318 results about "N-Octyl Alcohol" patented technology

The invention relates to a method for precisely casting a titanium alloy and a titanium aluminum alloy with low cost, which relates to a method for precisely casting the titanium alloy and the titanium aluminum alloy, and solves the technical problem that cast pieces have low surface quality and internal quality in the conventional method for lowering the cost of precisely casting the titanium alloy and the titanium aluminum alloy by using electrically-fused alumina and silica sol. The method comprises the following steps of: preparing a surface layer binder from zirconium sol, silica sol, a wetting agent JFC, n-octyl alcohol, polyvinyl alcohol and latex; adding calcium carbonate, alumina, titanium dioxide and zirconia to prepare a surface layer coating; preparing a shell surface layer; preparing a shell back layer by a universal method for precisely casting the titanium alloy; dewaxing and sintering to obtain a shell; and casting the titanium alloy or the titanium aluminum alloy by using the shell so as to obtain a titanium alloy cast piece or a titanium aluminum alloy cast piece. Compared with a precise casting method by purely using a zirconium-based binder and a zirconia fireproof material, the method has the advantage that raw material cost is lowered by 30 to 70 percent and the method can be used for civil titanium alloy cast pieces and titanium aluminum alloy cast pieces for common aviation.

The invention relates to a centrifugal casting roller coating and a preparation method thereof. The centrifugal casting roller coating is characterized by comprising the following compositions in percentage by mass: 12 to 15 percent of zircon powder, 8 to 10 percent of quartz powder, 8 to 10 percent of bauxite, 0.3 to 0.6 percent of silica sol, 0.1 to 0.4 percent of sodium carboxymethyl cellulose, 0.15 to 0.35 percent of alkyl benzene sodium sulfonate, 0.15 to 0.35 percent of sodium sulfate, 0 to 0.02 percent of n-butyl alcohol, 0 to 0.02 percent of n-octyl alcohol, 0.10 to 0.18 percent of fatty alcohol polyethenoxy ether, and the balance being water, wherein the mass percentage of the zircon powder + the quartz powder + the bauxite is more than or equal to 30 percent and less than or equal to 35 percent, the mass percentage of the alkyl benzene sodium sulfonate + the sodium sulfate is more than or equal to 0.35 percent and less than or equal to 0.55 percent, and the mass percentage of the n-butyl alcohol + the n-octyl alcohol is more than or equal to 0.02 percent and less than or equal to 0.03 percent. The coating is used for centrifugal casting roller production after stirring, grinding and sieving, and has good use effect.

The invention discloses a full mold casting coating, which consists of the lower components in part by weight: 70-80 parts of quartz powder, 10-15 parts of olivine powder, 10-15 parts of alundum powder, 4-6 parts of sodium bentonite, 1-2 parts of lignosulfonic acid, 2-3 parts of dextrin powder, 0.8-1.5 parts of sodium carboxymethylcellulose, 0.4-0.6 part of sodium benzoate, 1-2 parts of hollow glass microsphere, 7-9 parts of aluminum sulfate, 4-6 parts of polyvinyl alcohol, 5-6 parts of silica sol, 0.5-0.8 part of brown iron oxide, 0.04-0.06 part of n-octyl alcohol and 15-25 parts of water.

The invention discloses a fireproof coating for a self-repairing type steel structure. The fireproof coating is prepared by taking the following materials as raw materials: epoxy modified waterborne polyurethane emulsion, melamino-formaldehyde resin microencapsulation ammonium polyphosphate, polyurethane microencapsulation inorganic substance grains, self-repairing microcapsule, hydroxyethyl cellulose, dispersing agent, defoamer, mildew preventive, n-octyl alcohol and water. The invention can effectively solve the problems of cracking, poor durability and poor waterproof property of the prior art; the fireproof coating has the advantages of large adhesive force with substrate, excellent fireproof performance, excellent surface decorative property, excellent corrosion resistance and excellent self-repairing function; and the preparation method provided by the invention is simple and is fit for popularization and application.

The invention discloses a manufacture method of white latex, which is composed of the following raw materials and components: 40-50 parts of poly(vinyl acetate), 3-6 parts of poly(vinyl alcohol), 3-5 parts of dibutyl phthalate, 0.5-2 parts of octanol, 0.1-0.5 part of ammonium persulfate and 40-50 parts of water. The manufacture method comprises: dissolving dibutyl phthalate in octanol, dissolving poly(vinyl acetate) in a 66-69 DEG C poly(vinyl alcohol) solution, mixing the above two solutions, then adding ammonium persulfate, and carrying out emulsion polymerization. In the manufacture method, non-toxic, odorless and non-corrosive poly(vinyl acetate) is used to replace toxic and irritant vinyl acetate, so that the white latex is safer and more healthy for human bodies and is a pollution-free environmentally-friendly product.

The invention discloses a theoretical prediction method for organic chemical n-octyl alcohol / air distribution coefficient (KOA) and belongs to the field of ecological risk assessment testing strategy. The method comprises the following steps of: establishing a quantitative structure-activity relationship (QSAR) based on a molecular Dragon descriptor of a compound and calculating free melting energy based on a thermodynamic principle by adopting an open source solvent model, and transforming to obtain the KOA according to a thermodynamic principle formula of logKOA=-deltaGOA / 2.303RT. A general strategy of predicting the KOA of the compound is provided based on the method, namely whether the molecule is in the application range is judged according to the Dragon descriptor, if so, a QSAR model is preferentially adopted (QSAR-T is adopted at different temperatures), otherwise, the compound is predicted by adopting an SM8AD solvent model. The method and strategy are adopted and accorded, the KOA of different compounds at different temperatures can be rapidly and effectively predicted, lots of manpower, material resources and financial resources are saved, and important essential data is provided for large-scale ecological risk assessment and environment supervision of chemicals.

There is provided an agrochemical formulation aid composition for preparing bioactive and sprayable agrochemicals, wherein various components for the composition were selected from mineral oil paraffinic distillate and / or aromatic hydrocarbon distillate; 2N-octanol; oleyl-cetyl; alcohol polyoxyethylene (2) oleylether; polyoxyethylene (8) nonylphenolethin and / or ethoxylated tallow amine blend; lauryl sulphate; fatty alcohol alkoxylate; terpenes, diammonium phosphate; tetrasodium ethylene diamine tetracetate; cab-o-sil; fatty acid methyl ester; (C18) free fatty acid blend; N-butanol; and methyl alcohol. Also provided are methods of preparing the formulation aid composition on site by mixing various components and methods of preparing sprayable and bioactive agrochemical systems using the formulation aid and non-formulated or formulated agrochemicals. Also provided are uses of the formulation aid in preparing sprayable and bioactive agrochemical systems for controlling pests.

The invention discloses polyvinyl chloride synthetic leather for a luggage. The leather comprises a surface layer, a foaming layer, a bonding layer and fluffing cloth. The surface layer is slurry prepared from the following raw materials in parts by weight: 40-50 parts of SG-3 PVC (Polyvinyl Chloride) resin, 70-80 parts of SG-5 PVC resin, 30-35 parts of glycerol triacetate, 10-15 parts of epoxidized soybean oil, 20-25 parts of glycerol triglycerate, 5-6 parts of PVC color cream, 1-2 parts of bimercapto iso-octyl acetate di-n-octyl tin, 5-10 pats of zinc oxide and 5-10 parts of modified attapulgite. Through improvement of formula and process provided by the invention, the flexibility of the synthetic leather is enhanced, and the synthetic leather has a natural and comfortable handfeel similar to that of natural leather. The synthetic leather is not easy to damage or tear within 3-5 years, and suitable for use in lug gages.

The invention discloses a reverse micelles method of preparing platinum ruthenium / carbon catalyst, which includes the following steps: 0.02 to 0.10mol / L chloroplatinic acid aqueous solution and 0.04 to 0.20 mol / L ruthenium trichloride aqueous solution are prepared to form water phase; hexamethylene is prepared into oil phase, sodium laurylsulfate is taken as surfactant and n-octyl alcohol is taken as cosurfactant; the mass ratio of sodium laurylsulfate, hexamethylene and n-octyl alcohol is 1:0.07 to 0.15:0.5 to 1.2; the product is mixed and added in carbon black, and the receives ultrasonic vibration and mechanical mixing for 20 to 60 min, so that a reverse micelle is loaded on the carbon black; a reducing agent, demulsifier acetone and solution are added for filtration and drying. The reverse micelle of the invention provides a micro environment, and can become an ideal place of nano particle synthetization. Because of the method of preparing nano particles, only simple equipments are needed, the operation is under room temperature, the metal particles have grain size which is easy to be controlled and spread quite evenly.

The invention belongs to the technical field of preparation of an ultrahigh-temperature ceramic, and particularly relates to a preparation method of a lamellar silicon carbide / zirconium carbide ultrahigh-temperature ceramic. The preparation method comprises the following steps of: preparing a silicon carbide tape-casting sheet and a zirconium carbide tape-casting sheet by adopting a tape-casting method; then alternately stacking the silicon carbide tape-casting sheet and the zirconium carbide tape-casting sheet; then carrying out glue discharge and vacuum sintering. According to the preparation method, the usage amounts of polymethyl methacrylate, polyethylene glycol, ethanol and n-octyl alcohol are limited, so that a prepared tape-casting sheet is smooth in surface and generates no bubble; the glue discharge, sintering temperature, temperature increase speed and sintering pressure are limited in regulation and control, so that the prepared lamellar ultrahigh-temperature ceramic has the advantages of clearness in interface, moderation in strength and good ceramic compactness and is enhanced in fracture toughness by changing a crack propagation path.

The invention provides an extracting method of synthetic peach aldehyde and relates to the industrial field. The extracting method comprises the following steps that 1, octanol, crylic acid and peroxides are placed in a container, and a stirrer is used for full stirring so that the octanol, the crylic acid and the peroxides are uniformly mixed; 2, octanol and cocatalysts are added into a reactor provided with a stirrer, a backflow condensing device and a dropping device; the stirrer is started, materials are heated to a preset temperature, and mixtures of the octanol, the crylic acid and the peroxides are dropped into the reactor within 4 to 10 hours; and under the stirring effect, the backflow reaction is carried out until no moistures or the like are distilled off from a by-product collector, the reaction is finished, and reaction mixtures containing the peach aldehyde are obtained; 3, the reaction mixtures are transferred into a vacuum distillation device, and unreacted octanol is recovered through distillation at 133.3 Pa; 4, the reaction mixtures after the octanol recovery are transferred into the vacuum distillation device, reaction products are extracted through fractionation, and peach aldehyde is obtained; and 5, the peach aldehyde is placed into a special fragrance processing device, and peach aldehyde finished products are obtained. The extracting method has the advantages that the process is simple, the equipment requirement is lower, the treatment condition is mild, the treatment cost is low, the energy consumption is low, in addition, no harmful emission is generated, and the extracting method is suitable for mass production; and the prepared peach aldehyde is colorless clear liquid, has intense peach and amygdaloid fragrance and has no miscellaneous odor.

The invention relates to an extraction agent capable of effectively improving manganese extraction effect and an extraction method. A compounded system formed by high steric hindrance beta-diketone and neutral lewis alkali synergist is used as an extraction agent for extracting a manganese sulphate solution containing calcium and manganese ions, and extraction rate of calcium and manganese is reduced while the extraction rate of manganese is obviously increased, so that effective separation of manganese, calcium and magnesium is realized. The neutral Lewis alkali is one of n-octyl alcohol, tributyl phosphate (TBP) and n-octyl phosphine oxide (TOPO). According to the extraction agent, under the condition of introducing no foreign ion, after extraction is finished, a sulphuric acid solution is utilized for carrying out two-stage cross flow reverse extraction on a load magnesium organic phase obtained by extraction, so as to obtain a manganese sulphate mother solution with higher purity, and then concentration and crystallization are carried out to obtain manganese sulphate, wherein the calcium content and the magnesium content in the manganese sulphate product are less than 10ppm, so that the requirement of battery-level high-purity manganese sulphate to the calcium content and the magnesium content can be met.

The invention discloses a sand adhering prevention cast steel EPC (Expendable Pattern Casting) coating which comprises the following components: bauxite chamotte, graphite powder, bentonite, water glass, carboxymethylcellulose sodium, n-octyl alcohol and fatty alcohol-polyoxyethylene ether. The invention further discloses a preparation method of the sand adhering prevention cast steel EPC coating. Fragment analysis for the sand adhering prevention cast steel EPC coating disclosed by the invention proves that molten steel is not dipped in the coating, refractory aggregate granules in the inner layer of the coating are filled with molten glass, and thus, the molten steel is prevented from being dipped, and a cast is also prevented from being adhered with sand. After the cast is cooled, no sand is adhered on the cast, and most of coating fragments are automatically peeled off from the surface of the cast so that the peel-off effect is obvious. Even through a small amount of coating is not peeled off, the post-treatment is greatly simplified, and a large amount of labors are saved.

The invention discloses a coating for lost foam casting cast iron and production process thereof, belonging to the technical field of the metal material processing and metallurgy. Quartz powder, graphite powder (lead powder), crystalline flake graphite powder, lithium base bentonite, phenolic resin, carboxymethylcellulose, milk-white glue and n-octyl alcohol are taken according to predetermined proportions; next, hot water in a predetermined proportion is taken and then all the materials are blanked and stirred thereto in a predetermined order, thereby obtaining the usable coating. The coating has excellent thixotropism; the coating has no foam or little foam which disappears quickly in the process of stirring and use; and the coating may not craze after being dried.

The invention discloses an O / W type conjugated linoleic acid micro emulsion carrier and a preparation method thereof, belonging to the field of food technology. The micro emulsion carrier comprises the following components in percentage by weight: 1%-30% of mixture, 1-13% of conjugated linoleic acid and 57-98% of water, wherein, the mixture is composed of the following components according to the mass ratio of 1:1:1:1: Tween 80, EL35, alcohol and n-caprylic alcohol. The preparation method of the micro emulsion carrier comprises the following steps: under the condition of continuously stirring, the mixture composed of Tween 80, EL35, alcohol and n-caprylic alcohol is added in a mixed kettle in percentage by weight firstly; then the conjugated linoleic acid is added; and finally, water is added to obtain a clear, transparent and even system, namely the required micro emulsion carrier. The invention not only solves the difficulty of low solubility of conjugated linoleic acid in water, but also greatly improves the stability of the conjugated linoleic acid.

The invention discloses a method of extracting m-phthalic acid-5-sodium sulfonate from trimonomer production wastewater. The method sequentially comprises the following steps: preparing an extraction agent; adjusting the pH value; extracting; re-extracting; concentrating re-extracting liquid; acidifying; concentrating and crystallizing; and drying. In the extraction agent, double components (trioctylamine and ditertiary amine 2, 4-di(N, N-dihexyl) amino dodecylbenzene) are used as complexing agents, 2-heptyl undecyl alcohol is used as a cosolvent and double components (sulfonated kerosene and n-octyl alcohol) are used as diluents. According to the method provided by the invention, a complexing and extracting process is adopted for extracting m-phthalic acid-5-sodium sulfonate from liquid waste at the bottom of a tower after methanol is recovered from trimonomer and the best extraction system and reasonable extraction conditions are selected, so that the extraction rate of m-phthalic acid-5-sodium sulfonate is over 99%, the economic benefit of the trimonomer product is greatly improved, and comprehensive utilization of resources is realized.

The invention discloses a preparation technology of nanometer aluminum hydroxide adjuvant, comprising the following steps: taking benzalkonium bromide, n-caprylic alcohol and cyclohexane at equal ratio; stirring mixture at high speed, and pouring the mixture into a triangular flask; putting in a stir bar; putting the triangular flask on a magnetic stirrer, adding a proper quantity of AlCl3 solution, and stirring; slowing dropwise adding ammonia water into a separating funnel to regulate dripping rate; causing a reaction system to react for 2 hours at the pH of 10; after the reaction ends, adding acetone for demulsification and centrifugation; abandoning supernatant; respectively adding absolute ethyl alcohol and deionized water; evenly stirring by a glass rod; washing for three times, and decentralizing; collecting decentralized sediment into a beaker; drying for 12 hours in a drying oven to obtain fluffy Al(OH)3 adjuvant. The prepared nanometer aluminum hydroxide adjuvant has small grain diameter, good dispersibility and stability and favourable biocompatibility. In an animal experiment, the anti-tumor effect of nanometer aluminium adjuvant adsorption autovaccine is obviously superior to the curative effect obtained by using common aluminium adjuvant adsorption autovaccine.

The invention provides a method for separating dichlorohydrin from compound, comprising the following steps: mixing the compound of dichloropropanol, chlorine hydride and water with extraction agent; then collecting the extraction agent containing dichloropropanol and adopting the method of rectification to obtain dichloropropanol by separation. The method of the invention uses the method of extraction to recover the dichloropropanol in the gas phase, thus not increasing production cost while reducing environmental pollution and achieving good separation effect and high recovery rate; in particular, the resolved solvent can still be recovered and reused, therefore, in many cases, the advantages in terms of technology, economy and environmental protection are demonstrated. Cross current solvent extraction is carried out on N-butyl ether on a four-stage basis, extraction yield of dichloropropanol reaches 91%; cross current solvent extraction is also carried out on n-octyl alcohol on a four-stage basis, the extraction yield of the dichloropropanol reaches 99%; cross current solvent extraction is also carried out on dutch liquid on a five-stage basis, the extraction yield of the dichloropropanol reaches 91%.

The invention relates to a composite organic-silicon liquid defoaming agent. The composite organic-silicon liquid deforming agent is composed of the following components in parts by weight: 12-18 parts of liquid organic silicon active matter, 10-20 parts of an emulsifying agent, 30-35 parts of a stabilizer, 1-5 parts of hydrophobic particles and 42-45 parts of a surface modifier, wherein the organic silicon defoaming active matter is one of or a compound of more than one of methyl silicone oil, methyl phenyl silicone oil, ethyl silicone oil, polyether modified silicone oil and dimethyl siloxane hydrolysate; an emulsifying auxiliary is one of or a compound of more than one of a non-ionic surfactant, alkylphenol polyoxyethylene ether, polyoxyethylene ether and fatty alcohol polyoxyethylene ether; the stabilizer is starch; the hydrophobic particles are one of or a compound of more than one of anhydrous sodium sulfate, alum and white carbon black; and the surface modifier is one of triethanolamine and n-octyl alcohol or a compound of the two. The composite organic-silicon liquid defoaming agent provided by the invention not only can play good defoaming effect in an application process,but also can maintain good stability and persistence in various service environments.

The invention discloses an antibacterial acrylic plate. The antibacterial acrylic plate is prepared from the following raw materials in parts by weight: 98 to 102 parts of methyl methacrylate, 0.1 to 0.7 part of dicumyl peroxide, 18 to 22 parts of aluminium hydroxide, 0.1 to 0.5 part of n-octyl alcohol, 2 to 4 parts of an inorganic antibacterial agent and 0.6 to 1.2 parts of an antistatic agent. The antibacterial acrylic plate provided by the invention is convenient to process and high in construction efficiency, and has excellent antibacterial property, excellent antistatic property, good sensory effect, high weathering resistance and long service life.

The invention discloses a special seed coating agent for micro-endosperm corns, which is a suspending agent shape seed coating agent consisting of imidacloprid, carbendazim, ethrel, IBA, 6-BA, cane sugar, potassium dihydrogen phosphate, potassium nitrate and / or ammonium dihydrogen phosphate, magnesium sulplate, microbiological fertilizer, film-forming agent, non-anionic emulsifier, anionic emulsifier, sodium benzoate, ethylene glycol, n-octyl alcohol, acid scarlet or safranine T and the rest of water. The special seed coating agent for micro-endosperm corns provides a plant growth regulator, thereby quickening the activation of the seeds and promoting the sprouting of the seeds; simultaneously, the special seed coating agent provides various nutritive elements when the root systems of the seeds are not formed, therefore, the metabolism of the seeds is accelerated so that the seedlings emerge ahead of time, and the invalid consumption of the seeds in the soil is reduced; the seeds in the soil and after emergence of seedlings are respectively protected with pesticide, thereby preventing the seeds form being harmed from the diseases and the insects; and the seed coating agent is simultaneously suitable for other corn varieties, the emergence of seedlings of which is affected due to insufficient nutrition or difficult root initiation.

The invention discloses a high-effective environment-friendly oil-based wax removal agent which is prepared with n-octyl alcohol, isoamyl alcohol and a penetrating agent JFC as additives, span-80 and polyethylene glycol monononylphenyl ether as surfactants, and n-heptane, cyclohexane, n-hexane and petroleum ether as solvents without organic chlorine, carbon disulfide and benzene-series solvents, so that the wax removal agent is greatly eliminated in toxicity and reduces damage on operators. The wax removal agent is toxic-free on a catalyst used in a crude oil refining process and is free of corrosion on oil recovery devices and refining devices. The oil-based wax removal agent is higher than 0.90 in specific gravity, not only has wax removal effect but also has viscosity reducing effect with viscosity reducing rate being higher than 35%, is higher than commercial wax removal agents in wax removal rate by 30% and in was removal effect by 10%, is lower than -20 DEG C in condensation point and is suitable in cold weather.

The invention relates to the field of archaeological detection and discloses a preparation method of a bombyx mori silk fibroin monoclonal antibody. The preparation method comprises the following steps: extracting bombyx mori silk fibroin by adopting an isooctane, n-octyl alcohol, bi(2-ethylhexyl) sodium sulfosuccinate and polyvinyl pyridine quaternary ammonium salt mixed system, injecting the bombyx mori silk fibroin serving as a complete antigen into the bodies of rabbits, selecting the rabbits with high immunizing potency, fusing splenic lymphocytes and myeloma cells, cultivating the obtained hybridoma cells, selecting strains with positive secretory antibodies, high secretion ability and good cell growth state by an indirect ELISA method, cloning by a limited dilution method until the antibody secretion positive rate of hybridoma cell growth is 100 percent, performing big turn production on the screened cells, and purifying the obtained monoclonal antibody by a chromatographic column. The antibody prepared by the method has high specificity, and is simple and rapid in operation during the application process and high in detection accuracy.

The invention discloses fireproof paint based on zirconium phosphate and methacrylic acid composite modified acrylate core-shell emulsion. The zirconium phosphate and methacrylic acid composite modified acrylate core-shell emulsion, ammonium polyphosphate, pentaerythritol, melamine, titanium dioxide, hydroxyethyl cellulose, dispersing agents, defoaming agents, n-octyl alcohol and water serve as main raw materials and are compounded to form the fireproof paint. The modified acrylate core-shell emulsion is provided with a soft core and hard shell structure, a soft core portion is modified by zirconium phosphate, a hard shell portion is crosslinked by methacrylic acid, the flame resistance and the water resistance of the acrylate core-shell emulsion can be effectively improved, and excellentaging resistance and yellowing resistance are shown. The prepared fireproof paint has the advantages of long fireproof time, long service life, strong weather resistance, good ornamental feature, water-based environmental protection and the like. Moreover, the fireproof paint is simple to prepare and suitable for popularization and application.

The invention discloses a method for synthesis of a sex pheromone compound of grapholitha molesta. The method is characterized in that 1,8-octanediol and n-butylbromide are used as starting materials; 1,8-octanediol undergoes a monoesterification reaction to produce 8-hydroxyoctyl acetate; 8-hydroxyoctyl acetate is oxidized into 8-oxo-octyl acetate by pyridinium chlorochromate; and n-butyltriphenylphosphonium bromide produced by a reaction of n-butylbromide and triphenylphosphine is treated by organic bases and then undergoes a Wittig reaction with 8-oxo-octyl acetate to produce (Z / E)-8-dodecenyl acetate. The method provided by the invention has the advantages that raw materials are cheap and easily available; a synthesis route is simple; reaction conditions are mild; operation is convenient and safe; a yield is high; and a cost is low.

The invention relates to a methanol diesel. The methanol diesel is characterized by comprising the following components in percentage by weight: 60-80% of diesel, 15-25% of methanol and 5-15% of additives, wherein the additives are composed of the following components in percentage by weight: 0.1-7% of cyclopentyl ferrocene, 2-30% of isopropyl-ketone, 0.2-16% of dimethyl carbonate, 0.1-18% of isobutanol, 0.2-10% of methylbenzene, 0.5-15% of n-butyl alcohol, 6-20% of methyl tertiary-butyl ether, 3-15% of octane, 15% of methyl cyclopentane, 0.2-10% of oleic acid, 0.05-15% of ethyl nitrate, 0.05-10% of 12 carbons, 0.02-1% of castor oil, 2-20% of petroleum ether, 0.5-15% of ethyl acetate, 0.1-20% of n-octyl alcohol, 0.3-30% of isoamyl alcohol, 5-10% of fatty acid, 2-15% of ethanol amine, 1-9% of butanediamide, 0.05-0.4% of benzotriazole, 0.05-1% of Twain and 0.03-2% of span 80. The methanol diesel provided by the invention can be widely used in a vehicle fuel.

The invention discloses a method for treating 2,4-diaminotoluene (TDA) wastewater through complexing extraction. The method is characterized by mainly comprising the steps of pH value adjustment, extraction and an extraction agent recycling treatment process. The method adopts one or two of 2-ethylhexyl 2-ethylhexyl phosphonate, di(2,4,4-trimethyl amyl) phosphonic acid as a complexing agent, one or more of n-octyl alcohol, isooctanol and sec-octyl alcohol as a cosolvent, and kerosene or cyclohexane as a diluent for preparing a complexing exaction agent for separating TDA compounds which are hard to be biochemically treated in the wastewater, and the extraction agent is regenerated by using inorganic acid and is subsequently repeatedly used. The method is simple and reasonable in process, high in operability, convenient to operate and low in treatment cost. The TDA concentration of the wastewater treated by using the process is greatly reduced, the primary extraction removal rate of TDA is 95-99%, and a wide application prospect is achieved.

The invention discloses a preparation method of octyl (R)-2-(4-chloro-2-methylphenoxy) propionate which can be used as a root retarder. The preparation method comprises the following steps: with ethyl L-lactate as a raw material, sulfonating together with p-toluenesulfonyl chloride to obtain a corresponding sulfonyl ester compound; etherifying the sulfonyl ester compound and 4-chloro-o-cresol to obtain a corresponding aromatic ether ester compound; and finally, performing transesterification on the ether ester compound and n-octyl alcohol to obtain octyl (R)-2-(4-chloro-2-methylphenoxy) propionate. Octyl (R)-2-(4-chloro-2-methylphenoxy) propionate prepared by the preparation method provided by the invention is high in optical content, relatively small in optical loss of raw materials and relatively high in yield. The invention establishes a reaction system with the characteristics of simple preparation process, mild reaction condition and low cost, so that the problems that the compound is imported and has a scarce source are solved to a certain extent.

An aqueous composition for plasticizing or softening paint, varnish and similar coatings prior to stripping the coating from a surface includes a combination of the active agents, e.g., triethylphosphate and a co-agent selected from dimethyl adipate, 1,2,3-propanetriol triacetate, tri-n-butyl citrate, n-octyl acetate, methyl octanoate and 2-ethyl-l-butanol; as an emulsified hydrophobic phase in which the actives are partitioned between the hydrophobic and aqueous phases. The emulsion is stabilized using a non-ionic water-soluble block copolymer surfactant, being a copolymer of more than one alkylene oxide. The composition may be thickened using rheology control agent. Synthetic smectic clays are particularly suitable. The composition is non-toxic and consists predominantly of water, and yet exhibits effective paint, varnish and lacquer plasticizing / softening.

Disclosed is a dentifrice composition which exhibits high local retention properties for a preparation in the oral cavity, while having an excellent bactericidal effect on oral biofilms. The dentifrice composition has a flavor that is almost free from unpleasant taste and excellent feeling of use, while being suppressed in stickiness. Specifically disclosed is a dentifrice composition which is characterized by containing (A) isopropyl methyl phenol, (B) at least one fragrance material selected from among 3-octanol, 3-octyl acetate, 3-octanone and fenchone, (C) sorbit, (D) glycerin and (E) a polyethylene glycol that has an average molecular weight of 280-9,300. The dentifrice composition additionally contains (F) anisaldehyde.