49 results about "Phosphite ester" patented technology

The invention discloses a rare-earth metal arylamine group compound as well as preparation method and application thereof. The invention discloses the rare-earth metal arylamine group compound which is characterized in that a general formula of the rare-earth metal arylamine group compound is (2,6-R12PhNH)5LnLi2(THF)2, wherein Ln is a rear-earth metal selected from one of neodymium, samarium, ytterbium or yttrium; R1 is selected from one of hydrogen, methyl or isopropyl. The rare-earth metal arylamine group compound has the advantages that the rare-earth metal arylamine group compound has a definite structure; raw materials used in the preparation method are simple, easily obtained and cheap; the reaction process is simple and easily operated; the rare-earth metal arylamine group compound product is conveniently purified and the yield of the product is high; the rare-earth metal arylamine group compound has a high activity when acting as a single component catalyst to catalyze a hydrogen phosphine reaction of aldehyde or ketone and phosphite ester; the use amount of the catalyst is less; the yield is high; a substrate has wide universality; a new and simple method is provided for synthesis of a-hydroxyphosphonate.

The application discloses a high-elongation-strength anti-fatigue TPU blended material and a preparation method thereof, and relates to the field of polymer materials. In the preparation of the high-elongation-strength anti-fatigue TPU blended material, phosphorus chloride is reacted with 4'-vinyl-[1,1'-biphenyl]-4-alcohol and p-phenylphenol to obtain a phosphite antioxidant; nano-silicon dioxide is sequentially reacted with trimethoxysilane and the phosphite antioxidant to obtain modified silicon dioxide; a modified polyurethane elastomer is prepared by reacting hydroxyl-terminated polysiloxane, 1,4-butanediol, isophorone diisocyanate and adipic dihydrazide; polyether amide elastomer and the modified polyurethane elastomer are mixed, mixed with a compatilizer, modified silicon dioxide and antioxidant 1010, dried, mechanically mixed, and melt-blended to obtain the high-elongation-strength anti-fatigue TPU blended material. The high-elongation-strength anti-fatigue TPU blended material prepared by the application has the abilities of self-repairing, durability and flame resistance.

Provided is a polyamide resin composition including: 38 wt % to 82 wt % of polyamide 6; 1 wt % to 30 wt % of a long chain polyamide; 15 wt % to 35 wt % of an impact modifier including a polyolefin-based rubber; 0.1 wt % to 1.0 wt % of an antioxidant including a phenol-based antioxidant, an amine-based antioxidant, a phosphite-based antioxidant, or a mixture thereof; and 0.1 wt % to 1.0 wt % of a release agent including ethylene bis stearamide.

This invention discloses a high-temperature resistant water-based ink and its preparation method, belonging to the field of ink technology. The high-temperature resistant water-based ink, by weight, comprises the following components: 45-50 parts of silicone-modified water-based polyurethane resin, 25-30 parts of epoxy-modified acrylic emulsion, 10-15 parts of composite filler, 1-2 parts of pigment, 1-3 parts of water-based polytetrafluoroethylene wax powder, 0.5-1.5 parts of dispersant, 1-2 parts of leveling agent, 0.6-1 part of defoamer, 0.4-0.6 parts of tris(2,4-di-tert-butylphenyl) phosphite, 15-20 parts of water, and 20-25 parts of dipropylene glycol methyl ether. This invention also proposes a method for preparing the above-mentioned high-temperature resistant water-based ink. The high-temperature resistant ink proposed in this invention exhibits excellent high-temperature resistance and flexibility.

The present invention relates to a biodegradable composition having low casting precipitation, and a preparation method therefor and the use thereof. The biodegradable composition having low casting precipitation comprises the following components in parts by weight: 69-91 parts of polylactic acid, 0-16 parts of a flexible biodegradable polyester, 0-11 parts of a filler, 0.1-3.1 parts of an anti-precipitation agent, and 0.1-3.1 parts of a phosphite antioxidant. In the present invention, the anti-precipitation agent and phosphite antioxidant are added to the biodegradable composition comprising polylactic acid as a main component, thereby effectively improving the casting precipitation problem of the biodegradable composition.

This invention relates to the field of chemical technology and discloses a method for purifying organic phosphites. The method comprises: mixing the organic phosphite to be purified with organic solvent II and organic solvent III, followed by solid-liquid separation. The organic phosphite exhibits a higher solubility in organic solvent II at 25°C than in organic solvent III by 10-50 g / 100 mL. Using this method, the content of impurities such as phosphorous acid and chlorine in the organic phosphite molecule can be reduced to below 20 ppm, and the purity can be increased to over 99% (HPLC determination), meeting the requirements for industrial applications.

This invention relates to the field of chemical technology and discloses a method for reducing the chlorine content in organic phosphite samples. The method includes: mixing the organic phosphite to be purified with a washing solution in the presence of a protective gas, and then performing solid-liquid separation on the mixture. The washing solution contains water and an organic solvent, and the solubility of the organic phosphite in the organic solvent at 25°C is less than 1 g / 100 ml. The volume ratio of water to organic solvent in the washing solution is 1:0.1-3. Using this method, the chlorine content in organic phosphite samples can be reduced to below 20 ppm, meeting the requirements for industrial applications.

Improvement of polyethylene multilayer films. [Solution] A single-layer or multi-layer polyethylene film used as packaging or protective material for electronic devices and / or electronic components, having at least one surface layer (A) and optionally an intermediate layer (B) sandwiched between two A layers. The surface layer (A) comprises a resin mainly composed of high-density polyethylene (A1) polymerized in the presence of a metallocene catalyst, and an antioxidant (a1), a conductive agent (a2), and a dispersant (a3) ​​having a phosphite ester structure and a hindered phenol structure within the same molecule. The intermediate layer (B) comprises high-density polyethylene (B1).

This invention relates to the field of nano-calcium carbonate preparation technology, and discloses a high-weather-resistant nano-calcium carbonate for MS adhesive and its applications. This invention constructs a Ti-Ta binary co-precipitated inorganic shell, which can effectively block ultraviolet radiation and inhibit the generation of photo-induced free radicals in nano-calcium carbonate. Combined with the hydrophobic, antifouling, and free radical quenching effects of the perfluoropolyether-thioether-based phosphite organic graft layer, a dual weather-resistant mechanism of "physical shielding + chemical stability" is formed. Furthermore, the perfluoropolyether segments of this invention are highly matched with the polyether backbone structure of the MS adhesive, which can significantly improve the interfacial bonding between the filler and the adhesive, reducing interfacial defects. The thioether-based phosphite, through strong coordination anchoring with calcium carbonate via carboxyl groups, avoids the problems of easy precipitation and interfacial debonding of traditional fatty acid modifiers, greatly improving the mechanical properties and long-term storage stability of the MS adhesive. The overall process parameters of this invention are clear and controllable, enabling large-scale production, and combining excellent performance with cost advantages.

The present application relates to the technical field of ink preparation, and discloses a high-temperature-resistant and discoloration-resistant polyarylene ether nitrile modified ink and a preparation method thereof, the ink comprising a film-forming resin system, the film-forming resin system comprising polyarylene ether nitrile resin, epoxy resin and auxiliary resin; high-temperature-resistant inorganic pigment; antioxidant synergistic system; surface-modified nano inorganic barrier material; hydrolysable silane coupling type organic-inorganic hybrid precursor; curing agent; dispersant and rheological additive; wherein the antioxidant synergistic system comprises hindered phenolic antioxidant and phosphite auxiliary antioxidant; and the surface-modified nano inorganic barrier material is nano SiO2 modified by a silane coupling agent. The present application uses polyarylene ether nitrile as the main resin, optimizes the adhesion by epoxy modification, matches high-temperature-resistant inorganic pigment and anti-yellowing auxiliary agent, and controls moisture, dispersion uniformity and curing parameters throughout the process, so that the high-temperature-resistant and discoloration-resistant ink for automobile engine compartments can be successfully prepared.

The present invention provides a continuous crystallization method of tris(2,4-di-tert-butylphenyl) phosphite. The method comprises: a) a melting pretreatment step, b) a crystallization step and c) a washing and drying step. The method of the present invention allows a significant reduction of solvent residual amount: at the same time increasing product purity and production efficiency, and reducing production energy consumption.

The application discloses an insulating anti-ultraviolet EPDM rubber composite material and a preparation method and application thereof. The material comprises the following preparation raw materials in parts by weight: 100 parts of EPDM rubber, 10-30 parts of titanium white powder, 30-80 parts of nano insulating filler, 2-5 parts of vulcanizing agent, 1-4 parts of vulcanization accelerator, 0.5-2 parts of antioxidant, 2-5 parts of nano cerium oxide, 0.5-2.5 parts of ultraviolet absorber, and 0.5-2 parts of light stabilizer. The antioxidant comprises a hindered phenol type antioxidant and a phosphite antioxidant. The ultraviolet absorber is a benzotriazole ultraviolet absorber. The vulcanization accelerator comprises triallyl isocyanurate and sulfur. The material has excellent mechanical properties and electrical insulation properties, and can still maintain high stability of mechanical properties and electrical properties under the conditions of thermal oxygen aging and ultraviolet aging. The material is particularly suitable for the field of outdoor cable accessories such as cable joints and terminals which have high reliability requirements.

The present invention relates to a polyethylene composition comprising a polyethylene, preferably ≥95.0 wt % of polyethylene, and further (a) ≥100 and ≤500 ppm of a phenolic antioxidant; (b) ≥500 and ≤2500 ppm of an organic phosphite stabiliser; and (c) ≥500 and ≤2500 ppm of a metal stearate with regard to the total weight of the polyethylene composition. Such polyethylene composition, when used in a moulding process with PCR polyethylene, results in a reduction of the quantity of degradation products formed, which may be observed as a reduction of die deposits.

Methods and compositions for processing polymers with fluorine-free polymer processing aids (PPAs) are described. The methods can include extruding a polymer composition, optionally with a masterbatch, wherein the polymer composition and / or the masterbatch comprises a fluorine-free PPA to make a polymeric film. The PPA comprises a mixture of one or more polyamides and one or more polyphosphites.

The application discloses a kind of PP / PBAT composite material and preparation method thereof, it is related to composite material field, raw material includes the following components according to mass fraction: polypropylene: 55~75 parts;Polybutylene adipate terephthalate: 25~45 parts;Maleic anhydride grafted polypropylene: 2~5 parts;Epoxy functional compatibilizer and / or epoxy functional chain extension agent: 0.2~1.5 parts;Antioxidant stabilizing system: 0.2~0.8 parts;The antioxidant stabilizing system at least includes hindered phenol antioxidant and phosphite antioxidant.The application can improve the compatibility of polypropylene and polybutylene adipate terephthalate, enhance interface bonding force while also improve the toughness and processing stability of composite material.

The application discloses a kind of multi-element composite weather-resistant degradable mulch and preparation method thereof, belong to degradable mulch processing technical field, first by alkali reaming-acetylation preparation modified straw fiber, then by silane liquid phase modification to obtain composite micro-fiber framework, realize superfine powder embedding fiber pore by liquid phase impregnation to obtain composite micro-fiber powder, finally, PLA, PBS, PBAT, PBST polyester and composite micro-fiber powder are compounded light stabilizer, phenolic and phosphite antioxidant, dicumyl peroxide and compatibilizer, and then extrusion granulation, film blowing forming to obtain degradable mulch;The application relies on quaternary resin compounding, straw acetyl modification and inorganic micro-fiber silane modification triple synergistic system, solves the defects of traditional PLA / PBAT binary mulch rigid-flexible imbalance, high-temperature loss of additive is fast, long-acting weathering is insufficient, and excellent processing fluidity, field conservation performance and biological degradation rate are considered, suitable for full-cycle mulch cultivation of field crops.

Suitable thermoplastic compositions for use in rotational molding applications include a) a polyethylene composition having a melt index I2 of 0.5 to 10 g / 10 min and a melt flow rate of 0.930 to 0.965 g / cm³. 3 The density of; and b) the additive package. The additive package contains i) a first hindered phenolic antioxidant compound selected from d,l-α-tocopherol, d,l-β-tocopherol, d,l-γ-tocopherol, d,l-δ-tocopherol, propyl gallate (3,4,5-trihydroxybenzoate), and mixtures thereof; and ii) a first phosphite antioxidant compound having formula I: (I) wherein R 1 R 2 R 4 and R 5 Independently selected from hydrogen atoms and C1-C 12 Alkyl; R 3 Selected from hydrogen atoms and C1-C8 alkyl groups; L represents a single bond or has the formula -CHR 6 - alkylene groups, wherein R 6 It is a hydrogen atom or C1-C 12 Alkyl group; A is an alkyl group having the formula -CHR 7 - Alkylene, having the formula -C*(=O)CHR 7 - carbonyl group, where C * Bonded to O in formula I, or having a carbonyl group of formula -(C=O)-, wherein R 7 It is a hydrogen atom or C1-C 12 Alkyl; wherein one of Y and Z is selected from hydroxyl, alkoxy, aryloxy, alkylaryloxy, and arylalkoxy, and the other of Y and Z is selected from hydrogen and C1-C. 12 alkyl.

Provided in the present application are a polymer, a preparation method therefor, a positive electrode sheet, a secondary battery, and an electrical device. The polymer includes a structure as represented by Formula I. X includes a phosphate group or a phosphite group, R1 and R3 each independently include at least one of a polyether segment, a polyester segment, hydrogen and a hydrocarbon group. At least one of R1 and R3 includes a polyether segment or a polyester segment. R2 includes an organic segment. The polymer provided in the present application can effectively improve the maximum solid content of a positive electrode slurry, shorten the filtering time, improve the production efficiency and quality of the electrode sheet, and also improve the flexibility of the electrode sheet.

The present invention aims to provide an electromagnetic wave-absorbing composition comprising a thermoplastic resin or a thermoplastic elastomer, exhibiting electromagnetic wave absorption performance, and suppressing an increase in fluidity when heated. The composition of the present invention comprises a component (A) that is at least one selected from a thermoplastic resin and a thermoplastic elastomer and a component (B) that is a Fe—Cr—Si-based soft-magnetic metal powder at a mass ratio (component (A) / component (B)) in a range of 5 / 95 to 80 / 20, further comprises a component (C) that is at least one selected from a phosphite-based compound and a phosphate-based compound in an amount of 0.02 to 1.4 parts by mass relative to 100 parts by mass in total of the component (A) and the component (B), and has an electromagnetic wave absorption energy P at 79 GHz of 5 kW / m3 or more.

The application provides an anti-high-temperature and anti-pollution organic salt well completion fluid and a preparation method thereof, and raw materials of the well completion fluid include, in terms of weight parts, 100 parts of water, 25-30 parts of potassium formate, 100-130 parts of potassium pyrophosphate, 0.3-0.7 parts of a high-temperature tackifying and filtrate-reducing agent, 1-3 parts of a high-temperature filtrate-reducing agent, 2-5 parts of a manganese powder plugging agent, 0.5-1.5 parts of triphosphite, 0.1-0.3 parts of tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester, 1-2 parts of polyethylene oxide-polypropylene oxide copolymer, 1-3 parts of nano silicon dioxide, 0.5-1.5 parts of sodium carboxymethyl cellulose and 0.3-0.8 parts of polyacrylamide. The anti-high-temperature and anti-pollution organic salt well completion fluid system has good plugging property, can reduce formation filtration and effectively protects a reservoir.

This invention provides a stabilizer composition, a special material for polyethylene wires and cables, a method for preparing the same, and polyethylene wires and cables. The stabilizer composition provided by this invention comprises the following components in parts by weight: hindered phenolic stabilizers AO-1 and / or AO-2 0.10–0.15 parts; amine antioxidant AN-1 0.05–0.10 parts; thioester stabilizers DLTDP and / or 412S 0.03–0.10 parts; and phosphite antioxidant PS-1 0.02–0.05 parts; wherein the structures of the hindered phenolic stabilizers AO-1, ​​AO-2, amine antioxidant AN-1, and phosphite antioxidant PS-1 are shown below. This invention combines the above components in a certain proportion, allowing them to interact and effectively improve the antioxidant properties and stability of the product.

This invention relates to the field of chemical technology and discloses a method for preparing phosphites. The method includes: (1) contacting 2,2'-biphenyl with phosphorus trichloride in the presence of a protective gas and an auxiliary agent to carry out a first coupling reaction; (2) adding bisphenol 2,2'-dihydroxy-4,4',6,6'-tetratert-butyl-1,1'-biphenyl to the reaction system obtained in step (1) to carry out a second coupling reaction; (3) mixing the phosphite sample to be purified obtained in step (2) with an extract, and then separating the mixture into solid and liquid components. The extract contains water and organic solvent A, the solubility of the phosphite molecule in the organic solvent at 25°C is less than 1 g / 100 mL, and the water content in the extract is at least 30% by volume. Using this method, the nitrogen content in the bisphosphite molecule can be reduced to below 1000 ppm, while the product purity is increased to above 99.4%, meeting the requirements for industrial applications.

The present application relates to fine chemical technology field, especially to IPC C08L27, more particularly to a PVC antioxidant and its preparation method and application. The PVC antioxidant in the present application comprises 15-30 parts of phosphite, 50-70 parts of mixed alcohol, 0.01-5 parts of catalyst. A novel PVC antioxidant is prepared in the present application, which has novel composition structure, and has better antioxidant property, high temperature resistance and color improvement. The preparation method in the present application is simple, the raw materials are non-toxic and harmless, and the application range is wide.

This invention relates to the technical field of polyolefin insulation materials for wires and cables, specifically to a flame-retardant and anti-aging ethylene-propylene copolymer composition and its preparation method. The composition uses ethylene-propylene copolymer as a matrix, introduces an organophosphorus flame retardant composed of aluminum phosphinate and melamine polyphosphate, which synergistically retards the flame with a magnesium-aluminum layered double hydroxide treated with organosilane / fatty acid salts. A multi-component anti-aging system containing hindered phenols and phosphites is employed, with some anti-aging components pre-adsorbed onto the surface of fumed silica nanofillers. Simultaneously, an ethylene-propylene graft compatibilizer containing maleic anhydride groups is added. The composition is formed through a two-step melt blending and granulation process using a flame-retardant masterbatch. This material meets flame-retardant requirements while exhibiting a high oxygen index and good drip suppression effect. It also demonstrates excellent retention of mechanical and electrical properties after thermal aging, making it suitable for cable sheaths and insulation layers in long-term service.

The application relates to the technical field of high polymer material modification, and discloses an anti-aging acetoacetylated polyvinyl butyral resin composition and a preparation method, which comprises 100 parts of acetoacetylated polyvinyl butyral resin, 12 to 28 parts of triethylene glycol diisooctylate, 0.15 to 4.5 parts of poly[[6-[(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidyl)imino]-1,6-hexanediyl[(2,2,6,6-tetramethyl-4-piperidyl)imino]] and 0.1 to 1.0 parts of tris(2,4-di-tert-butylphenyl)phosphite. The modified resin is prepared by using a double-screw extruder under a solvent-free condition, and then is transferred into a single-screw extruder to be melt-blended with plasticizers and additives, solvent recovery is avoided, uniform mixing is ensured, and the anti-aging effect is achieved.

The application discloses a kind of silane crosslinking polyethylene pipe with light oxygen aging resistance of double-layer structure and preparation method thereof, belong to silane crosslinking polyethylene pipe field.The silane crosslinking polyethylene pipe of the application is designed as double-layer structure, by optimizing the composition of outer layer, so as to achieve the purpose of light oxygen aging resistance, wherein, compound tetra [beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, tris (2,4-di-tert-butylphenyl) phosphite, thiodipropionic acid distearyl ester are used as main antioxidant, and auxiliary antioxidant is added as quercetin stearate, synergistic antioxidant effect is improved, antioxidant performance and thermal oxygen stability are improved, self-made ultraviolet absorber is also added, with large molecular weight, can be firmly anchored in polyethylene matrix, reduce migration and volatilization, and then play more excellent ultraviolet resistance effect, and main antioxidant, auxiliary antioxidant and light stabilizer synergistic effect, reach the effect of significant light oxygen aging resistance.

The application provides a combination catalyst and application thereof, and belongs to the technical field of fine chemical industry.The combination catalyst is composed of a phase transfer catalyst, an antioxidant and a buffer agent; the phase transfer catalyst is a crown ether phase transfer catalyst; the antioxidant is one or more of dilauryl thiodipropionate, dioctadecyl thiodipropionate, triphenyl phosphite and pentaerythritol diphosphite; and the buffer agent is one or more of potassium carbonate, sodium hydroxide and sodium bicarbonate.The combination catalyst has high activity, and when used in the reaction of synthesizing sodium thiocyanate and chloropropyl triethoxysilane, the combination catalyst has mild conditions, small dosage, easy control, simple operation, short reaction time, high yield, few by-products, reduced production cost, and improved product yield and quality.

This application provides a polymer, a method for preparing the same, a cathode sheet, a secondary battery, and an electrical device. The polymer comprises a structure represented by formula I, where X comprises a phosphate group or phosphite group, R1 and R3 each independently comprise at least one of a polyether segment, a polyester segment, hydrogen, or a hydrocarbon group, and at least one of R1 and R3 comprises a polyether segment or a polyester segment, and R2 comprises an organic segment. The polymer provided in this application can effectively increase the maximum solid content of the cathode slurry, shorten the filtration time, improve the production efficiency and quality of the electrode sheet, and improve the flexibility of the electrode sheet.

To provide a method for producing oligonucleotides that can suppress the formation of by-products. [Solution] A method for producing an oligonucleotide having a phosphate ester bond by oxidizing an oligonucleotide precursor having a phosphite ester bond or a phosphonic acid ester bond with an oxidizing agent, wherein the oxidizing agent is a compound represented by formula (I) (excluding 2,2-dipyridyl disulfide) (the definition of the symbols in the formula is as described in the specification). JPEG2026110729000086.jpg844

Disclosed is a furan polyester composition, the furan polyester composition being mainly composed of 2,5-furandicarboxylic acid structural units and aliphatic diol structural units, and the polyester composition containing germanium and phosphite antioxidants. The furan polyester composition exhibits a color tone, heat resistance, and crystallinity that are all good, and can be used to prepare fibers, films, engineering plastics, and the like.