11 results about "Borate Boric Acid" patented technology

This invention discloses a formation method for high-voltage anode foil, belonging to the technical field of anode foil for electrolytic capacitors. This formation method uses five to six stages of formation. Boric acid (0.1–10 wt%), tertiary phosphoric acid treatment, and tertiary high-temperature treatment in the formation solution improve the leakage current, loss, lifespan, and high-temperature resistance of the aluminum anode foil. Carboxylic acid treatment and hypophosphite (0.01–0.5 wt%) in the formation solution improve the density and hydration resistance of the oxide film. Hypophosphite and citric acid and citrate (0.01–0.5 wt%) in the formation solution increase the capacity of the aluminum anode foil. At a voltage specification of 650–950 VF, the high-voltage anode foil for aluminum electrolytic capacitors produced using this method exhibits high capacity, high-temperature resistance, and long lifespan, making it suitable for the production of 5G anode foil. The production process is simple to operate, the product has good stability, and it is suitable for industrial mass production.

Methods of obtaining aggregates and / or pulverulent mineral material from a starting material comprising hardened mineral binder and aggregates utilizing process auxiliaries selected from the group consisting of polycarboxylate ethers and / or esters (PCE), glycols, organic amines, especially alkanolamines, ammonium salts of organic amines with carboxylic acids, surfactants, especially nonionic surfactants, gemini surfactants, calcium stearate, alkoxylated phosphonic or phosphoric esters, propane-1,3-diol, carboxylic acids, sulfonated amino alcohols, boric acid, salts of boric acid, borax, salts of phosphoric acid, gluconate, iron sulfate, tin sulfate, antimony salts, alkali metal salts, alkaline earth metal salts, lignosulfonates, glycerol, melamine, melamine sulfonates, water absorbents in the form of a superabsorbent polymer or in the form of a sheet silicate, anticaking agents, sugars, sugar acids, sugar alcohols, phosphates, phosphonates, and mixtures thereof.

The present invention relates to a cleaning composition comprising: 1) at least one redox agent; 2) at least one organic solvent selected from the group consisting of water-soluble alcohols, water-soluble ketones, water-soluble esters, water-soluble sulfones and water-soluble ethers; 3) at least one boron-containing compound selected from the group consisting of boric acid, borates and salts thereof; and 4) water.

The application provides a method for determining the content of silicate in salt lake brine. + The method comprises the following steps: removing boric acid, boric acid salt and metal cations except Na from the salt lake brine to be measured by an adsorption resin and an imprinted hydrogel in sequence; obtaining a linear regression equation according to the mass concentration of silicate in a reference solution and the peak area of the Raman spectrum of the reference solution; and finally, scanning the coffee ring of the solution to be measured by using a Raman spectrometer, obtaining the peak area, and substituting the peak area into the linear regression equation to obtain the content of silicate in the salt lake brine to be measured. The boric acid, boric acid salt and metal cations in the salt lake brine to be measured are removed first, which can reduce the interference of salinity and other substances on the detection result, simplify the preparation process of the salinity matrix, reduce the amount of reagent used, fully combine the separation and enrichment characteristics of the coffee ring effect and the high-resolution detection of the Raman spectrum, and quickly and accurately determine the content range of silicate in the salt lake brine.

The present application belongs to the technical field of industrial water treatment and metal corrosion prevention, and relates to a green multifunctional corrosion inhibition method and a corrosion inhibitor composition thereof. The corrosion inhibition method comprises the following steps: dissolving a water-soluble borate in a fluid medium containing a metal pipeline to be protected, fully stirring, and forming a weak alkaline buffer solution containing a "boric acid-borate" conjugate acid-base pair through a hydrolysis reaction; adding a mussel-biomimetic catechol compound and an amine-based compound to the weak alkaline buffer solution, and sealing and stirring at normal temperature and pressure; and using the oxidation self-polymerization of the mussel-biomimetic catechol compound and the reaction of the mussel-biomimetic catechol compound with the amine-based compound to form a high-efficiency composite protective film with strong adhesion on the metal surface. The corrosion inhibition system constructed in situ by the method has excellent corrosion inhibition efficiency, pH buffering and oxygen capture performance, and the metal corrosion inhibition effect is better than that of a simple physical mixed compound. The method is simple and easy to implement, has mild reaction conditions, is low in cost, and is environmentally friendly.

The invention relates to a continuous production process of trimethyl borate, which comprises the following steps: 1) mixing methanol and boric acid according to the molar ratio of (4.0-4.5): 1, feeding into a pre-reactor, and dissolving and pre-reacting at 64-66 DEG C; (2) continuously feeding the pre-reacted material into the middle upper part of an esterification rectifying tower, continuously carrying out esterification reaction and rectifying separation, controlling the tower top temperature at 53-55 DEG C, and extracting an azeotrope of trimethyl borate and methanol; (3) conveying a methanol-water mixed solution discharged from the bottom of the esterification rectifying tower to a methanol recovery tower, controlling the temperature of the tower top at 62-64 DEG C, directly introducing the extracted gas-phase methanol into the middle part or the lower part of the esterification rectifying tower, and discharging the total amount lt of boric acid / trimethyl borate from the tower bottom; and 0.5% of water. Compared with the prior art, the energy consumption can be saved by more than 50% under the condition of ensuring that the one-time conversion rate of boric acid is greater than or equal to 99.6%, the diameter and the height of the esterification rectifying tower are greatly reduced under the same productivity, and the equipment cost is reduced.

The present invention relates to a descaling agent for removing scale during the hot working of metals, in particular during hot-rolling processes for producing seamless steel tubes, wherein the descaling agent comprises the following components in wt.%, based on the solids content: (a) 10 to 45 wt.% sodium sulphate; (b) 10 to 45 wt.% calcium carbonate, lithium carbonate, or a mixture thereof, (c) 10 to 45 wt.% borosilicate glass frit or ground borosilicate glass, (d) 0 to 15 wt.% fatty acid, fatty acid salt, or a mixture thereof, (e) 0 to 7 wt.% flow aid, and (f) not more than 1 wt.% of a water-soluble boron compound selected from boric acid, borate salt, or a mixture thereof.

The present application relates to the technical field of cultural relic protection materials, and particularly relates to a high-activity beta-Ca2SiO4 for cultural relic protection and preparation and application thereof. On the basis of a traditional solid-phase synthesis process, a new boron-containing crystal form stabilizer is used to obtain high-activity beta-Ca2SiO4 through high-temperature solid-phase synthesis, or high-activity beta-Ca2SiO4 is obtained through high-temperature solid-phase synthesis and then airflow milling. The boron-containing crystal form stabilizer with low water solubility is selected, which on the one hand effectively reduces the volatilization of boron during high-temperature solid-phase reaction, and on the other hand effectively avoids the uneven phenomena such as crystallization and stratification after drying caused by the use of water-soluble crystal form stabilizers such as boric acid and sodium borate during wet processing. In addition, the calcium and calcium-silicon elements contained in the introduced boron-containing crystal form stabilizer are necessary components for beta-Ca2SiO4 synthesis, and the high-activity beta-Ca2SiO4 prepared by using the present application has a lower soluble salt content.

The invention discloses a movable boron adding device for boron preparation of a nuclear power plant, relates to the technical field of operation supply systems, and aims to solve the problems that the boron preparation time is relatively long in the boron preparation operation process of the existing nuclear power plant, boric acid is poured by personnel in high-altitude load-bearing operation, boric acid solid dust splashes, and boric acid powder agglomerates to influence the boron preparation efficiency. The device comprises a boron preparing and dosing device part and a boric acid tank cart, the boron preparing and dosing device part comprises a boron adding bin of a trapezoidal bevel structure, the boron adding bin is further connected with a boron adding bin supporting rod, the bottom of the boron adding bin is connected with a boric acid conveying component through a discharging device, and a variable frequency motor is further arranged between the discharging component and the boric acid conveying component; the boric acid tank is fixed on the roll-over stand of the boric acid tank cart through the clamping and fixing clamp, the roll-over stand is connected with the lifting table through a rotating shaft at the front part of the lifting table, and the lifting table is mounted on the movable frame and can lift on the boric acid tank cart.

The invention relates to the technical field of PCB manufacturing, in particular to a horizontal reducing agent for PCB chemical copper and a preparation method and application thereof. The cutting fluid is prepared from the following raw materials in mass concentration: boric acid, borate, a reducing agent, a processing aid, a composite accelerant and deionized water, the mass concentration of the boric acid is 6-10 g / L, the mass concentration of the reducing agent is 3-6 g / L, the mass concentration of the processing aid is 0.2-0.5 g / L, the mass concentration of the composite accelerant is 2-4 g / L, the borate is used for adjusting the PH value of the solution to be larger than or equal to 7, and the composite accelerant is composed of activated carbon and a nitrogen-containing heterocyclic compound. The PCB is reduced to form a plating layer which is uniform in distribution, high in purity and compact in crystallization through the synergistic effect of the buffer solution of boric acid and borate, the activated carbon in composite promotion and the nitrogen-containing heterocyclic compound, so that the corrosion resistance of the plating layer is higher, and excessive corrosion of hydrochloric acid and nitric acid to the PCB is avoided.

An antibiotic therapeutic composition or method of treatment includes administering a beta-lactamase inhibitor in combination with a beta-lactam antibiotic. The beta-lactamase inhibitor can be a boronic-acid, a boronic-ester beta-lactamase inhibitor, carboxyl-group beta-lactamase inhibitors, halogen-terminated heterocyclic group beta-lactamase inhibitors, or any pharmaceutically acceptable salts thereof. In combination, the beta-lactamase inhibitors and beta-lactam antibiotics can inhibit the growth of bacteria that are resistant to the beta-lactam antibiotics alone. According to additional embodiments, the effectiveness of various combinations of compounds including various antibiotics and compounds selected from the group consisting of 5-Carboxythiophene-2-boronic acid pinacol ester, 5-Carboxy-2-fluorophenylboronic Acid, 3-Amino-5-carboxylphenylboronic acid, 5-Carboxy-2-chlorophenylboronic acid, 3-Carboxy-2-fluorophenylboronic acid, 5- dehydroxyboryl-2-thiophenecarboxylic acid, and 5-Borono-2-chlorobenzoic acid is demonstrated. Particularly, when combined with certain antibiotics, each of these compounds demonstrates enhanced effectiveness against bacteria and bacterial infections even where the bacteria are known to be resistant to the beta-lactam antibiotics.