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303 results about "Sodium benzenesulfonate" patented technology

Treatment of barley roots with sodium benzenesulfonate caused loss of potassium (k+), nitrate (no3-) & uv-absorbing material into the surrounding solution. extent of loss depended on lipophilic nature of org acid used & on concn of its undissociated form.

P-Ca-V composite phosphating solution on magnesium alloy surface and chemical conversion processing method

The invention relates to a composite phosphating solution of P-Ca-V on the surface of a magnesium alloy and a method for chemical conversion treatment. The solution is characterized in that each liter of the composite phosphating solution comprises the following compositions: 4 to 20 milliliters of 85 percent phosphoric acid of, 5 to 30 grams of sodium dihydrogen phosphate, 10 to 40 grams of calcium nitrate, 0.5 to 10 grams of benzene sulfonic acid sodium salt, 0.5 to 5 grams of ammonium metavanadate, and the balance being water. The method comprises the following steps: pre-degreasing, degreasing, secondary water washing, acid washing, secondary water washing, alkaline etching, secondary water washing, chemical transformation, secondary water washing, pure water washing, and drying. Taking an AZ91D magnesium alloy as an example, 48 hours after a corrosion resistance salt spray test after the treatment by the method of the invention, the corrosion area of the AZ91D magnesium alloy is less than 1 percent; the paint film adhesive force is at 0 level by a grid method and is obviously superior to the performance of a chromate conversion coating; and the formed chemical conversion coating does not contain crystal water. The composite phosphating solution has the synergistic reaction of Ca and V, as well as the functions of a corrosion inhibitor and a wetting agent of the benzene sulfonic acid sodium salt.
Owner:嘉兴中科亚美合金技术有限责任公司

A kind of chemical nickel plating solution and chemical nickel plating process

The invention relates to an electroless nickel plating solution and an electroless nickel plating process for a flexible printed circuit board. The electroless nickel plating solution of the present invention comprises the following components: nickel salt, calculated as Ni2+ content, is 4.5-5.5g / L; reducing agent, 15-40g / L; complexing agent, 20-100g / L Stabilizer, 0.01~10mg / L; Accelerator, 0.001~1g / L; Low stress additive, 0.01~10g / L; The low stress additive is sodium naphthalene disulfonate, sodium benzenesulfonate, saccharin, gelatin, One or more of butynediol, acetic acid, coumarin, formaldehyde, and acetaldehyde. In the chemical nickel plating process of the present invention, the temperature of the chemical nickel plating liquid is 75-90 DEG C, the pH value of the chemical nickel plating liquid is 4.5-5.4, and the chemical nickel plating time is 15-30 minutes. The electroless nickel plating solution and the electroless nickel plating process of the present invention can effectively reduce the stress of the nickel layer, improve the toughness of the nickel layer, make the nickel layer have good bending performance, and meet the production and assembly requirements of flexible printed circuit boards , to further improve the yield rate.
Owner:SHENZHEN JINGCHENGDA CIRCUIT TECH

Preparation method for sulfur-doped three-dimensional structured positive electrode material of lithium-sulfur battery

The invention provides a preparation method for a sulfur-doped three-dimensional structured positive electrode material of a lithium-sulfur battery. The preparation method comprises the following steps of (1), adding graphite oxide into water for performing ultrasonic processing to form a graphene oxide suspension liquid; (2), adding benzene sulfonic acid sodium salt to the graphene oxide suspension liquid to obtain three-dimensional sulfur-doped graphene; (3), adding the three-dimensional sulfur-doped graphene obtained in the step (2) and ketjen black into N-methyl pyrrolidone for performing an ultrasonic reaction to form a suspension liquid; (4), adding elemental sulfur to the N-methyl pyrrolidone for performing an ultrasonic reaction until the elemental sulfur is fully dissolved to form a suspension liquid; and (5), mixing the two kinds of suspension liquid obtained in the step (4) and the step (3), uniformly stirring, and slowly adding distilled water while stirring to obtain the three-dimensional structured positive electrode material of the lithium-sulfur battery. Due to sulfur adsorption by sulfur atoms in the sulfur-doped graphene, the shuttle effect can be effectively lowered, so that the cycling life of the lithium-sulfur battery is prolonged.
Owner:钟玲珑

Preparation method and application of special rice selenium-enriched leaf fertilizer

The invention provides a preparation method and an application of a special rice selenium-enriched leaf fertilizer. The preparation method of the special rice selenium-enriched leaf fertilizer comprises the following steps: dissolving sodium selenite into water to prepare a primary mother solution, wherein the concentration of sodium selenite is 25 to 50g / l; mixing the primary mother solution with an amino acid solution, wherein the mass concentration of the amino acid solution is 15% to 20%; then vibrating and chelating at the temperature of 35 to 45 DEG C for 48 to 60 hours to obtain a chelation solution; evenly mixing the chelation solution and an aqueous solution of a mono-silicic acid to prepare a mixed solution; adding 1 to 3g of sodium alkyl benzene sulfonate into each liter of the mixed solution, then stirring with an alcoholic fermentation filtrate at the temperature of 25 to 35 DEG C, and performing secondary chelation for 36 to 48 hours, so as to obtain the special rice selenium-enriched leaf fertilizer. With the adoption of the technical scheme of the preparation method, 90% or more of inorganic-form selenium is converted into organic-form selenium in selenomethionine, selenocystine and the like, the risk of poison is eliminated, the absorption and conversion rate of the selenium is increased, the use amount of the sodium selenite is reduced, and the cost is lowered.
Owner:AGRI RESOURCE & ENVIRONMENT RES INST GUANGXI ACADEMY OF AGRI SCI

Method for manufacturing golden finger of soldering-pan of flexible package carrying board

The invention relates to a method for manufacturing a flexible carrying board of which the chip is directly packaged on a flexible printed circuit carrying board (COF), in particular to a method for manufacturing a golden finger of a soldering-pan of a flexible carrying board. The COF packaged flexible carrying board is made of a glueless flexible substrate; a basement membrane of the substrate is made of a polyimide material and has the thickness between 12 and 25 micrometers; and a conductor layer is made of copper, and has the thickness between 9 and 36 micrometers. The method for manufacturing the golden finger of the soldering-pan of the flexible carrying board comprises low-stress electroless nickel plating & gold immersion technology; a raw material is nickel sulfate and a reducing agent is sodium hypophosphite; and in order to reduce the stress of a nickel layer, an additive for reducing the stress is added. The low-stress additive is one or more of benzene sulfonic acid sodium salt, coumarin, formaldehyde, aldehyde and naphthalene disulfonic acid, and the concentration is 0.01 to 0.2 mol / liter. The operating temperature of the low-stress electroless nickel plating is between 80 and 85 DEG C and the pH value is between 4.8 and 5.2.
Owner:SHENZHEN DANBOND TECH

High-strength aerated concrete building block produced by using electrolysis manganese residues and preparation method thereof

The invention discloses a high-strength aerated concrete building block produced by using electrolysis manganese residues and a preparation method thereof. The building block is made of: (1) basic raw materials, (2) additives and (3) a solvent, wherein the basic raw materials include 48-58 percent by weight of electrolysis manganese residues, 20-30 percent by weight of silica sand, 5-10 percent by weight of cement and 15-25 percent by weight of quicklime; based on the total amount of the basic raw materials, the additives include 0.05-0.12 percent by weight of aluminum powder, 1-5 percent by weight of water glass, 0.005-0.01 percent by weight of sodium benzene sulfonate washing powder and 0.1-0.4 percent of an aid; the solvent is water; and the weight ratio of water to a water material of the basic raw materials is 0.6-0.7. The preparation method comprises the following steps of: pretreating the raw materials, and forcibly stirring according to a certain proportion as required to obtain slurry; and standing and performing steam curing with a still kettle to obtain a product. The aerated concrete building block produced with the method has the advantages of low volume weight, high strength, simple process, convenience in operating, freeness from pollution, high electrolysis manganese residue consumption and convenience in mechanical production.
Owner:HUAIHUA YONGGU ENERGY SAVING WALL MATERIAL

Ultra-thin electrolytic copper foil and preparation method thereof

The invention discloses an ultra-thin electrolytic copper foil and a preparation method thereof. The method comprises the following steps that an anode plate and a cathode roller are arranged and aresoaked in a copper electrolyte; an additive is added into the copper electrolyte and uniformly mixed; a direct current is exerted between the anode plate and the cathode roller and electrolysis is performed to prepare the copper foil on the surface of the cathode roller; and the additive comprises sodium dodecyl benzene sulfonate, sodium 3-mercaptopropanesulphonateand hydroxyethyl cellulose and collagen, and the concentration of sodium dodecyl benzene sulfonate is 20-70 mg/L, the sodium 3-mercaptopropanesulphonateand hydroxyethyl cellulose with the concentration of 30 -60 mg/L, and the concentration of the hydroxyethyl cellulose is 20-50 mg/L, the concentration of the collagen is 100-180 mg/L, and the molecular weight of the copper foil is 2000-4000. According to the preparation method, through introducing the additive with a specific ratio, crystal grains can be further refined during direct current electrolysis, and the ultra-thin copper foil with the thickness of less than 6 micronscan be prepared while ensuring that the copper foil has good tensile strength and flatness; and the process is simple and convenient, and facilitates the industrial large-scale production.
Owner:HUBEI ZHONGYI TECH

4.5 micrometer electrolytic copper foil for lithium ion battery, preparation method and additive

The invention discloses 4.5 micrometer electrolytic copper foil for a lithium ion battery, a preparation method and an additive. The 4.5 micrometer electrolytic copper foil is prepared from polyquaternium-10, polyquaternium-7, polyquaternium-51, dithiobis-1-propanesulfonic acid disodium salt, sodium alcohol mercaptan sulfonate, gelatin, alkaline safranine dye, N-butyl thiourea, mercaptoimidazole sodium benzenesulfonate and polyethylene glycol acetal. The 4.5 micrometer electrolytic copper foil for the lithium ion battery, the preparation method and the additive have the beneficial effects thatby means of the coupling reaction of the additive, nucleating surface energy is reduced, the growth speed of crystal nuclei is restrained, pinholes and micro-defects are removed, the nucleating quantity is increased, grains are refined, the structure of the copper coil is homogenized, and the tensile strength and the ductility are effectively improved; and industrialization of the copper foil which has the tensile strength of 35-40 kgf/mm<2> and the uniform double-face structure (Rz of the smooth and rough faces is 1.0-2.0 micrometers) and is free of defects and ultrathin (the thickness is 4.5 micrometers) is achieved, and industrialization of high-energy-density power battery copper foil products is effectively achieved.
Owner:安徽华创新材料股份有限公司

Method for hydrothermal synthesis of nickel hydroxide hierarchical structure microspheres assembled by nano-sheets

The invention belongs to the technical field of preparation of functional nano-materials, relates to a preparation method of nano-hierarchical structure nickel hydroxide and particularly relates to a method for hydrothermal synthesis of nickel hydroxide hierarchical structure microspheres assembled by nano-sheets. The method disclosed by the invention comprises the following steps of: mixing a nickel acetate (Ni(CH3COO)2) water solution with a polyethylene sodium benzenesulfonate water solution, placing in a high-pressure reaction kettle lined with polytetrafluoroethylene to perform hydrothermal reaction, cooling, then performing centrifugal separation, washing with water, washing with ethanol, and then drying. The nickel hydroxide hierarchical structure prepared by the method disclosed by the invention is good in monodispersity and uniform in appearance, the diameter is 1.5-3mu m, and the hierarchical structure is assembled by flaky nano-units in a spiral layer-by-layer superimposition way and belongs to a multi-stage mesoscopic structure. The structure material combines larger surface area and excellent anti-agglomeration stability, and has great application prospects in the fields of battery electrode materials, catalysis, air sensitivity and the like. The method disclosed by the invention has the advantages of simple process, no need of adding a precipitating agent, convenience in operation and good repeatability, and is expected to realize industrial production.
Owner:JIANGSU UNIV

Natural pyrethrin water emulsion and its preparation

The pyrethrin water emulsion consists of pyrethrin 1 weight portions, synergist 1-30 weight portions, sodium benzene sulfonate 10-95 weight portions, and water 0-95 weight portions. It is water soluble, light stable and water stable. When used, it can form one air isolating layer in the surface of pest and has high pesticidal effect. It is used in killing pest in vegetable, fruit, flower, tea, Chinese medicine plant, etc. and may be also used for other purpose. It has high pesticidal effect, low residue and other advantages.
Owner:YUNNAN NANBAO BIOTECH

Preparing method for ordinary-pressure positive-ion dyeable polyester fiber

The invention relates to a preparing method for an ordinary-pressure positive-ion dyeable polyester fiber. The preparing method includes the steps that dimethyl isophthalate-5-sodium benzenesulfonate,ethylene glycol, a catalyst and an anti-ether agent are mixed to be subjected to an ester exchange reaction, the reaction is end, then ethylene glycol and sodium ethylene glycol are added, modulationis carried out, then terephthalic acid, ethylene glycol and a catalyst are mixed, and the mixture is subjected to an esterification reaction; the modulated product after the ester exchange reaction is end and polyethylene glycol are added into an esterification reaction system reaching the end point of the esterification reaction, condensation polymerization is carried out, and spinning melt is obtained; the spinning melt is measured, extruded, cooled, subjected to oil applying, stretched, subjected to heat setting and wound, and the ordinary-pressure positive-ion dyeable polyester fiber is prepared. According to preparing method, generation of impurities in the polyester-fiber production process is reduced, pressure rising of a spinning assembly and a filter is reduced accordingly, the service cycle of the polyester fiber is prolonged, the continuity and the safety of the whole production process are guaranteed, and the preparing method has the good economic value and popularizationvalue.
Owner:JIANGSU HENGKE ADVANCED MATERIALS CO LTD

Method for synthesizing surface functional group modified carbon quantum dots and application to nano oil displacement

The invention provides a method for synthesizing surface functional group modified carbon quantum dots and an application of the surface functional group modified carbon quantum dots in nano oil displacement, which comprises the following steps: by using anhydrous citric acid as a carbon source, carrying out a hydrothermal method to obtain a carboxyl modified carbon quantum dot solution, and purifying to obtain a carboxyl modified carbon quantum dot solid; reacting the carboxyl modified carbon quantum dots and sodium p-chloromethylbenzenesulfonate in a polytetrafluoroethylene reaction kettle for 3 h after the pH value of the solution is adjusted to be weakly alkaline, and generating sulfonic group modified carbon quantum dots; reacting the carboxyl modified carbon quantum dot with ammoniawater, and purifying to obtain an amido-modified carbon quantum dot; and reacting the amido-modified carbon quantum dot with sodium hypochlorite in an ice-water bath for 3 hours, adding NaOH to reactfor 8 hours, and purifying to obtain the surface amino-modified carbon quantum dot. The obtained surface functional groups (carboxyl, sulfo, acylamino and amino groups) are used for modifying the carbon quantum dots to carry out a rock core displacement experiment, and the oil displacement rate can be greatly improved.
Owner:SOUTHWEST PETROLEUM UNIV

Preparation method of reproduced cotton-like polyester fiber capable of being dyed by cationic dye

The invention relates to the field of polyester synthesis, and discloses a preparation method of a reproduced cotton-like polyester fiber capable of being dyed by cationic dye. The preparation methodcomprises the steps: 1) carrying out an esterification reaction on isophthalic acid sodium pentasulfonate, dimethyl isophthalate-5-sodium benzenesulfonate or a mixture of the isophthalic acid sodium pentasulfonate and the dimethyl isophthalate-5-sodium benzenesulfonate and ethylene glycol, and then adding polyethylene glycol to react, thus acquiring a trimonomer ester; 2) sorting and crushing therecycled polyester; 3) uniformly mixing the recycled polyester with a reaction auxiliary, and then mixing with the trimonomer ester, melting and extruding to prepare a regenerated polyester slice; and4) spinning. According to the method, the recycled polyester does not need to be degraded, the modified trimonomer ester and the reaction auxiliary are ingeniously utilized to directly react with therecycled polyester to prepare the regenerated polyester; the method has the advantages of simple process and low cost; and polyester molecular chains have modified trimonomer ester blocks, so that the fiber has excellent moisture regain and cationic dyeing effect, and achieves the cotton-like effect.
Owner:ZHEJIANG HENGYI PETROCHEMICAL RES INST CO LTD
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