257results about How to "Guaranteed Solubility" patented technology

The invention opened a preparing method of the cellulose fibre spinning stock solution. The solvent is the intermixture of the [BMIM]Cl and the [BMIM]BF4. The cellulose dissolves in the solvent after breaking up to get the uniform and transparent liquid. So it can save the energy, decrease the pollution and improve the quality of the stock solution.

An instant naked oats powder as solid beverage for the patients of hyperlipomia and diabetes is prepared from naked oats through removing impurities and fine fibres, soaking in hot water, grinding, adding alpha-amylase, auxiliary materials and emulsifier, homogenizing, emulsifying, and spray drying. Its advantages are high dissolving speed and solubility (more than 89.44%), and rich gamma-linolenic acid.

The invention discloses a technology for advanced oxidization treatment of wastewater through complex ferrous activated persulfate or hydrogenperoxosulfate by multicomponent blending, and belongs to the field of water pollution control technology. According to the technology, a blending complexing agent is selected according to different water quality, and the mixing ratio of the blending complexing agent is controlled; the coordination space of active center irons is fully utilized to improve the stability of a complex compound, and thus the organic matter treatment efficiency of complex Fe2<+> catalyzed and activated sulfate or hydrogenperoxosulfate can be effectively improved. By blending, the pH (Potential of Hydrogen) range of complex Fe2<+> catalyzed and activated sulfate or hydrogenperoxosulfate is further expanded, relatively high pollutant removal rate can be kept at high pH condition, and the output of iron cements is decreased. The novel technology for the advanced oxidization treatment of the wastewater through complex ferrous activated persulfate or hydrogenperoxosulfate by multicomponent blending is high in efficiency, easy in operation, and applicable to the water treatment technology of organic wastewater with high pH (Potential of Hydrogen), and has a wide application potential in the field of advanced treatment of the wastewater.

The invention relates to a nano-fibrosis silk fibroin gel and a preparation method of the nano-fibrosis silk fibroin gel. Silk is degummed and then dissolved in salt-formic acid to obtain a silk fibroin solution; a silk fibroin-salt-formic acid solution is injected into a mould; the mould placed with the silk fibroin solution is immersed in an organic solvent or an aqueous solution, and stood for a certain time to form the silk fibroin gel. The preparation method disclosed by the invention is simple in preparation method, short in process, convenient to operate and easy for realization of batch production. The silk fibroin gel prepared by the invention has a natural bionic nanometer fibrillar structure, and is adjustable in mechanical properties and good in biocompatibility.

The invention belongs to the field of pharmaceutical preparations, in particular to an edaravone injecta and a preparation process thereof. The edaravone injecta contains edaravone and pharmaceutically acceptable auxiliary materials and is characterized in that the injecta contains an antioxidant and a pH regulator, wherein the antioxidant contains phosphate, L-cysteine hydrochloride and sodium bisulfite. A whole-process nitrogen-filing and oxide-emitting method and a post-sterilization rapid cooling method are adopted in the preparing and filling process of the edaravone injecta to improve the stability of the edaravone injecta, remarkably reduce the content of a related substance, i.e., dimmer and provide the stable and safe edaravone injecta for clinical administration.

The invention relates to a method for preparing a nano-palladium electro-catalyst by ethanol reduction. The method reduces PdCl2 (palladium chloride) to metal Pd (palladium) nano-particles by the aid of ethanol reduction and action of cosolvent, and includes the steps: firstly, preparing ethanol water; secondly, adding PdCl2 powder and protective agents into the ethanol water, feeding shielding gas, heating and stirring to enable palladium positive ions to generate reduction reaction so that the Pd nano-particles are obtained; and thirdly, performing centrifugal separation after reaction is finished to obtain black precipitates, and washing by ethanol and acetone prior to drying so that the nano-palladium electro-catalyst is obtained. The nano-palladium electro-catalyst is synthesized in one step in a normal-temperature environment by using the ethanol water as a solvent and utilizing the reduction action and the solvent effect of the ethanol without additionally adding chemical reduction agents such as ascorbic acid and by means of magnetic stirring and water-bath heating to guarantee solubility of the PdCl2. The method is low in cost, environment-friendly and simple and feasible in operation process, and the prepared nano-palladium electro-catalyst is high in yield and centralized in particle size distribution and has good application prospect.

The invention relates to a high temperature resistance hot-melt pressure-sensitive adhesive, which is characterized by comprising 12-13% of natural rubber, 12-13% of petroleum rubber, 20-22% of petroleum resin, 20-22% of terpene resin, 10-11% of alkyl phenolic resin, 14-15% of naphthenic oil, 3.0-3.5% of rubber accelerator and 1-3% of anti-aging agent. By the above technical scheme, solubleness, thermoplasticity and rebound resilience of the SBS series pressure-sensitive adhesive can be ensured, and the high temperature softness and cohesiveness of the pressure-sensitive adhesive can be enhanced.

The invention relates to a sulphur removal corrosion inhibitor, which is prepared from the following components in percentage by weight: 26% of calcium gluconate, 18% of ferrous sulfate, 10% of basic zinc carbonate, 9% of stearic amide and the balance of water. The sulphur removal corrosion inhibitor is insensitive to the pH value, has no effect on the rheological behavior of drilling fluid and simultaneously has good compatibility with other finishing agents in the drilling fluid. Ferrous ions in the sulphur removal corrosion inhibitor are easy to absorb by organic matters, a complex compound of the ferrous ions and organic acid is environment-friendly, and the discharge of drilling cuttings and the drilling fluid containing iron ion filtrate cannot cause environmental problems.

A cadmium-reducing charcoal-based multi-element compound soil conditioner for paddy rice and applications thereof are disclosed. The soil conditioner includes rice hull charcoal, a rice hull extract liquid, a cytokinin producing strain agent, humic acid raw powder and sepiolite. The soil conditioner can be used for paddy rice fields of each paddy rice producing area, increases the pH value of acidified soil after continuous paddy rice cropping, and reduces the cadmium content of rice grains, thus improving rice quality. In addition, environment pollution in a rice hull charcoal production process can be overcome, high-value production of the rice hull charcoal is directed and the added value of the rice hull charcoal is increased.

The invention discloses puerarin-rich instant arrowroot and a preparation method thereof, and belongs to the technical field of agricultural product processing. The puerarin-rich instant arrowroot comprises the following ingredients: 80-95 parts by weight of arrowroot starch, 2-20 parts by weight of arrowroot water extract, and 0.01-0.1 part by weight of sucralose. The preparation method comprises the following steps: uniformly mixing a sucralose water solution and the arrowroot starch according to the ratio; adjusting the water content to 11-13%; performing puffing cooking, wherein the puffing temperature is 135-145 DEG C and the puffing speed is 0.5-1 m / min; drying, wherein the drying temperature is 80-90 DEG C and the drying duration is 2-5 h; smashing, and screening with a 80-100 meshed sieve to obtain instant arrowroot starch; uniformly mixing the arrowroot water extract and the instant arrowroot starch according to the ratio; pelletizing through a drying method; smashing, and screening with a 60-80 meshed sieve to obtain puerarin-rich instant arrowroot. The puerarin mass content of the instant arrowroot provided by the embodiment of the invention is larger than 15 mg / g, and the puerarin-rich instant arrowroot has a good taste, and a good appearance, and is good in instant property.

The invention discloses an ink-jet printing preparation method of an organic solar battery optical active layer film, in order to solve the problems that the surface height fluctuation of the organic solar battery optical active layer film obtained by the conventional preparation method is too high, and the solution drying rate is too slow. The method comprises the following steps of: forming a mixed solvent by adopting a base solvent and an additive solvent; then adding an electron donor material P3HT and an electron acceptor material PC61BM into the mixed solvent so as to form a mixed solution; depositing the mixed solution to the surface a base which is provided with a hole injection layer and a transparent conducting layer through an ink-jet printing device; and drying the solution, thereby obtaining the organic solar battery optical active layer film, wherein the base solvent is chlorobenzene, the additive solvent is orthodichlorobenzene, tetrahydronaphthalene, trimethylbenzene or chloronaphthalene. The optical active layer film formed by the method provided by the invention is low in surface roughness degree, is low in largest surface height fluctuation, and is small in phase separation dimension; a micro crystal structure can be formed in a P3HT phase; and the film during the processing course is easy to dry.

The invention discloses a water-based ink thermal transfer ribbon which comprises a base, a release layer, an ink layer and a heat resistant coating, wherein one side of the base is coated with the release layer, the outer side of the release layer is coated with the ink layer, and the other side of the base is coated with the heat resistant coating; the ink layer is prepared from the following raw materials in parts by weight: 14-17 parts of waterborne polyurethane resin, 10-15 parts of epoxy resin, 18-23 parts of acrylic resin, 15-20 parts of carbon black, 8-12 parts of copper chromite black, 22-26 parts of kaolin, 9-13 parts of quartz powder, 2-5 parts of diatomite, 5-8 parts of polyethylene wax, 0.7-1.5 parts of polysiloxane defoaming agents and 0.5-1.0 part of chitosan. The invention further discloses a preparation method of the water-based ink thermal transfer ribbon. The prepared thermal transfer ribbon is free from toxic solvents such as methylbenzene and butanone, operating environments can be favorably improved, health of workers is ensured, and environmental protection requirements are met.

The invention relates to a preparation method and a preparation system of trimanganese tetraoxide. The preparation method comprises: introducing micro-nano gas bubbles into a reaction liquid mixture containing a manganese source to obtain a liquid-gas mixture containing the micro-nano gas bubbles and the reaction liquid mixture, and carrying out a reaction to obtain trimanganese tetraoxide, wherein the micro-nano gas bubbles contain oxidizing gas, and the average valence of the manganese in the manganese source is less than 8 / 3. According to the present invention, by introducing the micro-nanogas bubbles containing the oxidizing gas into the reaction system containing the manganese source, the oxidation reaction rate is improved, and the oxidation reaction time is shortened; and the generation rate of the trimanganese tetraoxide is increased, the particle size of the trimanganese tetraoxide is reduced, the develop integrity of the trimanganese tetraoxide crystal is improved, and the defect of the crystal is reduced.

Provided is a method of manufacturing high-purity, high-quality manganese sulfate which can be immediately used for manufacturing a lithium ion secondary battery from manganese sulfate waste liquid of a wasted battery. Since impurities are removed from the manganese sulfate waste liquid by using sulfides causing no secondary contamination in the manganese sulfate waste liquid and the manganese sulfate is manufactured by performing evaporation concentration through heating, the manufacturing method is very environment-friendly and economical. Since the manganese recovering process improving the manufacturing yield of the manganese sulfate and the waste water treatment process capable of recycling the source materials and discharging waste water are integrated, the manufacturing method is very efficient and environment-friendly. The manufacturing method is applied to the recycling industry, and thus, it is possible to obtain effects of preventing environmental pollution and facilitating recycling the resources.

The invention discloses an industrial hempseeds isolate protein powder of which the protein purity is above 92%. The invention also provides a preparation method of the industrial hempseed isolated protein powder, comprising the following steps: (1) purifying and decorticating industrial hempseeds according to grading, and obtaining low temperature protein meal by CO2 supercritical fluid extraction; (2) dissolving the desolventized protein meal in alkaline liquor, adjusting the PH value to 8-10 to obtain protein emulsion, removing insoluble residue and fibre by filtering; (4) taking supernatant liquor and adding acid liquor to adjust the PH value to 4.5-5, centrifugalizing to take the precipitation; (5) adding alkaline liquor to adjust the PH value to 6-7, obtaining the industrial hempseeds isolate protein powder by spray drying. The invention has the advantages of simple process, low cost and high protein extraction efficiency. The produced industrial hempseeds isolate protein powder has high nutritional value and a wide application prospect.

The invention provides a novel maltodextrin production process, which uses starch as raw materials. Through a liquidation work procedure, a saccharification work procedure, a deslagging and decoloringwork procedure, an ion exchange work procedure, an evaporation concentration work procedure and a spray drying work procedure, maltodextrin with a low DE value is obtained. The DE value of the maltodextrin product is 6 to 8, wherein in the liquidation work procedure, a processing process using three times of spraying, twice enzyme adding and three sections of maintenance is used for processing the starch. The maltodextrin production process has the advantages of practicability and high applicability. The maltodextrin with the low DE value (the DE value is 6 to 8) produced by the maltodextrinproduction process has the advantages that the product quality is stable; the appearance is uniform; no maltodextrin retrogradation occurs.

A somatostatin injection is prepared by ultrafilter technique and features high purity, solubility and stability.

The invention discloses a compound represented by the formula 1 and / or the formula 2, and a preparation method and an application thereof. In the formula 1 and the formula 2, a is 4-10, b is 4-12, R1 is C1-C4 alkylene, x is 4-10, M<2+> is a divalent metal ion, n is 100-200, and m is 20-30. The preparation method includes the following steps: 1) carrying out a condensation reaction of a reactive flame retardant and a diacid monomer in deionized water, to obtain a prepolymer; 2) putting the prepolymer obtained in step 1) and a polymeric monomer in deionized water, and carrying out a polymerization reaction in a reaction kettle, to obtain a reaction product 1; 3) carrying out decompression and water drainage on the reaction product 1, to obtain a reaction product 2; and 4) carrying out a reaction of the reaction product 2 in the reaction kettle in the step 3) in vacuum, to obtain the compound represented by the formula 1 and / or the formula 2. The obtained novel flame-retardant polyamide is prepared by using the reactive water-soluble flame retardant, the preparation reaction process is easy to control, and the flame-retardant polyamide has permanent flame retardancy.

The invention provides erythromycin thiocyanate soluble powder and relates to the field of veterinary medicine. The erythromycin thiocyanate soluble powder is prepared from, by mass, 1%-20% of erythromycin thiocyanate, 2%-40% of sodium citrate, 1%-20% of citric acid, 1%-5% of sodium dihydrogen phosphate, and the balance auxiliary materials. The invention further provides a method for preparing the erythromycin thiocyanate soluble powder. The prepared erythromycin thiocyanate soluble powder is good in solubility in water, the solubility of the erythromycin thiocyanate soluble powder in water reaches 5 g / L (counting as erythromycin), and the solubility of the erythromycin thiocyanate soluble powder in water is greatly increased. A water solution obtained after the erythromycin thiocyanate soluble powder is dissolved in water is very stable at the temperature of 25 DEG C and under the light shielding condition, and the degradation amount after 4 h is smaller than 5%.

The invention discloses an ultrasonic radiation preparation method for a chrysanthemum-like nano-palladium aggregate material. The method comprises the following steps of: adding water and ethanol into a reactor; then adding PdCl2 powder and a surfactant-macromolecule combined system soft template; under protection of nitrogen, performing ultrasonic reaction; after the reaction is finished, performing centrifugal separation to collect sediments; and washing by using ethanol and acetone, and drying in vacuum to obtain the nano-palladium aggregate material. Under the reduction action of the ethanol and the action of a cosolvent, and under the condition that a chemical reducing agent such as sodium borohydride and ascorbic acid is not added, the chrysanthemum-like nano-palladium aggregate material is synthesized; the reaction rate is easy to control; the cost is low; and the operation process is simple and feasible. The size of the prepared chrysanthemum-like nano-palladium aggregate material is 60 to 100 nm.

The invention relates to a novel intelligent efficient fertilizer mixer. The novel intelligent efficient fertilizer mixer comprises a fertilizer mixing device and a central controller; the fertilizermixing device comprises a fertilizer mixing tank, a rack, a water pump, a stirrer and a transfusion pipeline; an electromagnetic valve I and a liquid particle measurement instrument sensor are sequentially arranged on the transfusion pipeline up and down; the left side and the right side of the tail end of the transfusion pipeline are respectively communicated with a fertilizer liquid circulatingpipeline and a fertilizer liquid output pipeline; a liquid storage tank is used for storing a fertilizer liquid needing secondary stirring; the stirrer comprises a connecting rod shaft, a stirring knife disc and a stirring rod, and stirring rods are evenly vertically arranged on the stirring knife disc along the peripheral direction. By designing and optimizing the stirrer, the particle pulverizing capability and the stirring capability are improved, a singlechip computer is used to control the fertilizer mixer to mix the fertilizer, the size of the particle in the mixed fertilizer liquid is identified through a liquid particle measurement instrument sensor to control to discharge the fertilizer liquid or circularly stir secondarily, the solubility of the fertilizer liquid is guaranteed, and the fertilizer applying effect is improved.

The invention relates to a novel preparation method for a developing solution. The method comprises the following steps: (1) stirring and dissolving salicylate in benzyl alcohol, thereby obtaining a solution a; (2) increasing the temperature of the solution a to 40-46 DEG C, adding a main developing agent formed by mixing isopropyl amine with triethylene tetramine, and stirring for 18-25min at the stirring rate of 800r / min, thereby obtaining a solution b; (3) maintaining the solution b at 40-46 DEG C, successively adding a wetting agent, glycerine ethoxylate and 2-phosphono butane-1,2,4-tricarboxylic acid, and stirring for 8-13min at the stirring rate of 200r / min, thereby obtaining a solution c; and (4) adding deionized water and citrate into the solution c, uniformly stirring, and adjusting and maintaining the solution temperature within 22-25 DEG C, thereby finally obtaining the developing solution. The preparation method has the advantages of simple and effective operation steps, excellent developing effect and difficulty in turbidity of the prepared developing solution.

The invention relates to a green tea beverage and a preparation method thereof. The green tea beverage comprises 3%-4% of tea leaves, 0.02%-0.04% of vitamin C, 0.01%-0.03% of honey, 0.02%-0.05% of aminoacetic acid, 0.03%-0.05% of sodium hexametaphosphate, 2%-3% of edible sugar and the balance water. The green tea beverage is prepared by the steps of smashing, extracting and filtering tea leaves, mixing the tea leaves with auxiliary materials and performing high-temperature instantaneous sterilization, hot-filling and the like. The green tea beverage is simple in processing technology, low in production cost and low in energy consumption, special extraction technology is adopted to improve concentration, color and luster, fresh and bright degree and dissolubility of green tea products, the taste of Pu'er tea is reserved to the most extend, and market promotion is facilitated.

The invention discloses a food and drug inspection and dissolution device and relates to the technical field of food and drug inspection. The device comprises a base, a mixing box and a box cover, thebottom of the mixing box is fixedly connected with the top of the base through a bracket and screws, the surface of the top of the mixing box is in threaded connection with the interior of the box cover, the top of the box cover is fixedly connected with a water injection pipe, and the top of the water injection pipe is communicated with a water inlet pipe. According to the food and drug inspection and dissolution device, the mixing box and the box cover after dissolution can be cleaned, and the cleaning angles of high-pressure nozzles on second fixing pipes are adjusted conveniently by a user, so that the dissolution effect on food and drugs is ensured, pollution caused by residual food or drugs to dissolution in the next time is avoided, the accuracy of test results is improved to a certain extent, the overall practicality is high, to-be-tested food or drugs can be quickly dissolved, time is saved for the user, and convenience is provided for the user to carry out operation.

The invention discloses a device for preparing a high-viscosity polyvinyl alcohol resin solution. The device is characterized by comprising a barrel unit, a stirring unit and an instrument-controlled detection unit, wherein the barrel unit is a pressure container; a jacket for circularly flowing a heat transfer medium is arranged on the outer surface of the barrel unit; the stirring unit drives a stirrer inside the barrel to rotate by connecting a motor above the barrel unit with a hollow stirring shaft stretching into the barrel through a speed reducer; a junction of the hollow stirring shaft and an upper sealing head is sealed by a double-end surface mechanical sealing structure for a kettle; the instrument-controlled detection unit comprises a thermometer, a viewing window and a liquid level detector which are arranged on the barrel, and a pressure meter and a safety valve which are arranged at a gas inlet of the upper sealing head. The device can prepare the high-viscosity polyvinyl alcohol resin solution from a high-polymerization polyvinyl alcohol resin raw material under a high-temperature and high-pressure condition; and the concentration uniformity of the solution in a high viscosity state can be ensured.

The invention belongs to the field of food processing technology, and particularly relates to a vegetarian nutritional powder and a preparation method thereof. The vegetarian nutritional powder comprises cooked cereal powder, a nutrition regulating agent, and a flavor regulating agent, wherein the granularity of 80% of nutritional powder is smaller than 120 meshes, and the granularity of 100% of nutritional powder is smaller than 100 meshes; the content of protein is greater than 20%, the content of GABA (gamma-aminobutyric acid) is greater than 500mg / 100g, and the content of VB (vitamin B) isgreater than 2mg / 100g; the cereals comprise grains and potatoes, the grains comprise brown rice, corn, millet, coix seeds, oats, barley, green beans, red beans, black beans and polished rice, and thepotatoes comprise yam, lotus root, and kudzu root. The preparation process comprises the following steps of (1) cleaning of the raw materials; (2) nutrition conditioning; (3) drying; (4) crushing; (5) nutrition and flavor compounding; (6) bacteria reduction; (7) packaging. The vegetarian nutritional powder has the characteristics that the target nutrients are enriched through nutrition conditioning, so that the target nutrients can fully meet the requirements; the vegetarian nutritional powder is uniform and fine, the solubility is good, the absorption effect is good, the mouth feel is good,and the like; any artificial synthesis matter is not manually added in the processing process, and the healthier effect is realized.

The invention discloses a core-shell polymer suitable for oilfield produced water and a preparation method of the core-shell polymer. The core-shell polymer takes functional polyamide-amine hybrid ultrafine silicon dioxide as the core, acrylamide and acrylic acid as hydrophilic monomers, and methyl-N,N-dihexyl(octyl)acrylamide as a hydrophobic monomer, a redox system triggers polyreaction to prepare hydrogel, and drying, crushing and screening are performed to obtain the core-shell polymer. Preparation of functional polyamide-amine hybrid ultrafine silicon dioxide comprises surface modification of a coupler to ultrafine silicon dioxide, polyamide-amine hybridization of ultrafine silicon dioxide, and functional modification of polyamide-amine hybrid ultrafine silicon dioxide. The core-shell polymer adopts a branched structure, and after dissolution in oilfield produced water, the supermolecule effect on a hydrophilic chain can form a reversible network structure to guarantee the viscosity increasing capability, so that the shearing resistance and the long-term stability of the polymer are improved, and the purpose of produced water injection allocation with polymer for reservoir oil displacement is achieved.

The invention relates to a process method for removing arsenic from feed-grade calcium hydrogen phosphate prepared from wet-process phosphoric acid. The process method comprises the following steps of: 1) adding a sodium sulfide or calcium sulfide solution into neutralized slurry by using an adjustable pressure metering pump until the solution reaches a position which is 50cm away from the liquid level of the neutralized slurry; 2) desulfurizing by an air stripping method, namely removing hydrogen sulfide (H2S) from slurry at the bottom of a thickener by using a desorption tower; 3) recovering the H2S in tail gas to generate a mixed solution of calcium sulfide and sodium sulfide by using lime water and liquid caustic soda in a molecular ratio of Ca(OH)2 to NaOH of 1:1 as washing water of a tail gas washing tower, wherein the washing water of the tail gas washing tower is used as a raw material of an arsenic remover for the neutralized slurry in a section I and recycled after the concentration of the washing water is qualified; and 4) adding the sodium sulfide or calcium sulfide solution into the last one or two reaction tanks for one-stage neutralization of the wet-process phosphoric acid. The process method has the advantages that the content of the H2S in the slurry is reduced to about 3ppm, and the slurry does not have the odor of the H2S; and arsenic removal cost is reduced by more than half compared with that of a treatment method in which lime is not used.

The invention discloses a high efficient composite desulfurization corrosion inhibitor and a preparation method thereof. The desulfurization corrosion inhibitor is prepared from the following components in parts by weight: 22 parts of ferrous gluconate, 18 parts of ferrous sulfate, 30 parts of zinc oxide, and 10 parts of stearamide. The desulfurization corrosion inhibitor can be highly dissolved in a water based drilling fluid; when the pH value is 12, precipitation is difficult to happen; and when the pH value of a drilling fluid system is 9-10 and the temperature is 70 DEG C, the desulfurization rate can reach 99.4%. At the same time, divalent iron ions can be easily absorbed by the organic substances, the formed complex, drilling fluid containing iron ion filtrate, or the drilling cuttings will not pollute the environment, and the content of H2S in crude oil and natural gas is reduced effectively.

The invention belongs to the technical field of phenolic resin synthesis and discloses phenolic resin modified by butyronitrile latex and anacardol and a preparation technology thereof. The preparation technology comprises the following steps: a stirring mechanism is started; pre-heated phenol is pumped into a reaction kettle under a pressure reduction state; anacardol and acidic phenolic wastewater are pumped into the reaction kettle; an acid catalyst is added to enable the PH value of a system to be 1 to 2; when the reaction kettle is heated and warmed to 85 DEG C, solid formaldehyde is poured into the reaction kettle, and the temperature in the reaction kettle is controlled to be from 85 DEG C minus 2 DEG C to 85 DEG C plus 2 DEG C; heat preservation is performed for 40 minutes, and then the reaction kettle is heated slowly until boiling; the boiling state is maintained for 3.5 hours, and the PH value is adjusted to be 7 to 8 by a sodium hydroxide aqueous solution; the butyronitrile latex is added, and EBS is added for stirring and discharging after pressure reduction dehydration is performed for washing free phenol, so that modified phenolic resin is obtained.