281 results about "Saponification" patented technology

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 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 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.

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 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 invention discloses a safe and efficient epoxypropane saponification reaction device and a safe and efficient epoxypropane saponification reaction method. The saponification reaction device comprises an outer wall, and tower plates, a feeding hole and a discharging hole which are arranged in the outer wall, wherein the top pressure of the saponification reaction device is P1, and the kettle pressure of the saponification reaction device is P2, P2gt; the difference value meets the relational expression of 0 kPad; (1), P2-P1 < = 20 kPa. According to the device, the condition that a saponification reaction device is easy to block is greatly improved, the production efficiency is remarkably improved, and the economic advantage is remarkable. In addition, the saponification reaction device also remarkably improves the safety and reduces the accident rate.

A coating composition is provided that is less sensitive to running and can provide a high-quality paint or varnish protective coating material. The provided coating composition comprises a polymer (A) as the base polymer. The polymer (A) is a polymer of a monomer material comprising an acrylic monomer and is in the form of an aqueous emulsion in which the polymer (A) is dispersed in an aqueous solvent. The coating composition further comprises a polyvinyl alcohol polymer (B) with a degree of saponification of 80 mol% or higher and a degree of polymerization of 1200 or lower. The amount of the polyvinyl alcohol polymer (B) is 0.3 parts by weight or more and 5.0 parts by weight or less per 100 parts by weight of polymer (A). The coating composition has a viscosity of 25 Pa·s or higher, determined at 30 °C and 2 rpm using a BH viscometer.

This invention discloses a paint remover for steel-aluminum composite materials, belonging to the field of metal material surface treatment technology. It comprises the following components in weight percentages: 5%-8% alkaline substance; 5%-10% lipase component; 10%-16% solvent; 5%-10% surfactant; 6%-13% co-solvent; 5%-8% corrosion inhibitor; and water as the balance. The paint remover is prepared from alkaline substance, lipase component, solvent, surfactant, co-solvent, corrosion inhibitor, and water. It is used for removing paint from steel-aluminum composite materials. On one hand, the alkaline substance saponifies some groups in the paint, dissolving them in the solvent and water. On the other hand, heating and steaming the paint film reduces its strength and adhesion to the metal. Then, utilizing the wetting, penetration, and affinity effects of the surfactant, the catalytic effect of the lipase component, and the protective effect of the corrosion inhibitor on the steel-aluminum substrate, the goal of removing paint quickly without corroding the substrate is achieved.

The application relates to the technical field of synthetic rubber, in particular to a nitrile rubber, a preparation method and application thereof, wherein the preparation method adopts at least potassium saponification soap and / or sodium saponification soap of disulfated rosin acid, C 10 -C 13 A composite emulsifier system composed of linear alkyl benzene sulfonic acid and naphthalene sulfonic acid formaldehyde condensate sodium salt and a low-temperature emulsion polymerization process, and the obtained nitrile rubber can be used in the field of oil-resistant sealing in a hydraulic oil operation environment.

The invention also provides a briquette comprising:(i) a particulate material; and(ii) a binder, the binder comprising (a) at least partially saponified polyvinyl alcohol and (b) an alkali metal alkyl siliconate or polyalkylsilicic acid; wherein the particulate material is selected from a carbonaceous material, metal, metal ore, mineral waste or a mixture thereof.

The invention discloses a control method for shunt calcium reduction in a rare earth extraction process, which comprises the following steps: a rare earth saponification section is divided into N saponification sections which are connected in series, and N is greater than or equal to 4; saponification organic matter is divided into N / 2 streams, the saponification organic matter obtained after stream division is introduced into saponification sections, the first stream of saponification organic matter is introduced from the first stage of a rare earth saponification section, and rare earth feed liquid is introduced from the last stage of saponification section; and adjusting the shunting proportion of each strand according to the working condition of the rare earth saponification section, controlling the shunting proportion of the first strand of saponification organic matters to be 25-35% of the total flow of the saponification organic matters, and controlling the shunting proportion of the residual saponification sections to be not lower than 15% of the total flow of the saponification organic matters. According to the method, the saponification organic phase is subjected to proportion optimization shunting and introduced into different positions of the rare earth saponification section, local Ca < 2 + > concentration gradient peak clipping is achieved, Ca < 2 + > is distributed in a system in a balanced mode, and therefore the CaSO4 precipitation generation risk is remarkably reduced.

The invention discloses an extraction and saponification system adopting lithium precipitation mother liquor and a saponification method of the extraction and saponification system, and particularly relates to the technical field of extraction and saponification. The extraction and saponification system comprises a static tubular mixer, one end of the static tubular mixer communicates with an extraction agent guide pipe, and one side of the top of the static tubular mixer communicates with a lithium precipitation mother liquor guide pipe; a heat exchange box is arranged on one side of the static tubular mixer, the water outlet end, away from the extraction agent guide pipe, of the static tubular mixer communicates with a heat exchange pipe, one end of the heat exchange pipe penetrates through the heat exchange box to be connected with a flow guide pipe, and one side of the middle of the flow guide pipe communicates with a tubular saponification mixer; the end, away from the heat exchange pipe, of the flow guide pipe communicates with a clarification tank, and an inclined plate assembly is arranged in the middle of the clarification tank. According to the method, part of the lithium precipitation mother liquor is returned for extraction to be used as part of saponification alkali, and a set of equipment facilities are used for matching, so that the consumption of the liquid alkali in the extraction process production can be reduced, and the lithium precipitation mother liquor is recycled.

Antifog compositions comprising a primary film with opposing principal flat surfaces and a central coplanar region, and processes for manufacturing such compositions. The central coplanar region is located between the opposing principal flat surfaces. The primary film comprises cellulose acetate, a plasticizer, and an antiblocking agent. The antiblocking agent has an average particle size ranging from 0.02 microns to 6 microns. The cellulose acetate exhibits a degree of substitution that increases from the opposing principal flat surfaces toward the central coplanar region, or remains practically constant throughout the thickness of the composition. The composition is formed by saponifying a precursor film to enhance its hydrophilicity.

The utility model relates to the technical field of reaction kettles, in particular to a saponification reaction kettle for producing sodium alkyl hydroxamic acid, which comprises a suspended cover, a kettle body, a stirring motor and a scraping mechanism, and the scraping mechanism comprises a sleeve shaft, a stirring plate, a connecting rod, a shifting sleeve and a shifting cylinder. In the scraping mechanism, a sleeve shaft is fixed to the rotating shaft, a stirring plate is provided with a scraping strip, a connecting rod is hinged to be deformable, and a shifting sleeve is matched with a shifting air cylinder. When scraping is needed, the shifting cylinder drives the shifting sleeve to slide downwards, the scraping strip is attached to the inner wall of the kettle body to remove impurities, and when scraping is not needed, the shifting sleeve moves upwards to drive the scraping strip to be away from the inner wall, and friction loss is reduced. According to the reaction kettle, through the scraping mechanism, the cleanness in the kettle can be ensured, the reaction effect and the product quality are improved, the abrasion of parts can be reduced, the service life of equipment is prolonged, and the maintenance cost is reduced.

The invention discloses hump conjugated linoleic acid, a hump conjugated linoleic acid microcapsule and a preparation method and application of the hump conjugated linoleic acid microcapsule, and belongs to the technical field of deep processing of hump fat. According to the method, petroleum ether is used as a solvent, crude fat is extracted from hump fat through a Soxhlet extraction method, NaOH-ethanol is used for saponifying the crude fat, then a low-temperature crystallization method is combined with a urea adduction method, and finally, the conjugated linoleic acid is effectively separated and purified. The determination of the free radical scavenging ability of DPPH and ABTS shows that the obtained CLA has oxidation resistance. Extracted and purified conjugated linoleic acid is used as a core material, whey protein isolate and maltodextrin are selected as wall materials, an emulsion is prepared, and microcapsule powder is prepared by a direct vacuum freeze-drying method. Experiments show that the prepared conjugated linoleic acid microcapsule has a complete structure and good thermal stability.

Provided is a drilling mud additive that can provide a drilling mud composition that exhibits an excellent suppression of mud loss at high temperatures and an excellent fluidity and mud cake formation at high temperatures. Also provided is a drilling mud composition that uses this additive.　The present invention provides a drilling mud additive that contains a vinyl alcohol-based polymer that has a vinyl alcohol unit and a vinyl ester unit. This vinyl alcohol-based polymer has a saponification degree of at least 70 mol% and a viscosity-average degree of polymerization of 1000-5000. When a 0.1 mass% aqueous solution of the vinyl alcohol-based polymer is filtered across a membrane filter having a pore diameter of 0.45 μm, the amount of filtered water in 10 minutes is equal to or less than 100 g.

A warm water-dissolvable male type hook-and-loop fastener having a base and a plurality of male hooking elements protruding from the surface of the base, both the base and the male hooking elements comprising a polyvinyl alcohol-based resin having a polymerization degree in the range of 300 to 700 and a saponification degree in the range of 80 to 99 mol%, and both the base and the male hooking elements being dissolved in warm water having a temperature of 45 to 90°C but not being dissolved in water having a temperature of less than 45°C.

The present invention relates to a polyvinyl alcohol structure prepared using heterogeneous saponification induced by an external stimulus, and a preparation method therefor, and, more specifically, to a method for preparing a polyvinyl alcohol structure by using heterogeneous saponification, in which an external stimulus, such as acoustic pressure, is directly or indirectly applied, under tension, to a PVA precursor structure so as to be converted into a PVA structure. Compared to a conventional method, vibration caused by the acoustic pressure increases saponification speed by saponification promotion and smooth circulation, forms nano-sized curves on the surface of the PVA structure resulting from conversion by the reaction, so as to improve specific surface area, thereby increasing water resistance, and can adjust the degree of saponification according to the characteristics of the application field.

The invention provides a method for detecting the content of proinflammatory regression factors (SPMs) in microalgae oil, which comprises the following steps: adding an isotope internal standard substance into a prepared microalgae oil sample to obtain an internal standard sample solution, adding an alkaline reagent into the internal standard sample solution, and carrying out saponification hydrolysis reaction to obtain an alkaline saponification hydrolysis solution; adding an acidic reagent into the alkaline saponification hydrolysis solution, carrying out acidification treatment, and adjusting the alkaline saponification hydrolysis solution to be acidic to obtain an acidified hydrolysis solution; sequentially purifying, concentrating and redissolving the acidified hydrolysis solution to obtain a solution to be detected; performing UPLC-MS / MS detection on the solution to be detected to respectively obtain a first response value of the target component and a second response value of the isotope internal standard substance; and calculating the content of the target component in the microalgae oil sample according to the first response value, the second response value and an internal standard method standard curve. Therefore, the accurate content of the SPMs in the sample can be obtained, and the detection accuracy is improved.

This invention provides a method for separating nickel and magnesium and its application. The separation method includes the following steps: (1) preparing a high-purity extractant and a diluent into an extractable organic phase with a certain volume fraction, and then subjecting the extractable organic phase to a saponification reaction with an alkaline compound to obtain a saponified organic phase; the extractant contains a specific carboxylic acid compound; (2) mixing, extracting, and separating the saponified organic phase obtained in step (1) into a nickel-magnesium feed solution to obtain a loaded organic phase and a raffinate aqueous phase; (3) washing the loaded organic phase with a detergent to remove magnesium ions impurities extracted or entrained, to obtain a washed loaded organic phase and a washing residue; (4) back-extracting the washed loaded organic phase obtained in step (3) with a back-extraction agent to obtain a metal ion enrichment solution and a regenerated organic phase; the entire separation process is simple to operate, has low acid consumption, fast phase separation, and is environmentally friendly; the separation method has a good separation effect on nickel and magnesium, a high separation coefficient, and the extraction reagent used has low water solubility, is stable, and can be recycled after regeneration, which is beneficial to reducing separation costs and is suitable for large-scale application.

The invention provides a flax seed fatty acid rapid extraction and component determination method, relates to the technical field of agricultural chemical analysis, and has the technical key points that the extraction method comprises the following steps: taking flax seeds and crushing; saponification and methyl esterification reaction: weighing the crushed flax seeds in the step S1, placing the flax seeds in a centrifugal tube with a plug, adding a 1% methanol-sodium hydroxide solution, shaking to fully and uniformly mix the sample and the solution, and standing to complete the reaction; neutralizing the alkali in the solution; n-heptane is added into the solution, and generated fatty acid methyl ester is fully extracted. By optimizing an extraction solvent system, innovatively combining extraction and derivatization steps and adopting an efficient instantaneous extraction / reaction technology, the total extraction time is shortened from tens of hours of a traditional method to tens of minutes on the premise of ensuring the extraction efficiency and the methyl esterification conversion rate, meanwhile, the solvent dosage and the operation steps are reduced, and the production cost is reduced. Powerful technical support is provided for quality control, functional food development and genetic breeding of the flaxseeds.

The application provides a composite vegetable oil emulsification system, a preparation method and application thereof, and relates to the technical field of cosmetics.The composite vegetable oil emulsification system is composed of the following components in parts by weight: 40-60 parts of white pool rape seed oil, 20-40 parts of water, 5-15 parts of beeswax, 2-4 parts of sodium carbonate, 0.5-1.5 parts of octyldodecanol, 1.2-2.8 parts of agave sisalina leaf and seed oil, 1.2-2.8 parts of cyperus oil and 0.5-1.5 parts of malva sylvestris root extract; a low-temperature saponification reaction method is adopted, primary saponification can be realized at 45-49 DEG C, then secondary reaction is carried out by heating to 65-75 DEG C to obtain a stable emulsification system. The vegetable oil with specific components is the core, is compounded with cyperus oil and malva sylvestris root extract, the composite vegetable oil emulsification system obtained has multiple effects of mild long-acting moisturizing and high-efficiency anti-inflammatory soothing, has high stability, and has small particle size and PDI.