296 results about "Bismuth compound" patented technology

Processes are provided for producing bismuth-containing oxide thin films by atomic layer deposition. In preferred embodiments an organic bismuth compound having at least one monodentate alkoxide ligand is used as a bismuth source material. Bismuth-containing oxide thin films can be used, for example, as ferroelectric or dielectric materials in integrated circuits and as superconductor materials.

The preparation process of visible light responding photocatalytic film layer features that the core or substrate to be coated is set inside water solution with water soluble inorganic or organic Bi compound and V compound, additive, complexing agent, NaOH, KOH and HNO3 while ultrasonically stirring, and after processing for 1-360 min, the core or substrate with obtained visible light responding photocatalytic bismuth vanadate film layer in the surface is taken out and washed with water or organic solvent. Thus obtained material with loaded bismuth vanadate photocatalyst has powerful sterilizing, deterging and deodorizing functions.

A bismuth compound composite having a polymer matrix and a bismuth compound therein. The bismuth compound may be bismuth oxide, or other bismuth compounds. The polymer may be any of a very wide range of materials or combinations thereof. Binder, secondary fillers or other third components may be added. By means of use of various bismuth compounds, polymers, and third components, the physical, radiological and electrical properties of the finished products may be tailored to achieve desired properties. In addition, the invention teaches that radiation shielding, insulators, and combined radiation shield/insulators may be fashioned from the composite. A wide range of production methods may be employed, including but not limited to liquid resin casting.

The present invention provides grease which prevents frictional wear on a lubricating surface and excellent in performance of preventing occurrence of flaking, heat-resistant performance, and long-term durability, a grease-enclosed rolling bearing, a constant velocity joint, and rolling parts. Grease is composed of base grease, essentially containing a thickener, to which at least 0.01 to 15 wt % of one substance selected from among bismuth and inorganic bismuth compounds is added. The inorganic bismuth compounds are at least one inorganic bismuth selected from among bismuth sulfate, bismuth trioxide, bismuth carbonate, and sodium bismuthate. The above-described grease is used for the rolling bearing and the constant velocity joint. A coating film of at least one substance selected from among the bismuth and the inorganic bismuth is formed on surfaces of the rolling parts.

A cationic electrodeposition coating composition containing (A) an acrylic resin obtained by subjecting a mixture of 10 to 60% by weight of a hydroxyl group-containing acrylic monomer (a), 5 to 35% by weight of an amino group-containing acrylic monomer (b), 5 to 55% by weight of an aromatic vinyl monomer (c) and optionally another acrylic monomer (d) to a radical copolymerization reaction; (B) a hydroxyl group-containing acrylic resin-modified epoxy resin obtained by reacting 65 to 95% by weight of a resin composition consisting of 10 to 90% by weight of an epoxy resin (e) and 90 to 10% by weight of a hydroxyl group-containing acrylic resin (f) with 5 to 35% by weight of an amine compound (g); (C) a aliphatic and/or alicyclic blocked polyisocyanate compound, and (D) a bismuth compound component, a mixing ratio of the components (A), (B) and (C) being such that the component (A) is in the range of 40 to 90% by weight, the component (B) is in the range of 5 to 55% by weight and the component (C) is in the range of 5 to 40% by weight based on a total weight of solid contents in the components (A), (B) and (C), the component (D) being contained in such an amount as to be in the range of 0.01 to 10 parts by weight as a bismuth content per 100 parts by weight of a resin solid content in the electrodeposition coating composition.

This invention relates to cationic electro-coating composition which comprises blending which an aqueous dispersion or an aqueous dispersion paste which contains an organic acid-modified bismuth compound in a non-water-soluble state, and which is obtained by mixing and grinding a bismuth compound and an organic acid in an aqueous medium. Said cationic electro-coating composition, although containing no lead compounds, is capable of forming an electrocoated film which is excellent in corrosion resistance, appearance, etc.

Compositions for pharmaceutical and other uses comprising clear aqueous solutions of bile acids which do not form any detectable precipitates over selected ranges of pH values of the aqueous solution and methods of making such solutions. The compositions of the invention comprise water; a bile acid in the form of a bile acid, bile acid salt, or a bile acid conjugated with an amine by an amide linkage; and either or both an aqueous soluble starch conversion product and an aqueous soluble non-starch polysaccharide. The composition remains in solution without forming a precipitate over a range of pH values and, according to one embodiment, remains in solution for all pH values obtainable in an aqueous system. The composition, according to some embodiments, may further contain a pharmaceutical compound in a pharmaceutically effective amount. Non-limiting examples of pharmaceutical compounds include insulin, heparin, bismuth compounds, amantadine and rimantadine.

The invention relates to a preparing method of a simple substance bismuth/bismuth compound nanocomposite with oxygen vacancies. The method includes the following steps that a certain amount of bismuth nitrate pentahydrate and precursors are added into ethylene glycol, centrifugal washing is performed on obtained products after a solvent thermal condition reaction so that residual impurities can be removed, drying and cooling are performed, and then the simple substance bismuth/bismuth compound nanocomposite with the oxygen vacancies can be obtained. The method has the advantages that firstly, the method is universally applicable; secondly, the ethylene glycol serves as a solvent and a reducing agent, the oxygen vacancies and simple substance bismuth are produced through weak reducibility of the ethylene glycol, other reducing agents do not need to be added, and the defect that control is difficult because other reducing agents need to be added is avoided; thirdly, the simple substance bismuth/bismuth compound nanocomposite with the oxygen vacancies can be synthesized and is uniform in size; fourthly, a solvent thermal method is adopted, the synthesizing technology is simple, production cost is effectively reduced, and large-scale production of products can be achieved.

The invention discloses a preparation method of BiOBr/ZnO nano photocatalyst powder, belonging to the field of nano photocatalyst preparation. The method is characterized by comprising the steps of adding two bromine compounds CTAB (cetyl trimethyl ammonium bromide) and potassium bromide or sodium bromide at a proper proportion and a zinc-containing compound into an ethanol solvent, adding a bismuth-containing compound, and uniformly mixing; transferring the solution into a Teflon high-pressure reaction kettle, and performing a solvothermal reaction at certain temperature to generate precipitates; washing the precipitates with water and ethanol, and drying at 80 DEG C to obtain novel efficient BiOBr/ZnO nano photocatalyst powder. The method disclosed by the invention is quick, simple, convenient and high in operability, and the prepared BiOBr/ZnO heterojunction nano photocatalyst powder has perfect photocatalytic degradation efficiency on organic pollutants as well as good reusability.

The use of bismuth-compounds in an extreme pressure grease lubricant composition for rolling bearing applications can extend the useful service life of rolling bearings. The bismuth can be used as an additive, preferably an EP additive, or as a soap or non-soap thickener. The invention further relates to a method for preparing an extreme pressure lubricant composition in which a bismuth containing soap or thickener is mixed with an oil and optionally one or more EP- or other additives.

The invention relates to a colloid bismuth pectin compound and a quality control method of pharmaceutical compositions of the colloid bismuth pectin compound, and specifically provides a colloid bismuth pectin compound, new quality control indexes of pharmaceutical compositions of the colloid bismuth pectin compound and a detection method of the colloid bismuth pectin compound and the pharmaceutical compositions of the colloid bismuth. In the prior art, the quality of products having poor efficacy can not be well controlled because the efficacy-related indexes are not controlled strictly in the existing quality control methods of colloid bismuth pectin and pharmaceuticals thereof. Based on the existing quality control methods of colloid bismuth pectin and pharmaceuticals thereof, the following detection items and indexes are added: intrinsic viscosity, gel property, uniformity and galacturonic acid content. The invention can effectively ensure clinical efficacy of products, make the product quality standards more scientific, reasonable and controllable, and has great significance in quality control of the colloid bismuth pectin and the pharmaceutical preparation of colloid bismuth pectin.

The invention provides layered perovskite structural ceramic and a preparation method thereof. The preparation method includes mixing well titanate compounds, bismuth compounds, strontium compounds, iron compounds, cobalt compounds and complexing agent in solvent, heating, drying and combusting to obtain powder, and presintering to obtain powder; performing the powder, and performing hot-pressing sintering to obtain the structural ceramic in in a formula (I). Compared with ceramics prepared in the prior art by solid phase sintering process, the structural ceramic in the formula (I) is prepared by solution process and hot pressing sintering. The preparation method has the advantages that less volatile low-valence strontium ions are introduced, increased leakage current due to volatilization of the strontium ions is improved, and ferroelectric properties are improved; the raw materials are evenly spread by the solution process, the power is even in component and has high reactivity, and Fe-Co ions are coupled fully; and the materials processed by hot pressing sintering are high in density and orientation, and the layered perovskite structural material can be obtained, namely Bi(n+1-x)SrxF3(n-3)/2Co(n-3)/2Ti3O3(n+1) (I).

The present invention relates to a one-component polyurethane composition comprising at least one polyurethane prepolymer having terminal isocyanate groups which is prepared from at least one polyisocyanate and at least one polyol, and to at least one catalyst system which is obtainable from at least one bismuth compound and at least one aromatic nitrogen compound. The invention additionally relates to a use of this polyurethane composition as an adhesive, sealant, coating or lining. Finally, catalysts for polyurethane compositions are disclosed which represent coordination compounds between bismuth and at least one aromatic nitrogen compound.

The invention discloses a preparation method for a visible-light responsible BiVO4 catalyst. The method comprises: taking a bismuth compound and a vanadium compound respectively as a bismuth source and a vanadium source, taking mixtures of water and an organic alcohol with different ratios as reaction solvents, and performing a hydro-thermal synthesis reaction, so as to obtain a catalytic material in the forms of a nanometer small particle, a nanometer ellipsoid, a flower-shaped structure or a branch structure. The visible-light responsible catalyst containing BiVO4 with different morphologies helps to greatly improve the photocatalysis degradation efficiency when being applied to the field of photocatalytic degradation of pollutants. The preparation method has the advantages of simple operation, mild reaction conditions, low equipment cost, relatively strong visible-light absorption, good visible-light catalytic performance and the like.

The invention provides a method for preparing a sheet-shaped bismuth oxyiodide (BiOI) nano-film electrode, and belongs to the technical field of film preparation. The method comprises the following steps of: dissolving a bismuth compound in water to obtain solution of bismuth ions; dissolving an iodide in the water to obtain solution of iodide ions; immersing a conductive glass which is plated with a titanium dioxide blocking layer into the two solution sequentially, washing the conductive glass with water after reaction; and then repeating the process for 15 to 90 times, washing the conductive glass with the water and drying the conductive glass to obtain the sheet-shaped BiOI nano-film electrode. The preparation method is simple; the prepared bismuthyl iodide crystals are distributed on the conductive glass uniformly; and the product can be used for producing a solar battery.

The invention provides a low self-discharge ferrous electrode material. The ferrous electrode material is characterized by consisting of an active substance and an additive, wherein the composition ofthe active substance is ferrum or ferrous compounds including one or more of Fe3O4, Fe(OH)2, Fe(OH)3, Fe2O3, reduced ferrous powder and carbonyl ferrous powder; and the additive comprises: 1) 0.02 to0.15 percent of indium or indium compounds including one or more of In, In2O3, In2(SO4)3, In(OH)3, InCl3 and the like; 2) 2 to 8 percent of stannum or stannum compounds including one or more of Sn, SnO, SnO2, SnCl2, SnCl4 and stannate; 3) 1 to 7 percent of bismuth or bismuth compounds including one or more Bi, Bi2O3, Bi(NO3)3 and the like; and 4) 5 to 10 percent of graphite powder. The ferrous electrode material has the advantages that: 1) no toxic heavy metals (such as Hg, Cd, Pb and the like) are added, so the electrode material is an environment-friendly electrode material 2) the cost foran electrode is quite low; and 3) the self-discharge rate of the electrode is less than 20 percent at a temperature of 20 DEG C after 28 days. The material is used for manufacturing environment-friendly ferrum-nickel storage batteries.

The invention discloses X-ray developing calcium phosphate cement and a preparation method and application thereof. The method comprises the following steps: (1) adding a developer in calcium phosphate cement powder and carrying out dry mixing or wet mixing by adding organic dispersant for 0.5-5h, drying and sifting out to obtain the X-ray developing calcium phosphate cement powder; (2) evenly mixing hardening liquid and the X-ray developing calcium phosphate cement powder based on liquid-solid ratio of 0.3-0.6mL/g to obtain X-ray developing calcium phosphate cement paste. In the method, bismuth compound and iodide are successfully applied to the calcium phosphate cement as the developers for the first time, thus remarkably enhancing the developing property of the calcium phosphate cement while keeping intrinsic curing characteristic of the calcium phosphate cement, effectively improving the success ratios of operations and broadening the application prospect of the calcium phosphate cement.

An electroless palladium plating liquid, with excellent bath stability, that can provide a film with excellent corrosion resistance, solder bondability, and wire bondability is provided. The invention is an electroless palladium plating liquid, comprising: a water soluble palladium compound; at least one of ammonia, an amine compound, an aminocarboxylic acid compound, and carboxylic acid as a complexing agent; and bismuth or a bismuth compound as a stabilizer. Preferably the electroless palladium plating liquid further comprises at least one of hypophosphorous acid, phosphorous acid, formic acid, acetic acid, hydrazine, a boron hydride compound, an amine borane compound, and salts thereof as a reducing agent.

A grease composition which can effectively prevent the flaking on, e.g., rolling/sliding surfaces mainly caused by hydrogen embrittlement; a prelubricated bearing containing the grease composition enclosed therein; and a rotation-transmitting apparatus of the built-in one-way clutch type which contains the grease composition enclosed in the sliding part. The grease composition is obtained by incorporating an additive into a base grease comprising a base oil and a thickener. The grease composition can prevent hydrogen embrittlement and resultant flaking from occurring on the frictional/wearing surfaces of a sliding part or on a ferrous metal surface newly exposed by wearing. The additive comprises a bismuth additive or a magnesium additive, the bismuth additive being at least one member selected among inorganic bismuth compounds and organobismuth compounds containing no sulfur ingredient and the magnesium additive being at least one member selected among inorganic magnesium compounds and organomagnesium compounds.

The invention discloses a preparation method of a biological dressing containing nano silver, zinc and bismuth, which comprises the steps of: synthesizing chitosan and/or a nano silver, zinc and bismuth compound as a chitosan derivative by using a solid phase synthesis method; dissolving into a solution; adding a proper quantity of glycerol, collagen and the like; and obtaining a film dressing by adopting a curtain coating film-forming method or obtaining a sponge dressing by using a freezing drying method. The biological dressing has the functions and the advantages of nano silver, zinc and bismuth, and chitosan or chitosan derivative, and has the characteristics of better contact bacteriostasis, wide antimicrobial spectrum, durable action time, wound repairmen, ulcer curing and the like.