191 results about "Phosphorus acid" patented technology

The present invention provides a composition comprising the product prepared by hearing together: (a) a dispersant; and (b) a 1,3-dicarboxylic acid or 1,4-dicarboxylic acid of an aromatic compound, or a reactive equivalent thereof; and at least one of: (c) 2,5-dimercapto-1,3,4-thiadiazole or a hydrocarbyl-substituted 2,5-dimercapto-1,3,4-thiadiazole, or an oligomer thereof; (d) a borating agent; and (e) a phosphorus acid compound, or a reactive equivalent thereof, said heating being sufficient to provide a reaction product of (a), (b), and (c), (d), or (e), which is soluble in an oil of lubricating viscosity. The invention further provides a use for the composition.

A process for recovering chloromethane from the tail gas exhausted in the procedure of preparing glyphosate by phosphorus acid-phytanic acid method is disclosed. As said tail gas contains chloromethane (20-90%) and impurities (methanol, methylal, H2O and hydrogen chloride), it uses solvent to absorb impurities, or condenses the impurities, or convents the impurities to chloromethane, so obtaininghigh-purity chloromethane.

This invention relates to waterborne coating compositions having improved compatability with metal pigments, i.e., improved shelf life and reduced gassing and gellation. The compositions comprise at least one aqueous dispersion of (1) at least one emulsion copolymer polymerized from (a) at least one ethylenically unsaturated anionic monomer and (b) at least one other olefinically unsaturated monomer, said copolymer being made using at least one phosphate surfactant having at least one phosphorus acid group or salt thereof, said copolymer being crosslinked, and (2) at least one non-water soluble metal pigment. The compositions are useful in paints and other coatings.

The present invention relates to a composition comprising a stable aqueous dispersion of large acrylic based polymer particles and small acrylic based polymer particles wherein the large polymer particles comprise structural units of a phosphorus acid monomer or a salt thereof; and wherein the small polymer particles comprise a substantial absence of structural units of any phosphorus acid monomer and salts thereof. The bimodal dispersion of the present invention provides a way of making a high solids adsorbing latex with high hiding efficiency.

The invention discloses a silver nanometer column array erected on the orifice of a porous alumina template and a preparation method and application thereof. The silver nanometer column array is characterized in that silver nanometer columns with the heights of 30-200 nanometers and the diameters of 30-60 nanometers are sequentially hexagonally arrayed on the periphery of the orifice of the porous anodic alumina template with taper holes; and silver nanometer particles with the particle size of 5-40 nanometers are attached to the walls of the taper holes. The preparation method comprises the following steps of: firstly placing an aluminum sheet into an oxalic acid solution, and carrying out anodization at direct-current voltage for at least 2 hours; then placing into a phosphorus-chromium acid mixed solution, and soaking for at least 3 hours to obtain an intermediate product; then firstly placing the intermediate product into the oxalic acid solution, carrying out the anodization at the direct-current voltage for at least 20 seconds, then placing the intermediate product into a phosphorus acid solution, and soaking for at least 1 minute; repeating the process for at least 10 times to obtain the alumina template with the holes in the shape of the taper holes; and then placing the alumina template into an ion sputter for silver sputtering so as to prepare a target product. The silver nanometer column array disclosed by the invention can be used as an active base of surface-enhanced Raman scattering; and the content of rhodamine or tetrachlorobiphenyl which is attached to the silver nanometer column array is measured by using a laser Raman spectrometer.

The invention refers to a method which prepare high-density global c, using ferrous salt, phosphorus acid, ammonia and lithium hydrate, lithium phosphate as initial material, firstly, adding ferrous salt solution and phosphor fountain in reactor by metering pump, adjusting pH value in reactor by queous alkali, occurring deposition react, the precipitate overflowing along with mother liquid, washing, filtrating and drying the effluent deposit would receive global hydrated ferrous phosphate; confecting ferrous phosphate and lithium phosphate suspend, getting mole ratoo of Li+:Fe2+:PO43- is 1:1:1, then adding carbon fountain, getting lithium phosphate and ferrous phosphate mix prodromal body after intimate mixing, solid-liquid separation; Calcining prodromal body for 5-30h in 500-800Deg C inertia and deoxidized atmosphere, cooling to room temperature with furnace, then getting global ferric lithium phosphate powder. The grain-size range of this powder is 0.5-30 mum, particle mean size is 8-13 mum, tap density is as high as 1.5- 2.0g/cm3, first discharge capacity is bigger than 120mAh/g, discharge voltage flat roof is 3.4V, hasing fine application foreground.

A coating composition comprising a polyether polyol having a hydroxyl functionality of 3 to 8 and the reaction product of:

(i) a phosphorus acid, and

(ii) a polyepoxide and/or a polyester.

The compositions are useful for coating containers of all sorts, such as food and beverage containers. The compositions can be formulated to be substantially free of bisphenol A (BPA), bisphenol A diglycidyl ether (BADGE) and other derivatives of BPA.

The invention relates to a manufacturing method of vehicle seamless steel tubes. Surface quality of finished products can be improved through twice phosphorus acid saponification processing and secondary cold drawing processing; during manufacturing, external and internal quality of the products can be guaranteed through twice test, performance index of the steel tubes with the tensile strength larger than or equal to 500Mpa and extension larger then or equal to 10% and internal and external surface roughness smaller than or equal to 0.4 micrometers can be achieved by directly using saw cutting without heat treatment and mechanical machining, requirements of the steel tubes of vehicle parts on strength, toughness and surface quality are met, and meanwhile, technical requirement of processing-free steel tube parent materials of the vehicle parts can be met.

The CMP polishing liquid for polishing palladium of this invention comprises an organic solvent, 1,2,4-triazole, a phosphorus acid compound, an oxidizing agent and an abrasive. The substrate polishing method is a method for polishing a substrate with a polishing cloth while supplying a CMP polishing liquid between the substrate and the polishing cloth, wherein the substrate is a substrate with a palladium layer on the side facing the polishing cloth, and the CMP polishing liquid is a CMP polishing liquid comprising an organic solvent, 1,2,4-triazole, a phosphorus acid compound, an oxidizing agent and an abrasive.

The invention belongs to the field of auxiliary casting materials and relates to a composite phosphate inorganic adhesive for 3D sand mold printing and a preparation method thereof. The composite phosphate inorganic adhesive for 3D sand mold printing comprises the following components in percentage by mass: 4.5-9.5% of aluminum hydroxide, 1-4% of magnesium carbonate, 2.5-6.5% of boric acid, 30-70% of 85% industrial phosphoric acid, 0.5-1.5% of carbamide, 1-3% of xylitol, 1-3% of D-sorbitol, 0.5-1.5% of citric acid, 1.5-6.5% of aluminum triphosphate, 1.5-6.5% of aluminum dihydrogen tripolyphosphate and 7-37% of deionized water. According to the technical scheme, the composite phosphate inorganic adhesive for 3D sand mold printing has the beneficial effects that the prepared composite phosphate inorganic adhesive is low in viscosity and high in adhesion strength; after the composite phosphate inorganic adhesive is roasted at the high temperature over 600 DEG C, the composite phosphate inorganic adhesive is low in residual strength; the adhesive is excellent in collapsibility and excellent in moisture absorption resistance.

The present invention is a composition comprising a stable aqueous dispersion of polymer particles comprising structural units of a phosphorus acid monomer or a salt thereof and structural units of a photoinitiator monomer. Gloss retention of paints containing the latex described herein is markedly improved over paints that do not have photoinitiator chemically bound to the latex particles.

The invention discloses a method for separating and purifying Natto kinase mainly using ion exchange chromatography. The steps are composed of crude enzyme liquid preparation, gel chromatography and ion exchange chromatography, activating bacillus subtilis through slant medium, medium culture and fermenting in ferment medium, natto kinase being secreted to fermented solution by bacillus subtilis, centrifuging to collecting upper clear solution, then proceeding (NH#-[4])#-[2]SO#-[4] graded precipitation, redissolving using phosphorus acid buffer, adding redissolved solution to gel chromatography column to proceeding gel filtration, collecting elution peak containg natto kinase, adding fraction of having natto kinase activity from gel filtration to inon exchange chromatography column, proceeding adsorbing, collecting elution peak containg natto kinase, freeze drying to get purified natto kinase. The invention has merits of condition, low cost, simple process , easy operation ,high purity and short production period, etc.

A lubricating oil composition for transmissions having improved fuel saving properties, excellent metal fatigue prevention properties, and heat resistance containing: a lubricating base oil containing (A) a mineral base oil having a 100° C. kinematic viscosity of 1.5 mm²/s or higher and 3.5 mm²/s or lower, a pour point of −25° C. or lower, a viscosity index of 105 or greater, a % C_p of 85 or greater, a % C_N of 2 or greater and 20 or less and a % C_A of 3 or less and (B) a monoester-based base oil having a 100° C. kinematic viscosity of 2 to 10 mm²/s; (C) a phosphorus acid ester; and (D) a boronated ashless dispersant, the ratio of the mass percent of boron to the mass percent of phosphorus in the composition (B/P) being from 0.07 to 0.42, and the composition having a 100° C. kinematic viscosity of 2.5 to 4.0 mm²/s is described.

A polyamide resin composition comprising a polyamide (X) having a diamine constituent unit which is mainly composed of a m-xylylenediamine unit and a dicarboxylic acid constituent unit which is mainly composed of an adipic acid unit; and specific amounts of a phosphorus acid antioxidant and alkaline component. The polyamide (X) is characterized by a specific range of terminal-group concentration balance and a specific amino-group reaction rate. This composition can simultaneously achieve inhabitation of yellow discoloration and reduction of number of gels or fish eyes.

A phosphorus-acid-group-containing (meth)acrylamide polymer having high electrolytic group density and excellent conductivity is obtained by introducing a phosphorus acid group into a (meth)acrylamide monomer which may be N-substituted, and polymerizing the resultant monomer. This polymer is usable for conductive resins, proton-conductive polymer electrolyte membranes and coating agents.

An internal combustion engine can be cleaned of sludge, deposits, or wear debris, by supplying to lubricated surfaces of said engine a composition having a kinematic viscosity of 1 to 10 mm²/s at 100° C. comprising oil having at least 15% aromatics by ASTM D-2007; at least 2.5 weight percent of a nitrogen-containing dispersant; at least 0.6 weight percent of an overbased metal detergent; and at least about 0.5 weight percent of a metal salt of a phosphorus acid, circulating the composition through the engine and removing the composition from the engine.

An improved process for bisphosphonylation of acids, substituted acids to obtain compounds with the formula

using phosphorus trihalide, phosphorus acid, in presence of phenolic compounds as diluent/solvent.