48 results about "Diphosphenes" patented technology

The invention discloses an organic rare earth luminescent complex scintillator as well as preparation and application thereof. The molecular structural formula of the complex is L13ML2, M is Tb, Eu or Er metal ions, and the valence state is + 3; l1 is a tetraphenyl diphosphine imide anion ligand (tpip) or a substituted tpip ligand; l2 is unsubstituted or substituted 2, 2 '-bipyridyl, 1, 10-phenanthroline and a non-ionic chelating group containing a polyheterocycle / fused heterocycle. The organic rare earth luminescent complex scintillator can effectively convert high-energy X-rays into narrow-band visible light and near-infrared light, and is suitable for being applied to the fields of high-energy ray detection and high-resolution imaging.

The application relates to the field of organic synthetic chemistry, in particular to a diamino diphosphine tetradentate ligand, a preparation method thereof and application of the diamino diphosphine tetradentate ligand in Suzuki cross-coupling reaction. The diamino diphosphine tetradentate ligand provided by the application has a structure shown in formula I; due to special spatial structure and electronic properties, the diamino diphosphine tetradentate ligand can provide multi-point coordination to metal and form a stable complex with the metal, so that the activity and stability of a palladium catalyst can be improved, the palladium catalyst can efficiently catalyze the Suzuki cross-coupling reaction for constructing a C-C bond at an extremely low dosage, and the diamino diphosphine tetradentate ligand and the metal palladium catalyst have strong universality to Suzuki cross-coupling reaction substrates, and have wide potential application value.

The invention belongs to the technical field of desulfurizer preparation, and particularly relates to a desulfurizer for oil extraction of oil and gas fields and a preparation method thereof. The desulfurizing agent for oil extraction of the oil and gas field is prepared from the following raw materials: N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture, ammonium molybdate, lysine sodium, hydroxyethylidene diphosphonic acid, polyoxyethylene sorbitan monostearate and the balance of water. According to the desulfurizing agent for oil extraction of the oil-gas field, water is used as a solvent, N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture and ammonium molybdate in raw materials are used as main desulfurizing components to remove organic sulfur and inorganic sulfur, and lysine sodium, hydroxyethylidene diphosphonic acid and polyoxyethylene sorbitan monostearate are added, so that the desulfurizing agent for oil extraction of the oil-gas field is obtained. Due to the synergistic effect of the raw materials, the efficient removal of inorganic sulfur and organic sulfur in oil extraction of an oil and gas field is realized.

The invention relates to the technical field of well cementation engineering, in particular to a multi-element micromolecule compounded high-temperature-resistant oil well cement retarder and application thereof. The multi-element micromolecule compounded high-temperature-resistant oil well cement retarder is prepared from the following raw materials in parts by weight: 20 to 30 parts of disodium 1-hydroxyethylidene-1, 1-diphosphonate, 5 to 10 parts of sodium tetraborate, 5 to 10 parts of sodium gluconate, 2 to 5 parts of chromium sulfate and 65 to 130 parts of water. The invention can effectively solve the problem of performance failure of the traditional oil well cement retarder caused by a large temperature difference environment with a bottom hole circulation temperature of more than 220 DEG C and more than 90 DEG C.

The present invention relates to a process for the preparation of polycyclic aliphatic dialdehydes by hydroformylation of polycyclic aliphatic diolefins in the presence of synthesis gas over an organophosphorus ligand modified metal catalyst system having a transition metal of the 8th-10th subgroup, wherein the hydroformylation is carried out by means of a water-soluble diphosphine or triarylphosphine complex catalyst at a pressure of greater than or equal to 0.5 MPa and less than or equal to 10 MPa and at a temperature of greater than or equal to 70° C. and less than or equal to 150°° C. in a homogeneous liquid reaction phase, the homogeneous liquid phase comprising at least one non-aqueous solvent, diolefin and / or mono- and / or dialdehydes thereof as reaction products and an aqueous catalyst solution, the proportions of these components in the solution being controlled so as to obtain a single-phase solution under the reaction conditions.

The invention relates to the technical field of catalysts, in particular to a chiral diphosphine ligand modification-based ruthenium-carbon hydrogenation catalyst as well as a preparation method and application thereof. The method comprises the following steps: preparing a nitrogen-containing defect carbon carrier; loading ruthenium and reducing; pre-coating the confinement by using an ionic liquid A; introducing a chloride ion template microenvironment; carrying out coordination with a chiral diphosphine ligand; weak coordination anion sizing is realized through the treatment of bis (trifluoromethanesulfonyl) imide silver; and finally introducing chiral ionic liquid B to construct an outer network. The catalyst realizes high enantioselective conversion of a prochiral substrate while maintaining high hydrogenation activity through a multi-layer chiral microenvironment synergistic effect, is excellent in cycling stability, and solves the technical problem that the activity and selectivity of a heterogeneous chiral catalyst are difficult to consider at the same time.

The present invention relates to a large scale GMP synthesis method of a modified glucan conjugate, and more particularly, to a glucan-guanidine-bisphosphonate conjugate wherein the bisphosphonate is an alendronate group. The large-scale GMP synthesis method related to the invention can be used for producing the glucan-guanidine-bisphosphonate conjugate with high purity and medicinal grade. The invention also relates to an application of the glucan-guanidine-bisphosphonate conjugate in a medicine for treating tumors.

This invention discloses a preparation method and application of a lauryl bisphosphonate / mesoporous hydroxyapatite organic-inorganic hybrid composite material, belonging to the field of landfill leachate treatment technology. A solution of dipotassium hydrogen phosphate is prepared and then added dropwise to a mixed solution of calcium chloride and lauryl bisphosphonate. The pH of the solution is adjusted with alkali, washed with water, and then heated and dried to obtain the lauryl bisphosphonate / mesoporous hydroxyapatite organic-inorganic hybrid composite material. This composite material exhibits strong complexing ability with various heavy metal ions, and its adsorption performance is minimally affected by soluble organic acids in landfill leachate, ensuring long-term locking of heavy metal ions and avoiding secondary pollution caused by the re-dissolution of heavy metals. It has strong market potential and application value in the fields of landfill leachate treatment and environmental remediation.

The present invention relates to a stable equivalent body of 2, 2 ''-bis (1-phosphinoethyl)-1, 1''-diferrocene, which is useful as a ligand in various catalytic reactions including aromatic asymmetric hydrogenation, but is difficult to synthesize and / or separate and purify, and a method for efficiently producing the same, and more particularly, to a stable equivalent body of 2, 2 ''-bis (1-phosphinoethyl)-1, 1''-diferrocene, which is useful as a ligand in various catalytic reactions including aromatic asymmetric hydrogenation. The present invention provides: a diphosphine-diborane complex represented by general formula (1) (BH3) 2); and a method for producing the diphosphine-diborane complex, the method comprising reacting a magnesium source and an oxidizing agent with a phosphine-borane complex in this order.

The invention discloses a method for preparing a diphosphonated polysubstituted furan derivative in a water phase. A beta-trifluoromethyl ketene compound and phosphine oxide are subjected to a continuous defluorination phosphonation cascade reaction in a water phase under the promotion of alkali, and finally a series of diphosphonated polysubstituted furan derivatives are obtained through post-treatment and purification. The method has the advantages of green and mild reaction conditions, good tolerance of functional groups, and high atom economic benefits.

The invention relates to anti-yellowing regenerated spandex and a preparation method thereof, the anti-yellowing regenerated spandex comprises recycled spandex, a chain extender and a chelating agent, the recycled spandex comprises one or more of spandex waste silk, spandex waste or spandex components of waste fabrics; the chain extender comprises a bifunctional epoxy compound; the chelating agent is prepared from one or more of triphenyl phosphate, tripolyphosphate, hexametaphosphate, amino trimethylene phosphonate and hydroxyethylidene diphosphonate. Recycled spandex is adopted as a main raw material, and yellowing of a product in the storage and use process is remarkably delayed on the basis of guaranteeing the comprehensive performance of the fiber through repolymerization and addition of specific functional auxiliaries.

The present disclosure relates in some aspects to methods, systems, and kits for using diphosphonic acid to promote N—O bond cleavage in a 3′ O—NH2 nucleotide in a cell or tissue sample. In some aspects, diphosphonic acid is used to promote N—O bond cleavage in a 3′ O—NH2 blocked reversible terminator during multiple cycles of a nucleic acid sequencing reaction in a cell or tissue sample. In some embodiments, the chemical reaction of the 3′ O—NH2 blocked reversible terminator with diphosphonic acid releases free alcohols and phosphoric acid derivatives, which are not damaging to the cell or tissue sample.

The present invention provides a technetium [ 99 Tc] methylene diphosphonate oral preparation and its preparation method and application, which are prepared from the following raw materials in parts by weight: methylene diphosphonic acid; reducing agent; pertechnetium [ 99 Tc] sodium sulfate; adhesive; solvent; the adhesive is made of polymer material; wherein, methylene diphosphonic acid, a reducing agent and high technetium [ 99 Technetium [ 99 Tc] methylene diphosphonate, and promptly 99 The invention discloses a method for preparing the technetium [ 99 The oral preparation of [Tc] methylene diphosphonate has good bioavailability. While achieving the same drug efficacy, it can reduce gastrointestinal irritation and improve patient compliance, achieving unexpected technical effects.

The invention relates to the technical field of catalysis, and particularly discloses a preparation method and application of a transition metal phosphide catalyst. The invention relates to a preparation method of a transition metal phosphide catalyst. The preparation method comprises the following steps: (1) carrier pretreatment: taking a carrier and carrying out dipping treatment by using an alkali solution or an acid solution; (2) active metal loading: dipping the pretreated carrier obtained in the step (1) in a solution containing active metal, and adding 1-hydroxyethylidene-1, 1-diphosphonic acid at the same time; and (3) phosphating treatment: phosphating the carrier loaded with the active metal in the step (2) in an inert atmosphere to obtain the transition metal phosphide catalyst, in the step (2), a functional auxiliary agent accounting for 3-5% of the weight of the carrier is also added, the functional auxiliary agent is composed of titanium oxide, zirconium oxide and cerium oxide, and the weight ratio of titanium oxide to zirconium oxide to cerium oxide is (2-3): (1.4-1.6): 1. The transition metal phosphide catalyst prepared by the invention is improved in the aspects of low-temperature fluidity improvement and durability of biodiesel.

The application belongs to the technical field of desulfurizer preparation, and particularly relates to a desulfurizer for oil and gas field oil production and a preparation method thereof. The desulfurizer for oil and gas field oil production comprises the following raw materials: N-octadecyl-1,3-propanediamine, an ionic liquid-organic copper mixture, ammonium molybdate, sodium lysine, hydroxyethylidene diphosphonic acid, polyoxyethylene sorbitan monostearate, and water as the balance. The desulfurizer for oil and gas field oil production uses water as a solvent, and N-octadecyl-1,3-propanediamine, the ionic liquid-organic copper mixture and ammonium molybdate in the raw materials as main desulfurization components to remove inorganic sulfur and organic sulfur, and sodium lysine, hydroxyethylidene diphosphonic acid and polyoxyethylene sorbitan monostearate are added to enhance the stability and permeability of the system, so that the raw materials synergize to achieve efficient removal of inorganic sulfur and organic sulfur in oil and gas field oil production.

The invention discloses an environment-friendly silicon material surface cleaning reagent and a preparation method thereof, the environment-friendly silicon material surface cleaning reagent comprises hydrofluoric acid, citric acid, EDTA tetrasodium, 1-hydroxyethylidene-1, 1-diphosphonic acid and pure water, and the environment-friendly silicon material surface cleaning reagent is characterized in that the citric acid accounts for 20-25%, the hydrofluoric acid accounts for 4-5%, the EDTA tetrasodium accounts for 0.5-1%, the 1-hydroxyethylidene-1, 1-diphosphonic acid accounts for 0.5-1%, and the pure water accounts for 0.5-1%. The proportion of the hydroxyethylidene diphosphonic acid is 0.5%-1%, the proportion of the pure water is 70%-73%, the chemical formula of the hydrofluoric acid is HF, the chemical formula of the citric acid is C6H8O7, the chemical formula of the EDTA tetrasodium is C10H12N2Na4O8, the chemical formula of the hydroxyethylidene diphosphonic acid is C2H8O7P2, and the chemical formula of the pure water is H2O. According to the environment-friendly silicon material surface cleaning reagent and the preparation method thereof, citric acid is used as a main material, HF and the chelating agent are matched, metal pollutants and surface oxides in a silicon material are removed, meanwhile, the reagent does not contain substances which chemically react with the silicon material, raw material loss is effectively avoided, and the raw material utilization rate is increased.

The invention relates to the technical field of oilfield exploitation, in particular to a liquid gel breaker for guanidine gum and polymer fracturing fluid as well as a preparation method and application of the liquid gel breaker. The cleaning agent is prepared from, by mass, 10%-12% of ammonium persulfate, 6%-7.5% of sodium hypochlorite, 0.5%-1% of aminoethanol phosphoric acid, 0.5%-1% of hydroxyethylidene diphosphonic acid, 0.4%-0.8% of ethylene diamine tetraacetic acid disodium salt, 10%-12% of benzoyl peroxide, 0.5%-1% of tetramethylguanidine, 0.5%-1% of triethylamine, 3%-4% of isopropanol and the balance deionized water, and the total amount is 100%. The oxidant stabilizer is added into the liquid gel breaker, so that the oxidant is prevented from being decomposed and damaged under the storage condition, and the liquid gel breaker has the characteristics of high flash point and low volatility and is safe to store; the added oxidant activator can be suitable for gel breaking under a low-temperature condition, and the applicable range of the gel breaking temperature reaches 20-180 DEG C; and the fracturing fluid is thorough in gel breaking and does not cause damage to artificial fractures and reservoirs.

The invention discloses a synthesis method of hydroxymethylenediphosphonic acid disodium salt, and relates to the field of radiopharmaceuticals, the synthesis method comprises the following steps: S1, tetraisopropyl methylenediphosphonate is subjected to a substitution reaction in a sodium hypochlorite solution to obtain tetraisopropyl dichloromethylenediphosphonate; s2, carrying out a dehalogenation reaction on the tetraisopropyl dichloromethylene diphosphate in a sodium sulfite solution to obtain tetraisopropyl monochloromethylene diphosphate; s3, carrying out a hydrolysis reaction on the tetraisopropyl monochloromethylenediphosphonate, so as to obtain pyridinium monochloromethylenediphosphonate; and S4, carrying out substitution reaction on the monochloromethylenediphosphonic acid pyridinium salt to obtain the hydroxymethylenediphosphonic acid disodium salt. The adopted raw materials and reagents are wide in source, low in price and easy to obtain, high-risk or highly-toxic chemicals are not contained, the technological process is environmentally friendly, the development direction of green chemistry is met, and good industrial application prospects are achieved.

The invention relates to the field of organic chemistry, and more particularly to compositions for inhibiting the deposition of scale in an oil-bearing formation and in gas and oilfield equipment and to methods for the use of said compositions. A method for inhibiting scale in oil-bearing formations is characterized in that a water-based composition is introduced into the near-wellbore region of a formation, said composition including (3-aminopropyl)triethoxysilane (APTES), sodium lignosulphonate (LS) and a scale inhibitor, wherein at least one of the following agents is used as the scale inhibitor: hydroxyethylidene diphosphonic acid (HEDP), hydroxyethylidene diphosphonic acid tetrasodium salt or a zinc complex of hydroxyethylidene diphosphonic acid disodium salt (HEDP-Zn). The technical result is an increase in the efficiency of scale inhibition as a result of the prolonged release of the inhibitor.

The application relates to the technical field of oilfield exploitation, and discloses a nano slow-release capsule for scale inhibitors and a preparation method and application thereof. The method comprises the following steps: (1) emulsifying a hydroxyethylidene diphosphonic acid-containing aqueous solution I, an oil phase and a nonpolar organic solvent to obtain a W / O emulsion; (2) performing heating and solidification treatment on the W / O emulsion to obtain the nano slow-release capsule for scale inhibitors; and the oil phase contains polymethyl methacrylate, an emulsifier and a polar organic solvent. The nano slow-release capsule has good slow-release performance, and solves the problem of low utilization rate of hydroxyethylidene diphosphonic acid in the process of scale inhibition in oilfield exploitation.

The application relates to the technical field of concrete admixtures, and particularly discloses a concrete admixture for inhibiting negative effects of flocculants and a preparation method and application thereof. The concrete admixture for inhibiting negative effects of flocculants comprises the following components in mass fractions: 1-2 parts of a water reducing agent, 1-1.5 parts of hydroxyethylidene diphosphonic acid, 0.1-0.5 parts of sodium monofluorophosphate, 0.1-0.5 parts of glucomannan and 0.05-0.1 parts of turpentine. The concrete admixture for inhibiting negative effects of flocculants can effectively neutralize or weaken the adverse effects of flocculants on the performance of concrete, while keeping good workability and mechanical properties of the concrete, so that the long-term durability of the concrete is comprehensively improved.

This invention belongs to the field of wet electrolytic refining technology for recycled lead, and provides a method for electrolytically preparing ultra-high purity lead. It involves constructing a 1-hydroxyethylidene-1,1-diphosphonic acid-modified lead carbonate seed layer on the cathode plate surface, combined with a bypass impurity removal unit to continuously remove impurity ions from the electrolyte, and then using staged current density electrolysis to ensure uniform nucleation and stable deposition of lead on the cathode surface. The resulting cathode lead has a purity of not less than 99.996 wt%, and the deposited layer is dense, flat, and has a low risk of inclusions. This method solves the problems of difficulty in balancing high-throughput deposition and ultra-high purity, as well as the difficulty in synchronizing seed layer adhesion stability and pollution control in existing processes. It is suitable for the high-value preparation of recycled lead from waste lead-acid batteries.

The invention relates to compositions comprising Component A: Polyalkylene terephthalate in an amount of between 1 and 85 wt%; Component B: at least one organic phosphinic salt of formula (I) and / or at least one organic diphosphinic salt of formula (II), in which R1, R2 are identical or different and stand for a linear or branched C1- C6-alkyl and / or for C6-C14-aryl, R3 stands for linear or branched C1-C10alkylene, C6-C10arylene or for C1-C6-alkyl-C6-C-10-arylene, or C6-C10-aryl-C1-C6alkylene, M is aluminium, zinc or titanium, m is an integer of 1 to 4; n is an integer of 1 to 3, and x is 1 or 2, wherein n, x and m in formula (II) may at the same time adopt only integer values such that the diphosphinic salt of formula (II) as a whole is uncharged; in an amount of between 3 and 30 wt%; Component C: phosphazene in an amount between 0.5 and 15 wt%; Component D: Reaction product with melamine derivative with phosphoric acids or condensed phosphoric acids or mixtures thereof, in an amount of between 0.5 and 20 wt%; Component E: Epoxy compound with at least two epoxy groups per molecule in an amount of between 0.1 and 7 wt%; Component F: Copolyester comprising polyester hard segments, and soft segments derived from polyalkylene oxide glycol, wherein Component F is present in an amount of between 0.1 and 85 wt%; Component G: Reinforcers in an amount of between 5 and 60 wt%; Component H: Dicarboxylic acid anhydride functionalized polyolefin in an amount of between 0.1 and 5 wt%; and optionally Component I: a metal carbonate in an amount of between 0 and 5 wt%; and / or Component J: further additives in an amount of between 0 and 30 wt%; wherein the weight percentage is with respect to the total weight of the composition; as well as products made therefrom.

The invention relates to the technical field of etching solutions, and discloses a multilayer copper-molybdenum etching solution for the LED field, which comprises the following components by mass percent: 5.5-7.5% of sodium perborate; 6%-8% of hydrogen peroxide; 6%-7% of triammonium phosphate; 1%-2% of citric acid; 1%-2% of sodium citrate; 1.0% to 1.5% of iminodiacetic acid; 0.05%-0.1% of tin sulfate; 0.30%-0.45% of a dipotassium hydroxyethylidene-1, 1-diphosphonate solution; 0.08%-0.10% of sodium nitrite; 0.2% to 0.4% of water-soluble mercaptobenzothiazole; 0.02% to 0.05% of ethoxylated acetylene glycol; 0.02% to 0.05% of diethylene triamine pentamethylene phosphonate; and the balance of ultrapure water. A combination of sodium perborate and hydrogen peroxide is adopted as an oxidation system, a composite additive, a novel metal complexing agent and a surfactant matched with the etching solution are adopted, and the multilayer copper-molybdenum etching solution which is moderate in etching rate, good in anisotropy, high in substrate material selectivity and good in chemical stability is prepared.

Disclosed are platinum complexes with binaphthyl diphosphine ligands for catalyzing hydroxycarbonylation of olefinically unsaturated compounds.

The present invention relates to the field of catalytic hydrogenation, more particularly to the semi-hydrogenation of allene to the corresponding olefin in the presence of a homogeneous catalytic system comprising a cobalt salt, a bidentate diphosphine ligand and a weakly or non-coordinating monovalent anion or reducing agent.

The present invention provides a flame-retardant and heat-insulating fabric for fire-fighting clothing and a preparation process thereof, which belongs to the technical field of fire-fighting fabrics; the preparation process includes the following steps: preparing coated modified ammonium polyphosphate; modifying expanded perlite; preparing a flame-retardant outer layer fabric; preparing a heat-insulating core layer fabric; preparing an antibacterial inner layer fabric; and bonding. The flame-retardant and heat-insulating fabric for fire-fighting clothing of the present invention includes a flame-retardant outer layer fabric, a heat-insulating core layer fabric, and an antibacterial inner layer fabric, wherein the ammonium polyphosphate is first dispersed in deionized water, and polyethyleneimine is added under acidic conditions, and the amino groups on the polyethyleneimine are first subjected to an ion exchange reaction with the ammonium ions of the ammonium polyphosphate to preliminarily coat the ammonium polyphosphate, and then a hydroxyethylene diphosphonic acid solution is added to carry out a salt-forming reaction to prepare a coated modified ammonium polyphosphate with a core-shell structure. After the coated modified ammonium polyphosphate is mixed with polyester powder and granulated to prepare the flame-retardant outer layer fabric, the flame retardant properties of the flame-retardant outer layer fabric can be effectively improved.

The invention relates to compositions comprising Component A: Polyalkylene terephthalate in an amount of between 1 and 85 wt%; Component B: at least one organic phosphinic salt of formula (I) and / or at least one organic diphosphinic salt of formula (II), in which R1, R2 are identical or different and stand for a linear or branched C1- C6-alkyl and / or for C6-C14-aryl, R3 stands for linear or branched C1-C10alkylene, C6-C10arylene or for C1-C6-alkyl-C6-C-10-arylene, or C6-C10-aryl-C1-C6alkylene, M is aluminium, zinc or titanium, m is an integer of 1 to 4; n is an integer of 1 to 3, and x is 1 or 2, wherein n, x and m in formula (II) may at the same time adopt only integer values such that the diphosphinic salt of formula (II) as a whole is uncharged; in an amount of between 3 and 30 wt%; Component C: phosphazene in an amount between 0.5 and 15 wt%; Component D: Reaction product with melamine derivative with phosphoric acids or condensed phosphoric acids or mixtures thereof, in an amount of between 0.5 and 20 wt%; Component E: Epoxy compound with at least two epoxy groups per molecule in an amount of between 0.1 and 7 wt%; Component G: Reinforcers in an amount of between 5 and 60 wt%; Component H: Dicarboxylic acid anhydride functionalized polyolefin in an amount of between 0.1 and 5 wt%; Component I: a metal carbonate in an amount of between 0.05 and 5 wt%; and optionally Component F: Copolyester comprising polyester hard segments, and soft segments derived from polyalkylene oxide glycol, wherein Component F is present in an amount of between 0 and 85 wt%; and / or Component J: further additives in an amount of between 0 and 30 wt%; wherein the weight percentage is with respect to the total weight of the composition; as well as products made therefrom.

The application provides a floor oil sludge microbial treatment inducer and application thereof. The floor oil sludge microbial treatment inducer comprises a modified pretreatment agent and an exogenous microbial enzyme activity promoter; the modified pretreatment agent comprises sodium carboxymethyl cellulose, sodium carboxyethylidene diphosphonate, sodium humate, kaolinite and ethanol; and the exogenous microbial enzyme activity promoter comprises a KH2PO4-K2HPO4 buffer, yeast powder, lactose, linseed oil and petroleum ether. The floor oil sludge microbial treatment inducer can solve the problem of low efficiency of microbial treatment of floor oil sludge soil in the prior art and is suitable for the field of oil pollution treatment.