6961 results about "O-Phosphoric Acid" patented technology

A system is disclosed for hydrogen generation based on hydrolysis of solid chemical hydrides with the capability of controlled startup and stop characteristics wherein regulation of acid concentration, acid feed rate, or a combination of both control the rate of hydrogen generation. The system comprises a first chamber for storing a solid chemical hydride and a second chamber for storing an acidic reagent. The solid chemical hydride is a solid metal borohydride having the general formula MBH₄, where M is selected from the group consisting of alkali metal cations, alkaline earth metal cations, aluminum cation, zinc cation, and ammonium cation. The acidic reagent may comprise inorganic acids such as the mineral acids hydrochloric acid, sulfuric acid, and phosphoric acid, and organic acids such as acetic acid, formic acid, maleic acid, citric acid, and tartaric acid, or mixtures thereof.

A method for producing a set gypsum-containing product comprising an interlocking matrix of set gypsum wherein said method comprises applying to said set gypsum one or more enhancing materials selected from the group consisting of phosphoric acid; condensed phosphoric acids, each of which comprises 2 or more phosphoric acid units; and salts or ions of condensed phosphates, each of which comprises 2 or more phosphate units, and monobasic salts or monovalent ions of orthophosphates.

The present invention is to provide a process for producing a composite of an aluminum material and a synthetic resin molding that can be produced at a high efficiency and to provide a stable and fast composite that is large in a peel strength and a mechanical strength.

The process for producing a composite according to the present invention is characterized in that an aluminum raw material is oxidized in an electrolytic bath of phosphoric acid or sodium hydride, thereby an anodic oxidation coating provided with innumerable pores 3 having a diameter of 25 nm or more made open in the surface thereof is formed thereon, and a synthetic resin mold 6 is coupled with the anodic oxidation coating 2 in such a condition that the part 6a thereof is intruded in the innumerable pores.

A flame retardant thermoplastic composition comprises: a poly(arylene ether); an impact modifier; a polyolefin; a phosphoric acid salt selected from the group consisting of melamine phosphate, melamine pyrophosphate, melamine orthophosphate, diammonium phosphate, monoammonium phosphate, phosphoric acid amide, melamine polyphosphate, ammonium polyphosphate, polyphosphoric acid amide, and combinations of two or more of the foregoing; a metal hydroxide; and an organic phosphate wherein the amount of phosphoric acid salt by weight is greater than or equal to the amount of organic phosphate by weight. The flame retardant composition is may be used in the production of electrical wires.

Stable catalyst carrier impregnating solutions can be prepared using a component of a Group VIB metal, e.g., molybdenum, at high concentration, a component of a Group VIII metal, e.g., nickel, at low concentration, and a phosphorous component, e.g., phosphoric acid, at low concentration, provided that the Group VIII metal is in a substantially water-insoluble form and a particular sequence of addition of the components is followed, even when a substantially water-insoluble form of the Group VIB component is used. The resulting stabilized impregnating solution can be supplemented with additional Group VIII metal in water-soluble form to achieve increased levels of such metal in the final catalyst. Furthermore, uncalcined catalyst carriers impregnated with stable solution and subsequently shaped, dried and calcined, have unexpectedly improved performance when used in the hydroprocessing of heavy hydrocarbon feedstocks. High conversion can be achieved at reduced levels of sediment, especially in comparison to standard commercial catalysts.

A method of producing metal fibers including melting a mixture of at least a fiber metal and a matrix metal, cooling the mixture to form a bulk matrix comprising at least a fiber phase and a matrix phase and removing at least a substantial portion of the matrix phase from the fiber phase. Additionally, the method may include deforming the bulk matrix. In certain embodiments, the fiber metal may be at least one of niobium, a niobium alloy, tantalum and a tantalum alloy and the matrix metal may be at least one of copper and a copper alloy. The substantial portion of the matrix phase may be removed, in certain embodiments, by dissolving of the matrix phase in a suitable mineral acid, such as, but not limited to, nitric acid, sulfuric acid, hydrochloric acid and phosphoric acid.

An aluminum phosphate or polyphosphate-based pigment product is made by a process comprising contacting phosphoric acid with aluminum sulfate and an alkaline solution to produce an aluminum phosphate based product; and optionally calcining the aluminum phosphate based product at an elevated temperature, wherein the process is substantially free of an organic acid. The aluminum phosphate or polyphosphate-based pigment is amorphous. The amorphous aluminum phosphate or polyphosphate characterized by a bulk density of less than 2.30 grams per cubic centimeter and a phosphorus to aluminum mole ratio of greater than 0.8. The composition is useful in paints and as a substitute for titanium dioxide.

A device for the application of oxygen to promote wound healing and tissue repair. The device includes a portable oxygen generating device (18), which includes a cathode (10), an anode (16), and a phosphoric acid treated ion conducting membrane (14).

An acidic group-containing solid polymer, having an acidic group such as a sulfonic acid group, a phosphoric acid group, and/or a phosphonic acid group, is dissolved in an organic solvent other than methanol. An ionic liquid is added to the solution to prepare a casting liquid. The casting liquid is subjected to casting in a cavity formed by an opening of a frame and a sheet member, each of which is composed of PTFE (fluorine-containing polymer material). Thereafter, the solvent is removed to yeild a proton conductor membrane.

Membranes, for example immersed polymeric ultrafiltration or microfiltration membranes, are cleaned by contacting them with a chemical cleaner comprising one or more of a gluconate, a hydrosulfite, a metabisulfite or an acid, for example phosphoric acid. The membranes may have been exposed to organic or inorganic foulants, some of which may have resulted from pretreatment involving adding coagulants, for example coagulants containing iron or aluminum, to water to be treated. Methods for treating a waste cleaning solution were described.

A flame retardant thermoplastic composition comprising a poly(arylene ether), a block copolymer, a liquid polyolefin, and a flame retardant additive composition. The flame retardant additive composition comprises a metal hydroxide, an organic phosphate, and a phosphoric acid salt selected from the group consisting of melamine phosphate, melamine pyrophosphate, melamine orthophosphate, melem polyphosphate, melam polyphosphate, diammonium phosphate, monoammonium phosphate, phosphoric acid amide, melamine polyphosphate, ammonium polyphosphate, polyphosphoric acid amide, and combinations of two or more of the foregoing. The block copolymer comprises a block that is a controlled distribution copolymer having terminal regions that are rich in alkylene units and a center region that is rich in aryl alkylene units. The flame retardant composition may be used in the production of covered conductors.

The invention discloses a medicament for treating composite water in a hot water boiler. The medicament comprises the following components by mass percent: 0.1-3% of inorganic phosphate, 0.1-2% of organic phosphoric acid and/or organic phosphate, 0.1-4% of component A, 0.1-3% of component B, 0.6-1.0% of organic amine deoxidizer, 0.1-2% of tannin and/or chitosan and the balance of water, wherein the mass percent of the components is 100%, the component A is one or more of an organic antisludging agent, an organic dispersant and an organic dispersible antisludging agent, and the component B is one or more of an organic carboxylic acid corrosion inhibitor, an organic carboxylate corrosion inhibitor and sodium methylene dinaphthalenesulfonate. The invention further discloses a preparation method and a use method of the medicament, the preparation process is clean, and the medicament is low in toxicity for body health and environment in the using process. The medicament is excellent in corrosion resistance and scale inhibition effects and simple and convenient to store and transport, and the corrosion and scale inhibition effects cannot be reduced after the medicament is stored and transported for a long term.

An immersion liquid for a microlithographic projection exposure apparatus is enriched with heavy isotopes. This reduces the chemical reactivity, which leads to an extension of the lifetime of optical elements which come in contact with the immersion liquid. For example, heavy water (D₂O), deuterated sulfuric acid, (D₂SO₄) or deuterated phosphoric acid D₃P¹⁶O₄ may be used. Organic compounds such as perfluoro polyethers, which have been deuterated or enriched with heavy oxygen (¹⁸O), are furthermore suitable.

A resin composition is provided which comprises (A) a saponified ethylene-vinyl acetate copolymer (referred to as EVOH for short) with an ethylene content of 20 to 60 mole percent and a saponification degree of not less than 90 mole percent, and contains therein (B) a boron compound as an essential component, (C) acetic acid as an optional component, and at least one compound selected from among (D) an acetic acid salt and (E) a phosphoric acid compound as an essential component, the contents of the respective additive components per 100 parts by weight of EVOH (A) being as follows:boron compound (B): 0.001 to 1 part by weight on the boron basis;acetic acid (C): 0 to 0.05 part by weight;acetic acid salt (D): 0.001 to 0.05 part by weight on the metal basis; andphosphoric acid compound (E): 0.0005 to 0.05 part by weight on the phosphate radical basis.This resin composition is typically produced by bringing EVOH (A) with a water content of 20 to 80% by weight into contact with an aqueous solution containing the respective additive components mentioned above and then subjecting the thus-treated EVOH to fluidized state drying and then to stationary state drying.

A surface-treated metal material is obtained by forming an inorganic surface-treating layer containing at least Zr, O and F as chief components but without containing phosphoric acid ions on the surfaces of a metal by the cathodic electrolysis or by forming an inorganic surface-treating layer containing at least Zr, O and F as chief components and having an atomic ratio of P and Zr of 0≦P/Zr<0.6 in the uppermost surface on the surfaces of the metal by the cathodic electrolysis at a low cost featuring high productivity, environmental friendliness, scar resistance, adhesion, workability and intimate fitting. By using a metal material obtained by coating the surface-treated metal material with an organic resin and, particularly, with a polyester resin, a metal can or a can lid exhibits excellent adhesion and corrosion resistance even at portions that are worked to a high degree. Further, the can lid exhibits excellent opening performance even after the sterilization by heating.

A method for treating the surfaces of materials to improve wettability and adhesion of subsequently deposited polymer layers is disclosed. Suitable materials for practice of the method include polymeric materials and silicon-containing materials is disclosed. The method involves contacting at least a portion of the surface of the material with an aqueous solution of sulfuric acid or phosphoric acid, followed by rinsing with water. After the acid treatment, the contact angle of the surface decreases, and subsequently deposited polymer coatings easily wet the material's surface and exhibit enhanced adhesion. The method may be used to fabricate useful structures, such as semiconductor structures, optical waveguide structures, and coated articles.

When spherical calcium carbonate is produced by blowing a carbon dioxide gas or a carbon dioxide-containing gas into an aqueous suspension containing calcium hydroxide to react them, after start of the reaction, an aqueous solution or suspension of a water-soluble phosphoric acid compound or a water-soluble salt thereof is added to the reaction mixture when carbonation ratio reaches 2 to 10%, and the reaction is further allowed to continue at a low gas blowing rate of 1.0 NL/minute or lower (step (a)). Subsequently, an aqueous suspension containing calcium hydroxide and an aqueous solution or suspension of a water-soluble phosphoric acid compound or a water-soluble salt thereof are added to the reaction mixture, and a carbon dioxide gas or a carbon dioxide-containing gas is introduced to allow to react and thereby produce spherical calcium carbonate having a mean particle diameter of 10 μm or larger. This production method is performed under high velocity revolution from the start of the reaction to the end of the step (a) This method provides calcite type spherical calcium carbonate showing high brightness and small friction coefficient, and having a shape comparatively close to a true sphere and a mean particle diameter of 10 μm or larger.

An acidic group-containing polymer which has an acidic group such as sulfonic acid group, phosphoric acid group, and phosphonic acid group, and a proton acceptor which has a boiling point at 1 atmosphere higher than 100° C. and which functions as a medium for conducting proton dissociated from the acidic group are retained in pores of a porous member. Preferred examples of the proton acceptor include a salt structure composed of an anion and a cation derived from a basic organic compound, a basic organic compound, and a dissociation-facilitating polymer which facilitates dissociation of proton. Any one of the acidic group-containing polymer and the proton acceptor may be retained first, or both may be retained simultaneously.

Electrically conducting polymer compositions are provided. The compositions comprise homopolymers and copolymers of polythiophene, polypyrrole, polyaniline, and polycyclic heteroaromatics, and combinations of those, in admixture with an organic solvent wettable fluorinated acid polymer. The acid polymers are fluorinated or highly fluorinated and have acidic groups including carboxylic acid groups, sulfonic acid groups, sulfonimide groups, phosphoric acid groups, phosphonic acid groups, and combinations thereof. The compositions may be used in organic electronic devices (OLEDs).

The invention discloses a production method of the patterned sapphire substrate for the nitride epitaxial growth, which comprises the following steps: a silica coating is deposited on the sapphire substrate used for the nitride epitaxial growth; a general photetch technology is utilized to prepare a mask of photetch patterns; the photetch patterns are etched on the silica coating by utilizing the doped liquid of hydrofluoric acid, ammonium fluoride and H2O; with the patterned silica coating as a mask, the sapphire substrate are etched by adopting the doped liquid of sulphuric acid and phosphoric acid in a wet manner so that the patterns are etched on the sapphire substrate; a dilute hydrofluoric acid solution is used for wet etching so as to remove the residual silica coating and clean the sapphire substrate, and then the preparation of the patterned sapphire substrate is completed. The production method has the advantages of low cost, preventing the sapphire substrate from being damaged by dry etching, etc. The patterned sapphire substrate can be used for the epitaxial growth of nitrides with low dislocation density and high crystal weight.

The invention discloses a method for the production of phosphoric acid and the combined production of a-hemihydrate gypsum through a dehydrate-hemihydrate wet phosphoric acid technology. A dehydrate part production technology is characterized in that the reaction tank temperature is 70-80DEG C, the retention time is 1.5-3h, the free sulfate radical concentration is 1-2%, and the produced wet phosphoric acid concentration omega(P2O5) is 35-39%. A hemihydrate part production technology is characterized in that the reaction tank temperature is 86-94DEG C, the retention time is 1-2h, and the mass concentration of free sulfate radicals is 6-8%. Phosphoric acid produced through the hemihydrate technology has a concentration omega(P2O5) of 10-15% and is used as a recycle acid of the dehydrate part, the crystal water content of the combined-production hemihydrate gypsum is 5-7%, the mass percentage of free P2O5 in gypsum is less than 0.4%, and the crystal form of the produced hemihydrate gypsum is a-hemihydrate gypsum. Compared with the dehydrate technology, the method disclosed in the invention improves the phosphoric acid concentration and improves the phosphorus recovery rate to above 98%, and the combined-production a-hemihydrate gypsum can be directly used as a building gypsum product, so energy consumption saving is realized.