897 results about "Methyl isobutyl ketone" patented technology

The invention relates to a new synthesis route of a liquid branched paraffin fuel, the method adopts a lignocellulose based platform compound as a raw material and is completely independent of fossil energy. The liquid fuel obtained by the method can be used as an aviation kerosene (or diesel) substitute or as an additive to increase the cetane number and cold resistance of fuel. The method provided by the invention includes two steps of: 1) under the promotion of a base catalyst, subjecting a lignocellulose based furfural compound (including furfural, methylfurfural or 5 hydroxymethylfurfural) and branched chain keto (including methyl isobutyl ketone, and mesityl oxide, etc.) to aldol condensation reaction so as to synthesize an oxygen-containing organic compound with a carbon chain length of 9-16; and 2) conducting hydrodeoxygenation on the aldol condensation product generated in step1 to obtain biomass aviation kerosene branched hydrocarbon with a carbon chain length of 9-16, higher energy density, stability and low freezing point.

This invention relates to a method to dispose and recycle coal-gasification sewage containing high-concentration hydroxybenzenes, which includes following steps: a) acid removal; b) hydroxybenzene removal by extraction; c) regeneration of extraction solvent; d) ammonia recycling and rudimental extraction solvent recycling. The extraction solvent is isobutyl methyl ketone. After disposal with this method, more than 92% hydroxybenzenes and 99.5% ammonia can be recycled from the sewage. The extractant can be regenerated by distillation separation. The regenerated extractant is high purified and can meet the requirement of circulative extraction. Besides, while hydroxybenzenes, especially polyphenols are effectively recycled, CODCr of the sewage is also greatly lowered, which is benefic to sewage biochemical standardization.

The invention discloses a plastic paint with simulated electroplating effect. The composition and the weight ratio of the invention are as follows: 30 to 45 of acrylic resin with 50 percent of solid content and 70 to 90 DEG C of Tg, 20 to 30 of cellulose acetate butyrate with 20 percent of solid content, 8 to 12 of triad copolymer vinyl chloride-acetate resin with 30 percent of solid content, 6 to 10 of non-floating aluminum and silver pulp with an average diameter less than or equal to 20 Mum, 0.3 to 0.5 of dispersant, 0.2 to 0.4 of flatting agent, 0.4 to 0.6 anti-settling agent, 6.0 to 10.0 of toluene, 3.5 to 6.0 of ethyl acetate, 3.5 to 6.0 methy isobutyl ketone, 3.0 to 5.0 of isobutanol and 4.0 to 7.0 of glycol butyl ether. The special diluent of the invention, according to the weight ratio, is made from the following components evenly mixed: 20 of white gas, 10 of toluene, 22 of ethyl acetate, 15 of acetone, 25 of isobutanol and 8 of glycol butyl ether. The main paint which comprises the composition and the diluent are evenly mixed according to the ratio of 1: 2-3, then the mixture is used for spray coating; the metallic appearance of the paint film obtained is very close to the effect of the electroplating, and the paint film has good alcohol resistance with high hardness and strong wear resistance, and also has simple process. The aluminum and silver pulp used is a common type, the cost of which is only 5 percent to 10 percent of the simulated electroplating aluminum and silver pulp and about 2 percent of electrosilvering.

The invention discloses a method for preparing a p-phenylenediamine rubber aging inhibitor, and relates to the technical field of chemical synthesis. The method comprises the following steps of: adding 4-aminodiphenylamine and partial methyl isobutyl ketone into a condensation reaction kettle, performing condensation reaction at a certain temperature under certain pressure, removing water generated by the reaction, and obtaining a condensation solution; adding the condensation solution, a hydrogenation catalyst and replenished methyl isobutyl ketone into the reaction kettle, performing hydrogenation reaction at a certain temperature under certain pressure, and obtaining a hydrogenation solution; and performing post treatment on the hydrogenation solution to obtain the p-phenylenediamine rubber aging inhibitor 4020, wherein the hydrogenation catalyst is a nickel, palladium or platinum catalyst. From the practice of industrial production, the rubber aging inhibitor 4020 is synthesized by adopting two-step reaction of condensation and hydrogenation; the difficulty of the hydrogenation reaction is reduced; and the requirement on the catalyst is reduced. The method has mild reaction conditions, high product quality and simple flow and no pollution, and is easy to realize industrialization.

The invention relates to a preparation method of a catalyst for coproducing isopropanol and methyl isobutyl ketone by acetone hydrogenation. The catalyst comprises an alumina carrier and Ni and Mg loaded on the gamma-Al2O3 carrier, and particularly comprises, by total weight, 10-18% of the Ni, 3-8% of the Mg and the balance alumina; and the BET specific surface area of the catalyst ranges from 100m<2>/g to 180m<2>/g, and the pore volume of the catalyst ranges from 0.35mL/g to 0.55mL/g. The preparation method includes steps of (1), preparing the carrier by details of weighing pseudo-boehmite powder, adding binders and extrusion assistants into the pseudo-boehmite powder, forming by strip extrusion or granulating by rotation, drying and calcining, cooling to reduce temperature so as to obtain the stripped or spherical carrier; (2), impregnating the carrier into magnesium nitrate by details of loading a magnesium additive onto the carrier by means of saturated impregnation, drying and then calcining for 2-6 hours at the temperature ranging from 400 DEG C to 500 DEG C; (3), loading the actively metallic nickel by details of impregnating for 10-24 hours and calcining for 2-6 hours at the temperature ranging from 350 DEG C to 480 DEG C; and (4), loading the actively metallic nickel again by details of drying a semi-finished product, impregnating the dried semi-finished product into impregnation liquid of nickel nitrate again, repeating the step (3) once, and calcining the semi-finished product for 2-4 hours at the temperature ranging from 400 DEG C to 450 DEG C so as to obtain the finished catalyst.

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.

The invention discloses a method for preparing a Ni/MgO-Al2O3 catalyst for coproduction of methylisobutylketone and diisobutylketone, and relates to a chemical solvent. In the method, a Pd/MgO-Al2O3-ZrO2 catalyst is used, the catalyst consists of 4 weight percent of Ni, 53 weight percent of MgO and 43 weight percent of Al2O3, and the catalyst is prepared from a reconfigured NiMgAl hydrotalcite-like compound at the reaction temperature of between 150 and 240 DEG C at the liquid space velocity of 2.4 to 4.8 ml/gcat.h in a molar ratio of hydrogen to ketone of 0.5-2; and in a fixed bed reactor, the conversion rate of acetone is 30 to 56 percent, and the selectivity of the methylisobutylketone reaches 57 to 69 percent. Ni<2+> of the Ni/MgO-Al2O3 catalyst prepared by a reconfigured hydrotalcite-like method is mainly distributed on the surface of the catalyst, is easy to reduce, is used in the reaction of synthesizing MIBK by an acetone gas phase one-step method, and has high catalytic performance.

The invention relates to a weather resistant epoxy-polyurethane anti-corrosion coating and a manufacturing method thereof, which adds phenol-A epoxy resin, bisphenol-F epoxy resin, hydroxyl contained saturated polyester resin and fluorocarbon resin into the mixed solvent of dimethylbenzene, n-butyl acetate, methyl isobutyl ketone and butanone; then adds rutile type titanium pigment, saponite, sericite in powder, polyacrylate co-polymer, polymethyl alkyl siloxane, benzotriazole, gas phase silica and iso-caprylic acid znic to make the fluid A of the weather resistant epoxy-polyurethane anti-corrosion coating while adds fatty group polyisocyanate into the mixed liquor of anhydro-dimethylbenzene and the n-butyl acetate to make fluid B, and mix the two components during application. The invention can be applied to the preservation of the surfaces of outdoor steel structures, pipes and concrete requiring weather resistance, light aging resistance and acid, alkali and salt corrosion resistance.

The invention relates to a tire of a structural combination of tire tread and sidewall components with compositional limitations containing minimal, if any, of in situ formed alcohol and methyl isobutyl ketone byproducts. The tread component rubber composition contains pre-hydrophobated silica reinforcement. The sidewall component contains low unsaturation EPDM or brominated copolymer of isobutylene and p-methylstyrene and may contain pre-hydrophobated silica reinforcement. The silica reinforcement for said tread and sidewall components is a pre-hydrophobated precipitated silica. The pre-hydrophobated silica is prepared, prior to mixing with the elastomer(s), by reacting hydroxyl groups (e.g. silanol groups) contained on the surface of a precipitated silica with an alkoxyorganomercaptosilane or a combination of an alkoxyorganomercaptosilane and a substituted alkylsilane or with a bis-3(trialkoxysilylalkyl) polysulfide which contains an average of from 2 to 4 connecting sulfur atoms in its polysulfidic bridge to form a composite thereof. The alcohol byproduct therefrom is removed from the composite prior to its introduction into the rubber composition(s). In another aspect of the invention, the connecting sidewall rubber composition, and optionally the tread composition is free of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine antidegradant (referred herein to as 6PPD) in order to prevent in situ formation of methyl isobutyl ketone byproduct from the reaction of 6PPD with atmospheric oxygen and/or ozone.

The invention discloses a phenolic-nitrile rubber hot vulcanized adhesive and a preparation method thereof. The adhesive consists of the following raw materials: crude nitrile rubber, phenolic resin, an inorganic filler, a vulcanizing agent, a tackifying resin, a coupling agent, an anti-aging agent and methyl isobutyl ketone. The preparation method comprises the following steps of: plasticating the crude nitrile rubber for 1 to 3 minutes on an open mill; sequentially adding the tackifying resin, the inorganic filler, the coupling agent, the anti-aging agent and the vulcanizing agent into the open mill for mixing; after plasticating the mixture, shearing the mixture; adding the sheared mixture into the methyl isobutyl ketone for swelling; after stirring and dissolving the mixture, obtaining a rubber slurry; and adding the phenolic resin into the rubber slurry to obtain the phenolic-nitrile rubber hot vulcanized adhesive after uniformly stirring the mixture.

The invention discloses a method for preparing cyclopentanol by hydrating cyclopentene. The method comprises the following steps: (1) performing addition reaction on cyclopentene and acetic acid under the action of modified sulfonic acid group cation exchange resin to produce cyclopentyl acetate, wherein the modified sulfonic acid group cation exchange resin is prepared by soaking the conventional sulfonic acid group cation exchange resin with methylbenzene and methyl isobutyl ketone sequentially; (2) enabling the material obtained in the step (1) to enter a rectifying tower, forming azeotrope with water on the lower part of the rectifying tower, performing hydrolysis reaction on the material and water under the action of a sulfonic acid group cation exchange resin catalyst filling the upper part of the rectifying tower, withdrawing a product cyclopentanol from the top of the tower and withdrawing acetic acid from the bottom of the tower. The method has the advantages of simple technical process, low energy consumption, high conversion rate, high selectivity, high product yield and the like.

The invention relates to high-salt-mist high-weather-proof water paint and a preparing method of the high-salt-mist high-weather-proof water paint. The high-salt-mist high-weather-proof water paint mainly comprises acrylic acid modified emulsion. The acrylic acid modified emulsion is composed of isobutyl alcohol, ethylene glycol monobutyl ether, methyl isobutyl ketone, vinylidene chloride, dodecafluoroheptyl methacrylate, perluorooctyl acrylate, vinyl trimethoxy silane, acrylic acid, methyl methacrylate, hydroxyethyl acrylate, phenylethylene, 2-ethylhexyl acrylate, azodiisobutyronitrile, N-methyl monoethanolamine and deionized water. The paint is quite excellent primer-topcoat coating and suitable for metal workpieces, the paint is dried at normal temperature after being sprayed, the appearance of a coating is smooth and bright, the leveling property is good, the mechanical property is good, the weather-proof property is excellent, after 2500 hours of QUV aging tests, the dulling rate is smaller than or equal to 15%, and delta E is smaller than or equal to 1.5, meanwhile, corrosion resistance is good, salt mist resistance reaches 1000 hours, and the one-way corrosion width is smaller than or equal to 2 mm.

The invention provides a production process of methyl isobutyl ketone. The production process includes the following steps that a, hydrogen is conveyed into a water mist catcher for water removal; b, hydrogen and acetone are mixed and conveyed into a reactor to react, an adopted catalyst is strong acid positive ion exchange resin treated through palladium acetate, a reaction product is subjected to water removal again through hydrogen obtained after condensation separation and reused in the reactor for the reaction; c, alkali is added to a condensation product solution; d, the product solution to which alkali is added enters an acetone light-component tower to be separated, a solution produced from the bottom of the tower enters an acetone recovery tower for rectification, negative pressure operation is conducted in the acetone recovery tower, acetone produced from the top of the tower is reused in a fixed bed reactor, coarse MIBK produced from the bottom of the tower enters a phase separator; e, the coarse MIBK enters an MIBK light-component tower for rectification, heavy components produced from the bottom of the tower enter a finished MIBK tower for rectification, and finished MIBK is produced from the lateral line of the finished MIBK tower. Thus, energy utilization is greatly reduced, and meanwhile safe and efficient production can be facilitated while the utilization rate of original raw materials is guaranteed.

The present invention discloses the preparation process of Pd/ resin catalyst, and is especially the preparation process of Pd/ resin catalyst for the one-step process to synthesize methyl isobutyl ketone. Pd-containing acid solution and resin are made to produce ion exchange to obtain the catalyst with high activity and high selectivity. The present invention has raised Pd utilization, and the catalyst may be used in hydroetherification of gasoline, synthesis of methyl isobutyl ketone with acetone and other reaction process.

the invention discloses a fluorine modified acrylic resin and preparing method for helicopter covering paint, which comprises the following steps: blending composite monomer methacrylic acid borneol ester, n-butyl methacrylate, hydroxyethyl methacrylate, butyl acrylate, methacrylic acid and fluorine monomer in the composite solvent with xylene, propylene glycol methyl ether acetic ester, methyl isobutyl ketone and 100# solvent oil; dripping carbonic glycide ester to polymerize acted by trigger pentaphen peroxide to obtain the product.

The invention discloses a continuous producing process of an anti-aging agent 4020, which has the advantages of stability and reliability in operation and high production efficiency. The process comprises the following steps of: adopting 4-aminodiphenylamine, methyl isobutyl ketone and hydrogen as raw materials; mutually preheating all raw materials by a preheater E101; enabling the preheated rawmaterials to enter a reactor; and carrying out catalytic hydrogenation reaction on the raw materials at a high pressure under the effect of a catalyst so as to obtain the anti-aging agent 4020, wherein the reactor is a gas-liquid-solid three-phase fixed bed hydrogenation reactor; the hydrogenation reaction is continuous operation carried out by using the gas-liquid-solid three-phase fixed bed hydrogenation reactor; the gas-liquid-solid three-phase fixed bed hydrogenation reactor comprises a main body container, a discharging opening, a completely discharging opening, a feed pre-distributor, an upper seal head, a lower seal head, an upper support, a lower support and a temperature measuring opening, wherein the feed pre-distributor is an exhaust pipe type pre-distributor which is mounted at the lower part of the main body container; the upper seal head is an elliptical seal head; and the lower seal head is also an elliptical seal head; and the temperature is 165-230 DEG C, the pressureis 5.5-6.0 MPa, the keto-amine ratio is 2-4:1 and the hydrogen-oil ratio is 2000-5000:1 during reaction.

The invention relates to a transfer printing ink with a release function. The transfer printing ink comprises, by weight, 16 to 25% of a polymethacrylate resin, 1.5 to 2.5% of a cellulose acetate resin, 7 to 30% of a pigment, 50 to 62.5% of a mixed solvent, 0 to 2% of an auxiliary agent, 0 to 1% of matt powder and 0 to 2% of wax powder, wherein the mixed solvent is a mixture of two or more selected from the group consisting of ethyl acetate, n-propyl acetate, isopropyl acetate, n-butyl acetate, toluene, butanone, methyl isobutyl ketone, isopropanol, propylene glycol monomethyl ether and propylene glycol monomethyl ether acetate mixed at any ratio, the auxiliary agent is one or a mixture of more selected from the group consisting of a dispersant, an antistatic agent and an organosilicon leveling agent, the matt powder is gas phase silica, and the wax powder is polymer micro wax powder. The transfer printing ink provided by the invention has all the properties of a traditional transfer printing ink, e.g., pigment concentration, brilliance and good printability and heat resistance, further has excellent release performance and can be used as a release agent in a transfer printing process.

A method of improving the combustion of a fuel by adding a catalyst or combustion enhancer at an extremely low concentration, preferably in the range of 1 part catalyst per 200 million parts fuel to 1 part catalyst per 6 trillion parts fuel. The catalyst or combustion enhancer may be selected from a wide range of soluble compounds. The method may comprise the steps of an initial mixing of the catalyst or enhancer with a suitable solvent and then subsequent dilution steps using solvents or fuel. Suitable solvents include water, MTBE, methylketone, methylsobutylketone, butanol, isopropyl alcohol and other hydrophilic/oleophilic compounds.