9 results about "Diphenyl phosphite" patented technology

The invention belongs to the technical field of reinforcement and repair of paper archives, and relates to a paper pink pencil handwriting display reinforcing agent and a preparation method and application thereof, the paper pink pencil handwriting display reinforcing agent is formed by ethyl cellulose, an organic solvent, diphenyl-isooctyl phosphite and bis (1, 2, 2, 6, 6-pentamethyl-4-piperidyl) sebacate; the volume ratio of the organic solvent to the diphenyl-isooctyl phosphite to the bis (1, 2, 2, 6, 6-pentamethyl-4-piperidyl) sebacate is (14 to 16): (2 to 3): 1; 3 g of ethyl cellulose is added into every 100 mL of the organic solvent; the organic solvent is formed by mixing ethyl acetate, acetone and n-butyl alcohol which are equal in volume. The display reinforcing agent disclosed by the invention has excellent anti-hydrophilic property, and the pink pencil writing is not easy to fall off; the blue printing paper also has the effect of inhibiting light scattering, so that the handwriting developing definition is improved, the blue printing paper is not easy to age and fade, and long-term storage of the blue printing paper is realized.

The invention discloses an imidazolyl lipid assembly as well as a preparation method and application thereof, and relates to the technical field of biomedical materials. The preparation method comprises the following steps: mixing diphenyl phosphate, alcohol and pyridine, and heating for reaction to obtain alkyl phosphate; mixing N, N-diethylethylenediamine, 5-imidazole formaldehyde and a solvent, carrying out a heating reaction in a protective atmosphere, then adding the alkyl phosphate, and continuing the heating reaction to obtain an imidazolyl lipid molecule; dissolving the imidazolyl lipid molecules in an organic solvent to obtain a mother solution; the imidazolyl lipid assembly is obtained from the mother liquor through a film hydration method. The imidazole-based lipid assembly constructed by the invention can utilize the imidazole group to destroy the normal structure of bacteria under the condition of no antibiotic load, and utilizes the catalytic action of the imidazole group to complete the destroy of a biological membrane matrix and an inflammation activation medium, so that the synergism of antibiosis and anti-inflammation is realized, and the imidazole-based lipid assembly has the effect of buffering local acidic pH.

In order to improve the high-temperature durability and safety of the lithium manganese iron phosphate battery, the invention provides the lithium manganese iron phosphate battery electrolyte and the lithium manganese iron phosphate battery, the electrolyte comprises an organic solvent, a lithium salt and an additive, and the additive comprises N, N-dimethyl sulfonamide and diphenyl phosphate. N, N-dimethyl sulfonamide and diphenyl phosphite are added into the electrolyte, and the N, N-dimethyl sulfonamide and diphenyl phosphite cooperate to inhibit dissolution of manganese ions in the lithium manganese iron phosphate battery, relieve swelling of the battery at high temperature, improve the high-temperature capacity retention ratio of the battery and prolong the high-temperature cycle life of the battery, so that the market competitiveness of the lithium manganese iron phosphate battery is improved; and a more reliable and efficient energy solution is provided for electric automobiles, energy storage systems and consumer electronics.

This invention belongs to the field of inorganic nanoparticle technology, and discloses a silicon-phosphorus-containing inorganic nanoparticle, its preparation method, and its application. The silicon-phosphorus-containing inorganic nanoparticle is prepared from inorganic nanoparticles, a phosphorus-containing compound, and a silane coupling agent. The inorganic nanoparticles are selected from at least one of nano-ZrO2, nano-CaCO3, nano-SiO2, and nano-TiO2. The phosphorus-containing compound is selected from at least one of dimethyl phosphite, diethyl phosphite, and diphenyl phosphite. The silane coupling agent is selected from γ-glycidoxypropyltrimethoxysilane and / or γ-glycidoxypropyltriethoxysilane. The silicon-phosphorus-containing inorganic nanoparticles of this invention, due to surface modification, have significant steric hindrance, are not prone to aggregation, and can be well dispersed in a matrix. The inorganic nanoparticles contain silicon and phosphorus, and have a certain flame-retardant effect.

The present invention discloses a phosphorus-nitrogen synergistic structural flame-retardant PET and a preparation method thereof. In the present invention, melamine is combined with diphenyl phosphite via an Atherton-Todd reaction to prepare melamine diphenyl phosphite, which is then further polymerized with terephthalic acid and ethylene glycol prepolymer to prepare a structural flame-retardant PET. The phosphorus-nitrogen synergistic structural flame-retardant PET prepared by the present invention introduces phosphorus and nitrogen flame-retardant elements into the PET molecular chain via chemical bonds, resulting in good thermal stability and processing properties. Furthermore, phenyl phosphite has good antioxidant and chain-extending effects on PET, acting as an esterification accelerator to extend the PET molecular chain and generate a cross-linked structure, thereby improving its mechanical properties such as tensile strength and impact strength.

The invention relates to the field of medicinal chemistry, in particular to a preparation method of a triazolopyridine compound, which comprises the following steps: reacting a compound 6 with aniline and diphenyl phosphite in the presence of isopropanol to obtain a compound 7; and reacting the compound 5 with the compound 7 to obtain the compound as shown in the formula I. The method avoids use and production of heavy metal substances, and is environment-friendly, simple, efficient, mild in reaction condition, easy to control in operation, safe, reliable, low in cost, good in economic benefit and suitable for industrial production.

The invention discloses a preparation method and application of a magnesium hydroxide / phosphorus hybrid flame retardant, and belongs to the technical field of environment-friendly flame retardant preparation and polymer composite materials. According to the technical scheme, the preparation method comprises the following steps: sequentially adding magnesium hydroxide, diphenyl phosphite, a hydrogen peroxide solution and an environment-friendly reaction medium into a hydrothermal reaction kettle, ultrasonically mixing uniformly, transferring into a drying oven for heating reaction, cooling, filtering and drying to obtain the magnesium hydroxide hybrid flame retardant. The preparation method of the magnesium hydroxide / phosphorus hybrid flame retardant provided by the invention is simple in process and low in cost, a target product can be prepared through one-pot heating, a reaction medium is green and environment-friendly, and the preparation method is suitable for mass production. Compared with a pure magnesium hydroxide flame retardant, the magnesium hydroxide / phosphorus hybrid flame retardant prepared by the preparation method disclosed by the invention shows an excellent flame retardant effect under a low filling amount, and meanwhile, the flame-retardant modified ethylene-butyl acrylate copolymer (EBA) cable material has good mechanical properties.

The invention discloses a cyanine fluorescent compound as well as a preparation method and application thereof, and belongs to the technical field of fine chemical engineering. The structure of the cyanine fluorescent compound is shown as a formula (I), and the cyanine fluorescent compound can be used for detecting ONOO. The luminescent mechanism of the cyanine fluorescent compound is an intramolecular charge transfer (ICT) mechanism, the emission wavelength is 800nm, the cyanine fluorescent compound is connected with a diphenyl hypophosphite group, in the presence of peroxynitrite ONOO, the diphenyl hypophosphite group leaves through a high-selectivity addition-elimination way, the ICT effect is changed, the emission wavelength is blue-shifted to 633nm, and the cyanine fluorescent compound has the advantages that the fluorescence intensity of the cyanine fluorescent compound is improved; ratio-type fluorescence detection of ONOO is realized, and the detection limit reaches 0.57 mu M. (I)

The invention relates to the technical field of automobile films, and discloses a PVC automobile film and a preparation method thereof. The preparation method comprises the following steps: stirring and mixing PVC resin, flame-retardant polyurethane, a silane borate flame retardant, tributyl citrate, diphenyl phosphite, zinc stearate, nano calcium carbonate and nano titanium dioxide, and carrying out melt extrusion molding to obtain the PVC automobile film. Nitrogen elements in triazinyl and pyridyl release non-combustible gas after being heated and decomposed, so that the concentration of combustible gas is diluted, and a flame-retardant effect is achieved; the phosphorus element is decomposed at high temperature to generate oxide of phosphorus, the oxide of phosphorus enters a flame area to capture a key active intermediate of a combustion chain reaction, and the combustion chain reaction is interrupted, so that a flame-retardant effect is achieved; silane groups are subjected to a decomposition-condensation-ceramization process at high temperature to form a silicon dioxide or silica ceramic layer, so that the flame retardant property is improved; boric acid ester is decomposed at high temperature to generate boric acid, the boric acid is further dehydrated and converted into a glassy state boron oxide coating, heat and oxygen transfer is blocked, and the flame-retardant effect is enhanced.