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The present invention provides a process for producing water-absorbing resin particles which possess a high water retention capacity (absorbing capacity), a high water-absorbing capacity under pressure, and a high gel strength and a small amount of water-soluble substance and is favorably usable in sanitary materials; water-absorbing resin particles obtained by the process; and absorbent materials and absorbent articles made by using the particles. More specifically, the water-absorbing resin particles are produced by a process for producing water-absorbing resin particles, comprising a step of a post-crosslinking reaction by adding a post-crosslinking agent in at least two stages to a water-absorbing resin particle precursor obtained by polymerization of a water-soluble ethylenic unsaturated monomer to carry out the post-crosslinking reaction.

A textile includes a composite twisted yarn, including a spun yarn and a water-soluble yarn. The spun yarn has a twist direction that is a reverse of a twist direction of the composite twisted yarn. The water-soluble yarn is twisted with the spun yarn. A twist number of the composite twisted yarn is 1.3 to 3 times a twist number of the spun yarn, and a weight ratio of the spun yarn relative to the water-soluble yarn [spun yarn] / [water-soluble yarn] is 20 / 80 to 98 / 2. An other textile may also include an elongated elastic yarn having an elongation of 2 to 5 times an original length of the elastic yarn in a non-elongated position, and the elongated elastic yarn is twisted with the water-soluble yarn and the spun yarn. A twist number of the composite twisted yarn is 0.3 to 3 times a twist number of the spun yarn.

The present invention relates to a casting method which employs rapid solidification of metal, rare-earth metal or the like, as well as to a casting apparatus and a cast alloy. A centrifugal casting method includes the steps of pouring a molten material onto a rotary body; sprinkling the molten material by the effect of rotation of the rotary body; and causing the sprinkled molten material to be deposited and to solidify on the inner surface of a rotating cylindrical mold. The axis of rotation of the rotary body and the axis of rotation of the cylindrical mold are caused not to run parallel to each other. The centrifugal casting method can attain a decrease in average deposition rate. As a result, generation of the dendritic alphaFe phase or generation of a segregation phase of Mn or the like is suppressed, thereby realizing a high-performance R-T-B-type rare-earth magnet alloy.

An object of the present invention is to provide a woven fabric having high transparency that a batting is made see-through, having a strength necessary for side clothes of clothing or futons, and further having a low air-permeability in order to provide an unprecedented clothing or futon whose batting is seen through. A woven fabric of the present invention is characterized in comprising a multifilament having a single yarn fineness of 0.5 to 3.0 dtex and a total fineness of 3 to 25 dtex, wherein the woven fabric has a cover factor of 1300 to 2500, a visible light transmittance of 25% to 80%, and an L* value of 37 or higher.

Disclosed is a photoresist stripping solution consisting essentially of (a) a quaternary ammonium hydroxide (e.g., tetramethylammonium hydroxide), (b) at least one water-soluble organic solvent selected from glycols and glycol ethers (e.g., propylene glycol, ethylene glycol, diethylene glycol monobutyl ether), and (c) a non-amine water-soluble organic solvent (e.g., dimethyl sulfoxide, N-methyl-2-pyrrolidone). The photoresist stripping solution of the invention has an excellent photoresist strippability, not causing damage of swelling / coloration to acrylic transparent films used in production of liquid-crystal panels and not causing damage to electrode materials. In particular, it has an excellent photoresist strippability to remove even a thick-film negative photoresist (photosensitive dry film) used in production of semiconductor chip packages (especially, wafer-level chip size packages, W-CSP), not causing damage to copper.

The present invention provides a process for producing water-absorbing resin particles which possess a high water retention capacity (absorbing capacity), a high water-absorbing capacity under pressure, and a high gel strength and a small amount of water-soluble substance and is favorably usable in sanitary materials; water-absorbing resin particles obtained by the process; and absorbent materials and absorbent articles made by using the particles. More specifically, the water-absorbing resin particles are produced by a process for producing water-absorbing resin particles, comprising a step of a post-crosslinking reaction by adding a post-crosslinking agent in at least two stages to a water-absorbing resin particle precursor obtained by polymerization of a water-soluble ethylenic unsaturated monomer to carry out the post-crosslinking reaction.

Provided is a method for producing a polymer compound that has very low contents of impurities such as metal components and exhibits excellent storage stability. The production method gives such a polymer compound. The polymer compound is incorporated into a photoresist resin composition.The method for producing a polymer compound includes the step of filtering a resin solution containing a polymer compound through a filter. The filter is approximately devoid of strongly acidic cation-exchange groups and develops a positive zeta potential. The polymer compound includes a monomer unit (a) and a monomer unit (b). The monomer unit (a) includes at least one monomer units represented by Formulae (a1) to (a3). The monomer unit (b) contains a group capable of releasing a moiety thereof by the action of an acid to develop solubility in an alkali.

A lubricating oil composition contains: a base oil with a kinematic viscosity at 40 degrees C. in a range from 1 mm2 / s to 200 mm2 / s, a viscosity index of 80 or more and a sulfur content of less than 0.03 mass %; a component (A) being a polyacrylate compound with a mass average molecular weight in a range from 10,000 to 100,000; and a component (B) being at least one of phosphorus compounds represented by a formula (1) below. A content of the component (B) is in a range from 0.05 mass % to 2.0 mass % of a total amount of the composition, and a viscosity index of the composition is 160 or more.

A catalyst composition which prevents deterioration due to grain growth of Rh and / or Pt, includes a perovskite-type composite oxide represented by the following general formula (1):A1−xA′xB1−(y+z)B′yNzO3  (1)wherein A represents at least one element selected from alkaline earth metals; A′ represents at least one element selected from rare earth elements; B represents at least one element selected from Ti, Zr, and Hf; B′ represents at least one element selected from transition elements (excluding rare earth elements, Ti, Zr, Hf, Rh, and Pt) and Al; N represents at least one element selected from Rh and Pt; x represents an atomic ratio satisfying the following condition: 0≦x≦0.4; y represents an atomic ratio satisfying the following condition: 0≦y<0.5; z represents an atomic ratio satisfying the following condition: 0<z≦0.5; and X represents 0 when N represents Pt alone.

A system for capturing and displaying not directly-viewable spaces near a vehicle includes an apparatus for image capturing and an apparatus for image display. The apparatus for image capturing captures at least two arbitrary points Q and R. A ground plane is spanned by the Cartesian coordinates xv and yv, and xv lies in the vehicle middle plane. The display displays an image that includes an image Q′ of the point Q and an image R′ of the point R on a display plane spanned by the Cartesian coordinates xv′ and yv′, with xv′ lying on a reproduction of the vehicle middle plane. A projection QR, xv of the vector QR onto xv and a projection Q′R′, xv′ of a vector Q′R′ onto xv′ have the same direction, and a projection QR, yv of the vector QR onto yv and a projection Q′R′, yv′ of a vector Q′R′ onto yv′ have the same direction.

Provided is an electroconductive pressure-sensitive adhesive tape which is satisfactorily less corrosive and is capable of maintaining stable electrical conductivity over the long term. The electroconductive pressure-sensitive adhesive tape has at least one acrylic pressure-sensitive adhesive layer. The electroconductive pressure-sensitive adhesive tape has a volume resistance of 1×101Ω or less and has a total amount of acrylic acid ions and methacrylic acid ions extracted from the electroconductive pressure-sensitive adhesive tape of 20 ng / cm2 or less per unit area of the acrylic pressure-sensitive adhesive layer, where the extraction is performed with pure water under conditions of 100° C. for 45 minutes, and the total amount is measured through ion chromatography.

The invention relates to a tap changer for the interruption-free switchover between winding taps of a tap-changing transformer. Furthermore, the present invention relates to a novel vacuum interrupter which is particularly suitable for such a tap changer. The tap changer according to the invention is based on the general concept of combining in each case one main contact (V1) and one mechanical switching means (U1), connected in series therewith, of a first load branch and an additional resistive contact (V3) of a second load branch in only a single vacuum interrupter (1) with a common housing (5). The vacuum interrupter (1) according to the invention is furthermore based on the general inventive concept of replacing the functionalities of two required vacuum interrupters in accordance with the prior art and an additional mechanical switching means with a single vacuum interrupter (1) according to the invention by virtue of combining the design of a vacuum interrupter (1) with a plurality of moveable contact systems (I, II, III), which are arranged in separate vacuum interrupter chambers (2, 3, 4) which are sealed with respect to one another.

A screw having stabilized strength, combination with a driver bit that best fits the screw, and a header punch for producing the screw. The screw having stabilized strength has letter Y-shaped bit-fitting grooves formed in the head portion of the screw. Forming the grooves makes fitting of a corresponding driver to the screw easy, prevents occurrence of a cam-out phenomenon to enhance work efficiency, makes torque transmission to be made smoothly and sufficiently, and stabilizes strength. The bit-fitting grooves are formed in a letter Y shape that is substantially equally divided into three sections in the circumferential direction, the grooves being formed at positions required distances away from the central portion of the screw head. The width of each of the grooves extending in radial directions from the central portion of the bit-fitting grooves is set so that the grooves are gradually expanded and substantially equally spaced with spacing each equal to the width of a boundary section between adjacent grooves. Further, the outer peripheral end wall surface of each bit-fitting groove is made substantially vertical from an opening edge section up to a required depth. The outer peripheral end wall surface is displaced downward from a lower edge section of the wall surface toward the central portion of the screw head, and the center where the wall surfaces meet are formed as a substantially conical bottom surface.

A wireless IC device that improves radiation gain without increasing substrate size and easily adjusts impedance, includes a multilayer substrate including laminated base layers. On a side of an upper or first main surface of the multilayer substrate, a wireless IC element is arranged to process a high-frequency signal. On a side of a lower or second main surface of the multilayer substrate, a first radiator is provided and is coupled to the wireless IC element via a feeding circuit including first interlayer conductors. On the side of the first main surface, a second radiator is provided and is coupled to the first radiator via second interlayer conductors.

Provided is a monomer composition that has rapid curability and can be rapidly cured, even in the presence of oxygen and / or water, to form a cured product having excellent adhesion to a wide variety of substrates. The monomer composition according to the present invention includes at least one cationically curable monomer. The at least one cationically curable monomer includes at least one of 3-allyloxyoxetane and 3-(2-ethylhexyloxy)oxetane. The at least one of 3-allyloxyoxetane and 3-(2-ethylhexyloxy)oxetane is present in a total content of 5 weight percent or more of the total weight of the monomer composition.

Cell / organism is separated by using a hydrogel capable of selectively moving a cell in accordance with a difference in the concentration of a physiologically active substance. The invention provides a hydrogel capable of conducting separation (fractionation, differential separation, fractional collection) of cell / organism having a variety of taxes, which could not be attained in the prior art.