Showing papers on "Methyl isobutyl ketone published in 2013"

Catalytic Performance of Zeolite‐Supported Vanadia in the Aerobic Oxidation of 5‐hydroxymethylfurfural to 2,5‐diformylfuran

Abstract: The catalytic performance of zeolite-supported vanadia catalysts was examined for the aerobic oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) in organic solvents such as N,N-dimethylformamide (DMF), methyl isobutyl ketone, toluene, trifluorotoluene and DMSO. Catalysts based on the four different zeolite supports H-beta, H-Y, H-mordenite, and H-ZSM-5 with 1–10 wt % vanadia loading were prepared and characterized by nitrogen physisorption, X-ray powder diffraction, scanning electron microscopy, ammonia temperature-programmed desorption, Raman spectroscopy and UV/Vis spectrophotometry. The H-beta zeolite catalysts were found to contain highly dispersed vanadium oxide species at all loadings, and provided the highest reaction selectivity towards DFF and the lowest metal leaching of the examined systems. In particular, 1w t % V 2O5/H-beta was found to be a stable, recyclable, and non-leaching catalyst for the production of DFF under mild conditions in DMF as solvent, although with low DFF yield. To increase the yield, oxidation of HMF at elevated pressures was also investigated with this catalyst. Under optimized conditions, a reaction selectivity towards DFF of > 99 % at 84 % HMF conversion was obtained, albeit with some contribution from lixiviated species to the total catalyst activity.

Cu catalyzed oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran and 2,5-furandicarboxylic acid under benign reaction conditions

Abstract: The renewable chemical building block 5-hydroxymethylfurfural (HMF) was oxidized to 2,5-diformylfuran by an oxidation system consisting of the radical 2,2,6,6-tetramethyl-piperidin-1-oxyl (TEMPO) and CuCl. The system was optimized by exploring several reaction conditions and by employing nitrogen containing promoters (NCPs) to obtain excellent yields. In acetonitrile a 95% DFF yield was obtained after 24 h with ambient pressure of dioxygen at room temperature in the presence of different NCPs, which – to our knowledge – is the best result reported thus far for this reaction. The use of NCPs made it further possible to apply various traditional solvents, e.g. acetone, methanol and methyl isobutyl ketone for the reaction. The latter can be used as extraction solvent for HMF synthesis in aqueous media and thus integrate the two processes. Additionally, HMF was oxidized to 2,5-furandicarboxylic acid by a modified oxidation protocol consisting of CuCl and t-BuOOH. In all the reactions, mild conditions, including room temperature were employed.

Solvent-free synthesis of C10 and C11 branched alkanes from furfural and methyl isobutyl ketone.

Abstract: Our best results jet: C10 and C11 branched alkanes, with low freezing points, are synthesized through the aldol condensation of furfural and methyl isobutyl ketone from lignocellulose, which is then followed by hydrodeoxygenation. These jet-fuel-range alkanes are obtained in high overall yields (≈90%) under solvent-free conditions.

Recovery of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) from Ralstonia eutropha cultures with non-halogenated solvents.

Abstract: Reduced downstream costs, together with highpurity recovery of polyhydroxyalkanoate (PHA), will accel-erate the commercialization of high quality PHA-basedproducts. In this work, a process was designed for effectiverecovery of the copolymer poly(hydroxybutyrate-co-hydro-xyhexanoate) (P(HB-co-HHx)) containing high levels ofHHx (>15mol%) from Ralstonia eutropha biomass usingnon-halogenated solvents.Severalnon-halogenatedsolvents(methyl isobutyl ketone, methyl ethyl ketone, and butylacetate and ethyl acetate) were found to effectively dissolvethe polymer. Isoamyl alcohol was found to be not suitablefor extraction of polymer. All PHA extractions were per-formedfrombothdryandwetcellsatvolumesrangingfrom2mL to 3L using a PHA to solvent ratio of 2% (w/v). Ethylacetate showed both high recovery levels and high productpurities (up to 99%) when using dry cells as startingmaterial. Recovery from wet cells, however, eliminates abiomass drying step during the downstream process, poten-tiallysavingtimeandcost.Whenwetcellswereused,methylisobutyl ketone (MIBK) was shown to be the most favorablesolvent for PHA recovery. Purities of up to 99% and totalrecovery yields of up to 84% from wet cells were reached.During polymer recovery with either MIBK or butyl acetate,fractionation of the extracted PHA occurred, based on theHHxcontentofthepolymer.PHAwithhigherHHxcontent(17–30mol%) remained completely in solution, while poly-mer with a lower HHx content (11–16mol%) formed a gel-like phase. All PHA in solution could be precipitated byaddition of threefold volumes of n-hexane or n-heptane tounfiltered PHA solutions. Effective recycling of the solventsin this system is predicted due to the large differences in theboilingpointsbetweensolventandprecipitant.Ourfindingsshowthattwonon-halogenatedsolventsaregoodcandidatesto replace halogenated solvents like chloroform for recoveryof high quality PHA.Biotechnol. Bioeng. 2012;xxx: xxx–xxx. 2012 Wiley Periodicals, Inc.KEYWORDS: polymer recovery; non-halogenated solvents;polyhydroxyalkanoate; poly(hydroxybutyrate-co-hydroxy-hexanoate); methyl isobutyl ketone

Enhanced yields of furfural and other products by simultaneous solvent extraction during thermochemical treatment of cellulosic biomass

Abstract: Furfural derived from pentose sugars is one of the key reactive intermediates for production of hydrocarbons from cellulosic biomass for use as drop-in fuels. Simultaneous extraction into a solvent immiscible in water can substantially enhance furfural yields by removing it from the aqueous environment where the yield would otherwise be limited by its rapid degradation to chars and other carbon rich compounds that are loosely termed humins. Thus, in this study, the effectiveness of the organic solvent methyl isobutyl ketone (MIBK) in improving furfural yields from maple wood was determined for reactions of 5 wt% solids in 0.1 M sulfuric or hydrochloric acid at 170 °C over a range of reaction times. For comparison, pure xylose, glucose, and Avicel cellulose were also reacted under the same conditions. Various process configurations based on simultaneous hydrolysis and dehydration were compared to acid hydrolysis followed by dehydration to furfural with and without simultaneous extraction. Without MIBK extraction, the maximum furfural yields were less than 65% when maple wood was reacted for about 40–45 min with either sulfuric or hydrochloric acid. However, the yield increased significantly to about 85.3% when MIBK extraction was employed in combination with sulfuric acid catalysis for 50 min, while combining MIBK extraction with hydrochloric acid catalysis only increased the yield to ∼67.0%. Simultaneous extraction with MIBK also improved yields of other products such as 5-HMF and levulinic acid, compared to results from the acids alone.

Extraction Equilibria of Lithium with Tributyl Phosphate, Diisobutyl Ketone, Acetophenone, Methyl Isobutyl Ketone, and 2-Heptanone in Kerosene and FeCl3

Abstract: The extraction equilibrium behavior of Li by tributyl phosphate (TBP), diisobutyl ketone, acetophenone, methyl isobutyl ketone, and 2-heptanone in kerosene were investigated. The partition coefficient of Li with TBP in kerosene decreased significantly when the volume concentration of TBP was greater than 60%. The values derived for the partition coefficients of four selected ketones in kerosene were smaller than that of TBP in kerosene. The stoichiometric coefficients between TBP and Li, the stoichiometric coefficients between the four selected ketones and Li, and the apparent equilibrium constant for the extraction reaction equation for TBP and the four ketones in kerosene were obtained. The tendency in extraction with the TBP and four selected ketones in kerosene can be predicted from these parameters. The polar solvents used as diluents for TBP can yield higher Li partition coefficients, strong dilution effects for TBP, and strong polarity and low density of the extracting solvents formed with both pol...

Simulation and Operation Cost Estimate for Phenol Extraction and Solvent Recovery Process of Coal-Gasification Wastewater

Abstract: To further reduce the total phenols of coal-gasification wastewater which comes from the Lurgi pressurized coal-gasification process, methyl isobutyl ketone (MIBK) instead of diisopropyl ether (DIPE) is used as the extraction solvent in the process to remove the phenols. To obtain process parameters for an industrial trial, process simulations with a treatment capacity of 100 ton/h wastewater are carried out. The simulation results show that with the use of MIBK as an extraction solvent, the total phenol concentration of coal-gasification wastewater can be reduced from 5410 ppm to less than 200 ppm. The operation cost estimate shows that using MIBK as an extraction solvent to extract and remove phenols from coal-gasification wastewater has good economic feasibility. With the process parameters obtained from the simulation, an industrial trial is implemented and satisfactory agreement is found. With the total phenol concentration reduced to below 200 ppm in the pretreatment, the coal-gasification wastewate...

Linde Type a Zeolite and Type Y Faujasite as a Solid-Phase for Lead, Cadmium, Nickel and Cobalt Preconcentration and Determination Using a Flow Injection System Coupled to Flame Atomic Absorption Spectrometry

Abstract: In this work, a flow injection analysis (FIA) method for the trace determination of lead, cadmium, nickel and cobalt in natural waters by formation of neutral chelates with ammonium pyrrolidine dithiocarbamate (APDC) was developed. The neutral chelates formed was retained in a mini-column packed with Linde type A zeolite (LTA) and type Y Faujasite zeolite (FAU) and then eluted with methyl isobutyl ketone (MIBK) to flame atomic absorption spectrometry (EAA) for its detection. Physicochemical characterization of this zeolite was carried out by Fourier Transform infrared spectroscopy and attenuated total reflectance (FTIR and IR-ATR), scanning electron microscopy and energy dispersive X-ray microanalysis (SEM-EDX) and X-ray power diffraction (XRD). Then, a FIA configuration was used with a column preconcentration system coupled to the detection system at room temperature (22?C). The detection limit and the relative standard deviation for 5 determinations of different solutions of Pb2+, Co2+, Ni2+ and Cd2+ for FAU and LTA zeolite were calculated. The sampling frequency ranged from 18-35 h-1 and preconcentration factors from 21-250 were achieved, for a sample volume of 6 mL using 20 mg of sorbents, indicating a high retention of the analytes on the zeolites material. The recoveries obtained in natural waters samples were close to 100% for all ions metal using synthetic zeolites, confirming the applicability of the method. The isotherm models of Langmuir, Scatchard, Freundlich and Dubinin-Radushkevich were used to study the equilibrium data, indicating that successfully followed the Freundlich and Dubinin-Radushkevich (D-R) isotherms at low metal ion concentration. The Freundlich parameter n varied between 0.35-1.01, whereas D-R isotherm yields the sorption free energy E 8 kJ.mol-1 indicating psysisorption.

Ruthenium/1,1 '-Bis(diphenylphosphino)ferrocene-Catalysed Oppenauer Oxidation of Alcohols and Lactonisation of alpha,omega-Diols using Methyl Isobutyl Ketone as Oxidant

Abstract: A number of ruthenium catalysts, made in situ from [Ru(p-cymene)Cl-2](2) and various monodentate and bidentate phosphorus ligands were screened in the double Oppenauer oxidation of 1,6-hexanediol to caprolactone using methyl isobutyl ketone as oxidant and potassium carbonate as base. The catalyst based on 1,1-bis(diphenylphosphinyl)ferrocene gave this lactone in excellent yield. The same catalyst was evaluated for the oxidation of other diols to their lactones, of primary alcohols to the corresponding aldehydes and of secondary alcohols to the ketones under the same reaction conditions. The products were obtained in moderate to excellent yields.

Equilibrium and Kinetic Studies of the Reactive Extraction of Nicotinic Acid with Tri-n-octylamine Dissolved in MIBK

Abstract: The design of an extraction process requires equilibrium and kinetic data for the acid (solute)–amine (solvent) system used. In this study, equilibrium and kinetic experiments on the recovery of nicotinic acid (0.02–0.10 kmol·m–3) were performed using tri-n-octylamine (TOA; 0.115–0.459 kmol·m–3) dissolved in methyl isobutyl ketone (MIBK) as a diluent. The chemical equilibrium of acid and amine is interpreted as a result of the formation of both 1:1 and 2:1 complexes with an equilibrium constant (KE) of 37.11 (kmol·m–3)−1.21. The mass-transfer coefficient (kL = 2.03 × 10–5 m·s–1) of nicotinic acid in MIBK was determined in a stirred cell. Based on the values of Hatta number (0.089–0.123) and the criterion proposed by Doraiswamy and Sharma (Heterogeneous Reactions: Analysis, Examples, and Reactor Design; John Wiley & Sons: New York, 1984), the reaction was found to be a very slow chemical reaction occurring in the bulk of the organic phase. The reaction was found to have orders of 0.8 with respect to nicoti...

Characterization and performance of the bifunctional platinum-loaded calcium-hydroxyapatite in the one-step synthesis of methyl isobutyl ketone

Abstract: Calcium-hydroxyapatite catalysts loaded with different amounts of platinum Pt( x )/CaHAp were synthesized and characterized by N 2 -adsorption, X-ray diffraction, transmission electron microscopy, Fourier transform infrared, ultraviolet–vis–NIR spectroscopy and temperature programmed reduction. It was found that the loaded platinum was mainly exchanged and dispersed on the apatite surface, forming particles with an average size of 2 nm. The exchanged platinum, as shown by XRD, did not affect the apatite structure or its crystallinity. The specific surface area of the bare CaHAp as well as the mean pore diameter, diminished by increasing the Pt loading, probably because the pores were partially blocked. The Pt( x )/CaHAp samples calcined at 500 °C contained, beside the exchanged platinum, Pt and PtO. H 2 -TPR results showed that the platinum occupied on the apatite at least two different sites. The acid–base and redox properties of the catalysts were studied using, as the probe reaction, butan-2-ol conversion. The impregnation of CaHAp with Pt decreased its natural basic properties and enhanced markedly the dehydrogenation of butan-2-ol into methyl ethyl ketone (MEK). In the presence of air, the production of MEK increased abruptly with the temperature. The reaction started at 30 °C, passed through a maximum (90% of conversion) at 60 °C and then it decreased rapidly. This important activity at low temperatures was attributed to Pt and Pt 2+ species associated with the basic Ca 2+ –O 2− groups of the apatite. The synthesized bifunctional catalysts were also investigated in the acetone conversion, in one step, into methyl isobutyl ketone (MIBK). The optimal performance was achieved with the sample loaded with 0.5 wt.% Pt. It displayed at 150 °C and stationary state a MIBK yield of 23% with a selectivity of 74%. Moreover, all the Pt( x )/CaHAp catalysts showed an acceptable stability over time on stream with no production of heavy compounds.

SML resist processing for high-aspect-ratio and high-sensitivity electron beam lithography

Abstract: A detailed process characterization of SML electron beam resist for high-aspect-ratio nanopatterning at high sensitivity is presented. SML contrast curves were generated for methyl isobutyl ketone (MIBK), MIBK/isopropyl alcohol (IPA) (1:3), IPA/water (7:3), n-amyl acetate, xylene, and xylene/methanol (3:1) developers. Using IPA/water developer, the sensitivity of SML was improved considerably and found to be comparable to benchmark polymethylmethacrylate (PMMA) resist without affecting the aspect ratio performance. Employing 30-keV exposures and ultrasonic IPA/water development, an aspect ratio of 9:1 in 50-nm half-pitch dense grating patterns was achieved representing a greater than two times improvement over PMMA. Through demonstration of 25-nm lift-off features, the pattern transfer performance of SML is also addressed.

Method for preparing 5-hydroxymethylfurfural

Abstract: The invention belongs to the technical field of productions of chemical products, in particular to a method for preparing 5-hydroxymethylfurfural The method includes steps of taking a macromolecular polyphosphazene polymer matrix as a solid acid type heterogeneous catalyst, taking monosaccharide, disaccharide or polysaccharide as raw materials, reacting for 5minutes to 24 hours in single-component solvent or double-component solvent such as dimethyl sulfoxide, acetonitrile, methyl isobutyl ketone, water and the like at the temperature of 25-120 DEG C under normal pressure, and finally producing the 5-hydroxymethylfurfural efficiently The method has the advantages that conversion efficiency of raw material is high, HMF selectivity is good, operation conditions are mild, reaction speed is high, the processing is simple and environment-friendly, the catalyst is easy to prepare and the like, corrosion to equipment and environment pollution due to common liquid strong-acid homogenous catalysts are avoided, and a new way is developed for preparing commodity chemicals and substitute fuels according to regenerative biological resources

Method for producing bisphenol a

Abstract: A method for producing bisphenol A, which comprises: (1) a step wherein phenol and acetone are subjected to a condensation reaction using a reactor that is filled with a strongly acidic cation exchange resin catalyst that is partially modified with a sulfur-containing amine compound, thereby producing bisphenol A and obtaining a reaction mixture liquid containing bisphenol A; (2) a step wherein a low-boiling-point component is separated from the reaction mixture liquid, thereby preparing a crystallization starting material containing concentrated bisphenol A; (3) a step wherein the crystallization starting material is cooled so that an addition product of bisphenol A and phenol is crystallized, thereby producing a crystallized product of the addition product of bisphenol A and phenol, and the crystallized product is separated from the reaction mixture liquid; and (4) a step wherein phenol is removed from the crystallized product and bisphenol A is collected. This method for producing bisphenol A also comprises: (R1) a step wherein water and phenol are separated from waste water, which contains phenol and is generated during the bisphenol A production process, using methyl isobutyl ketone, thereby extracting crude phenol; and (R2) a step wherein the crude phenol is purified by distillation, thereby obtaining phenol that has a sulfur concentration of 0.5 ppm by mass or less and a nitrogen concentration of 0.1 ppm by mass or less. The phenol obtained in the step (R2) is reused in at least one step among the steps (1)-(4).

Studies of densities, viscosities and ultrasonic speeds of binary mixtures containing isopropyl alcohol and ketones at different temperatures

Abstract: The densities, viscosities and ultrasonic velocities of binary liquid mixtures of Isopropyl alcohol with acetophenone and methyl isobutyl ketone (MIBK) have been measured at temperatures 298.15 and 308.15 K over the entire range of mole fraction. From these data, acoustical parameters such as adiabatic compressibility (β), free volume (Vf) and free length (Lf) have been estimated using the standard relations. The results are interpreted in terms of molecular interactions present in the mixtures.

Combustion of volatile organic compounds over composite catalyst of Pt/γ-Al₂O₃ and beta zeolite.

Abstract: Catalytic oxidation of volatile organic compounds (VOCs) was carried out over a composite catalyst comprising Pt/γ-Al₂O₃ and protonated beta zeolite. The conversion of several VOCs such as ethyl acetate, butyl acetate, 2-propanol, 1,2-dichloroethane, and chloroethane over the composite catalyst was higher than the conversion over the conventional Pt/γ-Al₂O₃ catalyst, indicating a remarkable improvement in the oxidation activity of the composite. On the other hand, no difference in the conversion of methyl ethyl ketone, methyl isobutyl ketone, toluene, benzene, and chloroethylene was observed for the composite catalyst versus the Pt/γ-Al₂O₃ catalyst. To clarify the role of the zeolite component, the reaction products obtained using the composite catalyst were compared with those obtained using the Pt/γ-Al₂O₃ catalyst. For the cases in which considerable improvement in the oxidation activity was observed with the composite, it was revealed that the conversion of VOCs to intermediate compounds took place over the acidic sites of the zeolite; the intermediates tended to be easily oxidized to CO₂ on the Pt/γ-Al₂O₃ catalyst. In addition, the composite catalyst also exhibited high durability. High catalytic activity was maintained even after aging at 600°C for more than 1000 h.

Combined production method of isopropanol and methyl isobutyl ketone

Abstract: The invention relates to a combined production method of isopropanol and methyl isobutyl ketone. The combined production method is shown as follows: acetone and hydrogen are used as raw materials, a non-noble metal catalyst especially a catalyst produced by Beijing research institute of chemical industry and with a brand number of BC-A-60 is used, the isopropanol and the methyl isobutyl ketone are simultaneously and combinedly produced under the reaction conditions of the reaction temperature of 170-230 DEG C, the reaction pressure of 1.0-6.0 MPa, the acetone liquid phase space velocity of 0.5-3.0 h and the hydrogen ketone molar ratio of 0.3-1. The combined production method has the following advantages that the low-cost non-noble metal catalyst is used, the technological process is simple and reasonable and low in energy consumption, two products of the isopropyl alcohol and the methyl isobutyl ketone are simultaneously and combinedly produced, wherein a gap of supply and demand of the isopropyl alcohol and the methyl isobutyl ketone is existed in markets, and by-product heavy components are few.

Phloroglucinol wastewater recovery treatment technology

Abstract: The invention discloses a phloroglucinol wastewater recovery treatment technology which comprises the following main steps of: using methyl isobutyl ketone to extract phloroglucinol wastewater to obtain a methyl isobutyl ketone solution containing organic substances such as phloroglucinol, and an inorganic aqueous solution containing potassium chloride, distilling the methyl isobutyl ketone solution containing the organic substances such as phloroglucinol to reclaim a methyl isobutyl ketone extraction agent and to obtain phloroglucinol, and performing evaporation and salt separation on the inorganic aqueous solution containing potassium chloride to obtain byproduct potassium chloride and the remaining wastewater. A weight ratio of the methyl isobutyl ketone extraction agent to the phloroglucinol wastewater is (10-30):1000. According to the phloroglucinol wastewater recovery treatment technology, reclamation rates of phloroglucinol and potassium chloride are above 90%; the extraction agent and condensing water can be recycled; phloroglucinol and potassium chloride can be refined by the phloroglucinol wastewater; and economic effects are remarkable.

High-gloss high-weather-resistant acrylic acid paint

Abstract: The invention provides high-gloss high-weather-resistant acrylic acid paint and belongs to the technical field of paint. The paint comprises, by weight, 50-65% of acrylic resin, 3-5% of aldehyde ketone resin, 3-5% of chlorcosane, 3-20% of pigment, 5-10% of extender pigment, 5-8% of glass flake powder, 0.1-0.3% of flatting agents, 0.2-0.5% of dispersants, 0.5-1% of anti-settling agents and 10-20% mixed solvent. Toluol, xylene, butyl ester, ethyl ester, butanone, methyl isobutyl ketone (MIBK), 2-ethoxyethyl acetate (CAC), ethylene glycol monobutyl, dibasic ester (DBE), butanol, isopropanol and ethanol are mixed in any proportion to form the mixed solvent. The paint has quick drying, high gloss, leveling property, fullness, weather resistance, vividness and anti-corrosive resistance. The paint has good adhesive force for all types of metal elements and all types of primer.

Combustion-supporting additive for improving flame temperature of natural gas

Abstract: The invention provides a combustion-supporting additive for improving flame temperature of natural gas. The combustion-supporting additive is characterized by being prepared by selecting the following raw materials by proportion: 10 to 30% of n-butyl alcohol, 10 to 20% of isopropanol, 10 to 20% of ethanol, 8 to 15% of acetone, 8 to 15% of isobutanol, 10 to 15% of butyl octanol, 5 to 10% of trimethyl carbinol, 5 to 8% of methyl isobutyl ketone, and 1 to 5% of methyl tertiary butyl ethe; sequentially adding the raw materials to a mixing container; feeding the mixed organic combined raw materials into a stirring system through a pipeline; standing for 48 hours after the stirring; detecting the safety; packaging into a packaging barrel; and adding the combustion supporter to the natural gas in the pipeline based on the ratio through an adding pump, so as to form efficient mixing gas. The combustion-supporting additive has the beneficial effects that the flame frequency and the wavelength are stable, no 'three wastes (the waste gas; waste water; industrial residue)' are generated in production, the tempering not occurs, high safety coefficient is achieved, no poisonous gas such as phosphide, sulfide and carbon monoxide is generated, the emission of CO2 is greatly reduced, the energy conservation is realized as well as high efficiency, and the mixed gas prepared from the natural gas with the combustion supporter added is lower in use cost.

Preparation method of furfuraldehyde

Abstract: The invention discloses a preparation method of furfuraldehyde. The method comprises the following step of: on the basis of taking lignocelluloses biomass containing xylanunit as a raw material, reacting an ion liquid phase/organic phase dual-phase reaction system with the raw material taking aluminum chloride as a catalyst, wherein the ion liquid phase in the dual-phase reaction system is a choline chloride-adipic acid mixed solution, and the organic phase is methyl isobutyl ketone. The preparation method has the following advantages: in the preparation method, the ion liquid phase/organic phase dual-phase reaction system is adopted; steam is not consumed; no wastewater is discharged; the organic phase and the ion liquid phase can be recycled; the production energy consumption can be greatly reduced; the yield and selectivity of the furfuraldehyde are improved; the AlCl3.6H2O is used as the catalyst; the reaction speed can be quickened; the production cost is saved; corrosion of a reaction solution on equipment can be significantly reduced; the ion liquid adopted in the preparation method is environmental-friendly and cheap; the preparation process does not need other medium; and 100% of reaction quality efficiency can be achieved.

Method for manufacturing hard coat film

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a hard coat film having high transparency and improved scratch resistance with excellent productivity such that the function performed by forming a plurality of layers in the conventional film can be imparted by a single layerSOLUTION: The method for manufacturing a hard coat film is characterized by including applying a coating composition of a hard coat layer including at least components (A) to (C) as given below and the coating composition to a transparent substrate film and then curing and drying the composition to form a localized layer containing 50 mass% or more of metal oxide fine particles contained in the hard coat layer in the region of less than 1/2 L in the thickness direction from the side opposite to the transparent substrate film, where the total thickness of the hard coat layer is L Component (A) is a metal oxide fine particle having an average particle size of 10 to 100 nm; component (B) is an ionizing radiation curable resin; and component (C) is an organic solvent including at least a ketone selected from methyl ethyl ketone, acetone and methyl isobutyl ketone and an alcohol

Spectrophotometric determination of anionic surfactants in seawater and environmental water samples by solvent extraction using the mixed solvents of mibk-edc

Abstract: PURPOSE: A spectrophotometric quantitation of an anionic surfactant is provided to reduce analysis time to 1/3, the dose of a solvent to 1/2, and the size of an analysis container to 1/2, thereby largely reducing analysis time and cost. CONSTITUTION: A spectrophotometric quantitation of an anionic surfactant comprises the steps of: adding a pretreatment reagent, a methylene blue (MB) solution, and a mixture (MIBK-EDC) of methyl isobutyl ketone and 1,2-dichloroethane to seawater or an environmental water sample and mixing and incubating the primary mixture; removing an aqueous layer from the incubated mixture, adding primary washing water, and mixing and incubating the secondary mixture; adding secondary washing water and mixing and incubating the tertiary mixture; removing an aqueous layer from the tertiary mixture and filtering the remaining liquid; and measuring absorbance of the remaining liquid. [Reference numerals] (AA) Sample; (BB) Pretreatment reagent; (CC) Extraction (Mixing/Incubation); (DD,GG,JJ) Remove an aqueous layer; (EE) Primary washing water; (FF,II) Washing(Mixing/Incubation); (HH) Secondary washing water; (KK) 1ps filter paper; (LL) Filter; (MM) Measure absorbance

Modified phenol aldehyde amine low-surface-treatment paint composition and preparation method thereof

Abstract: The invention relates to a modified phenol aldehyde amine low-surface-treatment paint composition and a preparation method thereof The modified phenol aldehyde amine low-surface-treatment paint composition comprises a component A and a component B in a ratio of 4:1, wherein the component A is composed of 20-25% of 6101 resin, 05-1% of methyl isobutyl ketone, 10-20% of dimethylbenzene, 2-4% of methylbenzene and the like; and the component B is composed of 80-90% of 3118 curing agent, 2-5% of butanol and 10-15% of dimethylbenzene The preparation method comprises the following steps: grinding iron red powder, zinc chrome yellow and the like in a grinder; adding butanol, methyl isobutyl ketone and the like, and evenly stirring to obtain a solution A; adding mica powder, silicon micropowder and the like into the solution A, and stirring for half an hour; and proportionally adding 3118 curing agent, butanol and dimethylbenzene into a tank, and stirring for 15 minutes The paint composition has the advantages of strong adhesive force, climatic change resistance, corrosion resistance and other comprehensive properties, and effectively solves the problems that the surface treatment of the traditional low-surface-treatment paint can not achieve Grade Sa25 and the adhesive force is weak

Environment-friendly coating

Abstract: The invention discloses an environment-friendly coating, which comprises the following raw materials in part by weight: 2-3 parts of probucol ester, 3-5 parts of calcium carbonate, 3-6 parts of polyvinyl ether, 2-8 parts of methyl isobutyl ketone, 4-7 parts of polyvinyl alcohol, 1-3 parts of thickener, and 30-40 parts of water. The environment-friendly coating is long in antirust time, nontoxic, free of environmental pollution, and harmless to human.