57 results about "Phosphite salt" patented technology

The invention relates to the field of additives, in particular to a polymer additive and application thereof, which are used for solving the problem that the existing dialkyl phosphinate is insufficient in flame retardant efficiency and contradictory in mechanical property in practical application. Diethyl phosphinate, dialkyl phosphinate, alkyl phosphinate, alkyl phosphinate and phosphite are reasonably compounded to prepare the polymer additive, so that the polymer additive has excellent and efficient flame retardance and also can be endowed with excellent compatibility, the polymer additive is used in a polymer material, and the flame retardance of the polymer material is improved. According to the present invention, with the flame retardant, the polymer material containing the flame retardant can have advantages of excellent flame retardant property, good toughness, high impact strength and excellent mechanical property under the condition of the small addition amount.

The application discloses a method for improving crystallization ability of semi-aromatic nylon and modified semi-aromatic nylon. The method comprises the following steps: mixing semi-aromatic nylon and an alkaline solution, and preparing the modified semi-aromatic nylon after heat treatment; the mass ratio of the alkali in the alkaline solution to the semi-aromatic nylon is greater than or equal to 0.005:1; the alkali in the alkaline solution comprises hypophosphite, phosphite, phosphate or alkali metal salt; and the temperature of the heat treatment is greater than 60 DEG C. The method can improve the crystallization ability of the semi-aromatic nylon without adding nucleating agents, additives and the like, for example, improving the crystallization ability of the semi-aromatic nylon under the conditions that the polymerization process and the polymer molecular weight are determined.

The present disclosure pertains to a method of treating a plant or seed by applying a composition to the plant or seed. The composition may include a phosphite (Phi), such as H2PO3, [HPO3]-2, salts thereof, or combinations thereof. The composition may also include an orthophosphate (Pi), such as [PO4]-3, [HPO4]-2, [H2PO4]-, H3PO4, salts thereof, or combinations thereof. The present disclosure also pertains to plants or seeds that have been treated with the compositions of the present disclosure. The plant and seeds of the present disclosure may express a phosphite oxidoreductase-encoding gene, such as ptxD. The methods of the present disclosure may also include a step of introducing a phosphite oxidoreductase-encoding gene into a plant or seed of the present disclosure.

The application relates to a compounded system containing environment-friendly flame retardant melamine phosphite, a preparation method and application thereof, and belongs to the technical field of flame retardants. In order to overcome the shortcomings and deficiencies in the prior art, a compounded system containing melamine phosphite is prepared by taking melamine, phosphorous acid and a modifier as raw materials. The application has the beneficial effects that: (1) the preparation method is simple in operation, low in production cost and easy for batch production; (2) the compounded system has the advantages of simultaneous flame-retardant effect of acid source, gas phase and condensed phase, corrosion resistance, low smoke, low toxicity, difficulty in moisture absorption and high temperature resistance; (3) the compounded system can be well dispersed in a matrix, has good flame-retardant performance and is not easy to precipitate; and (4) the compounded system containing melamine phosphite with different particle sizes is obtained through screening, so that the requirements of different high polymer products on particle sizes are met.

The invention discloses a method for preparing a phosphite positive electrode material, and belongs to the technical field of preparation of phosphite positive electrode materials. The method comprises the following steps: S1, respectively dissolving a phosphorus source, a lithium source or a sodium source and a transition metal source in a solution; s2, an antioxidant is added into the solution, and the solution is mixed after dissolution; s3, transferring the mixed solution into a reaction kettle for hydrothermal reaction; s4, after the hydrothermal reaction is finished, washing and drying the obtained precipitate; and S5, sintering the dried product in the step S4 in an atmosphere, wherein the sintered product is the phosphite positive electrode material. Through the hydrothermal method, the preparation process is simplified, the process steps are reduced, the energy consumption is reduced, various parameters are controllable, the problems of tedious steps and relatively high energy consumption of the current preparation of the battery positive electrode material are solved, and the requirements of high energy density, low cost and high safety are met.

The invention relates to a preparation method of a trifloxystrobin intermediate (E)-2-(2-bromomethyl phenyl)-2-methoxyimino methyl acetate, and belongs to the technical field of organic chemistry. The method comprises the following steps: by taking a trifloxystrobin intermediate (E)-2-(2-bromomethyl phenyl)-2-methoxyimino methyl acetate containing dibromo impurities as a raw material and an organic solvent I as a reaction medium, carrying out debromination reaction at 5-60 DEG C by using phosphite, desolventizing and extracting a reaction solution, and crystallizing to obtain the high-purity (E)-2-(2-bromomethyl phenyl)-2-methoxyimino methyl acetate. According to the method disclosed by the invention, the dibromo impurity of the trifloxystrobin intermediate is subjected to debromination treatment by adopting the phosphite, so that the dibromo impurity is converted into the trifloxystrobin intermediate. By adopting the method provided by the invention, the conversion time of the dibromo impurity can be obviously shortened, the content and the yield of the trifloxystrobin intermediate obtained by conversion are both higher than 95%, and the reaction efficiency and the quality of the intermediate are greatly improved.

The invention relates to the technical field of plant cultivation and nutrition, and discloses a treatment method for enhancing coloring and sugar increasing of citrus fruits based on 5-aminolevulinic acid. And phosphite serving as a carbon immobilization catalyst and polyhydric alcohol serving as a product transfer accelerant are creatively compounded. The preparation method comprises the key step of accurately regulating and controlling the pH value of the system so as to ensure the stability and efficient absorption of the preparation. According to the application method, foliage spraying is carried out in specific time windows of the young fruit stage and the expansion stage of citrus, so that the effect of the preparation is matched with the key physiological rhythm of fruit development. Through the synergistic effect of the composition and the method, the photosynthetic whole chain of light harvesting-carbon sequestration-transportation is systematically optimized, the soluble solid content and the sucrose content of the citrus fruits can be remarkably increased, the color turning of the peel is effectively promoted, and the method is safe, stable and outstanding in effect.

The present invention discloses a high-heat and high-shear-resistant high-flame-retardant halogen-free flame-retardant compound system and use thereof in a glass fiber reinforced material. The flame-retardant compound system comprises the following components in weight percentages: 40%-99.9% of aluminum diethylphosphinate, 0.1%-50% of a poly / mono-phosphorous acid-condensed diphosphite salt and / or a condensed diphosphite salt, 0-40% of inorganic aluminum phosphite, and 0-10% of a zinc-containing thermally stable compound, wherein the poly / mono-phosphorous acid-condensed diphosphite salt and the condensed diphosphite salt has a structural formula shown in a formula (I):wherein, x is an integer of 0-6, n, y, and p are integers of 1-4, and M is Ca, Mg, Al, Zn, Fe, Sn or Ti.

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.

A flame-retardant metal-resin composite material according to the present disclosure is a metal-resin composite material in which metal layers are laminated on both surfaces of a core material layer containing a resin. The core material layer contains a metal hydroxide, a resin having a specific polar group, and a flame retardant containing at least one compound selected from the group consisting of an inorganic polyphosphate compound, an inorganic phosphite compound, an inorganic phosphinate compound, an inorganic metaphosphate compound, a melamine compound, and a triazine compound.

The invention provides an electrolyte for a capacitor, the electrolyte comprises a sodium salt, an organic solvent and an additive, and the additive comprises an inorganic additive and an organic additive; the inorganic additive comprises at least one of sodium tetrafluoroborate and sodium difluoro (oxalato) borate; the organic additive comprises at least one of vinylene carbonate, 1, 3-propane sultone, ethylene sulfate, tris (2, 2, 2-trifluoroethyl) phosphite, ethyoxyl (pentafluoro) cyclotriphosphazene, methyl nonafluorobutyl ether, biphenyl, tris (trimethylsilyl) phosphite and trimethoxy (perfluorophenyl) silane, and the organic additive comprises at least one of ethylene carbonate, 1, 3-propane sultone, ethylene sulfate, tris (2, 2, 2-trifluoroethyl) phosphite, ethyoxyl (pentafluoro) cyclotriphosphazene, methyl nonafluorobutyl ether, biphenyl, tris (trimethylsilyl) phosphite and trimethoxy (perfluorophenyl) silane. When the electrolyte is applied to the sodium metal capacitor, the sodium metal capacitor can have excellent cycle stability and cycle life.

A battery having a cathode comprised of a disordered rocksalt and a localized high concentration electrolyte having a halogenated phosphorous additive has improved cycle life. The cycle life may be increased by 5%, 10% or 20% or more when using the halogenated phosphorous additive such as a phosphate, phosphonate or phosphite. Halogenated phosphorous additives may have hydrocarbyl groups further substituted with a heteroatom such as a double bonded oxygen (e.g., ester, carbonate, keto, and aldehyde group).

Provided are a polyamide resin composition containing 100 parts by mass of a specific polyamide (A), 45 to 120 parts by mass of an inorganic fibrous reinforcing material (B), 25 to 40 parts by mass of at least one phosphinate salt (C) represented by a specific formula, and 2 to 15 parts by mass of a phosphite salt (D), the phosphinate salt (C) and the phosphite salt (D) being contained at a specific ratio, and a molded object of the polyamide resin composition.

The invention discloses a preparation method and application of a Ni2P-loaded rare earth doped nickel-based micro-mesoporous material, and the method comprises the following steps: jointly dissolving hypophosphite, nickel salt and rare earth metal salt in a solvent for hydrothermal reaction, cleaning, drying and grinding the product to obtain rare earth metal doped nickel phosphite with a micro-mesoporous structure, and drying to obtain the Ni2P-loaded rare earth doped nickel-based micro-mesoporous material. And under the protection of inert atmosphere, co-calcining the Re-NiPO and phosphite in a non-mixing manner, and carrying out phosphating reaction to form nickel phosphide particles on the surface and in pores of the Re-NiPO, thereby obtaining the Ni2P-loaded rare earth doped nickel-based micro-mesoporous material. A series of Ni2P-coated Re-NiPO (Re = La, Ce, Sm) heterojunction materials are prepared through a hydrothermal-phosphating method, and the hard magnetic property and the catalytic activity can be improved at the same time.

The invention relates to the field of materials, and discloses a surface wave-shaped gold nanocrystalline material and a preparation method and application thereof.The preparation method comprises the steps that a chloroauric acid solution A1, a sodium hydroxide solution B1 and a solution C1 containing a first ligand react to obtain a first solution; the first ligand is selected from more than one of nitrite, citrate, sulfite and hypophosphite; a solution 1 containing a second ligand, a solution 2 containing a nanocrystalline template and a reducing agent solution 3 are mixed to obtain a mixed solution 4, the solution I is added into the mixed solution 4 to obtain a solution II, and the second ligand is selected from one or more of polyvinylpyrrolidone and poly (diallyldimethylammonium chloride) heat exchange sodium dodecyl benzene sulfonate; and mediating a mediating agent into the solution II to obtain the gold nanocrystalline material with the wavy surface. According to the method, the gold nanocrystals are synthesized in a water phase at normal temperature and normal pressure by adopting a wet chemical method, the surfaces of the prepared gold nanocrystals are wavy, and the roughness is continuously adjustable.

The invention provides a polymer additive and a polymer composition containing the same. The polymer additive comprises the following components in parts by mass: 50-80 parts of dialkyl phosphinate, 1-20 parts of phosphite and 20-49 parts of organic aluminum phosphonate, the organic aluminum phosphonate has a structure as shown in a formula I. Through the design of the dialkyl phosphinate, the phosphite and the organic aluminum phosphonate with the structure as shown in the formula I and the mutual compounding of the dialkyl phosphinate, the phosphite and the organic aluminum phosphonate in specific dosage, the flame retardant effect and the precipitation resistance are synergistically improved, so that the flame retardant has excellent flame retardant property and damp-heat precipitation resistance. The polymer additive is used in a polymer system, so that a polymer composition containing the polymer additive has excellent flame retardance and heat and humidity resistance, does not have the problem of assistant precipitation in severe environments such as high temperature and high humidity, has excellent flowability and processability, enables the qualified rate of injection molded parts to be high, and keeps an excellent color value.

The booster additive concentrate can advantageously contain: (a) an antiwear mixture of two or more phosphite / phosphate compounds and one or more ether / sulphide compounds; (b) an ashless dispersant; (c) a calcium-containing detergent, such as an overbased calcium phenate; (d) >2 friction modifiers, at least one of which comprises a polyalkylene polyamine succinimide derivative; (e) optionally a corrosion inhibitor; and (f) a lubricating oil base stock. The booster additive concentrate can exhibit a specific content of B / Ca / P based on these additive components, and can contain minimal or substantially no additional antioxidants. A lubricant composition can be made from the booster additive concentrate and a fresh / used lubricating oil composition "diluent", which can rejuvenate the diluent. Such a lubricant composition can have advantageous anti-shudder durability (ASD) life and other friction properties. In particular, when used in a vehicle having a continuously variable transmission (CVT), such a concentrate / composition is able to provide excellent lubrication.

The present invention provides a dielectric fluid comprising an oil of natural biological origin and one or more compounds selected from the group consisting of phosphite compounds. It has been found that the addition of one or more compounds selected from the group consisting of phosphite compounds to a dielectric fluid comprising an oil imparts a stabilizing effect that reduces, inhibits, or prevents the formation of gaseous inclusions in the dielectric fluid during normal use.

This invention relates to the field of pesticides, specifically to a fungicide composition for foliar spraying, its preparation method, and application scheme. The active ingredients of the fungicide composition include quinoline copper and phosphite A. Phosphite A is selected from at least one of phosphorous acid, alkali metal salts or alkaline earth metal salts of phosphorous acid, alkylphosphonic acids containing C1-C6 groups of phosphorous acid or alkali metal salts of alkylphosphonic acids, alkaline earth metal salts, and aluminum salts. In the fungicide composition, the weight ratio of quinoline copper to phosphite A is 99:1 to 1:99. The fungicide composition of this invention has high activity against bacterial and fungal diseases occurring in various crops, such as canker and downy mildew, and also exhibits significant synergistic effects. It not only improves the antibacterial or bacteriostatic effect but also broadens the control spectrum. Simultaneously, it can reduce the number of applications and alleviate environmental pressure, thereby achieving the effect of prevention-oriented and integrated pest management.

To provide a continuous flow hydrolysis method for phosphate ester and phosphite ester compounds based on a micro-reaction system.SOLUTION: High-purity phosphoric acid or phosphorous acid compounds are obtained by taking phosphate ester or phosphite ester compounds as raw materials and using a continuous micro-reaction system formed by connecting a micro-mixer, a micro-channel reactor, a back pressure valve and a gas-liquid separator through pipelines.EFFECT: By using a micro-reaction system in comparison with a traditional batch kettle type synthesis method, the method achieves high reaction efficiency, stable product quality, an order-of-magnitude increase in production capacity per unit reactor volume, and, because the reaction system is closed, avoids volatilization of organic matter and is environmentally friendly and non-toxic during the production process.SELECTED DRAWING: Figure 1

This invention provides a lysis buffer, kit, and method for extracting microbial nucleic acids. The lysis buffer contains guanidine salt, anionic surfactant, inorganic salt, nonionic surfactant, tris(hydroxymethyl)aminomethane, and phosphite. By using phosphite in combination with other components in the lysis buffer, the lysis effect on structurally complex microorganisms such as fungi is improved without affecting the nucleic acids of structurally simple microorganisms such as viruses released earlier. This invention also provides a nucleic acid extraction kit containing the lysis buffer, enabling the co-extraction of nucleic acids from multiple microorganisms. The kit and extraction procedure of this invention, when used together, can obtain high-quality nucleic acids from different microorganisms in various infected samples; it shortens the extraction time for different microbial nucleic acids, simplifies the operation process, and reduces extraction costs.

The invention discloses a zinc-free environment-friendly antirust pigment and a preparation method thereof, the antirust pigment comprises the following raw materials by weight: 20-80 parts of phosphorous acid, 1-60 parts of phosphoric acid, 40-80 parts of a calcium source, 1-20 parts of a strontium source, and 0.5-5 parts of a coupling agent, and the strontium source does not contain strontium chromate. The preparation method comprises the processes of mixed reaction, centrifugation, washing, centrifugation, drying, ultra-fine crushing-dry method modification and the like. The phosphite and the phosphate are used as main raw materials, the strontium source without strontium chrome yellow and the coupling agent are used as auxiliary materials, a plurality of components have a synergistic effect, and the prepared superfine zinc-free environment-friendly anti-rust pigment has excellent anti-rust performance and can replace the strontium chrome yellow to be applied to an anti-corrosion coating.

The invention discloses a pyrophosphite flame retardant and a preparation method thereof. The preparation method comprises the following steps: (1) preparing mixed powder of urea phosphite and melamine phosphite; (2) respectively carrying out two-stage temperature control heating and chemical dehydration polymerization on the mixed phosphite powder obtained in the step (1) to obtain ammonium pyrophosphite (melamine); and (3) crushing the ammonium pyrophosphite (melamine) block material obtained in the step (2), and screening to obtain a pyrophosphite flame retardant powder product. When the product is applied to nylon 6 as a flame retardant, the product has better flame retardance and mechanical properties.

The invention relates to the technical field of printed circuit boards, in particular to a solution, a preparation method of a printed circuit board, the printed circuit board and electronic equipment. The solution comprises: a first compound selected from at least one of nitrogen-containing carboxylic acid and salts thereof, and water-soluble amine compounds; a second compound selected from at least one of hydroxyl-containing carboxylic acids and salts thereof; and a third compound selected from hypophosphite. According to the solution provided by some embodiments of the invention, through the synergistic effect of the first compound, the second compound and the third compound, small molecules and molecules with low polymerization degree in the ink are selectively dissolved out in advance on the premise of not damaging the integrity of the main body structure of the solder resist ink; and the dissolution amount of the solder resist ink in the chemical plating bath solution in the subsequent chemical plating treatment process is reduced, and the bath solution is effectively protected from being polluted, so that the reduction of the deposition rate of a chemical plating layer is slowed down, the uniformity of the thickness of the plating layer is ensured, the quality defects such as skip plating, gold surface color difference and nickel corrosion are reduced, and the product yield is improved.

The invention provides a phosphite dehydrogenase mutant, a recombinant vector, a recombinant genetically engineered bacterium and application thereof, and a method for synthesizing reduced beta-nicotinamide mononucleotide, and belongs to the technical field of biological enzyme engineering. The phosphite dehydrogenase is derived from a soil metagenome library, has extremely high alkali resistance and meets the characteristic of NMNH alkaline condition stability, multi-point combined mutagenesis is carried out on the basis of a wild type, the enzyme catalytic activity is finally improved by 87 times, the reaction is short-time and efficient, purification is easy, and industrial production is facilitated.

Melamine phosphite / aluminum phosphite with core-shell structure and preparation method thereof, the present application belongs to flame retardant, in order to further improve the performance of melamine-based flame retardant, the present application synthesizes a novel flame retardant material with core-shell structure by hydrothermal method through melamine phosphite and aluminum phosphite, and the core-shell structure is formed by using surfactant.The beneficial effects of the present application are as follows: (1) the particle size D50 of melamine phosphite can be controlled in 0.8-2.0 mu m through quaternary ammonium salt type surfactant and reaction temperature, and the dispersibility of the product is enhanced; (2) the thickness of the shell can be controlled to improve the decomposition temperature of the final product, and the decomposition temperature of melamine-based flame retardant is increased from about 260 DEG C to 400-450 DEG C, and the product particle size D50 can be controlled in 15-20 mu m; (3) the release rate of gas is effectively slowed down, and the gas phase flame retardation of melamine phosphite is enhanced.

An electronic device according to an embodiment of the present invention includes a display and a housing, where the housing includes: an outer frame which includes a polymer material, which forms at least a part of the outer surface of the housing, and which is positioned to protect at least a part of the outer perimeter of the display; and an inner bracket which includes a metal material, which is coupled to the outer frame, and on which the display and the inner constituent elements of the electronic device are mounted. The polymer material includes a new polycarbonate polymer, a recycled polycarbonate polymer, a phosphite-based additive and an acrylic copolymer.

The hypophosphite is used for inhibiting a syntrophic methanogenesis effect or the growth of hydrogen nutritional methanogens, and a plant gene is modified to contain and express a heterologous hypophosphite / 2-oxoglutarate dioxygenase htxa gene, so that reduced phosphorus, such as hypophosphite, can be used as a phosphorus source; and hypophosphite and phosphite fertilizer modifiers are used as phosphorus sources for soil microorganisms to increase carbon storage in deep deposits.

The present invention relates to an aqueous suspension, its preparation and use as an accelerator for mineral binders, comprising: a) 5 to 65% by weight of calcium hydroxide in the form of suspended nanoparticles, relative to the total weight of the aqueous suspension; b) optionally at least one organic compound for stabilizing the aqueous suspension against settling; and c) at least one salt of an alkali metal or alkaline earth metal, preferably at least one of the hydroxides, nitrates, nitrites, phosphates, phosphites, sulfates, thiocyanates, carbonates, bicarbonates, silicates, aluminates, formates, acetates, lactates, citrates, tartrates and / or gluconates of alkali metals or alkaline earth metals.

A battery that cycles lithium ions includes a positive electrode and a liquid electrolyte infiltrating the positive electrode. The electrolyte includes an organic solvent mixture, a primary lithium salt, a fluoroborate salt, a phosphite additive, and a solid electrolyte interphase (SEI)-forming additive in the organic solvent mixture. The organic solvent mixture includes ethylene carbonate and ethyl methyl carbonate. The fluoroborate salt constitutes, by weight, greater than or equal to 0.1% and less than or equal to 2% of the electrolyte. The phosphite additive constitutes, by weight, greater than or equal to 0.01% and less than 3% of the electrolyte. The positive electrode includes an electroactive material comprising a layered lithium-rich and manganese-based transition metal oxide (LRMO).