98 results about "Phosphinic Acids" patented technology

The invention provides a polyamide composite material and application thereof. The polyamide composite material comprises the following components in parts by mass: 35-82 parts of polyamide resin, 5-45 parts of a reinforcing material and 5-25 parts of an organic phosphonate flame retardant, the water-soluble acid value of the organic phosphonate flame retardant is 0.1 to 0.3 mg KOH / g. By adopting the organic phosphonate flame retardant with a low acid value, the generation of dialkyl phosphinic acid decomposed in a high-temperature process can be slowed down, so that the amount of mold scale generated in an injection molding process of the polyamide composite material is obviously reduced, and the injection molding production efficiency is improved; meanwhile, the polyamide composite material has the advantages that the content of water boiling precipitates is obviously reduced, the damp-heat-resistant stability is excellent, and the service life of the polyamide composite material under damp-heat conditions is prolonged.

The invention provides an aqueous zinc ion battery electrolyte, a preparation method thereof and a zinc ion battery, and belongs to the technical field of aqueous zinc ion batteries. The aqueous zinc ion battery electrolyte comprises an additive, an inorganic zinc salt and a solvent, the additive comprises at least one of trimethylamine substituted by 1-3 substituent groups, benzene and C3-C10 straight-chain alkane, and the substituent groups comprise phosphonic acid groups or phosphinic acid groups; the solvent comprises a sodium chloride aqueous solution. By adopting the additive with a specific structure and the solvent containing the sodium chloride aqueous solution, the cycle performance of the zinc negative electrode in the water-based zinc ion battery can be remarkably improved, and the service life of the water-based zinc ion battery is prolonged.

The organic phosphonic acid polymer flame retardant is prepared by taking organic phosphinic acid containing alkylene as an initiator, and the organic phosphonic acid polymer flame retardant is high in phosphine content and convenient to synthesize. The synthesized organic phosphonic acid polymer flame retardant can provide better flame retardant property under the condition of lower additive amount, and as the organic phosphonic acid polymer flame retardant is a polymer, has large molecular weight and does not contain metal ions, a better bicontinuous phase is formed in resin, so that the resin has higher retention rate of mechanical property and electrical property, and the flame retardant has better flame retardant property. The flame retardant can be widely applied to the technical field of flame retardants.

Provided is a polyamide composition having excellent metal corrosion resistance properties, weld strength, tensile strength, and flame retardancy. The present invention provides a polyamide composition which contains prescribed amounts of (A) a polyamide, (B) a phosphorus-based flame retardant, and (C) an inorganic filler, and in which said (B) contains a phosphinic acid-phosphonic acid-based composite metal salt represented by general formula (1), and the particle size of said (B) satisfies a prescribed condition.

The invention relates to the technical field of high polymer materials, in particular to a polyethylene flame-retardant master batch and a production process thereof. The polyethylene flame-retardant master batch is prepared from the following raw materials in parts by weight: 50 to 60 parts of polyethylene, 10 to 20 parts of hydroxymethyl phosphinic acid, 15 to 20 parts of HDPE-g-MAH, 0.8 to 1.5 parts of an initiator, 1 to 2 parts of an antioxidant and 3 to 6 parts of functional particles. The polyethylene is selected from high-density polyethylene, and the melt index of the polyethylene is 7-20g / 10min under the conditions of 190 DEG C and 2.16 kg; the polyethylene flame-retardant master batch produced by the invention not only can effectively enhance the flame retardant property of a polyethylene product, but also can effectively improve the anti-aging property of the polyethylene product; and the service life of the polyethylene product is prolonged to a certain extent while the quality of the polyethylene product is ensured.

Compositions and products formed thereof are based on glass fiber-reinforced polyamide admixed with at least one secondary aromatic amine, at least one phosphinic acid derivative and bis(2,4-di-t-butylphenyl)pentaerythritol diphosphate in amounts to improve ageing behavior in the form of improved preservation of the elongation at break and impact toughness, improved color preservation or improved color stability, and simultaneously improved UV stability after thermal ageing by comparison with products based on glass fiber-reinforced polyamide with such a mixture.

The invention belongs to the technical field of synthesis of extraction agents, and particularly relates to a preparation method and application of amido diphosphinic acid. The preparation method comprises the following steps: (1) mixing a solvent, primary amine, cyclohexylphosphinic acid and inorganic acid, and heating until the solution is clear and transparent; (2) adding a formaldehyde solution or paraformaldehyde into the clear and transparent solution for reaction; and (3) removing a water phase from the mixture obtained after the reaction in the step (2) is finished, dissolving jelly obtained after the water phase is removed by using dichloromethane, and carrying out washing, rotary evaporation and drying to obtain the amido diphosphinic acid.

The application discloses a kind of superdispersion flame-retardant engineering plastic master batch and preparation method thereof, it is related to functional plastic technical field, including functional master batch, the functional master batch includes the following components by weight parts: nylon 6 sheet 100 parts, modified carbon nanotube 0.5-8 parts, diethyl phosphinic acid ethyl aluminum 5-15 parts, flame retardant 5-15 parts, carbon forming agent 2-5 parts, epoxy silicon dioxide 0.5-5 parts, compatible agent 0.5-5 parts.The application introduces diethyl phosphinic acid ethyl aluminum and flame retardant, forms carbon layer on the material surface when plastic master batch burns, and the interaction between the molecular chains of plastic master batch is improved by Schiff base structure, realizes the double performance improvement of plastic master batch flame retardant and anti-dripping, solves the problem of fire spread caused by melt dripping.

The invention relates to a method for continuously preparing alkyl diaryl phosphonate, which comprises the following steps of: a, reacting trialkyl phosphite and triaryl phosphite in a high-temperature section filled with a solid catalyst to obtain a reaction product; and b, removing low-fraction byproducts in the reaction product in the step a through reduced pressure distillation or fractionation at the outlet of the high-temperature section, feeding the residual product into a cooling section, collecting a crude product of the alkyl diaryl phosphonate at the outlet of the cooling section, and carrying out post-treatment to obtain the alkyl diaryl phosphonate. A continuous catalytic reaction is carried out through the solid catalyst filled in the tubular reactor, and an intermittent reaction is changed into a continuous reaction, so that the liquid holdup is greatly reduced, and the safety coefficient of production is improved; a traditional halogenated alkane catalyst is not used, so that the risk that the temperature rise is out of control is effectively reduced; according to the method, the reaction time is shortened while the reaction yield is not reduced, and the production efficiency is improved.

This invention provides a disubstituted phosphonate compound, its preparation method, and its applications, belonging to the technical field of organophosphorus flame retardants. The disubstituted phosphonate compound provided by this invention exhibits excellent flame retardant properties. It is synthesized in a one-step process using phosphonates and halogenated compounds as raw materials. Compared to existing traditional synthesis methods, this method offers higher yields, fewer and easier-to-separate byproducts, a simpler process, shorter processing time, greater safety and environmental friendliness, lower cost, and easier implementation. The flame-retardant epoxy resin cured products prepared using the disubstituted phosphonate compound as a raw material exhibit excellent flame retardant properties and are transparent and clear. The flame-retardant epoxy resin cured product specimens prepared in Examples 1-3 of this invention show significantly better flame retardant effects than those in Comparative Examples 1-2. Furthermore, the flame-retardant epoxy resin cured products prepared in Examples 1-3 are all clear and transparent with superior physical properties.

The invention relates to the technical field of aluminiferous rock series ore processing, in particular to a method for sorting and extracting titanium concentrate from aluminiferous rock series ore. The method comprises the steps that the aluminiferous rock series ore is subjected to crushing and first grinding in sequence, and first ore pulp is obtained; the first ore pulp is subjected to desiliconization direct flotation through a first acid-base regulator and a first collecting agent, and desiliconized rough concentrate pulp is obtained; the first collecting agent comprises at least one of sodium oleate, sodium benzohydroxamic acid and sodium salicylhydroxamic acid; the desilicication rough concentrate pulp is subjected to secondary grinding, and second ore pulp is obtained; performing micro-bubble flotation on the second ore pulp by using a second pH regulator, an inhibitor, an activating agent, a second collecting agent and a foaming agent to obtain titanium concentrate; and the second collecting agent comprises (2-hydroxy-2-methyl propyl) (phenyl) phosphinic acid, diphenyl phosphinic acid and diisooctyl phosphinic acid. According to the method, the yield of the titanium concentrate is increased through the synergistic effect of stage grinding separation, precise reagent matching and micro-bubble enhanced separation.

The application provides a flame retardant composition and application thereof and a polyamide composite material, the flame retardant composition comprises 5-15 parts of a dialkyl phosphinic acid metal salt and 0.5-4 parts of an imidazolium dialkyl phosphinate salt in terms of weight parts. The flame retardant composition, by compounding the imidazolium dialkyl phosphinate salt with the dialkyl phosphinic acid metal salt, can effectively improve the flame retardant efficiency, mechanical properties and precipitation resistance of the material, and meanwhile can reduce the content of the dialkyl phosphinic acid metal salt in the resin system.

The present application relates to the technical field of fuel additive, in particular to a high-energy cleaning type composite solid fuel additive and a preparation method thereof. The additive comprises the following raw materials: myristic acid, stearic acid, a composite catalytic unit, modified soybean lecithin, tributyl borate, butylated hydroxyanisole and polyethylene glycol monostearate. The composite catalytic unit is prepared by coordination of diethyl phosphinic acid with manganese chloride, lanthanum chloride and cerium chloride; the modified soybean lecithin is obtained by ammonolysis and intramolecular lactonization and contains a five-membered cyclic phosphonate structure. During preparation, the components are dispersed by ultrasonic dispersion after being loaded on a melting carrier, and then solidified and formed. The additive realizes cleaning and repair integration through double-metal synergistic catalysis and combustion strengthening, and the composite carrier can controllably release and adapt to all working conditions. The product is soft and easy to discharge, has high economic efficiency and environmental compatibility, and is convenient to store and use.

The invention discloses a flame-retardant electrolyte, an electrochemical energy storage device and a lithium ion secondary battery, and belongs to the technical field of lithium ion batteries. The flame-retardant electrolyte comprises a flame-retardant additive, and the flame-retardant additive is a novel phosphinic acid silicone grease compound. The electrochemical cell comprising the flame-retardant electrolyte exhibits improved high-temperature use safety and maintained performance of the electrochemical cell.

The invention relates to a waterproof anticorrosive paint and a preparation method thereof, and belongs to the technical field of paints.The paint comprises a component A and a component B, the component A comprises organic titanium-silicon-POSS (Polyhedral Oligomeric Silsesquioxane) hybrid resin, intercalation modified hydrotalcite-boron nitride composite barrier filler and the like; and the component B comprises a nitrogen-phosphorus modified amine composite curing agent, an interface metal anchoring accelerator and the like. The organic titanium-silicon-POSS hybrid resin is prepared by carrying out a reaction on tetraisopropyl titanate, 2, 3-dihydroxy naphthalene, methyltrimethoxysilane, KH-792 and octa-amino POSS (Polyhedral Oligomeric Silsesquioxane). The intercalation modified hydrotalcite-boron nitride composite barrier filler is prepared by stirring magnesium-aluminum hydrotalcite powder, phytic acid and KH-550 modified boron nitride nanosheets. The nitrogen-phosphorus modified amine composite curing agent is prepared from tris (2-aminoethyl) amine, hydroxymethyl phenyl phosphinic acid, p-toluenesulfonic acid and a T-31 epoxy resin curing agent. The interface metal anchoring accelerant is prepared from triethylamine, absolute ethyl alcohol and 2-aminoethyl phosphonic acid.

A triphosphinate compound of formula (III), wherein R1 and R2 are the same or different and independently represent H or a C1-C10 alkyl, with the proviso that R1 and R2 may not each be H simultaneously, and wherein R3 is a C1-C8 alkylenyl group. Said triphosphinate may be obtained from a reaction of at least one phosphinic acid with an triol, and is found to be particularly suitable to use as a flame retardant for polymer and polymer foam material.

Described herein is a method of preparing an ionic liquid comprising a nitrogen or phosphorus cation and a bis(fluorosulfonyl)imidate (FSI) counter anion; the method comprising contacting a precursor selected from the group consisting of a tertiary amine, a tertiary phosphine, and an aromatic nitrogen heterocycle, with an alkyl bis(fluorosulfonyl)imidate in an aprotic solvent to alkylate the nitrogen or phosphorus of the precursor, and directly form a nitrogen or phosphorus cation with an FSI counter anion.

The application provides a polyamide composite material and application thereof, and the polyamide composite material comprises the following components in parts by mass: 35-82 parts of a polyamide resin, 5-45 parts of a reinforcing material, and 5-25 parts of an organic phosphonate flame retardant; the water-soluble acid value of the organic phosphonate flame retardant is 0.1-0.3 mg KOH / g. By using the organic phosphonate flame retardant with a low acid value, the application can slow down the decomposition of dialkyl phosphinic acid in the high-temperature process, so that the amount of mold dirt generated in the injection molding process of the polyamide composite material is obviously reduced, thereby improving the injection molding production efficiency; meanwhile, the polyamide composite material has a significantly reduced water boiling leachate content, excellent wet heat resistance, and a prolonged service life under a wet heat condition.

A composition for encapsulation, which contains a photopolymerizable compound and a photopolymerization initiator, and wherein the photopolymerization initiator comprises one or two selected from the group consisting of ethyl (2, 4, 6-trimethylbenzoyl) phenylphosphonate and phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide.

The present invention provides a perfluoroalkyl compound and a method for measuring the concentration of a polyfluoroalkyl compound, as well as a liquid chromatograph / tandem mass spectrometry system. The measurement method measures, by liquid chromatograph / tandem mass spectrometry, in a single measurement of eluting a sample with an alkaline mobile phase, the concentrations of a plurality of types of perfluoroalkyl compounds and polyfluoroalkyl compounds in the sample, including at least one or more perfluoroalkyl phosphonic acid / phosphinic acid-based compounds or polyfluoroalkyl phosphate ester-based compounds. By using an alkaline mobile phase for eluting the sample, the measurement method can complete a rapid analysis of 93 types of PFASs including perfluoroalkyl phosphonic acid / phosphinic acid-based compounds and polyfluoroalkyl phosphate ester-based compounds with a single injection.

The invention discloses a high-efficiency halogen-free plastic flame-retardant additive and a preparation method thereof, and relates to the technical field of plastic additives, the high-efficiency halogen-free plastic flame-retardant additive is prepared from the following raw materials by weight: 35-45 parts of a modified porous nanoscale flame-retardant oxide / expanded graphite compound, 8-10 parts of organic phosphinic acid metal salt, 10-12 parts of a phosphorus synergist, 10-12 parts of a nitrogen synergist, and 3-5 parts of a coupling agent; the modified porous nanoscale flame-retardant oxide / expanded graphite compound is a porous nanoscale flame-retardant oxide / expanded graphite compound co-modified by 3-[N, N-dimethyl-[2-(2-methylpropyl-2-enoyloxy) ethyl] ammonium] propane-1-sulfonic acid inner salt, 2, 4, 6-trivinyl boroxane and diphenyl (4-vinyl phenyl) phosphine oxide. The additive is good in environmental protection property, remarkable in flame retardant effect, small in addition amount, good in compatibility with a plastic matrix and small in negative influence on mechanical properties of plastics.

The invention discloses a low-precipitation high-glowing filament halogen-free flame-retardant reinforced polyamide composition and a preparation method thereof. The low-precipitation high-glowing filament halogen-free flame-retardant reinforced polyamide composition comprises the following components in parts by weight: 45-55 parts of polyamide, 15-20 parts of an organic phosphinate flame retardant, 3-5 parts of a flame-retardant synergist, 5-10 parts of a glowing filament synergist, 10-30 parts of glass fibers, 0.1-0.5 part of an antioxidant and 0.2-0.5 part of a lubricant. Wherein the glowing filament synergist is a mixture of metal hydroxide and layered silicate. According to the invention, the glowing filament performance GWIT of a material in a halogen-free phosphinate flame-retardant system can be obviously improved, and meanwhile, the halogen-free phosphinate flame-retardant polyamide composition has excellent flame retardance and mechanical properties, low precipitation and low corrosion, so that the obtained polyamide composition is widely applied to the electronic and electrical industry.

The application relates to the technical field of cables, in particular to a multilayer co-extrusion cable based on a low-smoke halogen-free flame-retardant composite layer and a preparation method thereof, which comprises, from inside to outside, a conductor layer, a double-layer insulation layer, a reinforcing buffer layer and a composite sheath layer; wherein the double-layer insulation layer comprises an inner layer and an outer layer; the inner layer takes ethylene-octene copolymer as a core layer and grafted polyether ester elastomer of norbornene diacid anhydride as a shell layer, and is endowed with high elasticity, impact resistance and insulation layer cracking inhibition; modified nano montmorillonite is dispersed into a nano sheet barrier to delay heat diffusion and realize low smoke and halogen-free; the outer layer is composed of an ethylene-methyl acrylate matrix and aluminum salt of di-tert-butyl phosphinic acid, the aluminum salt of di-tert-butyl phosphinic acid is decomposed into aluminum phosphate at high temperature to form a carbon layer to insulate oxygen and heat, and phosphorus-containing free radicals capture active free radicals to interrupt flame propagation.

The application discloses a kind of flame-retardant nylon compositions and its preparation method and application, belong to engineering plastics field.The flame-retardant nylon composition described in the application includes the following weight parts of components: PA66 resin 10-35 parts, semi-aromatic polyamide resin 5-15 parts, organic phosphinic acid salt flame retardant and synergist 14-26 parts, glass fiber 18-52 parts, in-situ coating agent 0.8-5.3 parts;The in-situ coating agent is ethylene-alkyl acrylate-maleic anhydride copolymer;The semi-aromatic polyamide resin is selected from at least one of PA6I / 6T, MXD6.The flame-retardant nylon composition prepared by the interaction between components has excellent flame-retardant performance, is resistant to boiling, has good appearance, and is especially suitable for bright color product connectors.

A method provides for separating nickel from an aqueous solution using an organic—aqueous extraction by performing one or more liquid-liquid extraction stages performed using an input aqueous solution comprising lithium ions, nickel ions, and cobalt ions and / or manganese ions, wherein each extraction stage comprises mixing an aqueous phase with dissolved metal sulfate with an organic solvent having dissolved di-(2,4,4-trimethylpentyl) phosphinic acid from 30% to 70% hydroxyl saponified with alkali, NH4+ or nickel counter ions. A collected purified aqueous phase comprising at least 90% of the nickel from the input aqueous solution and no more than about 5% of the each of the cobalt and manganese. The input aqueous solution is prepared from recovered lithium ion battery material.

A thermoplastic composition including: a polyester including a poly(alkylene arylate); optionally, a polyetherimide; a flame retardant composition comprising a dialkyl phosphinic acid salt, and optionally; optionally an auxiliary flame retardant comprising melamine polyphosphate, melamine cyanurate, melamine pyrophosphate, melamine phosphate, or a combination thereof; a mineral flame retardant synergist comprising a modified fibrillated magnesium silicate, a modified fibrillated aluminum silicate, or a combination thereof; optionally, glass fibers; and optionally, an additive composition; wherein the sum of the wt% of the polyester, the flame retardant composition, the mineral flame retardant synergist, the optional polyetherimide, the optional glass fibers, and the optional additive composition total 100 wt%, and wherein the thermoplastic composition comprises 1500 ppm or less of intentionally added fluorine, and a sample of the thermoplastic composition exhibits a UL 94 flame test rating of V-0 at a thickness of 1.5 mm.

The invention relates to the technical field of coatings and provides a polymer cement breathable waterproof coating for an outer wall and a preparation method of the polymer cement breathable waterproof coating. A polymer cement breathable waterproof coating for exterior walls is composed of feed liquid and powder, and the feed liquid is prepared from, by weight, 90-95 parts of water-based high-molecular polymer emulsion and 5-10 parts of water; the powder material is prepared from the following raw material components in parts by weight: 45 to 50 parts of cement, 45 to 60 parts of filler and 0.1 to 0.5 part of carbon inhibitor; the carbon inhibitor comprises one or two of a polystyrene-phosphorous acid mixture, tripolyphosphate and pyrophosphate. According to the technical scheme, the problem of poor air permeability of the waterproof coating in the prior art is solved.

The application discloses an ABS composition, a preparation method thereof and a molded part, and belongs to the technical field of polymer materials. The application adds stearate, dihydrocarbyl-substituted phosphinic acid salt, monohydrocarbyl-substituted phosphinic acid salt and a bromine-based flame retardant into ABS resin, and controls the respective dosages of the components in a specific range, so that the obtained composition has good flame retardance and moisture resistance, is suitable for application scenarios with high index requirements for flame retardance and moisture resistance, and can be particularly used for the production and preparation of electronic and electrical products and matched structural parts used in a bathroom environment.

The application discloses a supported phosphine nickel catalyst, a preparation method thereof and application of the catalyst in olefin polymerization, and belongs to the technical field of catalysts. The preparation method comprises the following steps: mixing a ligand, a metal nickel source and an organic solvent under an inert gas atmosphere, adding a metal hydride after reaction at room temperature, obtaining a complex through reaction, adding the complex into an organic solvent in which a carrier has been dispersed, stirring, filtering, washing, and drying to obtain the supported phosphine nickel catalyst; and the structural formula of the ligand is beneficial effects: the application introduces OX groups at the para position of the metal center of the metal complex, improves the loading effect of the metal catalyst by introducing metal ions such as lithium, sodium and potassium to act with the carrier, and controllably exposes the metal active center of the catalyst, so that the metal active center can be coordinated with olefins to generate polyolefins, and the supported ability of the post-transition metal nickel catalyst is endowed, and the supported post-transition metal catalyst can be used to prepare high-energy and multifunctional polyolefin composites with high activity.

The present invention provides a method for recovering cobalt, nickel, manganese and lithium from a waste lithium ion battery by a wet process with a very high recovery rate. The method for recovering valuable metals includes a first solvent extraction step in which an organic solvent is added to a solution that contains lithium and at least one valuable metal selected from the group consisting of magnesium, strontium, aluminum, and transition metals other than manganese, cobalt, and nickel, thereby extracting the valuable metal. The organic solvent includes at least one substance that is selected from the group consisting of a compound represented by formula (1), a phosphonic acid ester, a phosphoric acid ester, phosphinic acid, methyl isobutyl ketone, and trioctylamine. In formula (1), R1 and R2 each independently represent a hydrocarbon group having 6 to 20 carbon atoms.