43 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 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 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 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.

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 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 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.

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).

The invention discloses an autotrophic biocatalyst for producing indigo blue and derivatives thereof and application of the autotrophic biocatalyst, and relates to the field of bioengineering. The autotrophic biocatalyst is synechococcus engineering bacteria, and the synechococcus engineering bacteria are constructed by the following steps: cloning exogenous genes into plasmids in series, introducing exogenous gene segments on the plasmids into a synechococcus genome through homologous recombination, and screening to obtain a positive recombinant strain. According to the invention, a novel engineering photosynthetic microorganism catalyst is constructed, and an autotrophic production system independent of an organic carbon source is created by carrying out innovative modular assembly on an indigo synthesis route and a reducing power regeneration system dependent on phosphite. According to the method, cheap light energy, CO2 and industrial-grade phosphite are used as main raw materials, dependence on expensive saccharides is avoided, the method has the multiple advantages of being low in raw material cost, high in production efficiency, environmentally friendly and the like, and a feasible industrial path is provided for large-scale and low-cost clean production of indigo blue and derivatives of indigo blue.

The invention relates to the technical field of phosphorus-containing sludge treatment, and particularly discloses a treatment method of phosphorus-containing sludge. The phosphorus-containing sludge treatment method disclosed by the invention comprises the following steps: feeding, hydrolyzing, filtering, neutralizing and oxidizing, carrying out filter pressing, evaporating at low temperature and recycling condensed water. The hydrolysis comprises the following steps: controlling the reaction temperature to be lower than 50 DEG C according to the mass ratio of the phosphorus-containing sludge to the water being 1: (3-5), and carrying out hydrolysis reaction for 1-2 hours to obtain hydrolysate; neutralizing and oxidizing: neutralizing the filtered filtrate until the pH value is 7-8; then adding an oxidizing agent to oxidize residual simple substance phosphorus and phosphite into phosphate to obtain oxidation liquid; the method for treating the phosphorus-containing sludge is simple, efficient and low in energy consumption, efficient treatment of the phosphorus-containing sludge is achieved, calcium phosphate and calcium chloride products can be obtained, and the method has wide industrial application prospects.

The application discloses a kind of phosphorus ruthenium supported globular carbon nitride photocatalyst and its preparation method and application.A kind of phosphorus ruthenium supported globular carbon nitride photocatalyst preparation method, comprising the following steps: melamine solution, cyanuric acid solution is mixed and stirred, to obtain globular precursor;Globular precursor is calcined to obtain globular carbon nitride;Globular carbon nitride is dispersed in solvent, add ruthenium trichloride hydrate, stir, add sodium borohydride reduction, to obtain ruthenium supported globular carbon nitride;Ruthenium supported globular carbon nitride is placed with hypophosphite under protective atmosphere calcination to obtain the phosphorus ruthenium supported globular carbon nitride.The phosphorus ruthenium supported globular carbon nitride photocatalytic material prepared by morphology control and catalyst support in the application has a large specific surface area, effectively inhibits the recombination of photo-generated electron-hole, improves the visible light response performance and photocatalytic activity of the material, and has good photocatalytic degradation of new pollutants and hydrogen production performance.

The application provides a cyano-containing phosphite salt additive, characterized in that the additive has a structure as shown in formula (I) and / or formula (II). The cyano-containing phosphite salt additive with a specific structure and composition designed by the application is used as a lithium ion battery lithium supplement agent, is used for supplementing active lithium lost in the first cycle of lithium ion battery self-sacrifice charging and discharging, improves the first cycle coulomb efficiency, and after the end of delithiation, the phosphorous acid and -CN functional groups of the cyano-containing phosphite salt additive are dissolved in electrolyte, participate in the formation of an SEI film, inhibit the decomposition of electrolyte, and improve the high-temperature cycle performance of the battery. In addition, the phosphite salt organic lithium supplement agent has high water oxygen stability, and solves the problem of harsh use and storage conditions of traditional positive electrode lithium supplement agents.

The invention belongs to the technical field, and particularly relates to PA6T / 66 copolymerized high-temperature nylon and a production process, the PA6T / 66 copolymerized high-temperature nylon is composed of a basic comonomer, a catalyst and a functional auxiliary agent, the basic comonomer comprises the following components in percentage by mass: 42.8-45.1% of hexamethylenediamine, 30.2-35.6% of terephthalic acid and 21.2-26.6% of adipic acid, the hexamethylenediamine is pretreated by sodium bicarbonate, the catalyst is added into the basic comonomer, and the functional auxiliary agent is added into the catalyst. Terephthalic acid is subjected to surface activation and solubility modification treatment; the catalyst is a phosphite catalyst, and the addition amount of the catalyst is 0.05-0.1% of the total amount of the basic comonomer; the functional auxiliary agent comprises at least one of a compound antioxidant, an organic nucleating agent and a silane modified reinforcing agent. According to the invention, the problems of nonuniform dissolution and easy oxidation to generate impurities caused by hydrophobicity are solved through modification treatment of the copolymerized core monomers terephthalic acid and hexamethylenediamine, and appropriate process parameters are matched according to the characteristics of the modified monomers, so that the improvement of the reaction uniformity of the PA6T / 66 copolymerized high-temperature nylon and the stability of the product performance are realized.

The present technology is based on a waste salt of diethyl methyl phosphite, and fine separation and resource utilization of the waste salt with high salt, rich aluminum, phosphorus and organic matter are carried out to prepare a large amount of water treatment agent and new coating material. The waste salt is subjected to steps of dissolution-oxidation-blown off-filtration-odor removal, organic phosphorus is oxidized and converted into phosphite, and deep dephosphorization and accumulation of phosphite are carried out by adsorption. Calcium and zinc oxides are added to prepare phosphite corrosion-resistant coating. The precipitated aluminum hydroxide is cleaned, dissolved, adsorbed, dephosphorized and oxidized to prepare low-sodium dephosphorized polyaluminum ferric chloride. The collected solution is a low-phosphorus and aluminum-free near-saturated salt solution, which is electrolyzed to prepare water treatment agents such as liquid caustic soda and sodium hypochlorite.

The invention discloses a nickel-based catalyst as well as a preparation method and application thereof. The preparation method of the nickel-based catalyst comprises the following steps: S1, carrying out electro-deposition on a deposition solution in a three-electrode system taking foamed nickel as a working electrode; a precursor material is obtained; the deposition liquid comprises nickel salt, cobalt salt, thiourea and a phosphorus source; the phosphorus source comprises hypophosphite and / or phosphite; and S2, carrying out annealing treatment on the precursor material. The nickel-based catalyst prepared by the preparation method disclosed by the invention is applied to a urea oxidation reaction and has relatively good catalytic activity and stability.

The invention relates to a two-part dual cure dental composition with improved stability toward discoloration and premature polymerization. The dental composition comprises a Base Part and a Catalyst Part, the Base Part comprising polymerizable component(s) without an acidic moiety, optionally polymerizable component(s) with an acidic moiety, filler(s), transition metal component(s), peroxide component(s), stabilizer component(s) comprising a free-radical moiety, the Catalyst Part comprising polymerizable component(s) without an acidic moiety, filler(s), ascorbic acid component, photo-initiator system, stabilizer component(s) comprising a phosphite or sulfite moiety. The dental composition is in particular useful as bulk fill dental composite, dental resin cement, core build-up dental material or self- and dual cure dental adhesive. The invention further relates to an initiator system and the use of a stabilizer comprising a free-radical moiety.