86 results about "Phosphinidene" patented technology

The invention provides a polyamide composition and application thereof. The polyamide composition comprises the following components in parts by mass: 40-99.5 parts of polyamide, 10-45 parts of a reinforcing material and 5-35 parts of a flame retardant, the flame retardant is prepared from the following components in parts by mass: 30 to 90 parts of diethyl phosphinate, 0.01 to 3 parts of ethyl phosphonate, 5 to 67 parts of dialkyl phosphinate and 0.01 to 5.5 parts of alkyl phosphinate. According to the invention, by introducing the specific flame retardant, an efficient flame retardant effect can be exerted, so that the polyamide composition has excellent flame retardant property and excellent impact resistance.

The invention relates to the field of phosphorus-nitrogen flame retardants, and discloses a preparation method and application of a novel phosphorus-containing nitrogen oxide flame retardant, the preparation method comprises the following steps: S1, under the protection of nitrogen, dissolving diphenylphosphinyl hydroxylamine and triethylamine in a tetrahydrofuran solvent to prepare a reaction substrate solution; s2, slowly dropwise adding a diphenylphosphinyl chloride solution into the solution, and then sufficiently carrying out the reaction in a staged heating and heating reflux mode; s3, cooling and filtering to remove solid byproducts generated by reaction, and concentrating filtrate to obtain a crude product solid; and S4, recrystallizing and purifying the crude product by using ethyl acetate, and finally heating and drying the obtained crystal under a vacuum condition to obtain the product. An N-O group is innovatively introduced into the molecular structure of the flame retardant, so that the effect of efficiently capturing gas-phase free radicals in cooperation with a phosphorus-containing group is achieved, and the substantive technical progress that the material can be endowed with excellent flame retardant property with extremely low addition amount is realized.

The invention discloses a polyamide composite material as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The invention provides a polyamide composite material. The polyamide composite material comprises the following components in parts by weight: 30-60 parts of polyamide resin, 12-32 parts of a brominated flame retardant, 4-12 parts of organic phosphinate, 0.1-1 part of a zirconium compound, 0-50 parts of glass fibers, 0-3 parts of an antioxidant and 0-3 parts of a lubricant, and the particle size D50 of the zirconium compound is 0.08-2 [mu] m. According to the antimony-free halogen-containing flame-retardant polyamide composite material provided by the invention, a traditional bromine-antimony flame-retardant system is synergistically replaced by the organic phosphinate and the zirconium compound, and the prepared polyamide composite material has excellent mechanical properties, flame retardance and thermal decomposition stability.

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 provides a polyamide composition and application thereof, the polyamide composition comprises the following components in parts by mass: polyamide 40-99.5 parts, reinforcing material 10-45 parts, and flame retardant 5-35 parts; the flame retardant comprises the following components in parts by mass: diethyl phosphinate 30-90 parts, ethyl phosphinate 0.01-3 parts, dihydrocarbyl phosphite 5-67 parts, and hydrocarbyl phosphite 0.01-5.5 parts. The application can play the effect of efficient flame retardation by introducing specific flame retardants, so that the polyamide composition has excellent flame retardation and excellent impact resistance.

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 provides a method for preparing sodium diisobutyl dithiophosphinate by using a microreactor, and belongs to the technical field of organic synthesis. The method comprises the following steps: sequentially carrying out impurity removal pretreatment, precooling drying and deep cooling on phosphine gas to obtain high-purity liquid phosphine, the method comprises the following steps: by taking liquid phosphine and isobutene as raw materials, adding an initiator, and carrying out photo-thermal synergistic initiated free radical addition reaction in a microreactor to synthesize diisobutyl phosphorus; the micro-reactor comprises a straight-through pre-activation zone, a transition reaction zone and a main reaction zone; rectifying and separating the diisobutyl phosphorus; the preparation method comprises the following steps: adding diisobutyl phosphorus and a sodium hydroxide solution into a sulfur source solution under the conditions of pressurization and heating, carrying out nucleophilic substitution reaction, and carrying out heat preservation reaction to obtain the sodium diisobutyl dithiophosphinate. The free radical addition reaction is carried out in the microreactor, and step-by-step operation initiated by photo-thermal synergy is adopted, so that the yield of the target product diisobutyl phosphorus of the reaction is effectively improved, the generation of by-products is inhibited, and the blockage of the microreactor is avoided.

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 invention relates to a blue boiling-resistant flame-retardant nylon composite material and a preparation method thereof.The nylon composite material is prepared from, by weight, 61-72 parts of nylon resin, 20-25 parts of flame retardant, 5-10 parts of filling mineral, 0.3 part of laser etching powder, 0.3-0.8 part of blue toner, 1-2 parts of dispersing agent and 1 part of processing aid; the flame retardant is a phosphinate halogen-free flame retardant; the filling mineral is kaolin with a lamellar structure; the dispersing agent is a mixture of zinc stearate and N, N-ethylene bis stearamide; the preparation method comprises the following steps: uniformly mixing the components according to the weight ratio, and adding the mixture into a double-screw extruder for extrusion molding to obtain the blue boiling-resistant flame-retardant nylon composite material. The preparation method is simple in process; the prepared nylon composite material has the color difference E of less than 1 before and after water boiling, the flame retardant grade of 1.6 mm V0 and excellent laser marking performance.

A radiation curable ink jet composition includes polymerizable compounds and a photopolymerization initiator, the polymerizable compounds include a monofunctional monomer, a content of the monofunctional monomer with respect to a total mass of the polymerizable compounds is 90 percent by mass or more, and the photopolymerization initiator includes ethyl (2,4,6-trimethylbenzoyl)phenylphosphinate.

The invention relates to an organic phosphorous compound flame retardant, their preparation methods and applications. The organic phosphorous compound flame retardants are prepared by drop-wise adding at least one from the soluble salts of di-alkyl hypophosphorous acid or soluble salts of mono-alkyl hypophosphorous acid as well as at least one from the soluble salts of alkyl phosphorous acid or soluble salts of phosphorous acid into the solution of soluble non-halogen salt of II-IV valent metal to react, or drop-wise adding at least one from the di-alkyl hypophosphorous acid or mono-alkyl hypophosphorous acid, and at least one from the alkyl phosphorous acid or phosphorous acid into at least one from the active oxides or hydroxides of II-IV valent metal to react.

Provided is an alkyl phosphinate composition, comprising: 99.5-99.9999 wt% of an alkyl phosphinate; and 0.0001-0.5 wt% of a long-chain phosphate. The particle size D95 of the alkyl phosphinate composition is less than 20 microns; the number of carbon atoms in the long-chain phosphate is 16-24. The composition of alkyl phosphinate powder can avoid agglomeration of ultra-fine powder flame retardant during use and improve the dispersion effect of ultra-fine alkyl phosphinate powder in epoxy resins and polyurethane, thereby avoiding granular white spots when used in materials such as printed circuit boards and films; moreover, the composition can meet processing and use requirements for alkyl phosphinate flame retardants, and does not reduce the flame retardant efficiency of alkyl phosphinate flame retardants. Also provided are a preparation method for and a use of the alkyl phosphinate composition.

Flame-retardant polyamide moulding composition, in particular for railway applications, comprising, preferably consisting of: A 34 to 88% by weight of a semi-crystalline aliphatic polyamide having a C / N ratio of at least 8; b 6 to 21% by weight of a flame retardant consisting of: B1 50 to 100% by weight of at least one metal phosphinate; b2 0 to 50 wt% of at least one flame retardant synergist and / or at least one flame retardant containing nitrogen and phosphorus; wherein the sum of components B1 and B2 constitutes 100% by weight of component B; c 1 to 10 wt% of graphite; d 0 to 25 wt% of a polyamide elastomer; e 0 to 10 wt% of a plasticizer; f 0 to 10% by weight of a polyolefin; g 0 to 5% by weight of an additive different from A to F; wherein the sum of the weight proportions of components D to F is 5 to 30 wt% with respect to the sum of the weight percentages of components A to G, and wherein the sum of the weight proportions of components A to G is 100 wt%.

This invention discloses a high-fluorescence quantum yield all-inorganic perovskite thin film, its preparation method, and its applications, belonging to the field of lead-free perovskite optoelectronic device technology. The thin film preparation method includes the following steps: dissolving tin dibromide and cesium bromide in an organic solvent to obtain a precursor solution; adding N-(diphenylphosphino)-P,P-diphenylphosphineamide; coating the obtained perovskite precursor solution onto a substrate; and then annealing to obtain a high-fluorescence quantum yield all-inorganic perovskite thin film, which is a CsSnBr3 perovskite thin film. The CsSnBr3 perovskite thin film prepared using the method of this invention exhibits a high fluorescence quantum yield and improved film coverage. The high-fluorescence quantum yield CsSnBr3 perovskite thin film prepared by this invention can be applied to perovskite light-emitting devices, perovskite solar cells, perovskite photodetectors, and other fields.

The invention provides organic aluminum phosphonate and a preparation method and application thereof.The organic aluminum phosphonate has the structure shown in the formula I. The organic aluminum phosphonate is amino trialkyl aluminum phosphonate, molecules of the organic aluminum phosphonate contain a specific content of crystal water and a specific crystal structure, and the organic aluminum phosphonate has excellent flame retardance and stability and can cooperate with dialkyl phosphinate to achieve the flame retardant effect; according to the present invention, the flame retardant is added, such that the polymer composition containing the flame retardant has advantages of excellent flame retardant property, excellent high temperature resistance, excellent high humidity resistance, no auxiliary agent precipitation problem in severe environments such as high temperature, high humidity and the like, excellent color value and excellent light transmittance, good processability, and high injection molding part qualification rate.

The application discloses a flame retardant composition, a resin composite material and application and a molded part thereof, and belongs to the technical field of flame retardants. The application combines dihydrocarbyl-substituted phosphinate, mono-hydrocarbyl-substituted phosphinate and mono-hydrocarbyl-substituted phosphonate according to specific amounts, controls the dihydrocarbyl-substituted phosphinate to contain a specific amount of dihydrocarbyl-substituted phosphinate with a tertiary carbon structure, so that the prepared flame retardant composition can improve the flame retardant performance of a material and reduce mold fouling in a processing process when being applied to a resin, and is suitable for preparing electronic and electrical products.

The present invention relates to the use of heterocyclic phosphinic compounds or compositions comprising the same for treating cancer and / or for a use for reducing or preventing the appearance of metastases in a human patient afflicted with a cancer, wherein the compound is administered with a daily dose from 1 mg / kg to 80 mg / kg.

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 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 present invention provides a kind of polymer additive and application thereof, and the polymer additive includes the following components in parts by mass: 30 90 parts of diethyl phosphinate, 0.01 3 parts of ethyl phosphonate, 5 67 parts of dialkyl phosphinate, 0.01 5.5 parts of alkyl phosphinate; the dialkyl phosphinate has a structure as shown in Formula I, and the alkyl phosphinate has a structure as shown in Formula II. The present invention can significantly improve the flame retardant effect by the design and compounding synergy of various phosphonates, so that the polymer additive has excellent and efficient flame retardancy. The polymer additive is used in polymer materials, and can make the polymer composition comprising it have excellent flame retardant properties when the addition amount is small, and has good toughness, high impact strength, and excellent mechanical properties and resistance to moisture and heat.

The invention relates to the field of cables, in particular to a high-temperature-resistant cable and a preparation method thereof. The preparation method of the high-temperature-resistant cable comprises the following steps: in a nitrogen atmosphere, dispersing montmorillonite, polyvinylpyrrolidone and trimethylsiloxy-2-furan in tetrahydrofuran, then adding boric acid diglyceride and triethylamine, carrying out a pre-reaction, then adding maleimide, and carrying out a reaction to obtain an intermediate product; adding diphenyl phosphinyl chloride and a catalyst into the intermediate product, carrying out a reaction, then adding 2-(4-aminophenyl)-5-aminobenzoxazole, and carrying out a second reaction to obtain a high-temperature-resistant filler; and mixing the crosslinked polyethylene, the high-temperature-resistant filler, the antioxidant, the flexibilizer and calcium carbonate, banburying and extruding to obtain the high-temperature-resistant cable. The high-temperature-resistant cable provided by the invention has excellent thermal oxidation stability, and the service life of the material in a high-temperature environment is remarkably prolonged.

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.

This application discloses a thermoplastic resin composition, its preparation method, and the resulting product, belonging to the field of polymer materials technology. This application simultaneously adds specific amounts of brominated polystyrene, dialkyl-substituted phosphinates, and monoalkyl-substituted phosphinates of specific weight-average molecular weights to a matrix resin including at least one of ABS, SAN, and HIPS. By utilizing their synergistic effect, the resulting thermoplastic resin composition exhibits good flame retardancy, strong resistance to heat distortion, and is less prone to tiger-skin patterns during injection molding, making it suitable for manufacturing electronic and electrical products.

The application belongs to the technical field of composite materials, and particularly relates to an environment-friendly flame-retardant composite material for pipes and a preparation method thereof. The composite material comprises the following components in parts by weight: 80-100 parts of aliphatic polyamide, 10-15 parts of toughening agent, 20-30 parts of inorganic fiber filler, 8-14 parts of alkyl phosphinic acid salt, 6-10 parts of attapulgite, 2-4 parts of brominated polystyrene, 1-3 parts of coupling agent, 1-3 parts of lubricant, and 1-3 parts of antioxidant. The aliphatic polyamide is used as a base resin, and the alkyl phosphinic acid salt, the attapulgite and the brominated polystyrene are ternary compounded, so that multiple targets of improving flame-retardant efficiency, maintaining mechanical properties and improving processing stability are achieved. Technical defects such as large single flame-retardant additive amount, limited flame-retardant effect and easy precipitation of the alkyl phosphinic acid salt are effectively overcome, so that the composite material achieves a more optimal comprehensive balance in flame retardancy, mechanical strength and use reliability.

The invention discloses a phosphorus-containing hybrid metal salt compound and a preparation method and application thereof, the phosphorus-containing hybrid metal salt compound and dialkyl phosphinate have good flame-retardant synergy, the flame-retardant efficiency can be improved, and meanwhile, the corrosivity of a dialkyl phosphinate flame retardant can be reduced.

The present invention provides an alkenyl group-containing polyoxyalkylene compound represented by formula (1): R1O-(AO) n-R2 (In formula (1), AO is a C2-4 oxyalkylene group obtained by a dehydration condensation reaction using a phosphinic acid or a phosphinic acid salt; n represents the average addition mole number of AO, and n = 3-90; r1 is alkenyl with the carbon atom number of 3-5, and R2 is alkenyl with the carbon atom number of 3-5 or a hydrogen atom; the ratio (Mw / Mn) of the weight-average molecular weight (Mw) to the number-average molecular weight (Mn) of the alkenyl group-containing polyoxyalkylene compound calculated from a chromatogram obtained by gel permeation chromatography measurement is 1.20-5.00. ).

The invention relates to a preparation method of a high-strength flame-retardant nylon 6 material based on organic aluminum zinc phosphinate compounding, and belongs to the technical field of flame-retardant nylon. The nylon 6 comprises the following components in percentage by weight: 85%-90% of nylon 6, 2%-5% of organic aluminum phosphinate, 8%-12% of alkyl zinc phosphinate, 0.1%-0.3% of an antioxidant and 0.1%-0.3% of an anti-dripping agent. The flame-retardant nylon 6 material is prepared by pretreating organic aluminum phosphinate and organic zinc phosphinate and blending with nylon 6. The flame retardance of the flame-retardant nylon 6 material is ensured, and meanwhile, the defects that the mechanical strength of a base material is degraded by an organic aluminum phosphinate flame retardant, the smoke release amount is high and the like are effectively overcome. The technical problems in the prior art are solved, and the application range of the flame-retardant nylon 6 material is widened.

The application relates to the cable technical field and discloses a flame-retardant cable and a preparation method thereof. The flame-retardant cable comprises, from inside to outside, a conductor, an insulation layer and a sheath layer. The raw material of the sheath layer comprises the following components in parts by weight: 100 parts of polyethylene, 10-15 parts of ethylene-vinyl acetate copolymer, 5-8 parts of ethylene-ethyl acrylate copolymer, 9-15 parts of a filler, 35-45 parts of inorganic hydroxide and 6-12 parts of a carboxyl-containing compound. The carboxyl-containing compound comprises tri(2-carboxyethyl) isocyanurate and 2-carboxyethyl phenyl phosphinic acid in a weight ratio of 1:9-9:1. The carboxyl-containing compound of tri(2-carboxyethyl) isocyanurate and 2-carboxyethyl phenyl phosphinic acid and the inorganic hydroxide are used together in the cable sheath layer, so that the problem that the flame retardance is limited due to poor dispersibility of the inorganic hydroxide in the existing cable sheath layer in the related art is solved.

The invention relates to the technical field of high polymer materials, and discloses high-temperature-resistant nitrogen-based flame-retardant nylon as well as a preparation method and application of the high-temperature-resistant nitrogen-based flame-retardant nylon, and the flame-retardant nylon is prepared from the following components in parts by weight: 75-90 parts of high-temperature-resistant polyamide; 5 to 18 parts of diethyl phosphinic acid-melamine salt; 2.5 to 12 parts of bis (cyano guanidine) hexamethylenediamine; 0.5 to 4 parts of phenyl-N '-(diethyl phosphinyl) urea; 0-40 parts of glass fiber; the high-temperature-resistant polyamide comprises unmodified high-temperature-resistant polyamide and pre-activated polyamide master batches, and the pre-activated polyamide master batches are prepared by reaction of the high-temperature-resistant polyamide and a 3-aminopropyl (diethoxy) methylsilane-g-dicyandiamide adduct. According to the invention, through in-situ reaction of the specific reactive flame-retardant precursor and chemical bonding of the specific reactive flame-retardant precursor and the pre-activated polyamide matrix, the obtained composition keeps high-level mechanical properties while obtaining excellent processing stability.