Abstract: A method for producing an aqueous dispersion is disclosed, the method including: obtaining an aqueous titanium oxide dispersion containing titanium oxide particles, a dispersant, and water; and obtaining titanium oxide composite particles by adding a polymerizable monomer and a polymerization initiator to the aqueous titanium oxide dispersion to polymerize the polymerizable monomer, in which the obtaining of the titanium oxide composite particles includes adding the polymerizable monomer at a mass ratio of 1/5 or more relative to the total amount of the titanium oxide particle at one time, and the polymerizable monomer contains a polymerizable monomer A of which solubility in water is 0.5 g/100 ml or less at 23° C. An aqueous dispersion and an aqueous ink are also disclosed.

Abstract: Power consumption is reduced.

Abstract: A crystalline silicon carbide fiber containing silicon carbide and boron nitride, the crystalline silicon carbide fiber having a content of Si of 64% to 72% by weight, a content of C of 28% to 35% by weight, and a content of B of 0.1% to 3.0% by weight, and including, at a surface portion, a composition gradient layer in which a content of silicon carbide increases while a content of boron nitride decreases toward a depth direction.

Abstract: A photodetection device according to the present disclosure includes: a light-receiving section that includes a light-receiving element, and generates a pulse signal including a pulse corresponding to a result of light reception by the light-receiving element; a plurality of switches that is each turned on or off on the basis of a corresponding control signal of a plurality of control signals, and each transmits the pulse signal by being turned on in a pulse period of the corresponding control signal of the plurality of control signals; a plurality of counters that is provided corresponding to the plurality of switches, and each performs counting processing on the basis of the pulse signal supplied through a corresponding switch of the plurality of switches to generate a first count value; and a signal generator that generates the plurality of control signals in a detection period to sequentially shift the respective pulse periods of the plurality of control signals by a unit period having a shorter time leng

Abstract: Provided is a crystalline silicon carbide fiber containing silicon carbide, boron nitride, and zirconium carbide and having a content of Si of 64% by weight or more and a content of C of 28% by weight or more, in which the average particle size of SiC crystal grains is 100 nm or more.

Abstract: A crystalline silicon carbide fiber containing silicon carbide and boron nitride, the crystalline silicon carbide fiber having a content of Si of 64% to 72% by weight, a content of C of 28% to 35% by weight, and a content of B of 0.1% to 3.0% by weight, and including, at a surface portion, a composition gradient layer in which a content of silicon carbide increases while a content of boron nitride decreases toward a depth direction.

Abstract: A display device includes a digitizer that outputs a signal according to an output value from a pressure sensor, a trigger generating circuit that receives the output from the pressure sensor and generates a trigger signal, a control circuit that drives the touch sensor and the pressure sensor, and a power supply circuit that supplies first electric power to the touch sensor, the pressure sensor, the digitizer, and the control circuit. When the power supply circuit does not supply the first electric power and there is input to the pressure sensor, the trigger generating circuit receives second electric power in response to the input. The trigger generating circuit generates and inputs the trigger signal based on the second electric power to the power supply circuit, and thereby, the power supply circuit shifts to a state of supplying the first electric power.

Abstract: A display device includes a digitizer that outputs a signal according to an output value from a pressure sensor, a trigger generating circuit that receives the output from the pressure sensor and generates a trigger signal, a control circuit that drives the touch sensor and the pressure sensor, and a power supply circuit that supplies first electric power to the touch sensor, the pressure sensor, the digitizer, and the control circuit. When the power supply circuit does not supply the first electric power and there is input to the pressure sensor, the trigger generating circuit receives second electric power in response to the input. The trigger generating circuit generates and inputs the trigger signal based on the second electric power to the power supply circuit, and thereby, the power supply circuit shifts to a state of supplying the first electric power.

Abstract: A method for manufacturing a display device includes a first step of placing a substrate having a lower electrode formed thereon in a vacuum environment; a second step of forming in a vacuum an organic layer that includes a light emitting layer and covers the lower electrode; a third step of forming in a vacuum an upper electrode that covers the organic layer; a fourth step of forming in a vacuum a sealing layer that covers the upper electrode; and a cleaning step of cleaning the substrate after end of the first step before end of the fourth step.

Abstract: A thermosetting solution composition composed of a biphenyltetracarboxylic acid compound containing a partial lower aliphatic alkyl ester of 2,3,3?,4?-biphenyltetracarboxylic acid and/or a partial lower aliphatic alkyl ester of 2,2?,3,3?-biphenyltetracarboylic acid, an aromatic diamine compound in a molar amount larger than a molar amount of the biphenyltetracarboxylic acid compound, a partial lower aliphatic alkyl ester of 4-(2-phenylethynyl)phthalic acid compound in a molar amount as much as 1.8-2.2 times a molar amount corresponding to a difference between the molar amount of the aromatic diamine compound and the molar amount of the biphenyltetracarboxylic acid compound, and an organic solvent composed of a lower aliphatic alcohol is of value for manufacture of a prepreg.

Abstract: A friction material characterized by using a resin composition for friction materials, the resin composition containing, as a binder, an aromatic imide oligomer having an addition-reactive group at an end thereof. Also described is a resin composition for friction materials, containing: a powder of an aromatic imide oligomer having an addition-reactive group at an end thereof; at least one type of fiber selected from the group consisting of carbon fiber, aramid fiber, glass fiber, ceramic fiber, and metal fiber; and an inorganic filler. The friction material and a resin composition for friction materials have good formability and in which the binder itself has excellent heat resistance and mechanical properties, compared to a friction material using a phenolic resin as a binder.

Abstract: Disclosed are polyimide short fibers having an extremely high heat resistance, suitable for non-woven fabrics and paper, and having many branches. Specifically, disclosed are polyimide short fibers having many branches, which are produced by beating and loosening a specific foamed polyimide material. The foamed material preferably comprises a polyimide produced using 2,3,3?,4?-biphenyltetracarboxylic acid as an aromatic tetracarboxylic acid component, preferably has a glass transition temperature of 300° C. or higher, and preferably has an expansion ratio of 20 times or more.

Abstract: The object is to propose an improved process for the production of a polyimide foam by which a large-sized polyimide foam in a state of fine and homogeneous cells can be readily obtained by easy operations and convenient steps. A melt-shaped body of a polyimide precursor obtainable by melt-treating in a closed state a powder of a polyimide precursor including at least an aromatic tetracarboxylic acid ester component and an aromatic amine component. A process for the production of a polyimide foam including the steps of melt-shaping in a closed state a powder of a polyimide precursor including at least aromatic tetracarboxylic acid ester component and an aromatic amine component to give a melt-shaped body of the polyimide precursor, and foaming the melt-shaped body of the polyimide precursor by a heat treatment.

Abstract: Disclosed are polyimide short fibers having an extremely high heat resistance, suitable for non-woven fabrics and paper, and having many branches. Specifically, disclosed are polyimide short fibers having many branches, which are produced by beating and loosening a specific foamed polyimide material. The foamed material preferably comprises a polyimide produced using 2, 3, 3?, 4?-biphenyltetracarboxylic acid as an aromatic tetracarboxylic acid component, preferably has a glass transition temperature of 300° C. or higher, and preferably has an expansion ratio of 20 times or more.

Abstract: Provided are flexible heater excellent in heat resistance and in terminal strength, and a method for manufacturing same. A flexible heater 2 includes: a based member 10; a heating element circuit 12 formed on the base member 10; a heating element circuit cover member 14 which covers the heating element circuit 12; and a pair of lead wires 17 and 17 connected to a pair of connection end portions 12a and 12a of heating element circuit 12. The heating element circuit cover member 14 has opened portions 14a and 14a for not covering connection end portions 12a and 12a and their surroundings. The connection end portions 12a and 12a and their surroundings, and portions of the lead wires 17 and 17 above the base member 10 are covered through a heat-resistant adhesive 20 with an end portion cover member 22 provided separately from heating element circuit cover member 14.

Abstract: A polyimide powder for an antistatic polyimide molded product is disclosed. The polyimide powder comprises a polyimide-powder prepared from an aromatic tetracarboxylic acid component and a diamine component, and a conductive carbon black having a DBP oil absorption of 300 ml/100 g or more; wherein the amount of the conductive carbon black is within a range of 0.75 wt % to 5 wt % relative to the polyimide-powder. A polyimide molded product with sufficient antistatic property can be formed by molding the above polyimide powder.

Abstract: A friction material characterized by using a resin composition for friction materials, the resin composition containing, as a binder, an aromatic imide oligomer having an addition-reactive group at an end thereof. Also described is a resin composition for friction materials, containing: a powder of an aromatic imide oligomer having an addition-reactive group at an end thereof; at least one type of fiber selected from the group consisting of carbon fiber, aramid fiber, glass fiber, ceramic fiber, and metal fiber; and an inorganic filler. The friction material and a resin composition for friction materials have good formability and in which the binder itself has excellent heat resistance and mechanical properties, compared to a friction material using a phenolic resin as a binder.

Abstract: A polyimide powder for an antistatic polyimide molded product is disclosed. The polyimide powder comprises a polyimide-powder prepared from an aromatic tetracarboxylic acid component and a diamine component, and a conductive carbon black having a DBP oil absorption of 300 ml/100 g or more; wherein the amount of the conductive carbon black is within a range of 0.75 wt % to 5 wt % relative to the polyimide-powder. A polyimide molded product with sufficient antistatic property can be formed by molding the above polyimide powder.

Abstract: A polyimide powder for an antistatic polyimide molded product is disclosed. The polyimide powder comprises a polyimide-powder prepared from an aromatic tetracarboxylic acid component and a diamine component, and a conductive carbon black having a DBP oil absorption of 300 ml/100 g or more; wherein the amount of the conductive carbon black is within a range of 0.75 wt % to 5 wt % relative to the polyimide-powder. A polyimide molded product with sufficient antistatic property can be formed by molding the above polyimide powder.

Abstract: A water-soluble polyimide precursor, which can be suitably applied for aromatic polyimides and exhibits a low reduction in heat resistance and mechanical properties, an aqueous solution of the polyimide precursor and a polyimide obtained from the precursor. A heat-resistant fiber impregnated material and an impregnated sheet-like material are prepared by using the precursor and a laminate is prepared by employing the precursor.