86 results about "Thiophosphoric Acid Esters" patented technology

Methods and intermediates for the preparation of oligomers containing diastereomerically enriched phosphorothioate and boranophosphate linkages are disclosed.

A lubricative composition for industrial machinery and equipment which comprises a base oil selected from among mineral oils, fats and oils, synthetic oils and mixture of two or more of them, and at least one additive selected from among the following components (A) to (D): component (A): (A-1) a phosphorus-containing carboxylic acid and/or (A-2) a thiophosphoric ester, component (B): a dispersant viscosity index improver, component (C): (C-1) a specific amidocarboxylic acid compound and/or (C-2) a specific carboxylic acid compound, and component (D): an ester oiliness improver. The composition is favorable as a lubricating oil composition and useful as a gear oil composition, a lubricating oil composition for paper machines or a lubricating oil composition for slide guides, a hydraulic oil, or the like.

Aldehydes useful as H₂S sulfide scavengers may be corrosive to some metals such as steel, iron and aluminum, but the corrosive effect of the aldehydes may be mitigated by employing a corrosion inhibitor selected from the group consisting of a di-basic soluble phosphate salt, a tri-basic soluble phosphate salt, a phosphate ester, a thiophosphate ester, a thioamine, and combinations thereof.

A disclosed fire retardant resin composition includes a thermoplastic resin and a fire retardant. The fire retardant is formed of phosphorated polysaccharide that is formed by attaching thiophosphoric acid ester or phosphoric acid ester to a side chain of natural polysaccharide.

The invention discloses small interfering nucleic acid as well as a composition and application thereof. The invention claims to protect siRNA, which is PP-1758, PP-17660, PP-20091, PP-20163, SP-26, SP-179, SP-2013, SP-2867, SP-3169, SP-3552, MG-83, NP-208 or NP-241, wherein a part of nucleotides of the positive-sense strand are 2 '-O-methyl ribonucleotides, and a part of phosphate groups are thiophosphate groups. The invention provides brand new siRNA and a composition thereof. The brand new siRNA and the composition thereof can effectively prevent and/or treatment novel coronavirus.

The invention relates to a polyurea-based grease additive composition. Components and percentage content of the polyurea-based grease additive composition are that: base oil is mineral oil and synthetic oil or blending oil of the mineral oil and the synthetic oil, and the content of the base oil is from 71% to 91.5%; a thickening agent is composed of a common reactant of isocyanate, fatty amine and alicyclic amine, and the content of the thickening agent is from 6% to 12%; an antioxidant uses amine antioxidants, and the total content of the antioxidant is from 0.5% to 3%; an extreme-pressure agent uses a mixture of sulfurized isobutylene, dialkyl group dithiophosphate and dialkyl group dithiocarbamic acid, and the total content of the extreme-pressure agent is from 0.5% to 5%; the content of an antirusting agent is from 0.5% to 3%; an antiwear agent is triphenyl thiophosphate and thiophosphoric acid ester or a mixture of the triphenyl thiophosphate and the thiophosphoric acid ester, and the total content of the antiwear agent is from 0.5% to 3%; and tackifier is polyisobutene and polymethyl methacrylate or a mixture of the polyisobutene and the polymethyl methacrylate, and the total content of the tackifier is from 0.5% to 3%. Due to the fact that appropriate raw material proportion is selected and used, grease has good high-temperature performance, a dropping point is higher than 260 DEG C, and the polyurea-based grease additive composition has a good water-resisting property, high and low temperature resistance and extreme pressure anti-wear performance, and can be applied to lubrication of each key running part of a continuous casing machine.

The invention relates to an oil film bearing lubricating oil with high water separation performance. The invention is characterized in that the oil film bearing lubricating oil comprises the following materials of: bi-polyisobutene succimide, phytic acid, 6-tert-butyl-3-methyl phenol, triphenyl thiophosphate, dialkyl pentasulfide, triazole octadecylamine salt, di(2, 4-ditert-butyl phenyl) pentaerythritol biphosphite ester, butyl isooctylphosphate laurylamine salt, dodecene hydrocarbon butane diacid, oxozone trimethylene derivates of amine, petroleum acid polyether ester, polyacrylic ester, oil-soluble polyether macromolecular compound, bisphenyl propyl dimethyl siloxane and base oil. The product has excellent water separation performance and good extreme-pressure abrasion resistance, and can meet the special requirements of working conditions of humidity and wateriness.

The invention discloses a composite collecting agent for bulk floatation of copper sulfide molybdenum ores. The collecting agent is a stable oily product which is formed by mixing 50%-70% of thiocarbamic acid ester, 2%-10% of thiophosphoric acid ester, 10%-30% of mixed non-polar hydrocarbon oil and 10%-20% of terpene alcohol. The collecting agent has the advantages that the thiocarbamic acid ester has the selective chelation on the exposing active points, such as copper and molybdenum, on the surfaces of minerals, the thiophosphoric acid ester has the selective adsorption function on the copper-containing minerals, the non-polar hydrocarbon oil can be adsorbed on the surface of the copper sulfide molybdenum ores through the Van der Waals force, and the terpene alcohol is a solution medium and has good air bubble property, so under the synergistic effect of the thiocarbamic acid ester, the thiophosphoric acid ester, the mixed non-polar hydrocarbon oil and the terpene alcohol, a good ore selection index can be obtained, and the agent mechanism is simplified; the collecting agent is used at the ore slurry temperature of 5-35 DEG C, and the usage amount is between 80-160g/t according to the change of the contents of usable minerals in the ores.

The lubricant composition of this invention comprises a base oil and an additive, which is at least one selected from the group consisting of an organic sulfonate, a carboxylate, a thiocarbamate and a thiophosphoric acid ester salt. The lubricant composition can effectively suppress hydrogen embrittlement-caused flaking of an element, such as a rolling bearing, a sliding bearing, a gear, a ball thread, a linear guide, a linear bearing, a cam and various joints in a high concentration hydrogen environment. The invention provides also a rolling bearing, a sliding bearing, a gear, a ball thread, a linear guide, a linear bearing, a cam and various joints using the lubricant composition.

The invention discloses a preparation method of functional lubricating oil, which comprises the following steps: 1) respectively dissolving zinc acetate and thioacetamide into water to prepare solutions; 2) carrying out hybrid reacting of the zinc acetate solution and the thioacetamide solution with dialkyl phosphorodithioate and hydrazine hydrate, and separating, washing and drying the obtained precipitate to obtain the nanometer zinc sulfide modified by the dialkyl phosphorodithioate; 3) stirring and mixing nanometer molybdenum disulfide and nanometer borate with a coupling agent to obtain the coupling agent modified nanometer composite powder; and 4) adding the nanometer zinc sulfide modified by the dialkyl phosphorodithioate obtained in the step 2) in base oil, adding the coupling agent modified nanometer composite powder obtained in the step 3) in the base oil, and successfully blending to obtain the lubricating oil. The functional lubricating oil disclosed by the invention is excellent in antifriction and abrasive resistance, high in bearing capacity, and has a repairing function on the abraded surface.

The invention discloses a specific marking method for 5-hydroxymethyluracil on DNA (deoxyribonucleic acid) and belongs to the technical field of molecular biology. The specific marking method comprises the following steps: transferring gamma-thiophosphate to 5-hmU from 5-O-thiotriphosadenine by using 5-hmU separated from bacteriophage M6 of pseudomonas aeruginosa so as to generate 5-thiophosphoricacid methyluracil, representing the generated 5-thiophosphoric acid methyluracil by using a liquid chromatogram-tandem mass spectrometry method, and marking sulfydryl through crosslinking chemistry,so as to achieve specific marking on 5-hydroxymethyluracil on DNA. By adopting the method disclosed by the invention, defects that a great amount of detection samples are needed, chemical reaction conditions are harsh, the reaction efficiency is low, and the like, can be effectively overcome.

The invention relates to special oil composition for a gear hobbing machine and an application of the special oil composition, and mainly solves the problems that hydraulic oil is polluted after leakoil enters a hydraulic system due to poor compatibility between oil for the gear hobbing machine and the hydraulic system of equipment and a tool is not protected ideally as a result of insufficient lubrication property of oil products in the prior art. The oil composition is prepared from the following components in parts by weight: a) 100 parts of mineral base oil, b) 0.1-10 parts of extreme-pressure anti-wear agent, c) 0.1-1.0 part of a pour point depressant, d) 0.01 to 0.5 parts of a rust inhibitor and e) 0.01 to 2.0 parts of an antioxidant; the extreme-pressure anti-wear agent is a mixture of at least one of sulfurized olefin, phenyl sulfide, sulfurized aliphatic acid ester or chlorinated paraffin and at least one of thiophosphoric acid diester amine salt, phosphate amine salt, phosphorothioate, zinc dialkyldithiophosphate salt or a derivative of the zinc dialkyldithiophosphate salt. With adoption of the technical scheme, the problems are better solved, and the extreme pressure anti-wear agent can be used in industrial production of the special oil composition for the gear hobbing machine.

The invention relates to a diesel engine oil composition and application thereof, and mainly solves the problems of insufficient anti-wear and extreme pressure performance of internal combustion engine oil in the prior art. The diesel engine oil composition comprises the following components by weight: a) 2-5 parts of a metal detergent, which is formed by compounding a sulfonate and sulfurized alkyl phenolate; b) 1-5 parts of a polyisobutylene succinimide ashless dispersant; c) 1-3 parts of an anti-wear preservative, which is formed by compounding long chain primary alcohol based zinc dialkyldithiophosphate and primary alcohol based zinc dialkyl dithiophosphate; d) 0.5-3 parts of a composite antioxidant, which is formed by compounding an amine type antioxidant and a phenolic ester antioxidant; e) 0.5-3 parts of an antiwear agent, which is one of or compounded by several of phosphorothioates, thiocarbamates and antimony thiocarbamate; and f) 85-105 parts of base oil. The technical scheme adopted by the invention well solves the problems, and can be used in a vehicle diesel engine system.

Preparation of O,O-dimethyl phosphoramidothioate and O,O-dimethyl phosphoroamidothioate. A process of making O,O-dimethyl phosphoroamidothioate is described including reacting sulfur with PCl₃ to form PSCl₃, reacting the PSCl₃ formed with methanol to form O-methyl phosphorodichloridothioate, and reacting the O-methyl phosphorodichloridothioate formed with methyl lye to form O,O-dimethyl phosphorochloridothioate in solution in CH₂Cl₂, and reacting the O,O-dimethyl phosphorochloridothioate formed with sodium hydroxide and ammonium hydroxide to form O,O-dimethyl phosphoroamidothioate in solution in CH₂Cl₂. Reacting the O,O-dimethyl phosphoroamidothioate formed with catalytic dimethyl sulfate to form methamidophos, and reacting the methamidophos formed with acetic anhydride to form N-(methoxy-methylsulfanylphosphoryl) acetamide is also described. Throughout the process, the O,O-dimethyl phosphorochloridothioate and the O,O-dimethyl phosphoroamidothioate formed are maintained in solution in CH₂Cl₂ at all times.

The invention relates to a reactive flame retardant vinyl organosilicon cage-shaped thiophosphate compound as well as a preparation method and application thereof. The structure of the compound is shown in the specification. The preparation method comprises steps: in an organic solvent, enabling methyl vinyl dichlorosilane or methyl vinyl dimethoxysilane to react with 2 times of molar amount of cage phosphorothioate phosphorothioate, and performing purification treatment to obtain vinyl organosilicon caged thiophosphate. The compound disclosed by the invention is high in flame-retardant efficiency and good in charring property, can be used as a reactive flame retardant, and can be copolymerized with monomers or resins containing unsaturated double bonds, such as unsaturated resin, styrene,acrylate and vinyl acetate to form a body flame-retardant material; the reactive flame retardant vinyl organosilicon cage-shaped thiophosphate compound can also be used as an additive flame retardantfor flame-retardant charring agents of epoxy resin, polyester, polyurethane, polyolefin and other materials; the process is simple, equipment investment is low, and industrial production is easy to realize.

The invention discloses a waste residue-free preparation method of O,O-dialkyl thiophosphoryl chloride, which is characterized by comprising the following steps: by taking dialkyl chlorophosphite as an intermediate, performing chlorination with O,O-dialkyl phosphorodithioate under the effect of strong Lewis acid metal chloride to prepare O,O-dialkyl thiophosphoryl chloride with the structural general formula shown in the specification, wherein the chemical equation is shown in the specification. The method for preparing high-content O,O-dialkyl thiophosphoryl chloride, disclosed by the invention, has the advantages of simple process route, mild reaction conditions, simple after-treatment and low production cost, and is convenient for industrial transformation; and the method avoids or reduces pollution, strictly controls the process, saves after-treatment and prevents the generation of viscose waste sulfur residues.

A lubricating composition includes, in weight %, at least 90 percent of a vegetable oil, and an additive composition including:

• • (a) about 1.5 to 2 percent triphenylphosphorothionate (TPPT),
  • (b) about 0.1 to 3 percent hindered phenolic antioxidant,
  • (c) about 0.05 to 0.25 percent 1-[di(phenyl)aminomethyl]tolutriazole, and
  • (d) about 0.05 to 0.5 percent alkyl succinic acid half ester rust inhibitor.

To provide an electrode for a solid-state battery, capable of improving uniformity of electrode materials and suppressing decomposition of a solid electrolyte or an electrode active material by a binder or a solvent. An electrode for a solid-state battery including a solid electrolyte including sulfide and/or oxide, an electrode active material, a binder, and a conductive auxiliary agent, at least one of the solid electrolyte and the electrode active material having a surface being modified with a surface modifying substance, wherein the surface modifying substance is at least one selected from the group consisting of carboxylate, thiocarboxylate, carboxylic acid, thiocarboxylic acid, phosphate ester, thiophosphate ester, ketone, nitrile, alcohol, thiol, and ether.

The invention provides a photosensitive COFs catalyst and a method for catalytic synthesis of thiophosphate derivatives. The photosensitive COFs catalyst takes 1,3,6,8-tetra(4-formylphenyl)pyrene and 1,1'-[1,4-phenylene bis(methylene)] bis(1-azacyclonium)salt as raw materials, and the photosensitive COFs catalyst is synthesized through a solvothermal method under the action of alkali. The preparation method comprises the following steps: by taking photosensitive COFs as a catalyst and taking a substituted phosphine oxide derivative and a thiol derivative as reactants, conducting reacting for 1-30 hours in an air or oxygen environment under the conditions of room temperature, existence of a solvent and illumination, removing the reaction solvent after the reaction is finished, and then obtaining the thiophosphate derivative by a column chromatography separation method or a recrystallization method. The reaction belongs to a heterogeneous catalytic reaction, the catalyst is good in stability, high in catalytic activity, high in reaction efficiency, capable of being recycled for multiple times, simple in synthesis process, high in product selectivity, few in by-product and environmentally friendly, and has a relatively strong industrial application prospect.