrylate or poly-alpha-amidoacrylate of the formula, or these copolymer is, after prebaking, irradiated by electron beams. The resist is developing with a solution, such as a mixture of ethyl acetate and methyl isobutyl ketone, and then, development stop or rinse is carried out with a solvent mixture consisting of an organic solvent incapable of dissolving the resist polymer, such as methyl isobutyl ketone and of an organic solvent capable of dissolving the resist polymer, such as ethyl cellosolve acetate in an amount of 2 to 30%.
Patent•
18 Apr 1980
TL;DR: In this paper, the polymer of the polymethacrylate base resist is dissolved in C6H5Cl, etc. and this is coated on a silicon oxide film and is heated, after which it is radiated with high energy beams such as of far ultraviolet rays or the like through a quartz mask attached with chrome patterns or the likes.
Abstract: PURPOSE:To increase sensitivity and form fine patterns of good accuracy by subjecting polymethacrylate base resist to heat treatment after radiation of high energy beams thence developing the same. CONSTITUTION:The polymer of the formula [R1 is H, alkyl; R2 is alkyl; n is the degree of polymerization] is dissolved in C6H5Cl, etc. and this is coated on a silicon oxide film and is heated, after which it is radiated with high energy beams such as of far ultraviolet rays or the like through a quartz mask attached with chrome patterns or the like. Next, it is heated for 5-20 minutes at, e.g., 160-200 deg.C, after which it is developed with a developing solution (mixed solution or the like of methyl isobutyl ketone 3 volumes and isopropyl alcohol 1 volume). In this way, the development may be preformed at the rediation quantity about one-third that in dveloping without heat treatment right after the radiation. Hence, the temperature rise of wafers is preveinted, the production of strain obviated, patterning of high accuracy may be performed and the number of treatment per time is considerably increased.
Journal Article•
Patent•
10 May 1980
TL;DR: In this article, an aqueous solution or solid of crude p-hydroxybenzaldehyde obtained by various processes, is dissolved in an organic solvent which is insoluble or slightly soluble in water and is a good solvent of the p -hydroxy benzaldehyde (e.g. diethyl ether, methyl isobutyl ketone).
Abstract: PURPOSE:To prepare the title compound useful as an intermediate of drugs, in high purity and yield, by treating an alkaline aqueous solution of p-hydroxybenzaldehyde successively with an organic solvent which is insoluble or slightly soluble in water, and with an alkaline aqueous solution, and crystallizing the objective compound at a specific pH. CONSTITUTION:An aqueous solution or solid of crude p-hydroxybenzaldehyde obtained by various processes, is dissolved in an organic solvent which is insoluble or slightly soluble in water and is a good solvent of the p-hydroxybenzaldehyde (e.g. diethyl ether, pref. methyl isobutyl ketone). The pH of the solution is adjusted to >=10 by adding an alkaline aqueous solution. After separating the mixture into two phases, the alkaline aqueous solution layer is added with a mineral acid to attain a pH value of 4-7, pref. 5.5-6.5. The crystallized p-hydroxybenzaldehyde is separated and purified.
Patent•
14 Feb 1980
TL;DR: In this paper, it was shown that 2,2,6, 6, 6-tetramethyl-4-oxotetrahydropyran (TTPK) can be made to react with NH3 in the presence of a catalyst, such as I or VIII group metals in the periodic table, their compounds or Lewis acid nonmetallic compounds, at 300-400 deg.C when a raw material is TTPH, or at 230-450 deg.
Abstract: PURPOSE:To prepare nitrogen-containing compounds such as gamma-collidine, easily, by reacting 2,2,6,6-tetramethyl-4-hydroxytetrahydropyran etc. which are by-products in the preparation of methyl isobutyl ketone from acetone, with NH3. CONSTITUTION:2,2,6,6-Tetramethyl-4-hydroxytetrahydropyran (TTPH) or 2,2,6, 6-tetramethyl-4-oxotetrahydropyran (TTPK), is made to react with NH3 in the presence of a catalyst, such as I or VIII group metals in the periodic table, their compounds or Lewis acid nonmetallic compounds, at 300-400 deg.C when a raw material is TTPH, or at 230-450 deg.C when that is TTPK, to give gamma-collidine. When the reaction temperature is 200-360 deg.C, 2,2,6,6-tetramethyl-4-piperidone is obtained.
Patent•
29 Nov 1980
TL;DR: In this article, a solution of methyl isobutyl ketone (MIBK) and water is distilled by blowing steam therein to separate and recover MIBK from the above-mentioned solution.
Abstract: PURPOSE:To separate and recover methy isobutyl ketone in one stage at a low temerature, by the steam distillation of the solution of methyl isobutyl ketone, e.g. used in the separation stage of zirconium and hafnium, and water through introduction of steam. CONSTITUTION:A solution of methyl isobutyl ketone (MIBK) and water is distilled by blowing steam therein to separate and recover MIBK from the above- mentioned solution. The aqueous phase of the distillate saturated with MIBK may be used as an aqueous phase for hafnium extraction stage without losing MIBK. EFFECT:Simple devices with little loss in handling and little deterioration of MIBK due to the low temperature. No fear for mixing of other solvents for recovery in the aqueous phase of the extracting agent.
01 Oct 1980
TL;DR: In this article, a variety of liquid waste types was tested, including those encountered in the nuclear industry as well as some organic liquids representative of non-nuclear industrial wastes, including vacuum pump oil, tri-n-butyl phosphate (TBP), normal paraffin hydrocarbon solvent (NPH), a mixture of 30 vol% TBP in NPH, carbon tetrachloride (CCl/sub 4/), trichloroethane, toluene, hexone (methyl isobutyl ketone), polychlorobiphenyl (
Abstract: Laboratory studies on the destruction of liquid organic wastes by acid digestion are discussed A variety of liquid waste types was tested, including those encountered in the nuclear industry as well as some organic liquids representative of non-nuclear industrial wastes The liquids tested were vacuum pump oil, tri-n-butyl phosphate (TBP), normal paraffin hydrocarbon solvent (NPH), a mixture of 30 vol% TBP in NPH, carbon tetrachloride (CCl/sub 4/), trichloroethane, toluene, hexone (methyl isobutyl ketone), a mixture of hexone and NPH, polychlorobiphenyl (PCB), isopropanol, normal-decane, and two waste organic solutions from Hanford radioactive waste tanks The tests demonstrated that several types of organic liquids can be destroyed by the acid digestion process 8 figures, 19 tables
Patent•
15 Apr 1980
TL;DR: In this paper, the authors proposed a method to raise impurity removing efficiency and crude phosphoric acid purifying efficiency by extracting crude acid with an org. solvent; washing the extracted org. soln. with an aq. of one or more kinds of soln; and back-extracting the washed layer with water.
Abstract: PURPOSE:To raise impurity removing efficiency and crude phosphoric acid purifying efficiency by extracting crude phosphoric acid with an org. solvent; washing the extracted org. solvent layer with an aq. soln. of one or more kinds of sol. salts; and back-extracting the washed layer with water. CONSTITUTION:Wet process crude phosphoric acid is extracted with an org. solvent such as methyl isobutyl ketone. To the extracted org. solvent layer is added an aq. soln. of one or more kinds of sol. salts such as Na2CO3 forming no precipitate together with phosphoric acid and dissolved impurities, and they are stirred to wash the org. layer. The amt. of the sol. salts added is 0.15mol or more, esp. 0.08-0.15 mol as cation to 1mol of phosphoric acid in the layer. The washed org. layer is then back-extracted with water to obtain high purity phosphoric acid. The washed org. layer may be washed with a little water or phosphoric acid.
Patent•
10 Nov 1980
TL;DR: In this article, the authors presented a method to obtain the title compound useful as an antiozonant, without using special catalysts, in high yield even in the case wherein higher alkyl ketone is used as raw material, by the catalytic hydrogenation of mitrodiphenylamine and an alkyls ketone in the presence of an alcohol.
Abstract: PURPOSE:To obtain the title compound useful as an antiozonant, without using special catalysts, in high yield even in the case wherein higher alkyl ketone is used as raw material, by the catalytic hydrogenation of mitrodiphenylamine and an alkyl ketone in the presence of an alcohol. CONSTITUTION:An alkylaminodiphenylamine of formula II is obtained by the catalytic hydrogenation of nitrodiphenylamine and an alkyl ketone of formula I (R is 1-2C alkyl; R' is 3-6C alkyl) in the presence of a 1-6C alcohol, e.g. methanol, ethylene glycol, hexanediol, etc. methyl isobutyl ketone, ethyl amyl ketone, etc. may be cited as the alkyl ketone. The amount of said alcohol used is suitably 10- 50wt% based on nitrodiphenylamine. EFFECT:There is no necessity of using a poisoned noble-metal catalyst or synthesizing a Schiff base as an intermediate.