101 results about "Phosphite salt" patented technology

The invention relates to melamine phosphite / aluminum phosphite with a core-shell structure and a preparation method of the melamine phosphite / aluminum phosphite, belongs to flame retardants, and in order to further improve the performance of a melamine-based flame retardant, melamine phosphite and aluminum phosphite are synthesized into a novel flame-retardant material with the core-shell structure through a hydrothermal method. Formation of a core-shell structure is promoted by using a surfactant. The preparation method disclosed by the invention has the beneficial effects that (1) the particle size D50 of the melamine phosphite can be controlled to be 0.8-2.0 microns through the quaternary ammonium salt type surfactant and the reaction temperature, so that the dispersity of the product is enhanced; (2) the thickness of a finished shell can be controlled, so that the decomposition temperature of a final product is increased, the decomposition temperature of the melamine-based flame retardant is increased from about 260 DEG C to 400-450 DEG C, and the particle size D50 of the product can be controlled to be 15-20 microns; and (3) the release rate of gas is effectively slowed down, and the gas-phase flame retardant effect of the melamine phosphite is enhanced.

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 invention provides a lysis solution, a kit and a method for extracting microbial nucleic acid. The lysis solution comprises guanidine salt, an anionic surfactant, inorganic salt, a nonionic surfactant, trihydroxymethyl aminomethane and phosphite. The phosphite is compounded with other components in the lysis solution, so that the lysis effect on microorganisms with complex structures such as fungi is improved, and meanwhile, nucleic acid of microorganisms with simple structures such as viruses released in advance is not influenced; the invention further provides a nucleic acid extraction kit containing the lysate, and co-extraction of nucleic acid of various microorganisms is achieved. The kit provided by the invention is matched with an extraction program for use, so that high-quality nucleic acid of different microorganisms in various infected samples can be obtained; the nucleic acid extraction time of different microorganisms is shortened, the operation process is simplified, and the extraction cost is reduced.

The invention provides a copper-containing plating solution and a method for plating copper on the surface of graphene, and belongs to the technical field of chemical plating. The copper-containing plating solution provided by the invention comprises copper sulfate pentahydrate, hypophosphite, glyoxylic acid, ethylenediamine tetraacetic acid tetrasodium salt, sodium citrate and deionized water. The glyoxylic acid in the copper-containing plating solution can quickly provide electrons in the initial reaction stage, so that copper ions are quickly nucleated; hypophosphite can continuously reduce copper ions in the plating solution into copper atoms, and continuous growth of a copper layer is achieved; tetrasodium ethylene diamine tetraacetate and copper ions can form a complex with high stability, and the copper ions are slowly released; sodium citrate is used as an auxiliary complexing agent, so that the discharge potential can be adjusted, and the deposition process of copper ions is further optimized, so that compact coating of a to-be-plated copper matrix is realized, and the copper plating effect is effectively improved. Results of the embodiment show that the copper-containing plating solution provided by the invention can form a compactly coated copper layer on the surface of graphene.

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.

A halogen-free flame retardant polymer composition is disclosed. The polymer composition comprises a thermoplastic polymer, such as polybutylene terephthalate. The thermoplastic polymer is combined with a flame retardant, which comprises a phosphinate, a phosphite and a nitrogen-containing synergist. In addition, the composition may contain a fluorine-containing polymer and an organic metal compatibilizer. Even if the flame retardant composition contains a thermoplastic polymer in an amount greater than 60 wt %, the flame retardant composition exhibits excellent flame retardancy.

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.

The invention relates to an environment-friendly flame retardant melamine phosphite as well as a preparation method and application thereof, belongs to the technical field of flame retardants, and aims to overcome the defects and deficiencies in the prior art, melamine, phosphorous acid (and salts thereof) and a modifier are used as raw materials to prepare the melamine phosphite. The preparation method disclosed by the invention has the beneficial effects that (1) the preparation method is simple to operate, low in production cost and easy for batch production; (2) the flame retardant has the advantages of flame retardance when an acid source, a gas phase and a condensation phase are in the same time, corrosion resistance, low smoke, low toxicity, difficulty in moisture absorption, high temperature resistance and the like; (3) the flame retardant can be well dispersed in a matrix, has good flame retardant property and is not easy to separate out; and (4) the melamine phosphites with different particle sizes are obtained through screening, so that the requirements of different polymer products on the particle sizes are met.

The invention discloses a method for removing polymorphic inorganic phosphorus, and belongs to the technical field of environmental material preparation and application. The method comprises the following steps: adding a biomass-based modified iron-based organic framework composite material and an oxidizing agent into the nickel-containing electroplating wastewater, oscillating and adsorbing at normal temperature, and removing polymorphic inorganic phosphorus in the nickel-containing electroplating wastewater; wherein the polymorphic inorganic phosphorus comprises phosphate, phosphite and nickel complex phosphite. The biomass-based modified iron-based organic framework composite material prepared by the invention can realize complex breaking adsorption of a heavy metal-phosphorous acid complex, oxidative adsorption of phosphite and adsorption of orthophosphate in electroplating wastewater in one step, and has the maximum adsorption capacities of 2.26 mmol / g, 1.89 mmol / g and 2.77 mmol / g on phosphate, phosphite and nickel complex phosphite respectively; in practical application, the loss amount does not exceed 3%, and the applicable pH range is wide.

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 discloses a regeneration method of nickel-phosphorus alloy electroplating waste liquid. The content of phosphite in the waste liquid is greater than 40 g / L; phosphate is greater than 15 g / L; the total phosphorus element content is greater than 25 g / L; the method comprises the following specific steps: diluting the waste liquid, and adding a sulfuric acid solution with the concentration of 15-20wt%, so that the pH value of the waste liquid is less than 2; adding an oxidizing agent to oxidize phosphite radicals into phosphate radicals; adding a precipitant ferrous sulfate solution to form ferric phosphate precipitate; adding a sodium hydroxide solution, and adjusting the pH value of the waste liquid to 3.0-3.5; cooling, standing and filtering to obtain a filtered clear liquid; and adding a main salt, a complexing agent and a phosphorus increasing agent into the filtered clear liquid to obtain a regenerated liquid, and finally adjusting the pH value of the regenerated liquid to 2.7-2.9 by using a sulfuric acid solution, so that the regenerated liquid meets the plating requirements. The regenerated plating solution has the indifferent system effect on a plated workpiece from a new plating solution, and the service life of the electroplating nickel-phosphorus alloy plating solution can be remarkably prolonged.

Hypophosphite is used to inhibit syntrophic methanogenesis or growth of hydrogenotrophic methanogens, plants are genetically engineered to comprise and express a heterologous hypophosphite / 2-oxoglutarate dioxygenase htxa gene to enable the use of the reduced phosphorus, such as hypophosphite as a phosphorus source, and hypophosphite and phosphite fertilizer amendments are utilized as phosphorus sources by soil microorganisms, to increase carbon storage in deep sediments.

The invention discloses a low-stress high-strength nickel-phosphorus alloy electroplating solution and a preparation method and application thereof, and belongs to the technical field of nickel electroplating. The plating solution comprises nickel aminosulfonate, lactic acid and / or lactate, phosphorous acid and / or phosphite, saccharin and / or saccharin salt, and a solvent of the plating solution is water; the molar ratio of nickel aminosulfonate to lactic acid and / or lactate is 0.7 < = M nickel aminosulfonate / M lactic acid and / or lactate < = 1, the molar ratio of phosphorous acid and / or phosphite to saccharin and / or saccharin salt is 2 < = M phosphorous acid and / or phosphite / M saccharin and / or saccharin salt < = 8, and the pH value of the plating solution is 3.0-4.5. According to the low-stress high-strength electroplating nickel-phosphorus alloy plating solution as well as the preparation method and the using method thereof, an obtained nickel-phosphorus alloy plating layer is controllable in stress, and the strength of the nickel-phosphorus alloy plating layer is remarkably superior to that of pure nickel and nickel-cobalt alloy plating layers.

Ni3Fe-LDH@NiCoP / NF Heterojunction High-Efficiency Overall Water Splitting Electrocatalyst and Its Preparation Method and Application. The present invention belongs to the field of electrolytic water catalytic materials. The purpose of the present invention is to solve the technical problems that the Ni3Fe-LDH@NiCoP / NF heterojunction electrocatalyst synthesized by the current hydrothermal method is not conducive to electron transport, and at the same time the preparation process is complex, time-consuming, and toxic and harmful gases are generated during the phosphating treatment process. In the present invention, nickel salt, cobalt salt, phosphite, NH4Cl and CH3COONa are used as electrolytes, and the pretreated nickel-based material is used as the working electrode, and NiCoP-x is grown by constant current deposition; then nickel salt and iron salt are used as electrolytes, and the above product is used as the working electrode, and Ni3Fe-LDH is grown by constant voltage deposition to obtain a Ni3Fe-LDH@NiCoP / NF heterojunction high-efficiency overall water splitting electrocatalyst.

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.

The present disclosure relates to genetically modified cells containing mitochondria that have been transformed with a polynucleotide encoding a phosphite dehydrogenase enzyme, such that the cells can utilize phosphite as a phosphorus source.