Tokuyama (TKYMF) USPTO patentsUtility application

A method of manufacturing polycrystalline silicon rod, wherein a reactor for manufacturing a polycrystalline silicon rod includes gas supply nozzles, and at least one nozzle is a flow rate amplification nozzle having a function that the amount of a silicon deposition raw material gas supplied to the nozzle can be increased.

A separating membrane-gasket-protecting member assembly including: an ion-permeable separating membrane; a gasket holding a periphery of the membrane; and a frame-shaped protecting member holding the gasket; the protecting member including: a frame-shaped base body; and a frame-shaped lid member; the base body including: a receiving part being arranged in an inner periphery of the base body and receiving the gasket and the lid member; and a supporting part extending toward an inner periphery side of the base body and supporting the gasket received in the receiving part in a direction crossing a main face of the membrane; and the lid member having dimensions such that the lid member can be received in the receiving part, wherein the gasket and the lid member are received in the receiving part such that the gasket is sandwiched between the supporting part and the lid member.

An apparatus for alkaline water electrolysis including: an electrolysis vessel; first and second gas-liquid separators respectively separating electrolytes and oxygen/hydrogen gas flowing out from anode/cathode chambers; first and second electrolyte tanks respectively storing the electrolytes separated by the first/second gas-liquid separators; oxygen and hydrogen gas feed pipes respectively introducing the separated oxygen/hydrogen gas into gas phase parts of the first/second electrolyte tanks; oxygen and hydrogen gas exhaust pipes respectively allowing oxygen/hydrogen gas to flow out from the gas phase parts of the first/second electrolyte tanks therethrough; and a circulator supplying the electrolytes from the first and second electrolyte tanks to the electrolysis vessel.

A coating composition comprising (A) inorganic oxide fine particles, (B) a hydrolyzable group-containing organic silicon compound, (C) water or an acid aqueous solution, (D) a curing catalyst and (E) an organic solvent, wherein the inorganic oxide fine particles (A) contain 100 parts by mass of (A1) first inorganic oxide fine particles containing not less than 50 mass % of a zirconium oxide component and 0.1 to 90 parts by mass of (A2) cerium oxide fine particles.

A process for reforming the fly ash, including the heating step that heats a raw fly ash powder containing the unburned carbon at a temperature of 780 to 1000° C. to decrease the amount of the unburned carbon contained in the raw fly ash powder; and the cooling/classifying step that introduces the heat-treated fly ash in a state of being maintained at a high temperature as obtained through the heating step into a cooling/classifying apparatus so that the fly ash is separated into a fine grains and a coarse grains; wherein the cooling/classifying apparatus 3 used in the cooling/classifying step has a basic structure in which the gas flow for classification is introduced from the lower side and the gas flow Z for cooling/classification introduced into the apparatus is then discharged from the upper side; the heat-treated fly ash is brought into contact with the gas flow Z for cooling/classification, the fine grains contained in the heat-treated fly ash is lifted up and discharged out of the apparatus while the coarse grains contained in the heat-treated fly ash is allowed to stay in the apparatus 3, and the fine grains and the coarse grains are separated and cooled; and the fine grains discharged from the apparatus 3 is recovered by using a dust-collecting apparatus, and the coarse grains is recovered from the apparatus 3.

The invention is a photochromic compound having an indenonaphthopyran skeleton, and the indenonaphthopyran skeleton has an alkenyl group having 10 to 30 carbon atoms, and an oligomer chain group A having 3 or more recurring units selected from a polyalkylene oxide oligomer chain group, a polyester oligomer chain group, a polysiloxane chain group and a polyester polyether oligomer chain group.

In an embodiment of the present invention, contaminants contained in polycrystalline silicon are removed to obtain highly-pure polycrystalline silicon, with only a small amount of etching.

A process for reforming the fly ash, including the heating step that heats a raw fly ash powder containing the unburned carbon at a temperature of 780 to 1000° C. to decrease the amount of the unburned carbon contained in the raw fly ash powder; the classifying step that introduces the heat-treated fly ash containing the unburned carbon in decreased amounts obtained through the heating step into a classifying apparatus in the state of being heated at a high temperature so as to separate the fly ash into a coarse powder and a fine powder; the fine powder recovering step that recovers the fine powder of the heat-treated fly ash obtained through the classifying step by using a dust-collecting apparatus; and the milling step that mills the coarse powder of the heat-treated fly ash obtained through the classifying step until a 45 μm sieve residue becomes not more than 34% by mass, and then recovers the milled powder.

Composite oxide fine particles are produced by sol-gel method under conditions in which coarse particles and aggregated particles are unlikely to be generated, and the composite oxide fine particles are further wet-filtered using a filter to remove the coarse particles and the aggregated particles.

The purpose of the present invention is to provide a stainless steel member and a production method thereof, said stainless steel member having a passivation layer formed on a surface of a base material formed from stainless steel, wherein the film thickness of the passivation layer is 2-20 nm, and the concentration of chromium atoms in the outermost surface of the passivation layer is 0.1-2.3 by atomic percentage.

Provided is a method for producing a high-purity, high-quality semicarbazide compound at a high yield by a simple method.

A photochromic curable composition comprising a radically polymerizable monomer having at least one oxetanyl group in one molecule, a photochromic compound and radically polymerizable monomers other than the above polymerizable monomer, and a photochromic cured body obtained by polymerizing the photochromic curable composition.

A process for producing a silicon nitride powder characterized by comprising a step of providing a starting material powder containing not less than 90% by mass of a silicon powder; the step of filling a heat-resistant reaction vessel with the starting material powder; a step of obtaining a massive product thereof by a combustion synthesis reaction by igniting the starting material powder filled in the reaction vessel in a nitrogen atmosphere and permitting a heat of nitriding combustion of silicon to propagate to the whole starting material powder; and a step of mechanically milling the massive product by a dry method.

Provided are a method for separating a DAPTAD-containing triazolinedione compound in solid form from a reaction solution, a separated solid triazolinedione compound, and a novel method for producing a triazolinedione compound.

A functional lens comprising a functional laminate (A) having a functional layer (Ac) having photochromic properties and/or polarizability between a first optical sheet (Aa) and a second optical sheet (Ab) both made of a resin such as polyamide resin and a synthetic resin layer (B) made of a resin such as allyl resin or polythiourethane resin on the first optical sheet (Aa) and/or the second optical sheet (Ab) of the functional laminate (A) and having an adhesive strength between the first optical sheet (Aa) and/or the second optical sheet (Ab) and the synthetic resin layer (B) of not less than 50 N.

To prevent solidified aluminum chloride from adhering to and accumulating on a pipe and also prevent stress-corrosion cracking in the pipe, a method for producing trichlorosilane includes a cooling step of cooling a discharge gas that is discharged from a fluidized-bed reactor and that contains the trichlorosilane, the cooling step involving causing a fluid to flow through a space (4) inside a side wall (3) of a pipe (10), the pipe being a pipe for discharging the discharge gas from the fluidized-bed reactor, in such a manner that the side wall (3) has a surface (1a) having a temperature of not lower than 110° C.

An object of the present invention is to provide a stretched porous film having all of air permeability, water resistance, and flexibility.