12 results about "Organophosphonates" patented technology

The invention discloses a chloroethylene carbonate purification process in the technical field of synthesis of lithium battery additives. The process adopts a novel hierarchical pore asymmetric zirconium organic phosphonate frame material as an adsorbent. The method comprises the following steps: firstly, mixing, heating and stirring crude chloroethylene carbonate and absolute methanol, and standing at room temperature for pretreatment; performing selective adsorption on the pretreatment solution through an adsorption column filled with the adsorption material; carrying out toluene washing, citric acid ethanol solution treatment and supercritical carbon dioxide extraction on the saturated material to realize regeneration; and finally, rectifying the solution subjected to adsorption treatment under a reduced pressure condition to obtain a high-purity product. The adsorption material is prepared through multiple steps of reactions including synthesis and modification of an organic ligand, framework construction of a zirconium source and a phosphonic acid ligand, asymmetric functional modification of the surface of the material, and final thermal activation and hydrophobic stabilization treatment. The process is simple and efficient, the material can be reused, and the method is especially suitable for the field of lithium battery additive synthesis.

The invention discloses a perovskite passivator molecule based on machine learning prediction and application of the perovskite passivator molecule in a perovskite solar cell, and relates to the technical field of perovskite solar cells and artificial intelligence. The method comprises the following steps: mixing 1, 2-dibromoethane and 3, 6-dicyanocarbazole, reacting, filtering and purifying, and reacting with triethyl phosphonite to obtain the novel perovskite body phase doped material DCNP which is an organic phosphonate micromolecule with a carbazole structure; and when being added into a perovskite formula as a doping agent, the material effectively improves the charge transfer efficiency and reduces non-radiative recombination, and verifies the accuracy and practicability of a model. According to the method, the research and development cost is remarkably reduced, the research and development process of the perovskite material is accelerated, powerful support is provided for wide application of the perovskite technology in the fields of solar cells, light-emitting diodes and the like, and the method has important scientific significance and application value.

The invention discloses a method and a system for purifying ammonium sulfate. The method comprises the steps of raw material pretreatment, oxidation impurity removal, precipitation impurity removal, carbon material adsorption, crystallization drying and the like for synergic impurity removal. In the raw material pretreatment, insoluble impurities are removed by using a gradient dissolution method and organic filter membrane filtration; the oxidation impurity removal adopts hydrogen peroxide to oxidize low-valence metal ions under the conditions of specific temperature and pH; a composite precipitator composed of organic phosphonate and magnesium salt is used for precipitation and impurity removal; carbon material adsorption adopts activated carbon with a specific specific surface area to adsorb organic matters; and the crystallization and drying are performed by controlling the temperature to perform evaporation concentration, gradient cooling crystallization and drying. The system and the method can effectively solve the problems of incomplete impurity removal, high cost, complex process and environmental pollution in the existing ammonium sulfate purification technology, have the advantages of efficient impurity removal, economical efficiency optimization of the whole process and environmental friendliness, and realize synergistic removal of heavy metal ions, organic matters and colloidal particles.

The organic phosphonate flame retardant prepared by the invention is obtained by reacting dialkyl hypophosphorous acid or dialkyl hypophosphite with halogenated alkyl phosphine oxide in a solvent and then separating and purifying, the synthesis method is simple, the use of high-pollution and high-toxicity substances is avoided, the synthesis structure is clear, and the temperature resistance is not influenced by residues of reactive hydrogen on phosphorus. Meanwhile, the synthesized ester group-containing organic phosphonate flame retardant provides better flame retardant property under the condition of lower additive amount, and the resin has higher retention rate of mechanical property and electrical property due to the low additive amount.

The invention relates to the technical field of preparation of neutralizing corrosion inhibitors, in particular to a high-temperature-resistant and acid-resistant neutralizing corrosion inhibitor and a preparation method thereof, and aims to solve the technical problems that the corrosion inhibition efficiency of an existing corrosion inhibitor is remarkably reduced in a high-temperature and strong-acid environment, the heat stability is insufficient, and effective components in the corrosion inhibitor are easy to decompose. According to the high-temperature-resistant and acid-resistant neutralizing corrosion inhibitor and the preparation method thereof, the organic phosphonate-imidazoline derivative composite corrosion inhibitor is uniformly loaded on the surface of a nano-carrier by controlling pressure, temperature and time conditions and supercritical CO auxiliary loading, so that the utilization rate and the corrosion inhibition effect of the corrosion inhibitor are remarkably improved; through synergistic compounding of ammonium molybdate and sodium tungstate and atomic layer deposition of an AlO protective layer, a compact passive film is formed on the surface of a compound, and the corrosion resistance and long-acting corrosion inhibition capacity of the corrosion inhibitor in a high-temperature acid environment are improved.

This invention discloses a corrosion and scale inhibitor suitable for high-salinity water, its preparation method, and its application. The components include nano-SiO2@NH2, organophosphonates, zinc salts, polycarboxylic acid, and nano-SiO2. The nano-SiO2@NH2, organophosphonates, and zinc salts constitute the corrosion inhibitor component in a mass ratio of (0.8~1.2):0.5:(0.3~0.4). The polycarboxylic acid and nano-SiO2 constitute the scale inhibitor component in a total solids content mass ratio of 3:1. The polycarboxylic acid grafting rate in the scale inhibitor component is ≥80%. The corrosion inhibitor component and the scale inhibitor component are compounded in a 1:1 ratio to prepare the finished agent. The preparation method includes preparing the corrosion inhibitor component and adjusting the pH to 3~4, preparing the scale inhibitor component, and compounding the corrosion inhibitor component and the scale inhibitor component to prepare the finished agent. This invention uses nano-SiO2@NH2 to configure corrosion inhibitors and nano-SiO2 to configure scale inhibitors, and strictly mixes each component in steps to achieve a synergistic chemical and physical corrosion and scale inhibition effect. The finished agent has the characteristics of corrosion inhibition rate and CaCO3 inhibition rate of over 95%, MgSiO3 inhibition rate of over 80%, tolerance to high salt environment, high high temperature stability and low biotoxicity.

This invention proposes a composite complexing agent for ultra-clean polypropylene, its preparation method, and its application. The preparation method includes synthesizing a carboxyl-containing organophosphonate monomer; synthesizing a bisβ-diketone derivative; dissolving the organophosphonate monomer and the bisβ-diketone derivative in hexane solvent, adding a phase transfer catalyst, and mixing to obtain the composite complexing agent. This invention achieves efficient removal of metal ash ions such as titanium, magnesium, and aluminum through a synergistic complexing mechanism, while ensuring that the physical properties of polypropylene are not affected. The phosphonic acid groups in the carboxyl-containing organophosphonate monomer have a significant effect on the removal of titanium ash ions. 4+ Exhibiting strong chelating ability, the β-diketone structure in the bisβ-diketone derivative has a strong effect on Mg. 2+ Al 3+ Exhibiting specific complexing properties, both TBAB and polypropylene work synergistically to achieve highly efficient removal of multi-metal ions. TBAB promotes the diffusion of the complexing agent within polymer particles, significantly improving deashing efficiency. The hexane solvent system is compatible with polypropylene production processes, is easily recyclable, and leaves no residue, meeting green chemistry requirements.

This application provides a composite flocculant for hydrometallurgical processing based on phosphonic acid groups and nano-enhancing agents, its preparation method, and its application, relating to the field of hydrometallurgical technology. Calculated based on 100% of the total raw material mass of the composite flocculant, it includes: 70-90% heat-resistant, salt-resistant, and hydrolysis-resistant copolymer; 5-25% inorganic nano-core-shell synergist; and 3-8% buffer dispersant. The heat-resistant, salt-resistant, and hydrolysis-resistant copolymer is a three-dimensional network polymer obtained by free radical copolymerization of acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, N-vinylpyrrolidone, and phosphonic acid-containing functional monomers. The inorganic nano-core-shell synergist has a core-shell structure, consisting of an outer shell and a core with an encapsulated design. The surface of the core is grafted with organophosphonate esters via chemical bonds to form the core-shell structure. This composite flocculant exhibits superior performance; it solves the problems of conventional flocculants requiring large dosages, having low flocculation efficiency, and being prone to degradation and failure in high-temperature, high-salt, and strong-acid environments.

Adhesives comprising: a) 35-85 weight percent of a pressure sensitive adhesive comprising: i) a polymer selected from rubbers and polyacrylate polymers and ii) optionally one or more tackifiers; and dispersed therein b) 15-50 weight percent fire retardant (FR) particles comprising one or more phosphorus-containing compounds selected from organophosphine oxides and organophosphinates. In some embodiments, the phosphorus-containing compounds comprise 35-65 weight percent of an organophosphine oxide and 65-35 weight percent of an organophosphinate. The FR particles may have a D50 particle size of 1-120 micrometers, 40-120 micrometers, or 70-120 micrometers. Adhesive films comprising the adhesives described herein may be free-standing adhesive films or adhesive layers comprised in tapes.

A polymer-free fluid may be used to delay reaction of hydrofluoric acid with a subterranean formation. The fluid contains an organic compound having a bifunctional group, HF or a HF-generating compound, urea and an organophosphonate.

The application provides an organic polymer carrier, a Z-N catalyst and a preparation method and application thereof, and the organic polymer carrier is obtained by copolymerization of monomers including divinylbenzene and unsaturated organic phosphonate monomers; wherein the unsaturated organic phosphonate monomer has a structure shown in formula I: the catalyst has good stereodirecting ability and polymerization catalytic activity, and can be used for ethylene and propylene polymerization, and copolymerization of propylene and other alpha-olefins, and the obtained polymer product has high isotacticity and a molecular weight distribution that can be adjusted in a wide range.

The invention discloses composite resin for a high-temperature-cooking-resistant CPP film and a preparation method of the composite resin, and belongs to the field of polymer composite materials. The composite resin comprises polypropylene, maleic anhydride grafted polypropylene, an antioxidant, a lubricant, a nucleating agent and two specific inorganic modified compounds, namely poly (ethylene-alt-maleic anhydride) grafted nano zirconium oxide and long-chain alkyl phosphonate modified layered zirconium phosphate. The preparation method comprises the following steps: firstly, carrying out dry mixing on the components to obtain a premix, and then carrying out melt blending and extrusion granulation through a twin-screw extruder. Wherein the two modified compounds are respectively aminated by a silane coupling agent, then grafted with an anhydride oligomer and subjected to an organic phosphonic acid ion exchange intercalation reaction. The two functional modifiers with strong interface bonding are introduced, so that the thermal stability, the dimensional stability and the mechanical strength retention rate of the composite resin in a high-temperature cooking environment are remarkably improved, and the obtained film is suitable for food packaging under harsh conditions.