119 results about "Acid salt" patented technology

Mobile or stationary air filter (L) or room fan (RL) according to Figure 1, comprising an outer wall (5), a (2) for generating an airflow (3) which is guided through an air filter material (1.1), an air inlet (2.1) and an air outlet (2.2), wherein the air filter material (1.1) contains poly(styrenesulfonic acid) (sulfonic acid biocide) (1.3) cross-linked with divinylbenzene and / or an acidic salt (1.3.1) (sulfonic acid biocide salt) of the sulfonic acid biocide (1.3) with biocidal cations, wherein the sulfonic acid biocide (1.3) and / or sulfonic acid biocide salt (1.3.1)(i) are positively and / or materially bonded to and / or in inert carriers and, in the fixed state, are in direct contact with carrier materials (1.1.7) on and / or in which biocidal Metal microparticles of a mean particle size d50 of 0.1 µm to <1,000 µm are fixed, and / or (ii) with carrier materials (1.1.7) on and / or in which biocidal metal microparticles of a mean particle size d50 of 0.1 µm to <1.000 µm are fixed, are mixed; its use and methods for the production and environmentally friendly disposal of air filter materials (1.1).

The invention relates to a talcum powder filled polypropylene composite material based on surface modification and process cooperation and an injection molding pocking mark defect inhibition method. The material is composed of co-polypropylene, acidic salt-titanate composite modified talcum powder, flaky mica (5-10 [mu] m), a POE flexibilizer, a zeolite molecular sieve, an MAH-g-PP compatilizer, a zinc stearate dispersant and the like. According to the invention, the three measures of surface modification treatment, formula design and process purification technology are combined, and the problem of pitting defects (surface pits and white spots) generated in the injection molding process of the talcum powder filled polypropylene composite material is mainly solved. Through filler surface modification treatment, formula design and a process purification technology, the hard spot defect rate is reduced by about 85%, and the method is suitable for products with high surface quality requirements, such as automobile bumpers and instrument panels.

This invention discloses a method for preparing and analyzing trans-4-aminocyclohexylacetic acid. The preparation method is as follows: 4-nitrophenylacetic acid undergoes catalytic hydrogenation in a solvent, followed by filtration. The filtrate is then treated with acid to obtain a 4-aminophenylacetic acid salt solution. The collected catalyst is activated. The 4-aminophenylacetic acid salt solution is mixed with isopropanol, barium hydroxide, tetrabutylammonium bromide, 18-crown ether-6, and dibutyl phthalate. The activated catalyst is then added to initiate a catalytic hydrogenation reaction. After the reaction, the reaction solution is cooled and filtered. The resulting solid is mixed with a preheated dilute sulfuric acid solution and stirred to form a slurry. The mixture is then filtered, and the filtrate is neutralized and filtered again. The collected filtrate is concentrated and crystallized. The crystallized precipitate is washed and dried to obtain trans-4-aminocyclohexylacetic acid. The method provided by this invention has high reaction efficiency, mild conditions, and is suitable for industrial production. It yields high product purity and reliability. Furthermore, the analytical method provided by this invention is accurate and reliable.

The present invention provides a water-based surface preparation agent composition that combines paint film stripping and rust removal properties. [Solution] This is a surface preparation agent composition for removing rust along with the existing paint film when repainting an existing paint film applied to existing steel materials. It contains at least benzyl alcohol, a hydroxy acid, and water. The hydroxy acid is citric acid, malic acid, or an acidic salt thereof. Furthermore, it contains hydroxyethyl cellulose as an emulsifier for benzyl alcohol. The pH is preferably 4.0 to 6.0. This water-based surface preparation agent composition is applied to the existing steel material to remove rust along with the existing paint film.

The invention relates to an acid salt of a compound shown as a formula (I), in particular to a hydrochloride of the compound shown as a crystalline form (I) and a preparation method and application of the hydrochloride, and the compound is a PD-1 / PD-L1 inhibitor with the structure of the compound shown as the formula (I). The acid salt of the compound as shown in the formula (I) has improved dissolving capacity in a biological medium, and particularly, the crystalline compound hydrochloride has moderate hygroscopicity, good crystallinity, good solubility and stable physicochemical properties, which all meet the industrial production requirements and meet the development requirements of clinical pharmaceutical preparations. The acid salt or crystalline compound hydrochloride of the compound shown in the formula (I) can be widely applied to preparation of drugs for treating PD-1 / PD-L1 signal channel mediated tumors, immune related diseases and disorders, infectious diseases, infectious diseases or metabolic diseases.

The invention belongs to the technical field of nylon 66 polymer performance testing, and particularly relates to a method for simultaneously testing the content of iodide ions and bromide ions in a nylon 66 polymer, which comprises the following steps of: extracting the iodide ions and the bromide ions in the polymer by using weak acid salt (sub-carbonate or bicarbonate) instead of potassium nitrate as an ionic strength regulator; the acid environment in the extracted solution is adjusted with formic acid, silver nitrate is adopted as a titrant, iodide ions and bromide ions in the extract liquor are detected at the same time through potentiometric titration, and the problem that the iodide ions and the bromide ions cannot be detected at the same time is solved.

The invention relates to the technical field of metal surface protection materials, in particular to a composite antirust agent with mildew-proof and antirust performance and a preparation method thereof.The preparation method comprises the following steps that S1, 5-nitroisophthalic acid and metal oxide are subjected to a heating reaction, and a reaction mixture containing 5-nitroisophthalic acid salt is generated; s2, carrying out separation and purification; s3, drying treatment is carried out, and dry powder is obtained; s4, premixing with a mildew inhibitor, a corrosion inhibitor, an antioxidant and a silane coupling agent to obtain uniform composite powder; and S5, mixing the composite powder, a surfactant and an organic solvent to obtain a composite antirust agent finished product. According to the invention, a composite system composed of 5-nitroisophthalic acid zinc and a plurality of functional auxiliary agents is constructed, so that synchronous mildew-proof and rust-proof protection on the metal surface in a high-humidity environment and an environment where microorganisms are easy to breed is realized, and the coating stability and the long-term protection reliability are remarkably improved.

The invention relates to the technical field of medical crystallization, and particularly discloses benzocain-2, 6-dihydroxy benzoate monohydrate as well as a preparation method and application thereof. The benzocain-2, 6-dihydroxy benzoate monohydrate has the following characteristic diffraction peaks in an X-ray powder diffraction pattern which is determined by adopting rays: the diffraction angle values are 6.28 degrees, 12.48 degrees, 15.12 degrees, 17.40 degrees, 19.44 degrees, 22.92 degrees, 23.88 degrees, 26.46 degrees and 27.76 degrees. According to the invention, benzocaine is taken as an active ingredient, 2, 6-dihydroxybenzoic acid monohydrate is taken as a salt-forming agent, and the formed salt can obviously improve the water solubility, antibacterial property and stability of benzocaine; and the preparation method is simple to operate, low in energy consumption, low in solvent consumption, even free of solvent, good in product reproducibility and beneficial to industrial production.

The present invention provides a process for the production of an organic acid from an aqueous medium of a monovalent salt of an organic acid using bipolar electrodialysis via a three compartment electrodialysis unit.

The application discloses a preparation method of battery-grade nanometer titanium dioxide, which comprises the following steps: dissolving a strong alkali weak acid salt as a pH regulator into ice water to make titanium salt completely hydrolyzed to prepare titanic acid; and using sodium hydroxide as the pH regulator to make the titanic acid further converted into a crystalline precursor to prepare a titanium complex [Ti(OH)4(OH)2] 0 Then, the complex is sheared and dispersed, and then subjected to a hydrothermal reaction; after the reaction is completed, the product is completely washed with water and calcined to prepare nanometer titanium dioxide. The prepared nanometer titanium dioxide has super-low impurity content, small particle size and uniform particle size distribution; the total content of magnetic substances, including Cr, Fe, Ni and Zn, is less than 0.2 ppm; the particle size is 0-100 nm; and the average particle size is 50 nm, so that the nanometer titanium dioxide is an excellent material for battery doping.

The application relates to the technical field of H2O2 preparation, and discloses a method for preparing a supported catalyst by using an alkali metal additive, the supported catalyst and application of the supported catalyst, the method comprises the following steps: (1) contacting a solution containing an active component precursor, an inorganic alkaline substance and an alkali metal additive with a carrier to obtain a solid-liquid mixture; (2) drying and activating the solid-liquid mixture; wherein the active component precursor is a Pd precursor, and the alkali metal additive is a strong alkali metal acid salt and / or a weak alkali metal acid salt. By using the inorganic alkaline substance and the strong alkali metal acid salt in combination, the content of Pd in a reduced state in the prepared catalyst can be increased.

A resin composition according to one embodiment of the present disclosure comprises: a base resin containing a polyarylene sulfide resin; and at least one higher aliphatic acid compound selected from the group consisting of higher aliphatic acids, higher aliphatic acid esters, and higher aliphatic acid salts.

The invention discloses high-specificity acamproate as well as a preparation method and application thereof. The preparation method comprises the following steps: providing activated zeolite; uniformly mixing homotaurine, the activated zeolite, water and an acylation reagent in a weakly alkaline environment, and carrying out acetylation reaction to obtain acamproic acid; and carrying out a salt forming reaction on a salt forming compound and the acamproic acid to prepare the acamproic acid salt. The preparation method provided by the invention is simple in process steps, high-purity acamproate can be obtained without complicated purification operation, the problems of low acetylation reaction selectivity, easiness in hydrolysis of an acylation reagent, insufficient product purity and the like in the traditional process are solved, and the preparation method is suitable for industrial production.

The purpose of the present invention is to provide a technique whereby the decomposition of a surfactant can be greatly suppressed without adding a stabilizer. The problem is solved by a method for suppressing decomposition of a surfactant in a cleaning solution for aluminum or an aluminum alloy, the cleaning solution containing an inorganic acid, iron ions, and 0.1-10 g / L of the surfactant, the cleaning solution having a pH of 2 or less. The method includes a step of adding one or more oxoacid salts selected from the group consisting of monooxygenated acid salts and diooxygenated acid salts to the cleaning solution.

The invention discloses synthesis and application of a pyridine-containing asymmetric alpha-diimine nickel catalyst and application of Lewis acid regulation in olefin polymerization, and belongs to the technical field of olefin polymerization. In the olefin polymerization reaction catalyzed by the diimine nickel catalyst, the Lewis acid plays a very ingenious role of a regulator, and the electronic property and space environment of the active center of the catalyst are changed by introducing the Lewis acid salt, so that the dual regulation of the steric hindrance and the electronic effect of the catalyst is realized; the performance of the catalyst is improved; and the structure of the final polymer is changed. Compared with known alpha-diimine nickel catalysts, the alpha-diimine nickel catalyst has the advantages of high polymerization activity, strong thermal stability and improvement of monomer insertion rate.

The application discloses a solid catalyst and a natural oil fatty amido acid salt prepared by the solid catalyst and application, and belongs to the field of daily necessities. The product is prepared by taking active zinc as a catalytic component and gamma-Al2O3 as a carrier. When the natural oil fatty amido acid salt is directly synthesized by catalysis, the condition is mild, the natural oil cannot be damaged, the catalytic degree is high, the prepared product is far superior to similar products in use as an amino acid surfactant, and the product still has high catalytic activity after recovery, can be repeatedly used, and has high economic efficiency.

The invention relates to the technical field of organic synthesis, in particular to a preparation method of a 1, 2, 4-triazine derivative. The 1, 2, 4-triazine derivative is prepared by taking a compound I and an amine compound (a compound II and / or an acid salt thereof) as initial raw materials, taking dimethyl sulfoxide as a solvent and an oxidizing agent and carrying out one-step efficient oxidation tandem cyclization reaction in the presence of a halogen simple substance. The preparation method provided by the invention has the advantages of simple steps, high yield, avoidance of use of highly corrosive hydrobromic acid and highly toxic selenium dioxide, mild reaction conditions and low production cost, and is suitable for large-scale production. Moreover, according to the preparation method provided by the invention, no unstable intermediate is generated, byproducts are few, and the high-purity 1, 2, 4-triazine derivative can be obtained through simple post-treatment steps.

The invention discloses a method for preparing high-purity titanium powder by taking titanium-aluminum waste as a raw material, which comprises the following steps: annealing a titanium-aluminum waste mixture at 400-600 DEG C in an inert atmosphere to remove organic waste in the titanium-aluminum mixed waste, and carrying out reduction deoxidation reconstruction on surface oxides of the titanium-aluminum waste by using reducing micromolecules generated by pyrolysis depolymerization of the organic waste, a clean titanium and aluminum mixture is obtained; the titanium and aluminum mixture is placed in the dense medium liquid, the aluminum material floats above the dense medium liquid, the titanium material sinks to the lower portion of the dense medium liquid, and separation is achieved; the method comprises the following steps: placing a titanium material in a closed reactor, reacting by using gaseous high-reactivity Lewis acid salt, and converting the titanium material into gaseous low-valence titanium chloride; the gaseous low-valence titanium chloride is guided into an inlet-outlet high-temperature-gradient high-temperature decomposition reactor in a high-frequency pulse mode, and is converted into high-purity titanium powder in the process of passing through the high-temperature decomposition reactor, and the high-purity titanium powder is deposited in a collection area of the reactor.

An oral care composition is provided and comprises hop, residual iron, and a stabilizing system comprising a polydentate polyphosphate having at least two functional groups, a polycarboxylic acid salt having at least three carboxylate groups, or a combination thereof.

The invention relates to a device and process for recycling triethylamine in 4.6-dichloro-5-fluoropyrimidine production. The device comprises a reaction kettle, a filter press, a neutralization kettle, a distillation kettle and a receiving tank, and triethylamine acid salt solids output by a triethylamine tank are leached by dichloroethane in the reaction kettle; the discharging end of the reaction kettle is connected with the feeding end of the filter press, the solid material output end of the filter press is connected with the feeding end of the neutralization kettle, the feeding end of the neutralization kettle is further connected with the alkali liquor tank, and the discharging end of the neutralization kettle is connected with a water phase receiving tank and an organic phase receiving tank which are arranged in parallel. The output end of the organic receiving tank is connected with the input end of the distillation kettle; the input end of the receiving tank is connected with the upper end of the distillation kettle through a condenser, and gaseous triethylamine discharged from the distillation kettle enters the receiving tank after being cooled by the condenser. The method is reasonable in design, the production cost of 4.6-dichloro-5-fluoropyrimidine synthesis is effectively reduced, the amount of three wastes is reduced, the acid-binding agent triethylamine is recycled and reused, and meanwhile, the production environment for treating the catalyst in the production process is improved.

Provided are: a separation solution for an aluminum foil laminate, the separation solution having a sufficient ability to separate the aluminum foil laminate into a resin and an aluminum foil while being capable of reducing elution of the aluminum foil into the separation solution; and a method for separating and collecting an aluminum foil laminate using the separation solution. The present invention provides a separation solution for an aluminum foil laminate, the separation solution comprising: a first acid that comprises at least one of nitric acid and formic acid; one or more second acids that are selected from the group consisting of polycarboxylic acids, hydroxy acids, polyaminocarboxylic acids, aminocarboxylic acids, polycarboxylic acid salts, hydroxy acid salts, polyaminocarboxylic acid salts, and aminocarboxylic acid salts; and water. The separation solution is characterized in that the content ratio obtained by dividing the content (mass%) of the first acid in the separation solution by the content (mass%) of the second acids in the separation solution is 0.05-30.

The application relates to the technical field of organic chemistry, and particularly discloses a synthesis method of 5-chloro-2,4-diphenylpyrimidine; 5-amino-2,4-diphenylpyrimidine is dissolved in a mixed solution of an organic solvent and water, acid is added, stirring is carried out, temperature is lowered, nitrite is added, stirring is carried out, a first reaction system is formed; then the first reaction system is added dropwise into an acid salt solution of a chloride to form a second reaction system, reaction is carried out, and 5-chloro-2,4-diphenylpyrimidine is obtained. The yield and purity of 5-chloro-2,4-diphenylpyrimidine are remarkably improved, the performance of an organic electronic device based on an organic light emitting technology is optimized, and the application can be applied to the fields of display, illumination and optoelectronics.

The purpose of the present invention is to provide a method for efficiently producing a polybasic acid salt modified cellulose that has a low organic solvent content and a high degree of substitution with a polybasic acid and / or an acid anhydride. The present invention is a method for producing a polybasic acid salt modified cellulose, said method comprising a reaction step for using a raw material composition that contains cellulose, an alkali catalyst, and a polybasic acid and / or an acid anhydride thereof to obtain a polybasic acid modified cellulose, and a neutralization step for neutralizing the polybasic acid modified cellulose, said method being characterized in that the reaction step is carried out using a kneader.

The invention provides a polyimide-based heat-conducting composite material based on a heterogeneous interaction structure of core-shell microspheres and a heat-conducting filler and a preparation method of the polyimide-based heat-conducting composite material. The method comprises the following steps: preparing Pickering emulsion from a polymer A, an organic solvent, water, a surfactant and a heat-conducting filler A, demulsifying, filtering, washing and drying to obtain core-shell particles; the preparation method comprises the following steps: preparing a polyamic acid solution from aromatic diamine, a polar organic solvent and aromatic dianhydride, performing phase inversion, crushing, washing and drying to prepare polyamic acid salt precursor powder, and preparing a water-based polyamic acid salt solution from the polyamic acid salt precursor powder, triethylamine and water; and dispersing the core-shell particles and the heat-conducting filler B in a water-based polyamide acid salt solution, and heating and drying to obtain the heat-conducting composite material. The method is easy to operate, high-temperature melt blending treatment is not needed, the method is suitable for large-scale industrial production, and the obtained material has high heat conduction performance and mechanical performance and is expected to be widely applied to the field of heat conduction and heat dissipation.

The invention relates to an imidazole group grafted modified polystyrene resin material and a preparation method and application thereof, and the preparation method comprises the following steps: swelling chloromethyl polystyrene resin in an organic solvent, reacting with 2-aminobenzimidazole at 70-110 DEG C for not less than 24 hours in the presence of a strong alkali and weak acid salt, filtering, washing, and drying to obtain the imidazole group grafted modified polystyrene resin material. And washing and drying to obtain the imidazole group grafted modified polystyrene resin material. According to the invention, 2-aminobenzimidazole is efficiently grafted to a polystyrene skeleton through a simple affinity substitution reaction. The prepared resin has high adsorption capacity and good selectivity to copper ions and nickel ions in an aqueous solution, and has good regeneration and reuse performance. The resin is simple in synthesis process and low in cost, and can be widely applied to the fields of electroplating wastewater treatment, ultrapure water preparation, medicine separation and purification and the like.

Provide are an acid salt of a class of nitrogen-containing heterocyclic derivatives and a crystal form thereof, a preparation method therefor, and a use thereof. Specifically, provided are an acid salt of a compound represented by general formula (I) and a crystal form thereof, a preparation method therefor, and a pharmaceutical composition containing a therapeutically effective amount of the crystal form, as well as a use thereof as an inhibitor in the treatment of cardiovascular diseases, cerebrovascular diseases, and other diseases.

The present application relates to a method for purifying citalopram or S-citalopram or their salts. The method comprises treating citalopram or S-citalopram with a water-soluble solution containing sulfite or thiosulfate, and then taking the organic layer, and further separating to obtain citalopram or S-citalopram free base; or adding acid to form a salt, and separating to obtain citalopram or S-citalopram acid salt. The purification method provided by the present application is simple in operation and high in impurity removal rate.

The application provides a method for electrically strengthening recovery of phosphorus and fluorine in phosphogypsum, and belongs to the technical field of harmless treatment of phosphogypsum. In the method, the phosphogypsum is placed in a self-made electric treatment device, and strong acid salt or weak acid salt or water is used as an electrolyte; under the action of a low-voltage direct current electric field, phosphate ions and fluorine ions migrate into an anode chamber, and heavy metal cations migrate into a cathode chamber. The phosphorus and fluorine in the phosphogypsum are converted and directionally moved in the electric process, and then are enriched and recovered. Through the electric strengthening treatment of the phosphogypsum, the phosphorus and fluorine resources in the phosphogypsum are enriched and recovered, high-value calcium fluoride, calcium fluorophosphate and other products are obtained, high-value utilization of the phosphorus and fluorine is realized; meanwhile, the content of impurities such as Ti, Sr, P, Fe, Cr, Ba, Al and F in the phosphogypsum is reduced, and the harmless production of the phosphogypsum is realized.