Abstract: The present invention provides a filter element and a method for producing the same, which do not generate pollution during waste disposal, can be easily produced, improve the pressure loss and reduce the production cost. The filter element and the method for producing the same are characterized in that ultrahigh molecular weight polyethylene fine powders, which have an average molecular weight of 3,000,000 to 11,000,000 and a bulk specific gravity of 0.15 to 0.29, are the aggregate of primary particles, and are shaped to have voids of 1 to 5 ?m in a part where the primary particles are connected, are filled into the pores on the surface of a filter element base made of an open-cell porous molded body prepared by heating and sintering synthetic resin powders, a non-woven fabric or a felt.

Abstract: A subject for the invention is to provide a low-cost heat-resistant filter element produced from polyethylene particles which is for use in separating and collecting particles from a dust gas, can be continuously used even in a high-temperature environment of about from 70° C. to 130° C., especially from 90° C. to 110° C., is excellent in chemical resistance, and has flexibility and excellent suitability for mass production. Another subject is to provide processes by which the heat-resistant filter element can be produced at a reduced equipment cost while taking care of the environment. In the invention, a coating layer of a fluororesin was formed on a surface of a permeable porous molding obtained from particles of a resin composition containing a polyethylene as a main component of a resin ingredient and from 0.1 to 3 parts by weight of an antioxidant per 100 parts by weight of the resin ingredient by fusion-bonding the particles to one another at the surface thereof.

Abstract: A method for treating a gas characterized in that a low temperature plasma is generated in the presence of a metallic oxide oxidation catalyst, and an apparatus for treating a gas characterized by containing a low temperature plasma-generating unit carrying a metallic oxide oxidation catalyst are disclosed. According to the treating method and the treating apparatus, harmful components (such as carbon monoxide or a volatile organic compound) in a gas to be treated can be efficiently oxidized and rendered harmless, a foul odor may be rendered odorless, and further, microorganisms may be removed from and reduced in the treated gas.

Abstract: A titania film-coated powder comprising a base particle having provided thereon at least one titania film, wherein the base particle is coated with the titania film by suspending the base particle in a buffer solution having a pH of from 7.0 to 12.0 to obtain a suspension, and adding a hydrogen peroxide-ammonia mixture solution containing peroxotitanic acid to the suspension to thereby regulate a titania deposition reaction induced by decomposition of the peroxotitanic acid in the suspension.

Abstract: Silica-calcium carbonate composition particles having the characteristics of both synthetic silica and calcium carbonate are described along with paper having the particles internally filled therein and a method for making the particles. In the carbonation reaction, which typically involves a step of forming calcium carbonate, while agitating a calcium hydroxide slurry, a mixed gas of carbon dioxide and air is introduced thereinto and synthetic silica, such as colloidal silica or the like, is added before the carbonation rate arrives at 95% but after commencement of the carbonation reaction, followed by further introduction of the mixed gas to continue the carbonation reaction and completion of the carbonation reaction at the time when the pH of the slurry reaches 7, thereby providing the composite particles.

Abstract: Titanium dioxide-calcium carbonate composite particles capable of realizing characteristic properties inherent in titanium dioxide such as a high opacity, a process for producing the same, and a complex composition or complex incorporated with the same are provided. The composite particles were prepared by adding titanium dioxide particles having an average particle diameter of 0.1 to 0.5 ?m in a carbonation step, typically a step of introducing a gaseous mixture of carbon dioxide and air into a calcium hydroxide slurry with stirring, to conduct a carbonation, and continuing the reaction till pH of the slurry becomes 7 by continuous introduction of the gaseous mixture. Moreover, by incorporating the formed composite particles, complexes such as coatings and paints for paper making or composite materials such as paper, plastic molded materials, and rubber molded materials are produced.

Abstract: A genuine/counterfeit discrimination method, comprising identifying a combination of at least two of an electric field pattern, a magnetic pattern, an electron beam responsive pattern, and reflection or absorption patterns of visible light, ultraviolet light, and infrared light using an electric field, a magnetic field, an electron beam, visible light, ultraviolet light, or infrared light. A genuine/counterfeit discrimination object, wherein a combination of at least two of an electric field pattern, a magnetic pattern, an electron beam responsive pattern, and reflection or absorption patterns of visible light, ultraviolet light, and infrared light can be identified therein using an electric field, a magnetic field, an electron beam, visible light, ultraviolet light, or infrared light.

Abstract: Provided are film-coated powders, coating compositions and coated materials that give off vivid and deep colors. The film-coated powders have a coating film on the surface of substrate particles, and has spectrophotometric characteristic in that, when the ratio of the length at 400 nm between 380 and 780 nm on measuring the reflection spectrum from the vertical reflection light of the film-coated powder (wavelength definition width L) to the height of the reflectance 100% in the vertical axis (reflectance definition width R), L/R is 5/2, then the ratio of the peak height (H) to the half-value width (W), H/W is at least 1.

Abstract: A consolidated material of coated powders obtained by a method which comprises forming a molding by mutually bonding powder particles having a given property and in which the powder particles can be made to have a desired arrangement or can be arranged in positions giving such a predetermined distance that desired properties are obtainable. The present invention shows a process for producing a consolidated material of coated powders which are mutually consolidated, comprising adhering either powders each comprising a base particle having thereon a coating film having a uniform thickness of 0.01 to 20 ?m or powders each comprising base particles each having thereon plural coating films having a uniform thickness of 0.01 to 5 ?m per film in which at least any adjacent coating films are different in kind, at the coating film or by an adhesive.

Abstract: A white powder characterized by comprising base particles having on the surface thereof at least one coating film comprising a crystallized-particle aggregate which is capable of imparting a white color based on the scattering reflection of light and which comprises crystallized particles and has voids among the crystallized particles; a white powder characterized in that it comprises base particles having on the surface thereof at least one coating film comprising a crystallized-particle aggregate which comprises crystallized particles and has voids among the crystallized particles, and that a white color is imparted thereto based on the scattering reflection of light occurring between the surface of the crystallized particles and the voids; and processes for producing these.

Abstract: A fluorescent or luminous composition, comprising a multilayered film-coated powder having at least two coating films on a base particle, and a fluorescent or luminous substance; the composition, wherein at least one layer of the coating films contains the fluorescent or luminous substance; a genuine/counterfeit discrimination object, in which the fluorescent or luminous composition; and a genuine/counterfeit discrimination method, comprising recognizing fluorescence or luminescence by irradiating, with a light, the genuine/counterfeit discrimination object.

Abstract: Additive pigments having a box-shape spectral distribution are provided. These pigments are characterized in that they are pigment powders which respectively have a high reflectance in the regions corresponding to the three primary colors of light, and comprise three pigments respectively having the three primary colors of light (red, green, and blue), and that when these pigments of the three colors are mixed together, each pigment is subjected to additive color mixing.

Abstract: A magnetic fluid and a process for producing the same are provided. The magnetic fluid is an excellent fluid which mightily and precisely actuates by the action of an external magnetic field so that its viscosity can be significantly increased and be easily and precisely controlled by regulating the external magnetic field applied thereto. The magnetic fluid is also excellent in the unsusceptibility to oxidation and dispersibility of the particles and has a sufficiently wide viscosity range.

Abstract: A highly functional film-coated powder which is produced without using the method based on the hydrolysis of a metal alkoxide and without using a metal alkoxide, which is an expensive compound, or a highly flammable organic solvent and which therefore can be obtained at a low overall product cost without necessitating explosion-proof facilities in the production equipment and while attaining easy temperature and humidity regulation; and a process for producing the same. The film-coated powder comprises a base particle having films on the surface thereof, wherein at least one of the films is formed by reaction of a metal salt in an aqueous solvent having a constant pH. By the technique, the surface of base particle can be evenly coated with a solid phase film while inhibiting particle aggregation without precipitating an independent solid phase in the liquid phase.

Abstract: A medium dispensing apparatus, a stirring and heat-retaining apparatus, and a dispensing method are provided which enable a medium to be surely supplied at an adequate temperature while variation of the dispensation amount of the medium, liquid dripping which produces air bubbles, and pulsated ejection are prevented from occurring, and local gelation of the medium and contamination due to various kinds of bacteria are prevented from occurring.

Abstract: A medium dispensing apparatus, a stirring and heat-retaining apparatus, and a dispensing method are provided which enable a medium to be surely supplied at an adequate temperature while variation of the dispensation amount of the medium, liquid dripping which produces air bubbles, and pulsated ejection are prevented from occurring, and local gelation of the medium and contamination due to various kinds of bacteria are prevented from occurring.

Abstract: For the purpose of efficiently and easily regenerating a sulfuric acid solution having a high concentration and a low impurity content from a metal sulfate-containing waste sulfuric acid solution and waste liquor formed during acid cleaning which are discharged from titanium (IV) oxide-production process carried out according to the sulfuric acid method, titanium present in the metal sulfate-containing waste sulfuric acid solution is removed through a solvent-extraction treatment and then the solution obtained after the solvent-extraction is subjected to a diffusive dialysis treatment.

Abstract: A powder comprising a base particle which has been colored desirably and vividly and having a high light transmittance in the visible region. The powder is a multilayer-coated powder comprising a base particle having thereon a multilayered film comprising at least one thin layer comprising a metal sulfide, a metal fluoride, a metal carbonate or a metal phosphate. This multilayered film reflects or absorbs the light having a specific wavelength according to the thickness thereof, the sequence of layer superposition, etc.

Abstract: In producing a multilayer-coated powder by coating the surface of a base powder of a metal, metal oxide, etc. with two or more layers of a metal oxide or the like, the films of a metal oxide or the like are formed through decomposition, etc. from a metal salt as an inexpensive material. This is attained by making the powder particles not to be attacked by acids, etc. when the metal salt decomposition or the like, which yields an acid, etc., is conducted. The multilayer-coated powder is characterized in that the multilayered film comprises at least one layer consisting of a metal hydroxide or metal oxide film formed by the hydrolysis of a metal alkoxide and, as a layer disposed on the outer side of that layer, a coating film consisting of a metal hydroxide or metal oxide film formed by a reaction, e.g., neutralization or pyrolysis, of a metal salt. Upon heating, the metal hydroxide or metal oxide film formed by the hydrolysis of a metal alkoxide becomes a dense metal oxide film.

Abstract: A dispensing apparatus is which, even when a small amount of a medium is to be dispensed, can satisfactorily dispense the medium.