36 results about "Sodium phenylacetate" patented technology

The invention provides a deformed steel bar slow-release quenching agent which is used for preventing and slowing down deformed steel bar corrosion in air. The invention provides the deformed steel bar slow-release quenching agent which comprises the following components in parts by mass: 2 to 5 parts of sodium sulfate, 4 to 6 parts of sodium hydrate, 1 to 2 parts of starch, 5 to 7 parts of sodium bicarbonate, 6 to 8 parts of sodium phenylacetate, 5 to 8 parts of alum and 60 to 70 parts of water. The invention further provides a method for preparing the deformed steel bar slow-release quenching agent. After the use of the deformed steel bar slow-release quenching agent provided by the invention, deformed steel bar corrosion in air can be effectively prevented or slowed down.

The invention relates to a method for recovering phenylacetic acid from waste liquid in preparation of 6-aminopenicillanic acid by an enzymic method. The method comprises the following steps: 1) using toluene to extract phenylacetic acid; 2) preparing a sodium phenylacetate aqueous solution with little impurity; and 3) using macroreticular resin for recovering phenylacetic acid from a water phase containing low-concentration phenylacetic acid. According to the invention, toluene is extracted from waste liquid in preparation of 6-aminopenicillanic acid by the enzymic method, a toluene phase containing phenylacetic acid and a water phase containing low-concentration phenylacetic acid are obtained; the toluene phase containing phenylacetic acid is extracted through alkali lye to obtain the sodium phenylacetate aqueous solution with high quality, the sodium phenylacetate aqueous solution can be directly used for producing penicillin through fermentation; the water phase containing low-concentration phenylacetic acid is pretreated for recovering sodium sulfate, macroreticular resin is used for absorbing phenylacetic acid for recovery, the low concentration water after adsorption can be directly discharged, zero discharge of phenylacetic acid can be almost realized, win-win of economy and environmental protection can be achieved, the by-product sodium sulfate can be used for fermentation, and also has economic benefit.

The invention provides a method for recycling sodium phenylacetate. The method comprises the following steps: acidifying a pyrolysis waste liquid for producing 6-APA, carrying out extracting with an organic solution, alkalifying an extracted organic phase with liquid caustic soda, separating a water phase, and allowing a separated water phase into a rectifying tower to remove residual organic matters; and carrying out decoloration through active carbon, removing impurities through an ultrafiltration membrane, and carrying out evaporation and concentration so as to obtain a sodium phenylacetatesolution with a concentration of more than 25%. According to the invention, through improvement of the prior art, the method provided by the invention has the following advantages: the purity and yield of a recovered sodium phenylacetate product are improved; the production cost is reduced; the problems of high acidification crystallization cost, a plurality of related hazardous chemicals and thelike in a conventional process are solved; meanwhile, the problems of heavy wastewater discharge and difficulty in treating a waste liquid in an original process are effectively solved.

The invention provides a method for synthesizing phenylacetic acid from carbonyl, and belongs to the technical field of phenylacetic acid synthesis. According to the method, benzyl chloride, sodium hydroxide and CO are taken as raw materials, a tetracarbonyl cobalt-methanol solution is taken as a catalyst, sodium phenylacetate is generated through a carbonylation reaction at a certain temperatureand pressure, and then extraction, acidification, filtration and crystallization are performed to obtain a product, namely phenylacetic acid. According to the invention, the tetracarbonyl cobalt-methanol solution is taken as a catalyst, which has better activity and economy, and is more easily recovered than metal catalysts such as rhodium, platinum, iron, manganese and the like, and the cobalt recovery rate is up to 90% or more than 90%; the process provided by the invention is performed at low pressure and low temperature, the reaction conditions are mild, the material requirements on equipment are low, no poisons or odors are produced during the process, by-products generated are easy to be separated and treated, and the process is less in pollution and environmentally-friendly; the conversion rate of the raw materials is 99% or more than 99%; the yield of phenylacetic acid is 85% or more than 85%; and the purity of phenylacetic acid is 99.0% or more than 99.0%.

The invention provides a preparation method of phenylacetic acid. The preparation method comprises the following steps: 1) adding benzyl chloride and sodium cyanide into a reaction kettle, carrying out heating to 60-120 DEG C for carrying out a cyaniding reaction to obtain an oil phase and a water phase, wherein the reaction time is 2-12 hours, the upper layer is a crude phenylacetonitrile product, and the lower layer is a wastewater layer; 2) adding a strong alkali or a strong alkali solution into the crude phenylacetonitrile product to carry out hydrolysis, controlling the hydrolysis temperature to be 40-120 DEG C, and controlling the pH value of a reaction end point to be 8-13, so as to obtain sodium phenylacetate and ammonia gas, wherein the ammonia gas enters an absorption system; and3) adding sulfuric acid or hydrochloric acid into the sodium phenylacetate obtained in the step 2) to carry out acidification, controlling the reaction temperature to be 20-80 DEG C, controlling thepH value of a reaction end point to be 1-2, precipitating a product by crystallization after the reaction is finished, and carrying out solid-liquid separation to obtain the phenylacetic acid. The preparation method can be used for rapidly and effectively preparing phenylacetic acid, cost is low, and benefits are good.

The invention discloses a production process of high-quality phenylacetic acid, and relates to the technical field of phenylacetic acid production. The production process includes the following steps that 1, benzyl cyanide is added dropwise into a water solution of sodium hydroxide or potassium hydroxide in a reflux state, a water solution of sodium phenylacetate or potassium phenylacetate is obtained through heat preservation, and the pH is adjusted to be 6-8; 2, extraction and impurity removal are carried out, wherein an extraction agent used in extraction is one or more of benzene, alkyl halide and ether organic solvent; 3, the water solution of sodium phenylacetate or potassium phenylacetate obtained after extraction enters an inlet in the upper portion of a desorber, and nitrogen is blown into an inlet in the lower portion of the desorber to desorb and separate the contained organic solvent; 4, activated carbon is used for adsorbing the water solution of sodium phenylacetate or potassium phenylacetate obtained after desorption; 5, water solution of sodium phenylacetate or potassium phenylacetate obtained after adsorption is acidized to obtain high-quality phenylacetic acid. The process can effectively increase the phenylacetic acid content and achieve continuous operation and is high in yield.

The invention provides an all-round cleaning agent. The cleaning agent is prepared from 3-6 parts by mass of mixed sodium salt and 4-5 parts by mass of lauryl dimethyl ammonium oxide, wherein the mixed sodium salt contains sodium xylene sulfonate, sodium benzene sulfonate and sodium phenylacetate in a mass ratio of (2-5):(1-3):(3-6). The all-round cleaning agent has high cleaning effect, attractive product color and excellent cleaning effect on various impurities such as stains, scale, oil stains and the like, and has wide application in industrial and agricultural production and life.

The invention provides a preparation method for phenylacetic acid. The method comprises the following steps: 1) adding benzyl chloride and sodium cyanide into a reaction kettle, raising the temperature to 60-120 DEG C, and performing a cyanation reaction for 2-12h to obtain an oil phase and a water phase, wherein the upper layer is a crude product of phenylacetonitrile, and the lower layer is a waste-water layer; 2) adding a strong alkali or a strongly-alkaline solution into the crude product of the phenylacetonitrile, performing hydrolysis, wherein the hydrolysis temperature is 40-120 DEG C,and controlling the pH at a reaction endpoint to be 8-13 to obtain sodium phenylacetate and an ammonia gas, wherein the ammonia gas enters an absorption system; and 3) adding sulfuric acid or hydrochloric acid into the sodium phenylacetate obtained by the step 2) for acidification, wherein the reaction temperature is 20-80 DEG C, enabling the pH at a reaction endpoint to be 1-2, after a reaction is finished, precipitating a product by crystallization, and performing solid-liquid separation to obtain the phenylacetic acid. The preparation method provided by the invention can quickly and effectively prepare the phenylacetic acid, and has low costs and good benefits.

The invention relates to an additive formula of a monocrystalline silicon texturing liquid containing a polyol and PEG. The additive formula comprises the following components: the polyol, PEG, an organic acid sodium salt, an inorganic salt and deionized water; w herein the polyol is one or a mixture of more of MPD, ethylene glycol, 1, 2-propylene glycol, glycerol and 1, 4-butanediol, and the weight ratio of the polyol to water is (0.5-2.5): 100; the PEG comprises one or a mixture of more of PEG 200, PEG 400, PEG 600, PEG 800 and PEG 1000, and the weight ratio of the PEG to water is (1.0-3.0):100; the organic acid sodium salt is one or a mixture of more of sodium succinate, sodium oxalate, sodium benzoate, sodium phenylacetate and sodium isophthalate, and the weight ratio of the organic acid sodium salt to water is (0.1-1.0): 100; the inorganic salt is one or a mixture of more of NaCl, KCl, Na2SO4, K2SO4 and Na2SiO3, and the weight ratio of the inorganic salt to water is (0.1-1.0): 100. The formula of the monocrystalline silicon surface texturing agent is as follows: 20.0-40.0 mL of a NaOH solution with the weight percentage concentration of 30% is added to 1 L of deionized water,and 8.0-18.0 mL of the additive is added.

The invention relates to an additive for a single-crystal silicon texturing liquid. The additive comprises the following components: polyvinylpyrrolidone (PVP), a glycol salt, a benzene-containing organic acid salt, sodium silicate and deionized water, wherein the PVP is one or a mixture of two or more selected from the group consisting of PVP-K12, PVP-K15, PVP-K17, PVP-K25, and PVP-K30, and the weight ratio of the PVP to the water is (0.2-1.0):100; the glycol salt includes one or a mixture of two or more selected from the group consisting of diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol and tripropylene glycol, and the weight ratio of the glycol salt to the water is (1.0-3.0):100; the benzene-containing organic acid salt is one or a mixture of two or moreselected from the group consisting of sodium benzoate, potassium benzoate, sodium phenylacetate, sodium terephthalate and sodium isophthalate, and the weight ratio of the benzene-containing organic acid salt to the water is (0.1-1.0):100; and the weight ratio of the sodium silicate to the water is (0.1-1.0):100. The single-crystal silicon surface texturing agent is prepared by the following formula: 25.0-45.0 mL of a NaOH solution with a concentration of 30% by weight and 10.0-20.0 mL of the additive are added into 1 L of the deionized water.

The invention discloses an EVA adhesive film for solar cells and a preparation method thereof. The adhesive film includes the following raw materials: ethylene-vinyl acetate copolymer, sodium phenylacetate, nano-carbon, aluminum foam, copper foam, phenalkamine, ethylmethyltrichlorosilane, aluminum tripolyphosphate, ethylene peroxide resin, alkyd resin , castor oil, acetic anhydride, cellulose acetate, carbon tetrachloride, polypropylene alcohol. Weigh raw materials; sodium phenylacetate, nano-carbon, phenalkamine, trichlorosilane, aluminum tripolyphosphate, ethylene peroxide resin, alkyd resin, castor oil, acetic anhydride, cellulose acetate, carbon tetrachloride , polypropanol into the reaction kettle, heating and melting while stirring to obtain the first mixture; put ethylene-vinyl acetate copolymer and the first mixture into the three-roll blender to extrude the masterbatch, and stretch it on the copper drum to obtain the film. The EVA adhesive film of the invention has high transparency, good weather resistance, low melting point and anti-aging, and the solar cell prepared by using the adhesive film has a long service life.

The invention discloses an injection medicine composition of tetrandrine. The injection medicine composition is characterized in that salt of tetrandrine is dissolved into injection water, and phenylacetic acid and/or sodium phenylacetate is used as a pH (potential of hydrogen) adjuster and is added to adjust the pH value of medicine liquid, so as to obtain the injection medicine composition; theusage amount of the phenylacetic acid and/or sodium phenylacetate is 0.1mg to 200.0mg/100ml. The injection medicine composition has the advantages that the pH value of the injection liquid is more stable; compared with the prior art, the content of degrading matters of the tetrandrine is greatly reduced; under the condition of avoiding using other cosolvents increasing the clinical application risk, the clarification degree of the tetrandrine injection liquid is improved, and especially the problems of small white spots, white blocks, and solution turbidity under the condition of longer storage time are solved when the tetrandrine injection liquid adopts the prior art product; after checking, the content of visible foreign matters in the product meets the requirement of medicine quality standard, and the injection medicine composition is suitable for clinical medicine application and popularization.

The invention discloses an in-situ carbonylation method straight-through liquid sodium phenylacetate synthesis method, which comprises the following steps of adopting cobalt salt and carbon monoxide as raw materials, adopting methanol as a solvent, adopting sodium thiosulfate, sodium sulfide and manganese metal as auxiliary materials, and carrying out low pressure synthesis under a stirring condition to obtain a cobalt carbonyl catalyst, introducing carbon monoxide into the catalyst system, adding benzyl chloride and liquid caustic soda in situ, and carrying out low-pressure synthesis under astirring condition to obtain sodium phenylacetate, carrying out in-situ aeration, cobalt and manganese precipitation and solid-liquid separation in a synthesis system, collecting a separation solution, and distilling to obtain a distilled concentrated solution, and performing decoloration, salt leaching and concentration on the distilled concentrated solution to obtain a sodium phenylacetate concentrated solution which can be directly used for penicillin fermentation. The synthesis method disclosed by the invention is simple to operate, continuous in process unit, free of repeated process units in the process and in accordance with atom economy, and the prepared sodium phenylacetate is high in purity and high in yield. No acidic wastewater is generated in the process treatment process, nophenylacetic acid containing peculiar smell is generated, the wastewater treatment cost is low, and the process is environmentally friendly.

The invention relates to a safe environmental-friendly cleaning solution which is prepared from the following raw materials in parts by weight: 4-8 parts of polyoxyethylene sorbitan monooleate, 2.5-6 parts of 1,3-dimethyl-2-imidazolone, 1.5-6 parts of amide biphthalate, 2.3-7 parts of fatty acid polyoxyethylene ether, 3.6-8 parts of p-hydroxy sodium phenylacetate, 1.3-4 parts of triethanolamine, 4.4-8.7 parts of polydimethyl siloxane fluid, 4.1-7.6 parts of lauryl sodium sulfate and 3.4-6.7 parts of butyl methacrylate. The safe environmentally friendly cleaning solution disclosed by the invention has the beneficial effects of being safe and environmentally friendly, reducing the pollution on the environment, meeting the requirement on cleaning, completing the cleaning of equipment and being widely applied to metal equipment, composite metallic materials and the like.

The invention discloses a gingerol pharmaceutical composition for injection. The pharmaceutical composition for injection is prepared mainly by the steps of dissolving salt of gingerol into water forinjection, adding phenylacetic acid and/or sodium phenylacetate as pH regulator(s) for regulating the pH value of liquid medicine, wherein the dosage of the phenylacetic acid and/or the sodium phenylacetate is 0.1-200.0mg/100ml. The gingerol pharmaceutical composition can enable the pH value of injection to be more stable, and greatly reduces gingerol degradation substances compared with the priorart; under the premise of avoiding the use of other co-solvents which increase the risk of clinical application, the clarity of the gingerol injection is improved, and the problems that the ginger injection prepared from the products in the prior art has small white spots, white blocks and turbid solution after being stored for a long time can be particularly solved, and the visible foreign matter examination of the product is enabled to be in compliance with the provisions of the drug quality standards; therefore, the gingerol pharmaceutical composition for injection is convenient for clinical medication and promotion.

Disclosed is a screen detergent. The screen detergent is mainly prepared from 3-8 parts of hydroxybutyric acid, 10-15 parts of mint juice, 5-10 parts of dioxide, 4-8 parts of sodium phenylacetate, 9-11 parts of castor oil, 8-16 parts of pyrrolidone, 5-10 parts of tri-ethyl alcohol, 10-24 parts of dihydroterpinyl acetate, 10-22 parts of tableware cleaning agent, 3-8 parts of polyoxyethylene, 1-12 parts of acrylic acid, 3-8 parts of ethyl alcohol, 8-12 parts of osmanthus flower fragrance, 6-12 parts of propionitrile, 6-13 parts of alcohol, 5-15 parts of phosphoric acid, 1-5 parts of polyethylene, 8-15 parts of dioxidase, 7-18 parts of pyrimidine, 20-29 parts of sorbic acid, 8-14 parts of amyl alcohol, 10-16 parts of sunflower dew, 8-18 parts of loquat leaves and 8-15 parts of aluminum oxide.The detergent can clean a screen conveniently and more thoroughly, is good in decontamination effect and convenient to use and does not damage hands.

The invention discloses a chromium-free passivator. Every 1 l of the chromium-free passivator is prepared from components by mass including 50% of amino silane or/and epoxy silane, 2% of polyacrylic acid, 5% of tetraethoxysilane, 5% of starch, 5% of sodium phenylacetate, 2% of polyurethane, 8% of melamine, 1% of cold-drawn polypropylene fibers, 4% of phosphorus-containing polyalcohol, 3% of polyamide polyethylene glycol, 1% of sodium bicarbonate, 3% of starch phosphate, 2% of isopropanol, 5% of polyurethane, 3% of liquid paraffin, 2% of iron oxide yellow, 1% of rare earth ions, 1% of barium dioxide nano-particles and the balance water. According to the passivator, as multiple kinds of organic phosphoric acid, multiple kinds of metal ions and multiple kinds of nano-particles are chelated todifferent degrees, on one hand, the thickness and the density of a passivation film can be enhanced; and meanwhile the passivation film (inorganic film) obtained after chelating is completed can display colors to a certain degree on the surface of an aluminum alloy.