Shin-Etsu Chemical Patente

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A rare earth sintered magnet is produced by depositing a coating of rare earth-containing particles on the surface of a rare earth magnet body, and heat treating the magnet body for causing absorption and diffusion of rare earth element in the magnet body. The depositing step utilizes a particle impingement phenomenon.

A material for forming a filling film for inhibiting semiconductor substrate pattern collapse contains: (A) a polymer having a structural unit shown by the following general formula (1); (B) a residual-solvent removal promoter containing a compound shown by the following general formula (2); and (C) an organic solvent. A ratio Mw/Mn of a weight-average molecular weight Mw and a number-average molecular weight Mn of the polymer (A) in terms of polystyrene by a gel permeation chromatography method is 2.50≤Mw/Mn≤9.00. The residual-solvent removal promoter (B) is contained in an amount of 0.1 to 40 parts by mass based on 100 parts by mass of the polymer (A). The material for forming a filling film for inhibiting semiconductor substrate pattern collapse contains no acid generator. This provides: a material for forming a filling film for inhibiting semiconductor substrate pattern collapse, the resulting filling film being capable of filling a fine structure pattern having high aspect ratio without causing voids; and a method for treating a semiconductor substrate to successfully inhibit semiconductor substrate pattern collapse.

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The present invention is a negative electrode active material containing negative electrode active material particles, in which the negative electrode active material particles contain a porous carbon structure, a low-valent nano silicon oxide in an amorphous state is dispersed within the porous carbon structure, the low-valent nano silicon oxide includes states represented by SiOx where "x" is less than 1.0, and the low-valent nano silicon oxide has a particle size of 50 nm or less on average, the particle size being determined by image processing of a cross-sectional TEM image. This provides the negative electrode active material capable of increasing a capacity thereof while maintaining battery characteristics.

Disclosed is a curable organopolysiloxane composition which contains the components (A), (B), (C) and (D) described below, does not separate or precipitate an addition reaction control agent even when stored at low temperatures, has excellent low-temperature storage stability, and has excellent pot life at high temperatures. (A) an organopolysiloxane which has an alkenyl group bonded to a silicon atom, (B) an organohydrogenpolysiloxane, (C) an addition reaction control agent which contains the components (C-1) and (C-2) described below, and is in an amount of 0.06-0.60 part by mass relative to a total of 100 parts by mass of the components (A) and (B), wherein the mass ratio (C-2)/(C-1) of the component (C-2) to the component (C-1) is 0.10-5.00, the component (C-1) is an acetylene alcohol having a boiling point of 150-189°C, and the component (C-2) is a compound having a refractive index of 1.420-1.450 at 25°C and a boiling point of 190°C or higher, (D) a platinum group metal-based catalyst.

The present invention is a photocurable silicone composition comprising: (A) organopolysiloxane represented by the formula (1); (B) an organic compound having an (meth)acrylic group, an epoxy group, and no alkoxysilyl group; (C) a photo-radical polymerization initiator; and (D) a silica powder having a BET specific surface area of 100 m²/g or more, wherein, in the component (A), a ratio of methyl groups bonded to a silicon atom to phenyl groups bonded to a silicon atom is 97:3 to 80:20. This can provide a photocurable silicone composition that is excellent in surface curability and deep curability and provides a low compression set.In the formula, R² represents a group represented by the formula (2),in the formula, R³ represents a methyl or phenyl group, Z¹ represents a divalent organic group, Z² represents an oxygen atom or a divalent organic group, and a line with a wave represents an attachment point.

&#91;0001] A hydrophilic composition containing (A) 100 mass parts of a hydrophilic copolymer containing structural units represented by formula (1) and structural units represented by formula (2) and (B) 0.001-10 mass parts of a blocked isocyanate silane compound yields a coating film having exceptional hydrophilicity, anti-fogging properties, and water resistance. <img class="EMIRef" id="64204be8-1f82-4c66-973b-0bcddee88bab-ia01" /> [In formula (1), R<1> represents a hydrogen atom or a methyl group, R<2> each independently represent a C1-6 alkyl group, and n represents an integer of 1-6. In formula (2), R<3> represents a hydrogen atom or a methyl group, X<1> represents -NH- or -O-, Z<1> represents a hydrogen atom, a methyl group, a hydroxyl group, a carboxy group, or an amino group, and m represents an integer of 0-10 (however, when m is 0, Z<1> is a hydrogen atom or a methyl group.) An asterisk * represents bonding to an adjacent structural unit.&#93;

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The present invention is a thermally conductive sheet containing two or more kinds of fibrous thermally conductive fillers (B) having different average fiber diameters in a polymer matrix (A), wherein a ratio of the maximum diameter to the minimum diameter of the average fiber diameters is 2:1 to 45:1. This can provide a thermally conductive sheet having excellent thermal conductivity and low specific gravity by filling two or more kinds of fibrous thermally conductive fillers having different average fiber diameters.

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