442 results about "Solvent" patented technology

The invention provides polyaniline-graphene composite based anticorrosive paint and a preparation method thereof. The polyaniline-graphene composite based anticorrosive paint comprises, by weight, 20-90 parts of film former, 0.1-20 parts of polyaniline-graphene composite, 1-10 parts of pigment, 1-10 parts of filler, 0.1-3 parts of sag-proof agent, 0.1-4 parts of dispersant, 0.01-2 parts of flatting agent, 0.01-2 parts of defoaming agent, and 1-50 parts of solvent. The paint has good physical anticorrosion as graphene is high in radius-thickness ratio and high in flexibility and has electromechanical anticorrosion by the aid of polyaniline loaded on the surface of the graphene, and under synergism of the polyaniline and the graphene, the paint has fine metal corrosion resistance. The anticorrosive paint achieves passivation and corrosion inhibition of metal substrates, avoids use of heavy metals causing environmental pollution, such as chromium and the like, and is simple to prepare, low in cost and easy in industrial batch production.

A general method and apparatus for treating materials at high speed comprises the steps of dissolving a relatively high concentration ozone gas in a solvent at a relatively low predetermined temperature T1 to form an ozone-solvent solution with a relatively high dissolved ozone concentration, and heating either the ozone-water solution or the material to be treated or both, the ozone-solvent solution and the material to be oxidized with a point-of-use heater to quickly increase the temperature to a predetermined higher temperature T2>T1, and applying the ozone-solvent solution to said material(s) whereby the heated ozone-water solution will have a much higher dissolved ozone concentration at said higher temperature, than could be achieved if the ozone gas was initially dissolved in water at said higher temperature.

Low viscosity biodegradable polymer solutions of a liquid biodegradable polymer and biocompatible solvent and methods of using the compositions to form a liquid polymer implant are provided.

A polymer resin composition, a method for forming a pattern using the polymer resin composition, and a method for fabricating a capacitor using the polymer resin composition are disclosed. The polymer resin composition includes about 75 to 93 percent by weight of a copolymer prepared from benzyl methacrylate, methacrylic acid, and hydroxyethyl methacrylate; about 1 to 7 percent by weight of a cross-linking agent; about 0.01 to 0.5 percent by weight of a thermal acid generator; about 0.01 to 1 percent by weight of a photoacid generator; about 0.00001 to 0.001 percent by weight of an organic base; and a solvent.

A method for preparing compositionally graded metallic plates and compositionally graded metallic plates suitable for use as interconnects for solid oxide fuel cells are provided. The method of the invention, utilizing powder metallurgy, enables making metallic plates of generally any desired composition to meet the corrosion requirements of fuel cells and other applications, and enables making metallic plates of graded composition from one surface of the plate to the other. A powder of the desired alloy composition is obtained, then solvents, dispersants, a plasticizer and an organic binder are added to form a slip. The slip is then formed into a layer on a desired substrate that can be flat or textured. Once dried, the layer is removed from the substrate and the binder is burned out. The layer is sintered in a reducing atmosphere at a set temperature for a predefined duration specific to the materials used and the desired final properties.

The invention provides a high strength organic / inorganic nano composite film layer materials and method for preparation, wherein the composition comprises 10-13% of titanate, 7-17% of silicane coupling agent, 0-6% of silicate ester, 40-65% of alcohol solvent and 1-4% of water. The preparation of the composition consists of using inorganic acid as catalyst, co-hydrolyzing titanate, silicate and silane coupling agent in dimethyl carbinol, coating the obtained paint by rotary, dipping or spraying methods onto the surface of the appliances, finally solidifying 1-3 hours at 135- 150 deg. C.

The low carbon olefin and arene producing process includes the following steps: hydroprocessing material oil to obtain hydrogenated tail oil; catalytically cracking and separating catalytically cracked oil and gas to obtain C2=-C3=, C2o-C3o, C4-C5, naphtha, LCO, etc.; returning C4-C5 to catalytical cracking, returning LCO to hydroprocessing, selectively hydrogenating and solvent extracting naphtha to obtain raffinate oil and arene as one target product; steam cracking raffinate oil, hydrogenated C2o-C4o, hydrogenated naphtha and cracked C2o-C3o and separating reacted oil and gas to obtain C2=-C3=, C2o-C3o, C4-C5, naphtha, etc.; returning C2o-C3o to steam cracking, and returning C4-C5 to catalytical cracking. The producing apparatus includes hydroprocessing unit, atalytically cracking unit, steam cracking unit, selectively hydrogenating unit and solvent extracting unit. The present invention produces low carbon olefin with heavy material and has propylene yield over 30 wt% and co-produced toluene, etc.

The invention relates to a method for preparing an organic starch ester. The method comprises mixing a starch material with an ionic liquid solvent to dissolve the starch, and then treating the dissolved starch with an organic esterifying agent to form an organic starch ester, and subsequently separating the organic starch ester from the solution. Microwave irradiation and/or pressure can be applied to assist in dissolution and esterification.

The present invention provides a process for forming a bulk monocrystalline gallium nitride by using supercritical ammonia. The process comprises the steps of forming a supercritical solvent containing ion or ions of alkali metals in an autoclave; and dissolving a monocrystalline gallium nitride prepared by flux methods as a feedstock in this supercritical solvent to form a supercritical solution, and simultaneously or separately recrystallizing gallium nitride on the face of a seed.

A flux without halogen, rosin and washing for Pb-free solder contains activating agent (8.0-15.0 Wt %), cosolvent (28-40), filming agent (0.1-1.0), corrosion retardant (0.1-0.5) and the solvent and deionized water (rest).

The invention discloses a stink and odor removal liquid with sterilizing plants, and a preparation method and an application thereof. The stink and odor removal liquid includes, by weight, 0.05-7% of a phenol bactericide, 2-50% of a plant extract, 2-10% of plant essential oil, 1-20% of an emulsifier, 2-20% of a solubilizer, and 10-90% of deionized water. The stink and odor removal liquid, when removes stink and odor, can kill harmful bacteria, such as escherichia coli, staphylococcus aureus and candida albicans, which generate the stink and odor, so that the stink and odor are removed from the source. The stink and odor removal liquid is mainly used in resident living environment and industrial production environment such as family, hospital, livestock farms, chemical engineering plants, garbage transfer station, kitchen wastes and the like. The preparation method of the stink and odor removal liquid includes the steps of uniformly stirring the components to obtain a mixture liquid and adding the deionized water to the mixture liquid with stirring for 10-30 min. The preparation method is simple and only needs simple stirring, employs simple equipment and saves production cost.

The present invention is an ink set for ink-jet recording using at least two kinds of inks comprising a first ink containing at least a pigment, a water-soluble solvent and water, and a second ink containing at least a pigment, a coagulant, a water-soluble solvent and water and having the absolute value of ζ-potential of not less than 10 mV. The present invention also provides an ink-jet recording method using the ink set for ink-jet recording, wherein an image is formed by applying the first ink and second ink on a recording medium so as to contact to each other. The present invention further provides an ink-jet recording apparatus comprising a recording head for ejecting at least the first ink and second ink.

The invention relates to a propellant for fireworks and crackers. The propellant is prepared from the following four raw materials: potassium perchlorate, potassium hydrogen terephthalate, charcoal powder and an adhesive, wherein the adhesive is glutinous rice flour or phenolic resin. The propellant is prepared by the following steps: mixing: by mass percentage, the four raw materials are put into a gunpowder machine and are uniformly mixed to obtain mixed chemical powder; and prilling: the well mixed chemical powder is added into a solvent and is kneaded into powder balls, and the powder balls are made into small spherical particles by a sugarcoating machine or rubbed into small particles by a screen mesh, and then the propellant for the fireworks and crackers is obtained by drying in the sun. A finished product of the propellant for the fireworks and crackers is prepared from the four raw materials and by the two processes of mixing and prilling, the production technology is simple, ball milling, tabletting, crushing and other processes in which exploding is easy to occur can be omitted, and the safety performance of the propellant is greatly improved. The propellant has the advantages of low hygroscopicity, stable performance, long shelf life, small shot noises, high shot height, small lateral force, low production cost and less use amount, and has obvious price advantage.

The invention discloses a method for synthesizing gemini long chain alkyl quaternary ammonium salts by enabling long chain alkyl tertiary amine mixture to be reacted with dibromo hydrocarbon or epoxy chloropropane and an application as a drag reduction and energy conservation agent of a circulating water system. The method comprises the following steps: stirring and dissolving the long chain alkyl tertiary amine mixture in an organic solvent, and heating to reflux temperature; slowly adding dibromoethane or epoxy chloropropane for generating mixture of asymmetric and symmetric gemini long chain alkyl quaternary ammonium salts; stopping the reaction when the tertiary amine conversion rate is above 75%, and performing vacuum evaporation for recovering the solvent; and using deionized water to dissolve distillation products, and oxidizing the non-converted raw material to tertiary amine oxide with hydrogen peroxide at the temperature of 60-80 DEG C. A gemini quaternary ammonium salt surfactant is used as main molecules of the drag reduction agent, an organic acid corrosion inhibitor is used as auxiliary ions, the molar ratio of the main molecules to the auxiliary ions is 1: (2.4-6.0), then the drag reduction agent which is applicable to the range of 5-95 DEG C is prepared, and the drag reduction efficiency of the drag reduction agent to the circulating water system achieves 40%-70%, and the corrosion inhibition efficiency achieves 60%-95%. By adopting the gemini long chain alkyl quaternary ammonium salt surfactant, the problems of strong corrosion, great irritation and a narrow range of applicable temperature of the traditional long chain alkyl quaternary ammonium salt surfactant can be overcome.

The invention relates to a method to separate temperate coal race component based on the extract and the stripping, which belongs to the separating method of the coal race component. Join the component solvent into the coal sample, agitate it and obtain the extract liquid-solid mixture; Carries on the liquid-solid separation to the extract liquid-solid mixture, obtains the extracted liquid and the gathering excess separately; To gathers the excess water used wash, then the vacuum drying, obtains gathers -odd coal; Joins the stripping medicinal preparation in the extracted liquid, the agitation, obtains the stripping liquid-solid mixture and carries on the liquid-solid separation to it, obtains the solid matter and the wet goods; To solid matter water used wash, dry, obtains the refined coal; The wet goods are two laminations: To a lamination takes off resolve A with the atmospheric pressure distillation, carries on the stripping again to the surplus solution, will produce sticks the thick shape solid, carries on the drying process to it, obtains the caking component; Another lamination is mainly resolved B and the stripping medicinal preparation omnium-gatherum. We bench work skill process is simple, the extract and the stripping process is temperate, the resolved recycle, the reaction process is advantageous for the control, can cause the coal petroleum to separate Cheng Cuiyu the coal, the refined coal, the caking group to classify many kinds of unique race components equally in advance likely.

A method for producing a surface-treated silver-containing powder comprises vacuum freeze drying a dispersion liquid, which is obtained by dispersing silver or silver compound particles (a) in a solvent together with a surfactant (b) of an alkylamine type or an alkylamine salt type, or a phosphate type having a phosphorus content of 0.5 to 10% by mass so that the surfactant (b) is adsorbed in the surface of the silver or silver compound particles (a), thereby producing a silver-containing powder (c) whose surface is treated with the surfactant (b). Moreover, a silver paste is produced by dispersing the surface-treated silver-containing powder (c) in a solvent, or in a solvent with a resin.

The invention relates to a method for sealing holes of micro arc oxidation film at room temperature. Solution prepared with sodium silicate, nickel salt, solvent and accelerant is adopted as a sealant, after stewing for at least 2 hours, the sealant is adopted to seal the holes of micro arc oxidation film by soaking at room temperature, after sealing holes, the sealant forms an adsorption crystal packing in micro holes on the surface of the micro arc oxidation film so as to achieve hole sealing. The solvent is deionized water, and the ratio of sodium silicate, nickel salt and accelerant is as follows: 5-15 g/L of sodium silicate, 2-8 g/L of nickel salt and 0.1-2 g/L of accelerant. The sodium silicate is sodium metasilicate pentahydrate or sodium metasilicate. The nickel salt is nickel fluoride, nickel acetate or the mixture of the two. The accelerant is boric acid, thiourea, zirconium potassium fluoride or the mixture thereof. The solution of sealant provided by the invention can be used without heating, and the hole sealing can be performed at room temperature, which is easy and simple and has good hole sealing effect without any effect to the hardness of ceramic membrane. Meanwhile, the corrosion resistance of ceramic membrane can be improved.

A method of melt infiltration for producing a ceramic matrix composite comprises applying a surface slurry onto one or more outer surfaces of an impregnated porous preform. The surface slurry comprises a solvent and particulate solids, and the preform comprises a framework of ceramic fibers loaded with particulate matter. The surface slurry is dried to form a porous layer comprising the particulate solids on the one or more outer surfaces of the impregnated porous preform. After forming the porous layer, an end portion of the impregnated porous preform that includes at least part of the porous layer is immersed in a molten material, and the molten material is infiltrated into the impregnated porous preform from the end portion. The porous layer serves as a wick to transport the molten material over the one or more outer surfaces, thereby enabling melt infiltration of the impregnated porous preform from other portions thereof.

The invention belongs to a material used for preparing printed circuit board, more specifically a resin combination and a prepreg used for preparing the printed circuit board. The resin combination uses phenoxy resin, epoxy resin composition, epoxy thinner, amine curing agent, imidazole enhancer and solvent as materials and is prepared in accordance with a certain weight, then the resin combination solution is immersed in glass fiber cloth to make the prepreg. Non-flowing character and the wetting quality of the glass fiber cloth are improved because of the excellent formula of the resin combination, thereby the prepreg used for the printed circuit board has a better non-flowing character, and moisturizing capability, heat resistance, flame retardant, high connectivity with copper foil, and provides high performance material for the printed circuit board product which has a special structure and flexibility-combines with steel.

The invention discloses a preparation method of nemadectin. According to the invention, a fermentation broth used for producing nemadectin is directly dried by spraying, such that solid powder is obtained; the solid powder is extracted by using an organic solvent, the extract is filtered, and nemadectin in the extract is absorbed by using macroporous resin; nemadectin absorbed by macroporous resin is then eluted; and the eluent is extracted, concentrated, and dried, such that a nemadectin pure product is obtained. According to the invention, a direct spray-drying method is adopted upon the fermentation broth, and the obtained dried solid fermentation bacterium powder is transportation-tolerant, and is easy to store. With the method provided by the invention, the producing of nemadectin degradation product is reduced, the bacterium powder is easy to extract, and the consumption of the extraction solvent is low. The technology is simple, the cost is low, and the method is easy to operate. With the method, the prepared nemadectin has a high HPLC purity of above 90%.

The invention relates to explosion-proof vacuum pressure impregnated insulation device and its process which is used in high-tension motor winding loop impregnated insulation paint, it characterized in that: condensator connected with refrigerator is set on the vacuum tube between the impregnating vessel and vacuum set, and collecting vessel is set on bottom of the impregnating vessel, one end of the collecting vessel is connected with the impregnating vessel, the another end is connected with the paint pipelines of storing vessel via transferring valve and returning valve. Using the device and the process, the remained insulation paint and dissolvent in the impregnating vessel can be solved, when the vacuum set vacuumizes the impregnating vessel, the explosive fuel phenylethene deflocculating agent can not be sucked to the vacuum set to gel and jam, it possesses practical effects of explosion-proof, safe reliability, saving raw material.

The invention discloses a phenol ortho-methylation catalyst and a preparation method thereof. The catalyst is an alkaline Fe/Mg compound oxide, wherein, the mol ratio of Fe to Mg is 1: (0.1-2). The preparation method comprises the following steps: mixing and dissolving soluble malysite and soluble magnesium salts into alcohols solvent according to a required proportion to prepare a solution A; adding polyethyleneglycol (PEG) into strong aqua ammonia to prepare a solution B; slowly mixing the solution A and the solution B in a cocurrent flow mode under the condition of normal temperature and ultrasound, and then going on with the ultrasound for 30 minutes; filtering, washing, drying and baking the obtained precipitation; porphyrizing the baked solid and repulverizing the solid into 10-20 mesh finely ground particles after tabletting; the finely ground particles are the catalyst. The catalyst has the advantages of high activity at low temperature, simple preparation, innocuity, good stability, high selectivity of ortho position, particularly high selectivity of orthocresol and few by-products.

The present invention belongs to the field of ink, and in particular relates to highly wear-resistant PU ink for silicone rubber surface. The raw materials comprise hydroxyl-terminated polyurethane resin, curing agent, and mixed solvent. Moreover, the raw materials still comprise wear-resistant additives. The wear-resistant additives can be one of or the mixture of a plurality of polytetrafluoroethylene, polypropylene, polyethylene, polyethylene oxide, zinc oxide, alumina oxide, iron oxide, zirconium oxide, magnesium oxide, calcium carbonate, talc, silica aluminum, and magnesium silicate. With the proposal of the present invention, the suitable polyhydroxylated PU resin, curing agents and filler are used to prepare PU ink for silicone rubber of convenient construction, reduction of priming payer of middle coating, good adhesion and excellent wear resistance.