188 results about "Phosphate anion" patented technology

A crosslinked polymer for binding phosphate anions is provided, the polymer comprises a polyvalent cation attached to the polymer through at least one covalently bound anionic functional group, and wherein the anionic group is selected from a group consisting of sulfonate, carboxylate, phosphonate and mixtures thereof and wherein the cation is selected from a group consisting of aluminum, calcium, magnesium, molybdenum, manganese, titanium, barium, strontium, zirconium, vanadium, scandium, lanthanum, yttrium, cerium, nickel, iron, copper, cobalt, chromium, zinc and mixtures thereof.

The invention provides a titanium dioxide / strontium and fluorine-containing hydroxyapatite bioactive nano-composite coating as well as a preparation method and an application thereof. The method comprises the following steps: firstly preparing an electrolyte containing calcium ions, strontium ions, fluorine ions and phosphate anions; and then by taking titanium or a titanium alloy as an anode and stainless steel as a cathode, directly preparing the titanium dioxide / strontium and fluorine-containing hydroxyapatite bioactive nano-composite coating on the surface of a titanium or titanium alloy substrate by virtue of a micro-arc oxidation technology. The coating consists of an inner layer combined on the surface of the substrate and a surface layer combined on the surface of the inner layer, wherein the inner layer is a titanium dioxide layer in a form of a nano crystal and the surface layer is a nano-particle strontium and fluorine-containing hydroxyapatite layer. No non-continuous interfaces are available between the coating and the substrate and the coating has high combining strength and structural stable performance; the coating is relatively small in solubility in a simulated body fluid, so that the coating is effectively implanted and used; and the nano-particle strontium and fluorine-containing hydroxyapatite layer in the surface layer can remarkably promote the osteogenic function of the cells to form new bones and inhibit bacterial adhesion and growth.

The invention discloses a hydroxyapatite / chitosan composite coating and a preparation method thereof. The preparation process mainly comprises the following steps of: (1) preparing liquor containing chitosan, calcium ions and phosphate anions; (2) based on biomedical metal as a matrix, preparing a chitosan coating containing calcium ions and phosphate anions by a dipping-pulling method; and (3) converting the chitosan coating containing calcium ions and phosphate anions to the hydroxyapatite / chitosan composite coating by a biomineralization method. The coating prepared by the invention adequately combines advantages of the biomedical metal matrix, hydroxyapatite and chitosan. With the biomedical metal matrix, the coating has stronger mechanical property. With a porous structured formed by sequentially arranging sheet hydroxyapatite, the coating has good biocompatibility. Chitosan organic matters are introduced, so that not only is the binding capacity of hydroxyapatite and the metal matrix remarkably improved, but also the coating material is endowed with the antibacterial performance.

The invention provides a phosphorus removing method from waste water. The method includes following steps: providing a solution containing phosphate anion; mixing a solution containing ferrous ions and the solution containing the phosphate ion and performing fluidized bed crystallization to obtian a ferrous phosphate precipitation, wherein a pH value of the fluidized bed crystallization is 5-6 and a molar ratio of the ferrous ion to the phosphate ion is 1.5-2.5 and a volume ratio of the solution containing ferrous ions to the solution containing the phosphate ion is 10-20; and removing the ferrous phosphate precipitation. The invention also provides a preparation method of ferrous phosphate. By means of the phosphorus removing method, damage of the waste water to environment can be reduced and meanwhile economic benefit is achieved. By means of the preparation method of the ferrous phosphate, the ferrous phosphate being low in water content, being high in purity and being high in crystallization rate can be prepared.

Storage-stable organic passivate formulations that are essentially chromium-free are provided comprising non-ionic or non-ionically stabilized organic film forming resin; at least one complex fluoride and optionally, dissolved phosphate anions, at least one component comprising vanadium, at least one inorganic oxide in dispersed form; and at least one wax in dispersed form.

Disclosed are methods for reducing the staining of dentifrice composition containing stannous comprising administering to a subject the dentifrice composition. The dentifrice composition is a dual phase dentifrice and is contained in physically separated compartments of a dentifrice dispenser. The first dentifrice composition comprises an effective amount of one or more linear polyphosphates having an average chain length of about 4 or more and has a total water content of up to about 20%. The second dentifrice composition comprises an effective amount of stannous ions. The molar ratio of polyphosphate anion to stannous ion is from about 0.2:1 to about 5:1 and the efficacy of the stannous ion in the dentifrice is not reduced by the polyphosphate. The dentifrice composition may alternatively be a single phase dentifrice. The single phase dentifrice will comprise an effective amount of one or more linear polyphosphates having an average chain length of about 4 or more and an effective amount of a stannous ion. The single phase dentifrice has a total water content of up to about 20%, the stannous ion is not delivered from stannous fluoride, a molar ratio of polyphosphate anion to stannous ion is from about 0.2:1 to about 5:1, and the efficacy of the stannous ion in the dentifrice is not reduced by the polyphosphate.

Anticorrosive coating compositions comprise a binding polymer and an amorphous aluminum phosphate corrosion inhibiting pigment dispersed therein. The coating composition comprises 1 to 25 percent by weight aluminum phosphate. The binding polymer can include solvent-borne polymers, water-borne polymers, solventless polymers, and combinations thereof. The aluminum phosphate is made by combining an aluminum source with a phosphorous source to form an amorphous aluminum phosphate solid condensate. The coating composition is specially engineered to provide a controlled delivery of phosphate anions of 50 to 500 ppm, and has a total solubles content of less than 1500 ppm. The amorphous aluminum phosphate is preferably free of alkali metals and alkaline earth metals. The amorphous aluminum phosphate has an oil absorption of less than 50, and a surface area of less than about 20 m2 / g, The coating composition has a water adsorption potential of up to 25% by weight water.

The present invention relates to a method for preparing a lithium vanadium phosphate material comprising forming a aqueous slurry (in which some of the components are at least partially dissolved) comprising a polymeric material, an acidic phosphate anion source, a lithium compound, V2O5 and a source of carbon; wet blending said slurry, spray drying said slurry to form a precursor composition; and heating said precursor composition to produce a lithium vanadium phosphate. In one embodiment the present invention relates to a method for preparing a lithium vanadium phosphate which comprises reacting vanadium pentoxide (V2O5) with phosphoric acid (H3PO4) to form a partially dissolved slurry; then mixing with an aqueous solution containing lithium hydroxide; adding a polymeric material and a source of carbon to form a slurry; wet blending said slurry; spray drying said slurry to form a precursor composition; and heating said precursor composition for a time and at a temperature sufficient to produce a lithium vanadium phosphate compound. In an alternative embodiment the present invention relates to a method for preparing a lithium vanadium phosphate which comprises preparing an aqueous solution of lithium hydroxide; partially dissolving vanadium pentoxide in said aqueous solution; adding phosphoric acid to the aqueous solution; adding a polymeric material and a source of carbon to the solution containing vanadium pentoxide to form a slurry; spray drying said slurry to form a precursor composition; and heating said precursor composition for a time and at a temperature sufficient to form a lithium vanadium phosphate. The electrochemically active lithium vanadium phosphate so produced is useful in making electrodes and batteries.

A developing member that can prevent bleed under a high temperature and high humidity and prevent charge up of the developing member under a low temperature and low humidity is provided. A developing member including an electro-conductive substrate and an elastic layer disposed on the electro-conductive substrate; the elastic layer including a binder resin, an anion and a particle containing a metal, oxide; the binder resin including a resin having a cationic organic group in the polymer chain; the anion being at least one selected from the group consisting of a fluorinated sulfonate anion, a fluorinated carboxylate anion, a fluorinated sulfonylimide anion, a fluorinated sulfonylmethide anion, a dicyanamide anion, a fluorinated alkylfluoroborate anion, a fluorinated phosphate anion, a fluorinated antimonate anion, a fluorinated arsenate anion and a bis(oxalate)borate anion; the metal oxide including an oxide of a metal having an electronegativity of 11.0 or less as a metal ion.

The invention discloses a method for producing cyclic adenosine monophosphate by using whole cell biocatalysis, which is characterized in that the method comprises the following steps: using polyhydroxy organic reagents for protecting the activity of enzymes; using cyclic adenosine monophosphate precursors and phosphate anions as substrates; using glucose as energy suppliers; adding metal ions; and using permeable microbial bacterial strains for producing the cyclic adenosine monophosphate through whole cell biocatalysis. The invention uses the metal ion combination for regulating and controlling the metabolic flow rate for improving the energy self coupling efficiency, the organic reagents are added for protecting the thalli and the activity of enzymes, the permeable microbial bacterial strains are used for preparing the cyclic adenosine monophosphate, the synthesis time is shortened, and products can be accumulated outside the cells, so the cost of the subsequent separation can be saved, and the operation step can be simplified.

The invention discloses a method for synthesis of a benzimidazole derivative phosphate anion fluorescence probe and an application method thereof, and relates to the field of synthesis and application of the fluorescence probe. The synthesis of the benzimidazole derivative phosphate anion fluorescence probe can solve the problem that the florescence probes used for detecting PO43- are very scarce in kinds, that the identification of PO43- can be easily influenced by H2PO4- and HPO42-, and that the florescence probes can not directly carry out identification independently. The Benzimidazole derivative phosphate anion fluorescence probe is 1,4 phenyl double (carbamoyl methyl) N e alkylbenzimidazole ammonium chloride], which is obtained under quaterisation between Dichloro acetyl para-phenylene diamine and N-E alkyl benzene and imidazole. The fluorescence probe dissolves in HEPES buffered solution prepared by deionized water, and then test change in the absorbance value and fluorescence intensity to adjust the existence of PO43-. The Benzimidazole derivative phosphate anion fluorescence probe can be used to directly detect the po43- in water and blood.

The invention discloses a method for extracting exosomes and exosome proteins from human body fluid or culture medium. The method for extracting exosomes and exosome proteins provided by the inventionincludes: extraction materials are added to to-be-extracted solution containing the exosomes, and carrying out extraction to obtain the exosomes; the extraction materials are metallic oxides or function materials modified with the metallic oxides; the metallic oxides and phosphate anions can occur double coordination; and the to-be-extracted solution is body fluid from the human body, diluent ofthe body fluid or cell culture products. Experiment shows that the exosome extraction method of the invention can realize highly-efficient extraction of the exosomes from the human body fluid or the cell culture medium, the extraction time is short, the purity of the obtained exosomes is high, complete exosomes can be obtained by eluent elution, and the used extraction materials can be recycled and reused; in addition, extracting the exosome proteins can reveal that the obtained exosome proteins are more in types and more closely related to exosome functions.