Showing papers on "Methyl isobutyl ketone published in 1983"

A nationwide survey on organic solvent components in various solvent products: Part 1. Homogeneous products such as thinners, degreasers and reagents.

Abstract: Organic solvent products used in the various factories were collected nationwide in Japan, and analyzed by gas chromatogarphy. Of the 1179 samples collected, 522 samples were homogeneous (including 321 thinners, 145 degreasers and 56 reagents and others), and were analyzed by means of direct injection into a FID-gas chromatograph with two FSWCOT (OV 101 and PEG 6000) capillary columns. In thinners (n=248), the average number of solvent components per sample was 4.14 when the thinners containing gasoline were excluded. Toluene was the most popular component in thinners (present in 56%) followed by ethyl acetate, methanol, xylenes, ethylbenzene, isobutyl alcohol, ethyleneglycol mono-ethylether acetate, butyl acetate and methyl isobutyl ketone. Gasoline was also detected in 23%. In degreasers (n=123), the average number of solvent components per sample was 1.64 when the degreasers containing gasoline were not taken into account. Trichloroethylene was present in 21% of degreasers followed by tetrachloroethylene, 1, 1, 1-trichloroethane, toluene, acetone, xylenes and ethyl-benzene. Gasoline was found in 14%. A small amount of 1, 4-dioxane was detected as an additive in every 1, 1, 1, -trichloroethane products. With regard to reagents and others (n=53), the avarage number of components per sample was 1.40 if samples containig gasoline were excluded, and most (73%) of reagents and others (n=41) consisted of a single component. The potent toxic solvents such as benzene, chloroform, carbon tetrachloride, 1, 2-dichloroethane, 1, 1, 2-trichloro-ethane, 1, 1, 2, 2-tetrachloroethane and carbon disulfide were only rarely found in the present homogeneous products.

Production of polyhydrogen silsesquioxane

Abstract: PURPOSE: To obtain a polydihydrogen silsesquioxane soluble in solvents, by dissolving trichlorosilane in a solvent saturated with water, and bubbling an inert gas containing steam in the solution. CONSTITUTION: Methyl isobutyl ketone is saturated with about 2 wt% water at 10°C, and trichlorosilane is added slowly to the solution to obtain a reaction liquid. An inert gas such as N 2 is passed through hot water of 50W70°C, and the resultant steam-containing inert gas is bubbled in the above reaction liquid containing trichlorosilane to effect the hydrolysis and the polycondensation of the trichlorosilane to the objective polydihydrogen silsesquioxane soluble in the solvents such as methyl isobutyl ketone. COPYRIGHT: (C)1985,JPO&Japio

Superior solvent blends for synthesis of acrylic resins for high solids coatings

Abstract: According to the present invention, an improved method for providing acrylic copolymer resins is provided in which the polymerization solvent comprises a blend of methyl isobutyl ketone and certain alkyl-substituted benzene solvents. The monomers comprise hydroxy-substituted alkyl (meth)acrylate monomers and non-hydroxy substituted alkyl (meth)acrylate monomers, and the process provides an improved method for forming low molecular weight acrylic resins useful as components in acrylic coatings. The polymerization solvent can remain in the resin to become a solvent employed in the higher solids coating containing the thus-formed acrylic resins and provides improved electrical resistivity, improved solvency and decreased surface tensions over prior art polymerization solvents.

Milling and Suspension Behavior of A12O3 in Methanol and Methyl Isobutyl Ketone

Abstract: Milling and suspension behavior of Al2O3 were studied in two suspending liquids, i.e. methanol (MeOH) and methyl isobutyl ketone (MIBK). Properties were investigated for various mixed solvent ratios. Ball-milling studies were carried out on powders containing “hard” agglomerates. Agglomerate breakdown was monitored by rheology, sedimentation density, and particle size measurements and by direct microscope observations. Particle size reduction kinetics were observed to decrease at high MIBK/MeOH ratios due to increased flocculation in these suspensions. Suspension behavior of deagglomerated (by ball-milling 20 h) Al2O3 was also investigated. Rheology, sedimentation density, and sedimentation “particle” size distribution measurements demonstrated that increased flocculation occurred at high MIBK/MeOH ratios. Electrophoresis measurements indicated that this behavior was due to decreased electrostatic repulsion between particles. Suspension stability (against flocculation) was analyzed using DLVO theory.

5-phenylazo-8-aminoquinoline as a sensitive reagent for the extraction-spectrophotometric determination of palladium(II)

Abstract: The spectrophotometric determination of palladium(II) with 5-phenylazo-8-aminoquinoline (PAQ) is described. The method involves the formation of a Pd-APQ complex in dilute HCl solutions and the conversion of this complex into Pd(PAQ)2 by addition of NaOH. This latter complex is extracted into methyl isobutyl ketone and the absorbance is measured at 620 nm. The molar absorptivity is 7.9×104l·mole−1·cm−1. The method is applied to the determination of Pd(II) in catalysts.

Application of chlorinated polymethylstyrene, CPMS, to electron beam lithography

Abstract: Swelling behavior and resist performance of a series of chlorinated polymethylstyrenes, CPMS, were investigated. Measurements of swelling ratio and resolution of the CPMS resist coating in a wide variety of organic solvents disclosed that resolution depends on the swelling ratio. In addition, it was found that Cellosolve acetate or methyl isobutyl ketone was the most suitable developer, and that the critical swelling ratio might be 3.2 (=1.473) for screening of a developer. Functional testings on CPMS showed the resist had considerably high sensitivity as well as high contrast and dry etch resistance. The selectivity ratio of the resist to aluminum, when the resist was used in a dry etching process, was 1.5 times as high as that of the conventional Novolak‐type positive‐working photoresist.

Spectrophotometric determination of cobalt in steel with 2-(2-thiazolylazo)-4-methyl-5-(sulfomethylamino) benzoic acid (TAMSMB)

Abstract: A method for the determination of cobalt in steel with 2-(2-thi-azolylazo)-4-methyl-5-(sulfomethylamino) benzoic acid (TAMSMB) is proposed. Iron and manganese were previously removed by the extraction from 7M HCl into methyl isobutyl ketone and with an anion exchange column (Diaion SA # 100), respectively. The results of the analyses of steel samples were in good agreement with those by atomic absorption spectrophotometry. This method was compared with the methods using the highly sensitive reagents for cobalt; 4-(5-chloro-2-pyridylazo)-1,3-diaminobenzene(5-Cl-PADAB), 5-(3,5-dibromo-2-pyridylazo)-2,4-diaminotoluene (3,5-diBr-PADAT), 2-(5-bromo-2-pyridylazo)-5-(diethylamino) phenol(5-Br-PADAP), 2-(2-py-ridylazo)-4-methyl-5-(ethylamino) phenol (EAPAC), 2-(3,5-dibromo-2-pyridylazo)-5-(dimethylamino) benzoic acid (3,5-di-Br-PAMB), 3-(2-thiazolylazo)-2,6-diaminotoluene (2,6-TADAT), and 2-nitroso-5-dimethylaminophenol (Nitroso-DMAP).

Conformational transition in PMMA. Methyl isobutyl ketone

Abstract: In this work we have studied the viscometric behaviour of several fractions of PMMA in methyl isobutyl ketone as a function of temperature. A conformational transition has been found in the temperature range 25–35°C. Likewise, the influence of solvent nature on the magnitude of the conformational transition has been studied.

Extraction of Ag(I), Cd(II), In(III), Sn(II), Sn(IV), Sb(III), and U(VI) from aqueous solutions by ketone solutions using single-step batch and continuous SISAK methods1,2

Abstract: The extraction properties of Ag(I), Cd(II), In(III), Sn(II), Sn(IV), Sb(III), and U(VI) from aqueous KI/H2SO4 solution into a mixture of 4-methyl-2-pentanone (methyl isobutyl ketone, MIBK) and cyclohexanone (CHO) were studied. Both single-step batch and SISAK2 methods were used. The oxidation of Sn(II) to Sn(IV) by iodine and complexation of Sn(IV) by 2,3-dimercapto-propanol-1 (BAL) were also investigated. A method for rapid and continuous separation of indium from tin was developed for investigation of short-lived indium fission products.

Carrier for electrophotographic dry type developer

Abstract: PURPOSE:To obtain a coating carrier having good adhesive properties to an iron powder core material and sufficient mechanical strength, by providing a coating layer in which an epoxy resin contg fine powder of silica is cured by a polyamide resin on the surface of the core material CONSTITUTION:A carrier for electrophotographic dry type developer is obtained by dipping the iron powder serving as the core material in the resin solution in which silica fine powder, a epoxy resin and a polyamide resin and if necessary, other resin or an additive are dissolved in a solvent such as methyl isobutyl ketone, xyelen, n-butanol, methyl cyclohexanone and methyl ethyl ketone or those mixed solvent The substance having 90-410m /g surface area by a BET method is preferable as the silica fine powder The iron powder having 30-200mu particle diameter is preferable as the core material, and the material in which the surfaces of reduced iron powder and atomized iron powder, etc are subjected to oxidizing treatment is used

Magnetic behavior of binary liquid mixtures of methyl isobutyl ketone with butanols

Abstract: Mesure des densites, des indices de refraction et des susceptibilites magnetiques de methyl isobutyl cetones melangees a des alcools De l'analyse des indices de refraction de ces systemes on peut conclure a l'absence de complexes intermoleculaires

Liquid-liquid extraction of zinc and cadmium with 1,2-naphthoquinone thiosemicarbazone into methyl isobutyl ketone, and their simultaneous determination by atomic-absorption spectrophotometry

Abstract: Zinc and cadmium are extracted from aqueous solution with 1,2-naphthoquinone thiosemicarbazone for simultaneous determination by atomic-absorption spectrophotometry This compound reacts with zinc and cadmium in weakly acid medium to produce chelates which are extractable into methyl isobutyl ketone The atomicabsorption is measured at 2139 and 2288nm for zinc and cadmium, respectively The sensitivity is 03 ng per ml of original aqueous solution and several foreign ions are tolerated in 100-fold ratio to Zn or Cd

Novel process for producing ether compound

Abstract: PURPOSE: To produce the titled compound in high yield, by reacting a phenol or thiophenol with a halide using a carbonate as a base and methyl isobutyl ketone as a solvent, thereby facilitating the separation of the objective compound from the reaction mixture CONSTITUTION: The compound of formula R 1 -XH[R 1 is (substituted) aryl; X is O or S]is made to react with the compound of formula R 2 -Y[R 2 is (substituted) alkyl, alkenyl or aryl; Y is halogen] in the presence of a carbonate and methyl isobutyl ketone, at a temperature between the boiling point of methyl isobutyl ketone (about 110°C) and room temperature, or under cooling Preferably, water or an amide solvent such as dimethylformamide is added to the reaction system to accelerate the reaction After the completion of the reaction, water is added to the reaction mixture to transfer the raw material and the carbonate to the aqueous phase, and only the objective compound of formula is separated from the methyl isobutyl ketone layer COPYRIGHT: (C)1984,JPO&Japio

Adhesive for water-resistant corrugated cardboard

Abstract: PURPOSE: To improve water resistance and sticking aptitude, and to elongate a pot life of an adhesive, by adding a ketone resin and a water-soluble acrylic compound to the starch adhesive for corrugated cardboard. CONSTITUTION: A starch adhesive for corrugated board is blended with (A) a ketone resin (e.g., a condensate of acetone, MEK, methyl isobutyl ketone, etc. and formaldehyde) in the form of preferably a solution [preferably 20W70wt% solid content, ≤1,500cps Brookfield viscosity] and (B) a water-soluble acrylic compound (preferably poly-N-methylolacrylamide, etc.) in the form of preferably an aqueous solution (preferably 5W20wt% solid content, ≤5,000cps Brookfield viscosity), to give the desired adhesive. A blending ratio of the component A:B by weight is preferably (2:8)W(8:2). COPYRIGHT: (C)1984,JPO&Japio

Reductive alkylating method of aniline derivative

Abstract: PURPOSE:To alkylate an aniline derivative reductively, industrially and easily in high selectivity and high catalytic activity, by alkylating the aniline derivative with an aldehyde, etc. in the presence of hydrogen, a reducing catalyst consisting of Pd, etc. and a sulfur compound. CONSTITUTION:An aniline derivative except a derivative having an NO2 group, preferably p-aminodiphenylamine, is reduced reductively with an aldehyde or ketone, preferably acetone, methyl isobutyl ketone, etc. in the presence of a sulfur compound which is a liquid or solid at ordinary temperature, hydrogen and a reducing catalyst consisting of Pd or Pt or at 80-190 deg.C and a hydrogen pressure of 10-40kg/cm .G to give an alkylated aniline derivative. Sodium sulfate, sodium thiosulfate, sodium bisulfate, diphenyl sulfone, sulfur-containing dispersing agents, cation exchange resins such as sulfur-containing high polymers, etc. may be used as the sulfur compound.

Process for preparing amino acid esters

Abstract: A enolizable organic compound, such as benzyl chloride, is reacted with an acid amide, an alcohol, carbon monoxide, and hydrogen in a homogeneous reaction mixture containing a cobalt carbonylation catalyst, an alkali metal alcoholate, and methyl isobutyl ketone so as to form an N-acylamino acid ester such as N-acetyl-D,L-phenylalanine methyl ester

Solvent extraction for treating phenolic wastewater

Abstract: A two-stage solvent extraction of phenolic wastewater was investigated. In the first step, phenolics are extracted with methylisobutyl ketone (MIBK). In the second step, MIBK (1 to 2 wt %), which dissolves in the wastewater is recovered by extraction with hexane. The phenolics were modeled in this study as phenol and resorcinol. For the first extraction step, the distribution coefficient K/sub D/ for resorcinol in the MIBK-water system was experimentally determined as a function of temperature and resorcinol concentration. The process was simulated on the computer with the ASPEN program, and the results were used to determine the effects of temperature and the MIBK/water ratio in the first extracter on process economics. Of the four cases studied, a water MIBK ratio of 5 and extraction temperatures of 303 K (30/sup 0/C) required the smallest capital and operating costs.

Purification of polyepoxy compound

Abstract: PURPOSE:To prepare the titled compound in high yield, by reacting a polyphenol with an epihalohydrin, etc. in the presence of an alkali metal hydroxide, dissolving the resultant polyepoxy compound in a specific mixed solvent, removing the byproducts from the solution, and distilling out the solvent. CONSTITUTION:A polyepoxy compound is prepared by reacting the polyphenol of formula I (Y is CH3, OCH3, F, Cl, Br or I; n is 0-2) with an epihalohydrin or beta-methylepihalohydrin in the presence of an alkali metal hydroxide. After distilling out the unreacted epihalohydrin or beta-methylepihalohydrin, the reaction product is dissolved in a mixed solvent comprising 30-90wt% of cyclohexanone and 70-10wt% of methyl isobutyl ketone and/or methyl ethyl ketone. The solution is washed with water to remove the by-produced alkali metal salt, and the above mixed solvent is distilled out to obtain the objective compound of formula II[Z is group of formula III ( R is H or CH3)]. USE:Coating material, encapsulating material for electrical parts, casting material, or laminating material.

Production of aqueous polymer dispersion

Abstract: PURPOSE:To enhance the stability or the like of an emulsion by adding a basic substance to an organic solvent-containing emulsion of an ethylenic polymer having acidic electrolytic groups, distilling off the organic solvent to thereby localize the acidic electrolytic groups on the surfaces of polymer particles. CONSTITUTION:An ethylenically unsaturated monomer (A) such as styrene and an unsaturated monomer (B) containing an acidic electrolytic group such as a carboxyl group (e.g., acrylic acid) are emulsion-polymerized in an aqueous medium and an organic solvent in which component (B) has a partition coefficient between the organic solvent and water of not less than 2 (e.g., butyl alcohol or methyl isobutyl ketone). Then, a basic substance (e.g., caustic soda or ammonia) is added to the produced emulsion, and the organic solvent in the emulsion is evaporated by steam distillation. In this way, the acidic electrolytic groups are located on the surfaces of polymer particles to obtain the purpose aq. polymer dispersion excellent in stability and reactivity.

Separation of 4-nitrobenzyl cyanide

Abstract: PURPOSE:To prepare the titled compound useful as a synthetic intermediate of pharmaceuticals, pesticides, and various other chemicals, in high purity and yield, in one step, by the recrystallization from a mixture of 2-, 3- and 4-nitrobenzyl cyanides using a small amount of a specific solvent. CONSTITUTION:The objective compound is separated from a mixute of 2-, 3- and 4-nitrobenzyl cyanides obtained by the nitration ob benzyl cyanide, by dissolving the mixture using 0.5-1ml, based on 1g of the nitrobenzyl cyanides, of an aromatic hydrocarbon selected from benzene, toluene and xylene, a lower alkyl acetate selected from methyl acetate, ethyl acetate, isopropyl acetate and butyl acetate, or an aliphatic ketone selected from methyl ethyl ketone and methyl isobutyl ketone under heating, anc cooling the solution.

3-sulfamyl-4-chlorobenzoic acid derivative and its preparation

Abstract: NEW MATERIAL:N-( 4-Aza-8-hydroxy-endo-tricyclo[5, 2, 1, 0 , ]-decan-4-yl )-4- chloro-3-sulfamoylbenzamide of formulaI. USE:It has hypotensive and diuretic activity and is useful as a drug. PROCESS:The compound of formulaIcan be prepared by reacting the 3-sulfamyl- 4-chlorobenzoic acid of formula II (X is halogen) or its reactive derivative with 4-amino-4-aza-8-hydroxy-endo-tricyclo[5,2,1,0 , ]-decane of formula III in a solvent such as methanol, 2-butanone, methyl isobutyl ketone, etc., in the presence of an acid acceptor preferably triethylamine, potassium carbonate, etc. The compound of formulaIhas steric isomers, i.e. endo-type and exo-type with respect to the hydroxyl group at the 8-position of the tricyclodecane ring.

Method for forming resist image

Abstract: PURPOSE:To shorten the time taken for development and thereby to increase the resolution of a resist image, by using as a developer methyl isobutyl ketone or a mixture thereof with another ketone CONSTITUTION:In a method wherein at least one selected from among a homopolymer of a monomer of the formula and a copolymer thereof with another vinyl monomer is applied on a substrate and a desired part thereof is irradiated with a radiation and then developed by a developer to thereby form a resist image on the substrate, methyl isobutyl ketone, alone or as a mixture thereof with another ketone, is used as the developer When a ketone developer consisting of one kind of ketone or at least two kinds of ketones, particularly the one descibed above, is used, the time taken for development is shortened to about 1-4min, ie to such a degree that a spray development process is applicable, and thereby a clear resist image can be obtained

Composition for conductively anisotropic heat sealing, its manufacture and its usage

Abstract: PURPOSE: To obtain a composition with hot-contact bonded dry coating film therefrom conductively anisotropic and heat-sealable, comprising conductive fine powder such as graphite one, hot-contact bonding polymeric binder and solvent. CONSTITUTION: The objective composition, i.e. a suspension with an apparent specific gravity 0.7W2.0 and viscosity 50W1,500 poises, can be obtained by mutually mixing the following components into a homogeneous dispersion: (A) 0.5W 20wt% of conductive fine powder consisting of at least one sort of matter selected from graphite, silver, copper and nickel powder with a size 0.5W4μ and carbon black powder with a size ≤0.1μ, (B) 5W60wt% of hot-contact bonding polymeric binder (made up of at least one sort of polymer selected from chloroprene synthetic rubber and ethylene-vinyl acetate copolymer resin), (C) 30W 90wt% of a solvent consisting of at least one sort of solvents selected from isophorone, diacetone alcohol, methyl isobutyl ketone, xylenes, toluene, etc. and, if necessary, (D) 0.5W15wt% of tackifier (e.g. terpene resin, aliphatic hydrocarbon resin). COPYRIGHT: (C)1985,JPO&Japio

Recovering method of ethyleneamine

Abstract: PURPOSE:To extract and recover ethyleneamine very efficiently from an aqueous solution containing the ethyleneamine, by using an organic solvent, e.g. cyclopentanone or cyclohexanone, having a ketonic group. CONSTITUTION:In recovering an ethyleneamine from an aqueous solution containing the ethyleneamine, an organic solvent having a ketonic group, e.g. methyl ethyl ketone, methyl isobutyl ketone, cyclopentanone, cyclohexanone or methylcyclohexanone, particularly the cyclopentanone or cyclohexanone, and a mixed solvent with another organic solvent, preferably a 3-8C alcoholic type solvent, in an amount equimolar or more with the ethyleneamine contained in the aqueous solution to extract and recover the ethyleneamine selectively in the organic phase.

Production of epoxy resin composition

Abstract: PURPOSE:To produce an epoxy resin composition suitable as a varnish resin for printed board, a sealant, a pouring material or the like, by reacting a specified polyphenol mixture with an epihalohydrin. CONSTITUTION:An epoxy resin composition is produced by reacting a polyphenol mixture consisting of 5-95wt% diphenylolpropane and 95-5wt% tetrabromodiphenylolpropane with 0.5-1.5mol, per eq. OH of polyphenol, of an epihalohydrin (e.g., epichlorohydrin) at about 60-150 deg.C for about 20min-4hr preferably in a solvent such as water or methyl isobutyl ketone in the presence of an alkali (e.g., caustic soda) in an at least equimolar amount to the epihalohydrin.