Abstract: A material for purification of a semiconductor polishing slurry that without changing of pH value, is capable of efficiently purifying a polishing slurry to thereby not only prevent metal contamination of a polished object as effectively as possible but also achieve recycling of a polishing slurry without any problem; a relevant module for purification of a semiconductor polishing slurry; and a process for purifying a semiconductor polishing slurry with the use thereof. In particular, a material for purification of a semiconductor polishing slurry characterized in that it comprises a fibrous substrate having a functional group capable of forming a metal chelate or such a functional group together with hydroxyl fixed onto at least the surface thereof. This material for purification of a semiconductor polishing slurry is, for example, used in such a manner that it is inserted in a container fitted with polishing slurry inflow port and outflow port while ensuring passage of polishing slurry flow.

Abstract: The present invention provides a novel aluminate phosphor capable of emitting blue fluorescence having high color purity and high brightness in a certain wavelength range by ultraviolet ray excitation and electron beam excitation, and a useful production method thereof. The method for producing an aluminate phosphor according to the present invention is characterized in comprising a step of heating an aluminate represented by a composition formula: 7(Sr1-xEux)O.yAl2O3 [wherein, x and y satisfy 0<x?0.5 and 1?y?36] in a state of being in contact with magnesium oxide in a reducing atmosphere.

Abstract: A novel UV-excited aluminate phosphor having a homogeneous composition and capable of emitting a strong fluorescence has been developed. A phosphor of the present invention comprises aluminate and other metal components which are combined or doped to aluminate, and is represented by a general composition formula: 7(Sr1-xEux)O.yAl2O3, wherein 0<x?0.5 and 1?y?36. A method for efficiently producing the phosphor of the present invention is also disclosed.

Abstract: A material for purification of a semiconductor polishing slurry that without changing of pH value, is capable of efficiently purifying a polishing slurry to thereby not only prevent metal contamination of a polished object as effectively as possible but also achieve recycling of a polishing slurry without any problem; a relevant module for purification of a semiconductor polishing slurry; and a process for purifying a semiconductor polishing slurry with the use thereof. In particular, a material for purification of a semiconductor polishing slurry characterized in that it comprises a fibrous substrate having a functional group capable of forming a metal chelate or such a functional group together with hydroxyl fixed onto at least the surface thereof. This material for purification of a semiconductor polishing slurry is, for example, used in such a manner that it is inserted in a container fitted with polishing slurry inflow port and outflow port while ensuring passage of polishing slurry flow.

Abstract: A process for producing a metal oxide phosphor includes a step of firing a powder containing an organic metal chelate complex including a plurality of metals constituting the metal oxide at a uniform composition, whereby produced is a metal oxide phosphor having substantially spherical shape with substantially uniform particle size and excellent luminance properties.

Abstract: A fiber capable of forming a metal chelate and a process for producing the same are disclosed, wherein the fiber is characterized in that at least one metal chelate-forming compound selected from the group consisting of aminodicarboxylic acids, aminocarboxylic acids, thiocarboxylic acids and phosphoric acid, which are reactive with a glycidyl group, is bonded to a molecule of a natural fiber or regenerated fiber through a crosslinkable compound having a reactive double bond and a glycidyl group in its molecule. There are also disclosed a method of capturing metal ions using the fiber and a metal chelate fiber which can effectively make use of the characteristics of the metals and can be easily discarded or incinerated.

Abstract: A chelate-forming filter which comprises a filter medium made of natural, regenerated, or synthetic fibers wherein the fiber molecules have, incorporated therein, chelate-forming functional groups represented by general formula (1) [wherein G represents a residue of a chain sugar alcohol or of a polyhydric alcohol; and R represents hydrogen, (lower) alkyl, or -G (wherein G has the same meaning as the above G, and the two G's may be the same or different)] or (3) (wherein R1, R2, and R3 each represents lower alkylene; and n is an integer of 1 to 4).

Abstract: A fiber capable of forming a metal chelate and a process for producing the same are disclosed, wherein the fiber is characterized in that at least one metal chelate-forming compound selected from the group consisting of aminocarboxylic acid, aminocarboxylic acid, thiocarboxylic acid and phosphoric acid, which are reactive with a glycidyl group, is bonded to a molecule of a synthetic fiber through a crosslinkable compound having a reactive double bond and a glycidyl group in its molecule. The chelate-forming fiber is excellent in capturing harmful heavy metal ions and can be easily produced in a simple and safe way at a low cost.

Abstract: A process for forming a thin metal oxide film is disclosed that comprises molding an amorphous powder of organic metal chelate complexes to obtain a target. The process also includes subjecting the target to a PVD process that forms the thin metal oxide.

Abstract: Metallic materials are mixed with an organic chelating agent so as to result in a given metal composition to prepare a transparent aqueous solution of organic metal chelate complexes. The aqueous solution is spray-dried to obtain an amorphous powder containing the amorphous organic metal chelate complexes. The powder is sintered to produce a metal oxide. Alternatively, the powder containing the complexes is molded into a tablet to obtain a target, which is used to form a thin metal oxide film.

Abstract: A process for producing a metal oxide phosphor includes a step of firing a powder containing an organic metal chelate complex including a plurality of metals constituting the metal oxide at a uniform composition, whereby produced is a metal oxide phosphor having substantially spherical shape with substantially uniform particle size and excellent luminance properties.

Abstract: A process for preparing a target for use in production of a thin metal oxide film that comprises molding an amorphous powder of organic metal chelate complexes to obtain the target. The process also includes mixing metallic materials with an organic chelating agent so as to give a predetermined metal composition to prepare a transparent aqueous solution of organic metal chelate complexes. The process also includes spray-drying the aqueous solution to obtain an amorphous powder of the organic metal chelate complexes.

Abstract: Diammonium ruthenium diethylenetriaminepentaacetate represented by formula (1) or hydrate thereof, which are water-soluble and excellent in handling and exhibit such high stability both in the air and in an aqueous solution as to withstand long-term storage. These novel compounds are useful as the catalyst for the synthesis of ammonia, the hydrogenation catalyst for carbonyl compounds or aromatic compounds, the raw material for the production of ruthenium-base metal oxide ceramics, and so on.

Abstract: An amino acid-N,N-diacetic acid (AADA) or its salt with an equivalent or less of an alkali metal is produced by reducing, through electrodialysis, alkali metal ions from an aqueous solution of the alkali metal salt of an AADA. By this configuration, an AADA salt can be produced in a much higher yield than conventional equivalents without requiring a regeneration operation of a resin as in the use of an ion exchange resin or without requiring crystallization-separation of crystals of the AADA salt as in the addition of an organic solvent. A salt of an amino acid-N,N-diacetic acid is also produced by reacting an AADA with any of metal oxides, metal hydroxides, metal carbonates, metal hydrogencarbonates, ammonium hydroxide, ammonium carbonate, ammonium hydrogencarbonate or organic amine compounds. By this configuration, a metal salt, aromonium salt or organic amine salt of an AADA can be produced with efficiency without the formation of by-products.

Abstract: An amino acid-N,N-diacetic acid (AADA) or its salt with an equivalent or less of an alkali metal is produced by reducing, through electrodialysis, alkali metal ions from an aqueous solution of the alkali metal salt of an AADA. By this configuration, an AADA salt can be produced in a much higher yield than conventional equivalents without requiring a regeneration operation of a resin as in the use of an ion exchange resin or without requiring crystallization-separation of crystals of the AADA salt as in the addition of an organic solvent.

Abstract: An amino acid-N,N-diacetic acid (AADA) or its salt with an equivalent or less of an alkali metal is produced by reducing, through electrodialysis, alkali metal ions from an aqueous solution of the alkali metal salt of an AADA. By this configuration, an AADA salt can be produced in a much higher yield than conventional equivalents without requiring a regeneration operation of a resin as in the use of an ion exchange resin or without requiring crystallization-separation of crystals of the AADA salt as in the addition of an organic solvent. A salt of an amino acid-N,N-diacetic acid is also produced by reacting an AADA with any of metal oxides, metal hydroxides, metal carbonates, metal hydrogencarbonates, ammonium hydroxide, ammonium carbonate, ammonium hydrogencarbonate or organic amine compounds. By this configuration, a metal salt, ammonium salt or organic amine salt of an AADA can be produced with efficiency without the formation of by-products.

Abstract: A chelate-forming fiber which has, in a fiber molecule, a group having an amino group and at least two hydroxyl groups bonded to carbon (preferably a group represented by the formula (1) described below), and has a capability of forming a chelate with metalloid elements including boron and germanium and compounds thereof, and which can be easily incinerated and can be prepared in a simple and safe manner at low cost; and a process for preparing the same; and a method for capturing metalloids or compounds thereof using the chelate-forming fiber are disclosed. (wherein G represents a sugar alcohol residue or a polyhydric alcohol residue, and R represents a hydrogen atom, a (lower) alkyl group, or G (G is as defined above and may be a group identical with or different from the above G).

Abstract: A high-concentration liquid detergent composition, which does not have strong alkalinity, which has excellent compatibility even if the surfactant concentration is increased, and which is free of white turbidity, comprising (A) one or more surfactants selected from a nonionic surfactant and an anionic surfactant, (B) one or more builders selected from an amine salt and an alkali metal-amine mixed salt of aminopolycarboxylic acid chelating agent, and (C) one or more solubilizing agents selected from alcohols, with component (A) being present in a concentration of 20 wt % or more.

Abstract: The present invention provides a novel fibrous chelate-forming material to which a capability of forming a chelate with metal is imparted by introducing a specific acyl group represented by the following general formula [1] or [2], and also discloses a novel process for producing a chelate-forming fiber, a process for sequestering with the same, and a filter capable of simultaneously removing impurities and metal ions in a fluid is imparted using the chelate-forming fiber. [wherein each symbol is as defined in the specification.