533 results about "Saponification" patented technology

The invention discloses an ethylene-vinyl alcohol copolymer and a preparation method thereof, and relates to the technical field of resin. According to the technical scheme, the preparation method comprises the following steps: adding ethylene, low-carbon alkane, alkyl acid ethyl ester, alkyl acid vinyl ester and a carbon-carbon skeleton initiator into a reaction kettle, and carrying out a free radical polymerization reaction; adding a polymerization inhibitor to terminate the reaction, removing low-carbon alkane, unreacted ethylene and alkyl acid vinyl ester, and preparing the reaction liquid into an alcoholic solution; adding a catalyst into the alcohol solution for saponification reaction, and then performing acid pickling, water washing and drying to obtain the ethylene-vinyl alcohol copolymer. The low-carbon alkane which is low in boiling point, easy to vaporize and high in latent heat of vaporization and the saturated alkyl acid ethyl ester with good solubility are adopted as the mixed solvent to replace a traditional alcohol solvent, so that removal and control of reaction heat are facilitated, generation of insoluble gel is reduced, a copolymer with narrow molecular weight distribution is easy to obtain, and the method is suitable for industrial production. The cost that azeotrope formed by the alcohol solvent and the monomer is difficult to separate and recover is greatly reduced, and the production efficiency is improved.

The invention belongs to the field of flotation, and particularly relates to a lithium-containing china clay ore flotation method which comprises the following steps: carrying out flotation on to-be-separated minerals of lithium-containing china clay ore in a flotation reagent containing a collecting agent to obtain lithium china clay ore concentrate; the collecting agent is characterized in that the collecting agent is a compound shown in the formula 1 # imgabs0 #; and / or a product obtained by carrying out an addition reaction on a formula 2 (R-NH2) and a formula 3 # imgabs1 # in advance and then carrying out a saponification reaction with an alkali. According to the collecting agent for the lithium china clay ore, the component shown in the formula 1 is innovatively adopted as the collecting agent for the lithium china clay ore, in this way, on the basis of intermolecular coupling of beta-NH-and-COOM, the collecting agent can accidentally adapt to the surface characteristics of target minerals of the lithium china clay ore, high-selectivity collecting can be achieved, and effective collecting under the low-temperature and mild conditions can be achieved.

The invention discloses a supported composite zinc catalyst and application thereof in biodiesel, and belongs to the technical field of catalyst preparation. The supported composite zinc catalyst provided by the invention comprises the following components: an AlPO4-SiO2 composite carrier, a zinc-cerium bimetallic active component supported on the carrier, and a hydrophobic modification layer coated outside the active component. The supported composite zinc catalyst has higher tolerance to moisture and free fatty acid in the waste grease, saponification side reaction is reduced, raw material pretreatment requirements are simplified, the catalyst is easy to recover and reuse, and production cost and environmental burden are remarkably reduced.

Provided are industrial processes for producing an organic acid alky ester from a feedstock containing organic acids and / or saponifiables, comprising: countercurrently contacting a feedstock with an organic alkylating reagent over two or more vessels or stages at temperature between 100° C. and 400° C. and pressure between 0.1 barg and 355 barg while simultaneously removing water and / or glycerin with unreacted alkylating reagent from the final vessel or stage to result in a first reaction method product containing organic acid alkyl esters, followed by a choice of using the alkyl esters as-is, purifying the organic acid alkyl esters from the first reaction product mixture or subjecting the first reaction product mixture to an additional transesterification reaction to convert saponifiables into additional organic acid alkyl esters, then purifying the organic acid alkyl esters from this second reaction method product.

The invention belongs to the field of steel pipes, and particularly relates to a method for manufacturing a cold drawn pipe, which comprises the following steps of: obtaining a raw material steel pipe which comprises the following elements in percentage by weight: less than or equal to 0.20 percent of C, less than or equal to 0.50 percent of Si, less than or equal to 1.70 percent of Mn, less than or equal to 0.025 percent of P, less than or equal to 0.035 percent of S, less than or equal to 0.30 percent of Cr, less than or equal to 0.50 percent of Ni, less than or equal to 0.10 percent of Mo, 0.05-0.15 percent of V and the balance of Fe; the method comprises the following steps: pretreating a raw material steel pipe, wherein the pretreatment sequentially comprises acid washing, alkali washing, water washing, phosphating, water washing and saponification; and carrying out cold drawing and annealing on the pretreated steel pipe to obtain the cold-drawn pipe. The invention also relates to the cold drawn pipe. According to the method disclosed by the invention, pollution between bath solutions in pretreatment is reduced, the surface quality after pretreatment is improved, and the upper yield strength, tensile strength and normal-temperature impact absorption energy of the cold-drawn pipe are improved, so that the cold-drawn pipe has relatively good toughness and welding performance.

The invention discloses a lubricating process of a surface treatment process of a corrosion-resistant steel member, which comprises the following steps: S1, rust removal: carrying out first rust removal on the steel member by adopting a chemical mode, and then carrying out second rust removal on the steel member by adopting a mechanical mode; s2, oil removal: removing non-saponified oil stains by using an organic solvent, and removing saponified animal and vegetable oil by using an alkaline solvent; s3, phosphate is adopted for phosphating treatment, and a microporous structure layer is formed; s4, spraying is conducted on the steel component, and a metal coating is formed; s5, spraying an organic sealing layer on the metal coating; s6, drying: drying by adopting a dryer or a natural air-drying mode; and S7, sealing pores by using a silane impregnant to form a hydrophobic protection layer. Compared with the prior art, the problems that the protection effect is poor, severe environments cannot be handled and the service life is short due to the fact that anti-corrosion paint is mostly coated on the surfaces of the steel components for protection in existing steel component anti-corrosion treatment can be solved.

The invention discloses a preparation technology of collection paper literature deacidification test paper, and belongs to the technical field of papermaking engineering. The method comprises the following steps: firstly, determining physicochemical indexes of the deacidification test paper according to ontology characteristics of precious ancient books and recent modern paper literatures, then taking saponified rosin size as an internal sizing agent, taking talcum powder as a filler, taking cationic polyacrylamide (CPAM) as a retention aid, and finally, carrying out papermaking and drying to obtain the deacidification test paper. The performance of the product prepared by the process is basically consistent with that of recent modern literature paper, the product has the capability of replacing a paper literature body to carry out lossy testing, and a more reliable, more comprehensive and more economical basis can be provided for constructing a deacidification effect evaluation system.

The invention relates to the technical field of battery recovery, in particular to a method for separating and recovering metal elements in waste ternary lithium ion battery leachate, which comprises the following steps: A) mixing an extracting agent 2-n-hexyldecanoic acid with a diluent to obtain an extracting solvent; b) mixing the extracting solvent with a saponifying agent to obtain a saponified extracting solvent; c1) mixing the waste ternary lithium ion battery leachate with the saponified extraction solvent, and carrying out single-stage extraction to obtain a raffinate water phase and a loaded organic phase; and D1) mixing the loaded organic phase with a back extraction agent, and carrying out back extraction to obtain a back extraction solution and a blank organic phase. According to the invention, the problems of complex recovery process and difficult separation of calcium and magnesium in the nickel-cobalt-manganese co-extraction process in the prior art are solved, and the recovery of nickel, cobalt and manganese can be realized through one-step selective co-extraction process; the technological process is short and the metal recovery rate is high.

The invention provides a continuous saponification device for an extracting agent. The continuous saponification device comprises a saponification kettle and a saponification clarifying tank, the upper part of the saponification kettle is communicated with the saponification clarification tank through an overflow pipeline; the bottom of the saponification kettle is communicated with the bottom of the saponification clarification tank through a water phase reflux pipeline; a stirring device is arranged in the bottom of the saponification kettle, and a plurality of extracting agent feeding pipes extending near the stirring device are arranged in the middle of the upper part of the saponification kettle; a plurality of liquid caustic soda feeding pipes extending to the vicinity of the stirring device are arranged at the upper part of the saponification kettle and around the extracting agent feeding pipe; the saponification kettle is of an external jacket type structure, the lower part of an interlayer space of the saponification kettle is communicated with a steam inlet, and the upper part of the interlayer space is communicated with a steam outlet; according to the continuous saponification device for the extraction agent and the saponification method of the continuous saponification device for the extraction agent, the saponification efficiency of the extraction agent is high, liquid caustic soda residues are low, and therefore consumption of the liquid caustic soda is correspondingly low, the production cost is low, and economic benefits are good.

The invention provides a doubling treatment method of battery black powder and nickel cobalt hydroxide. The doubling treatment method comprises the following steps: carrying out reduction roasting and water immersion treatment on the battery black powder to obtain a first lithium-containing liquid and a solid product; carrying out acid leaching on the solid product to obtain a leaching solution; after removing impurities from the leachate, extracting the leachate with a first saponification extraction agent to obtain first raffinate and a first extraction organic phase; carrying out soap conversion reaction on the first raffinate and a second saponification extraction agent to obtain a second extracted and soap-converted organic phase and a second lithium-containing liquid; carrying out acid leaching and impurity removal on nickel cobalt hydroxide, and carrying out extraction reaction on the solution and the second extraction soap-converted organic phase to obtain a second extraction organic phase and a second raffinate; the second raffinate is subjected to Co extraction, Mg extraction and evaporative crystallization, and nickel sulfate is obtained; and the organic phase obtained after Co extraction is subjected to back extraction and evaporative crystallization, and cobalt sulfate is obtained. Compared with a traditional doubling treatment technology, the doubling treatment method avoids the problem of impurity pollution caused by doubling treatment of traditional battery black powder and nickel cobalt hydroxide raw materials.

The invention relates to a synthetic method of 1, 4-butanediol diglycidyl ether, 1, 4-butanediol and epichlorohydrin are synthesized in one step under the action of a phase transfer catalyst, in the one-step process, once 1, 4-butanediol and epichlorohydrin are subjected to ring-opening reaction to produce a chlorohydrin ether intermediate, the chlorohydrin ether intermediate is subjected to ring-opening reaction, and the chlorohydrin ether intermediate is subjected to ring-opening reaction to produce the 1, 4-butanediol diglycidyl ether. The intermediate can be subjected to ring-closure production immediately under the action of solid alkali to produce an epoxy group, the obtained 1, 4-butanediol diglycidyl ether is relatively low in easily saponifiable chlorine content, and the target product is relatively high in purity. After the reaction is finished, sodium chloride generated by the reaction and unreacted solid caustic soda can be removed through direct suction filtration to obtain a neutral system, washing is not needed, no waste liquid is generated, operation is easy, and the method is suitable for clean industrial production.

The invention relates to the technical field of analytical chemistry, in particular to a method for simultaneously determining seven fat-soluble vitamin compounds. The method comprises the following steps: in 0-4.5 minutes, transferring a sample solution into an on-line solid-phase extraction column by a sample loading pump, and communicating an analysis pump with a liquid chromatographic analysis column through a switching valve for balancing; in 4.5-6.5 min, adjusting the state of a switching valve, respectively communicating two ends of the online solid-phase extraction column with an analysis column and an analysis pump of the liquid chromatography, and backflushing the analyte from the online solid-phase extraction column and transferring the analyte into the analysis column of the liquid chromatography by a mobile phase of the analysis pump; and 6.5-42 min, adjusting the state of the switching valve, flushing and balancing the on-line solid phase extraction column by the sample loading pump, and completing separation and analysis of the analyte by matching the analysis pump with the analysis column of the liquid chromatography. According to the method disclosed by the invention, saponification liquid can be directly analyzed on a machine, and seven target compounds can be separated and detected within 42 minutes.

The invention provides a method for recovering lithium from salt lake brine with a high magnesium-lithium ratio. Lithium is extracted through the working procedures of pretreatment, adsorption, desorption, solvent extraction and precipitation, a specific extraction agent is adopted for saponification, a saponified organic phase is prepared, then the saponified organic phase and a lithium-containing desorption solution are extracted, and a raffinate and a loaded organic phase are obtained respectively; carrying out reverse extraction on the loaded organic phase to respectively obtain a lithium-containing concentrated solution and a blank organic phase; and then, mixing the lithium-containing concentrated solution with a precipitant, and carrying out solid-liquid separation to obtain lithium carbonate. According to the method disclosed by the invention, a co-extractant ferric trichloride does not need to be added, so that the problems caused by the co-extractant in the prior art are avoided, and the extraction separation of lithium in a near-neutral pH range is realized; moreover, the pH value of the raffinate is in a near-neutral range (about 7-8), so that the subsequent wastewater treatment difficulty is reduced; in the reverse extraction section, lithium in a loaded organic phase is enriched into a water phase in a phase ratio regulation and control mode, and a lithium carbonate product can be prepared through direct precipitation.

The invention relates to a method for extracting high-purity nervonic acid from malania oleifera oil, which comprises the following steps: 1, saponification-metal salt precipitation: taking malania oleifera oil, adding alkali, adding a non-aqueous solvent, heating, refluxing, saponifying, cooling, precipitating, filtering, and removing a solution to obtain filter residues; step 2, acidification: adding acid water into the filter residues obtained in the step 1 for acidification, standing for layering, and discarding a water layer to obtain an oil layer; 3, washing: washing the oil layer obtained in the step 2 to obtain a washed oil layer; 4, fractional precipitation: adding a first organic solvent into the washed oil layer obtained in the step 3, carrying out first-stage precipitation, and filtering to remove filter residues; and carrying out second-stage precipitation and filtration. And 5, recrystallization: adding a second organic solvent into the filter residue obtained in the step 4, recrystallizing, filtering, and taking the filter residue to obtain nervonic acid. The nervonic acid with the content not lower than 95%, the purity not lower than 98% and the yield not lower than 70% can be obtained.

The invention discloses a method for extracting cesium from salt lake brine. The method comprises the following steps: step 1, carrying out saponification reaction, and centrifugally standing for layering; step 2, adjusting the pH value of the salt lake brine, and putting the salt lake brine into a reaction container for extraction; step 3, washing until the concentration of the organic solution containing the cesium element is less than 0.01 g / L; step 4, carrying out back extraction; and 5, impurity removal is conducted on a cesium-containing reverse extraction phase obtained after reverse extraction. The method has the advantages that the salt lake brine is extracted through the saponified organic phase, the alkali liquor consumption is very small and can be recycled, meanwhile, addition of a large amount of strongly alkaline substances into the organic phase is avoided, environment pollution caused by generation of a large amount of waste alkali liquor is avoided, the production cost and the treatment cost are reduced, the treatment capacity is large, the process and equipment are simple, investment is small, and the method is suitable for industrial production. And continuous production is easy to realize.

The present invention discloses a bio-based anionic super dispersant having a structure shown in formula I or formula II. The super dispersant shown in formula I is formed by rigid terephthalate and flexible vinyl linked by ether bonds; the super dispersant shown in formula II is formed by rigid terephthalate and flexible glycerol linked by ether bonds. The preparation method of the super dispersant in the present invention is: succinylsuccinic acid dimethyl ester is oxidized to obtain 2,5-hydroxy terephthalic acid dimethyl ester, and then condensed with 1,2-dichloroethane (or epichlorohydrin) and the like to form an ether, and then the ester bond is saponified under an alkali agent to obtain. The preparation method of the super dispersant provided by the present invention is simple, has a high biochar content, a high yield, good pigment dispersion performance, and good stability of the obtained pigment paste.

The present invention relates to the mono-saponification of diesters of 2,3,5-trimethylhydroquinone by a base allowing an advantageous synthesis of esterified alpha-tocopherol. The mono-saponification has been demonstrated to occur very selectively at very high yield.

The invention relates to a green residue-reducing epoxypropane production device and method, and belongs to the field of energy-saving and environment-friendly chemical equipment. The production device disclosed by the invention not only reduces the concentration of hydrogen chloride in chlorohydrin entering a saponification system and the dosage of lime milk in saponification, but also remarkably reduces the amount of filter residues needing to be additionally treated, so that more effective cost control is realized while the production efficiency is improved and green residue reduction is promoted; the production cost of the epoxypropane is greatly reduced, and the economic advantage is remarkable.

The invention discloses a qualitative and quantitative detection method for vitamin A and vitamin E in food. The qualitative and quantitative detection method comprises the following steps: step 1, pre-treating a sample and accurately adding an isotope internal standard: adding d6-alpha-tocopheryl acetate and d8-retinol acetate into the sample before saponification and preparing a blank matrix; 2, pre-treatment parameter QbD-DOE collaborative optimization, wherein a response surface method is adopted for conducting center composite design on the saponification temperature, time and BHT concentration, and the interaction effect of all the factors is analyzed to determine an optimal operation window; step 3, intelligently optimizing chromatography-mass spectrometry conditions and tuning parameters; step 4, constructing a matrix matching calibration curve and performing WLS quantitative analysis: performing gradient dilution on a standard substance by utilizing a blank matrix extracting solution, adding an isotope internal standard to prepare a 5-7-point matrix matching calibration curve, fitting the curve by adopting a weighted least square method, and verifying the correlation and intercept change of the calibration curve every day; and 5, multi-dimensional qualitative confirmation and intelligent diagnosis system operation.

The application discloses an extraction method of functional fatty acid, which comprises the following steps: dissolving lanolin in an alcohol aqueous solution, adding an excess of strong alkali, and heating to perform saponification to obtain a saponification solution; adjusting the pH of the saponification solution to neutral or weak alkaline by using a strong acid aqueous solution; adding a calcium chloride alcohol aqueous solution to the saponification solution to obtain a calcium fatty acid precipitate, and washing the precipitate with an alcohol aqueous solution; taking the calcium fatty acid precipitate, adding water, and adjusting the pH to strong acidity, and performing acidification under the condition of ultrasonic heating; adding an extraction solvent to perform extraction and separation, removing the water phase, reserving the organic phase, removing the extraction solvent by rotary evaporation, and obtaining the functional fatty acid. The application uses an ultrasonic acidification method to improve the technology of extracting functional fatty acid in lanolin by calcium precipitation, significantly solves the problem of calcium fatty acid acidification difficulty in lanolin, greatly improves the yield and purity of the functional fatty acid, and shortens the production time of the functional fatty acid.

The invention provides an extraction and purification process for producing astaxanthin based on a fermentation method, which specifically comprises the following steps: step 1, preparing materials: selecting shrimp shells, cleaning the shrimp shells, removing impurities doped in the shrimp shells, and then putting the cleaned shrimp shells into a dehydration device for dehydration; step 2, pretreatment; 3, extraction: putting the pretreated shrimp shells into an extraction kettle for extraction; step 4, separation; and step 5, saponification treatment. When the device is used, shrimp shells enter the inner container through the feeding pipe, a cleaning agent enters the water inlet pipe, the cleaning agent enters the inner container through the filtering holes to soak the shrimp shells, and the supporting columns drive the stirring plates to rotate to stir materials during soaking; and in the later period, the supporting column drives the stirring plate to rotate and stir, and meanwhile the materials are conveniently pushed to the position between the connecting cylinder and the discharging cylinder through a scraper on the connecting column.

This invention discloses a method for deep removal of calcium and magnesium from battery-grade manganese sulfate solution, belonging to the field of hydrometallurgical technology. The invention employs a three-stage purification process: pretreatment for impurity removal, gradient precipitation with manganese fluoride, selective extraction, and chelating resin refinement. First, the manganese sulfate leachate undergoes pretreatment to remove iron, aluminum, and heavy metals. Then, an in-situ / direct addition of manganese fluoride precipitation system using magnesium fluoride seeding and gradient fluoride supplementation efficiently removes most calcium and magnesium impurities from the solution, achieving a single-precipitation rate of over 93% for magnesium ions. Subsequently, a P507 / Cyanex272 / TBP compound saponification organic system is used with a reverse extraction logic of "extracting calcium and magnesium while retaining manganese in the aqueous phase" to precisely remove residual calcium and magnesium, avoiding the problems of competition between manganese and calcium and low magnesium extraction efficiency in traditional extraction methods. Finally, trace amounts of calcium, magnesium, and residual fluoride ions are completely removed through aluminum salt complexation for fluoride removal combined with deep refinement using aminocarboxylic acid chelating resin. This invention introduces no foreign impurities such as sodium and ammonium throughout the entire process, has a wide process window and strong industrial stability, and the final purified manganese sulfate solution can stably meet the high-end battery-grade index requirements of Ca²⁺≤5mg / l, Mg²⁺≤5mg / l, and F⁻≤1mg / l, making it suitable for the large-scale production of high-purity manganese sulfate, a raw material for lithium battery cathodes.

The invention relates to the technical field of feed additives, in particular to a feed additive for promoting xanthophyll deposition of largemouth bass and a detection method. An extracting solution, a 40% KOH-methanol solution and a 10% Na2SO4 solution are prepared; the method comprises the following steps: pretreating a sample by using an extracting solution and 40% KOH-methanol; carrying out saponification treatment on the pretreated sample, and then cooling; treating the sample subjected to saponification treatment by using a Na2SO4 solution; and measuring the absorbance of the treated sample. By optimizing the formula of the extracting solution and improving the pretreatment and saponification conditions, the extraction efficiency of the xanthophyll is remarkably improved, so that the accuracy of a detection result is ensured. Tedious steps and potential error sources are reduced, so that the detection result is more reliable. Meanwhile, the adopted materials and reagents are relatively low in cost, high-end professional equipment is not needed in the operation process, and the detection cost is reduced. Therefore, the problems that an existing xanthophyll deposition detection method is high in cost and complex in operation are solved.

Provided is a coating composition which is not susceptible to sagging and is capable of efficiently forming a high-quality coating film protective coating material. Provided is a coating composition for forming a coating film protective coating material, the coating composition containing, as a base polymer, a polymer (A) that is a polymer containing a monomer component of an acrylic monomer, the polymer (A) being in the form of an aqueous emulsion dispersed in an aqueous solvent. The coating composition further contains a polyvinyl alcohol polymer (B) having a degree of saponification of 80 mol% or more and a degree of polymerization of 1200 or less. The content of the polymer (B) is from 0.3 parts by weight to 5.0 parts by weight (inclusive) per 100 parts by weight of the polymer (A). The coating composition has a viscosity of 25 Pa.s or more as measured by a BH-type viscometer under conditions of 30 DEG C and 2 rpm.

The invention relates to the technical field of organic waste resource utilization, and discloses a method for co-production of lactic acid and crude grease by using perishable garbage, and the method comprises the following steps: step a, preparing the perishable garbage into slurry; b, feeding the slurry into an electrochemical reactor for electrochemical treatment; c, carrying out acidification treatment on the generated fatty acid salt to recover crude oil; and step d, carrying out lactic acid fermentation on the residual liquid rich in the small molecular sugar after the crude oil is recovered to obtain the lactic acid. The anode region and the cathode region which are separated by the ion selective diaphragm are arranged in the electrochemical reactor, and acid and alkali are respectively generated in situ in the two regions by utilizing water electrolysis and are directly used for hydrolysis of polysaccharide and saponification of grease, so that chemical reagents such as sulfuric acid and caustic soda do not need to be additionally added; the introduction of extra impurity ions such as sulfate radicals and sodium ions into the system is avoided, the load of subsequent product separation and wastewater treatment is reduced, and the process flow is simplified.

The invention belongs to the technical field of nickel and cobalt wet refining, and particularly discloses a method for separating and recycling scandium from impurity P204 organic matter extracted from a scandium-containing nickel and cobalt material, the P204 organic matter after iron washing is mixed with a sodium hydroxide solution with the concentration of 1-1.2 mol / L and the phase ratio O / A of 1: (1-1.2), P204 saponification is completed in the mixing process, meanwhile, trace scandium loaded in the P204 organic matter can be reversely extracted, and the scandium content in the P204 organic matter can be recycled. Partial scandium in the saponification strip liquor is hydrolyzed into precipitates, and partial scandium is dissolved in the precipitates; after saponification, organic acidification is conducted till the saponification rate is 65% and then returns to an original production system, saponification strip liquor is heated to 95 DEG C, acetic acid is added for scandium precipitation, the addition amount of acetic acid is 1.0-1.2 times of the theoretical scandium precipitation amount, obtained precipitation residues are scandium acetate residues, sodium hydroxide is supplemented into the liquid obtained after precipitation, and then saponification circulation is conducted; the method is characterized in that a saponification mode of an original process is changed, saponification strip liquor is separated, scandium is precipitated, a scandium precipitation reagent has no influence on an original production system, sodium hydroxide is supplemented into liquor after scandium precipitation, then the liquor returns to the system for reuse, no three wastes are generated in the scandium recovery process, and the method is a clean scandium recovery process method.

The invention relates to nano-composite low-temperature wind power lubricating grease and a preparation method thereof, and belongs to the technical field of lubricating grease. The invention aims to solve the technical problems of large viscosity change, poor friction surface adsorbability and difficulty in forming a high-strength thick friction film of the existing lubricating grease at low temperature. The lubricating grease comprises the following components in percentage by mass: 0.10%-5% of copper or silver nanoparticles, 0.10%-3.00% of ionic liquid, 5.00%-15.00% of a thickening agent, 1.50%-5.00% of a saponification reactant, 0.10%-0.50% of an antioxidant, 0.01%-1.00% of an antirust agent, 0.10%-0.50% of a demulsifying agent and the balance of base oil, wherein the sum of the mass percentages of the components is 100%. Through the synergistic effect of the nano-particles and the ionic liquid, a composite lubricating film with strong adsorption and high bearing capacity is formed on the surface of a friction pair under the extremely cold condition, so that the lubricating oil still has excellent antifriction and antiwear performance and lubricating stability in the low-temperature environment of minus 40 DEG C or below, and is specially used for long-acting lubrication of wind power bearings, motors and transmission equipment.

The present invention aims to provide a resin composition which, when formed into a film, exhibits reduced occurrence of fisheyes, and a film using the resin composition. A resin composition comprising: 70 parts by weight or more and 98.99 parts by weight or less of two or more types of thermoplastic resins (A) comprising at least a polyolefin, and being derived from a recovered material of a used plastic product; 1 part by weight or more and 29.99 parts by weight or less of a compatibilizer (B); and 0.01 parts by weight or more and 5 parts by weight or less of at least one selected from the group consisting of a fatty acid metal salt (C) or a saponified ethylene-vinyl acetate copolymer (D), provided that a total amount of (A), (B), and (C) and / or (D) is 100 parts by weight.

The invention discloses a quantitative calculation method for the comprehensive utilization rate of acid in a crude fatty acid preparation process, and belongs to the technical field of quantitative calculation of the comprehensive utilization rate of acid, and the quantitative calculation method comprises the following steps: measuring the prepared crude fatty acid and the acid value of a raw material nigre used for preparation, and calculating the amount of substance of acid consumed by acidification reaction after corresponding data is obtained; measuring the acidity of the strong acid in the total process effluent, and calculating the amount of residual acid substance in the total process effluent after corresponding data is obtained; calculating the amount of substance of the acid for neutralizing the excessive monobasic base in the saponification reaction according to the amount of substance of the added acid and the calculated data; and finally calculating the acid comprehensive utilization rate. According to the method, the acid utilization path is analyzed through the technological process, relevant parameters are measured, the quantitative method is constructed, quantitative calculation of the comprehensive utilization rate of the acid is achieved, the method is simple, convenient and easy to operate and achieve, raw material consumption and salinity and acidity in waste water can be remarkably reduced, and the method has great significance in improving the product yield and reducing environmental pollution.

The present invention relates to an oligoester obtained by an esterification reaction of component (1): one or more waxes selected from vegetable waxes that are solid at 25°C and animal waxes that are solid at 25°C; and component (3): component (A) glycerin, component (B) a divalent carboxylic acid having 2 to 12 carbon atoms, component (C) one or more fatty acids selected from the group consisting of caprylic acid, ethylhexanoic acid, isononanoic acid, isopalmitic acid, and isostearic acid, and component (D) one or more fatty acids selected from linear saturated fatty acids having 10 to 24 carbon atoms. the esterification reaction is carried out with 0.65 to 0.8 mol of the component (B) and 1.2 to 1.7 mol of a total amount of the component (C) and the component (D) per 1 mol of the component (A), the mass ratio of the component (C) to the component (D) used in the esterification reaction is component (C):component (D)=10:90 to 99.9:0.1, and the oligoester has an acid value of 5 mgKOH / g or less, a saponification value of 420 to 510 mgKOH / g, and a hydroxyl value of 60 mgKOH / g or less.