174results about How to "Good resistance stability" patented technology

A method for forming a stamper used in the manufacture of CDs, DVDs, and other types of optical disks comprises forming a substrate by rolling. A layer of material is deposited (e.g. by plating) onto the substrate. Thereafter, a resist layer is formed on the layer of material and patterned. Because the substrate is formed by rolling, it is relatively inexpensive to form the substrate to a desired thickness. Because the layer of material is formed by deposition (e.g. plating), it is relatively inexpensive to ensure that the layer has a very smooth surface (i.e. without necessitating a great deal of polishing).

The invention discloses a polymer-carbon nanotube-carbon black composite temperature self-regulating positive temperature coefficient (PTC) electric heating material. The polymer-carbon nanotube-carbon black composite temperature self-regulating PTC electric heating material has positive temperature coefficients and high PTC intensity. The polymer-carbon nanotube-carbon black composite temperature self-regulating PTC electric heating material comprises: by weight, 35 to 75% of one or more of high-density polyethylene, low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, nitrile rubber buna, epoxy resins and polyvinylidene fluoride, 15 to 55% of carbon black and carbon nanotubes, 3 to 12% of an inorganic filling material, and 0.02 to 0.1% of an antioxidant. The above raw materials are mixed, then are subjected to processing molding by a banbury or a double-screw extruder, and are subjected to radiation crosslinking to form the polymer-carbon nanotube-carbon black composite temperature self-regulating PTC electric heating material with high PTC intensity. The polymer-carbon nanotube-carbon black composite temperature self-regulating PTC electric heating material has high PTC intensity and thus a leakage current is low and security and heat stability are good. In an electric warming respect, the polymer-carbon nanotube-carbon black composite temperature self-regulating PTC electric heating material is widely utilized in the fields of temperature self-regulating heaters, over-current protection and temperature sensors.

Provided is a photosensitive composition for volume hologram recording capable of forming a volume hologram recording medium that less shrinks upon curing in hologram recording (in hologram formation) and resists cracking. The photosensitive composition for volume hologram recording contains an alicyclic epoxy compound (A) represented by Formula (I); a thermal acid generator (B); a radically polymerizable compound (C); a radical polymerization initiator (D); and at least one epoxy compound (E) selected from the group consisting of compounds represented by Formula (1), epoxidized fatty acid esters, and epoxidized conjugated diene polymers.

The present invention relates to a thermoplastic resin composition which excels in impact resistance, dimension stability and rigidity, and also excels in appearance, fluidity and paint film adhesion property, and further which is very useful as manufacturing materials for exterior parts of automobile. A thermoplastic resin composition comprising component (A): a polyamide resin; component (B): a hydrogenated product of block copolymer comprising vinyl aromatic polymer block (a) and conjugated diene based polymer block (b), and/or ethylene-α-olefin based block copolymer; component (C): a modified hydrogenated product of block copolymer comprising the vinyl aromatic polymer block (a) and the conjugated diene based polymer block (b), which hydrogenated product is modified by addition of an unsaturated acid and/or derivative thereof; component (D): a plate-like and/or needle-like inorganic filler; and component (F): an ethylene-vinyl alcohol copolymer and/or a partial saponified product of ethylene-vinyl acetate copolymer.

The present invention relates to a thermoplastic resin composition comprising an aromatic polycarbonate resin (component A) [which may comprise an aromatic polycarbonate resin (component A1) and a thermoplastic resin other than the aromatic polycarbonate resin (component A2)], a granular talc (component B) having a bulk density of 0.4 to 1.5 g/mL which is obtained by granulating a talc having an average particle size of 0.1 to 10 μm, a rubber polymer (component C; optional component), a flame retardant (component E; optional component) and a fluorinated polyolefin (component F; optional component), wherein the granular talc (component B) has a particle size in which a proportion of a 500 μm-mesh screen residue thereof is not less than 55% by weight; as well as a resin molded product obtained by molding the thermoplastic resin composition. The thermoplastic resin composition and the resin molded product are excellent in extrusion moldability, rigidity, flame retardant, impact resistance and thermal stability, and exhibit an excellent balance between these properties.

A memory device having a phase change material element with a modified stoichiometry in the active region does not exhibit drift in set state resistance. A method for manufacturing the memory device includes first manufacturing an integrated circuit including an array of phase change memory cells with bodies of phase change material having a bulk stoichiometry; and then applying forming current to the phase change memory cells in the array to change the bulk stoichiometry in active regions of the bodies of phase change material to the modified stoichiometry, without disturbing the bulk stoichiometry outside the active regions. The bulk stoichiometry is characterized by stability under the thermodynamic conditions outside the active region, while the modified stoichiometry is characterized by stability under the thermodynamic conditions inside the active region.

A resist composition comprising: a base component (A) that exhibits changed solubility in a developing solution by the action of acid; a photoreactive quencher (C); and an acid-generator component (B) that generates acid upon exposure, wherein the photoreactive quencher (C) contains a compound represented by general formula (c1) shown below. In the formula, R¹ represents a hydrogen atom or a hydrocarbon group of 1 to 20 carbon atoms which may have a substituent; each of R² and R³ independently represents a hydrogen atom or a hydrocarbon group of 1 to 20 carbon atoms which may have a substituent; at least two of R¹ to R³ may be mutually bonded to form a ring; X represents an oxygen atom or a sulfur atom; n represents 0 or 1; and Z⁺ represents an organic cation.

There is provided a resin composition that comprises a polycarbonate resin derived from an ether diol such as isosorbide and that is excellent in flame retardancy, heat resistance, thermal stability, rigidity, transparency and moldability.

The resin composition is a flame-retardant resin composition comprising 1 to 60 parts by weight of phosphorus compound (component B) having a thermal decomposition temperature of not higher than 340° C. based on 100 parts by weight of polycarbonate resin (component A) that mainly comprises a recurring unit represented by the following formula (1).

A thermoplastic resin composition that can have improved flowability of the present invention comprises (A) about 1 to about 98% by weight of a functional group-containing vinyl copolymer resin reactive with polyester; (B) about 1 to about 98% by weight of an aromatic vinyl graft copolymer resin; (C) about 1 to about 98% by weight of a polyester resin; and (D) about 0.5 to about 30 parts by weight of a bromodiphenyl ethane mixture, based on the total weight of a base resin comprising (A), (B) and (C). The resin composition of the present invention can have flame retardancy, excellent impact resistance, and improved flowablity.

The invention relates to a preparation method of a liquid silicone rubber composition. The preparation method includes mixing polydimethylsiloxane, silica powder, magnesium carbonate, silane modificated conductive carbon black, fumed silica and treating agent to obtain a mixture, subjecting the mixture to heat treatment at 100-150 degrees for 0.5-5h, heating the mixture to 120-160 DEG C, evacuating the mixture under vacuum of -0.04--0.1MPa for 2-6hs, and grinding the mixture 2-4 times to obtain base gum after cooling the same to the indoor temperature; adding and mixing polydimethylsiloxane attenuation and platinum catalyst in the base gum at the normal temperature to obtain material A; adding and mixing polydimethylsiloxane attenuation, cross-linking agent and negative catalyst in the base gum at the normal temperature to obtain material B; mixing the material A and the material B, by weight, in the proportion of 1:1, subjecting the mixture to solidification at 100-200 DEG C for 0.1-50h to obtain the liquid silicone rubber composition. The preparation method is simple, and the liquid silicone rubber contains ultra-low low-molecular-weight content and is high in compression permanent deformation rate.

An electrical device in which an element composed of a conductive polymer composition is positioned in contact with the first surface of a metal electrode, the first surface having a center line average roughness R_a and a reflection density RD, the product R_a times RD being 0.5 to 1.6 μm. The conductive polymer composition preferably exhibits PTC behavior. In a second embodiment an electrical device has an element composed of a conductive polymer composition in contact with the first surface of a metal electrode produced by providing a base metal foil having an R_a of at most 0.45 μm and depositing material onto the base metal foil to form a first surface having a product of Ra times RD of at least 0.14 μm. Other embodiments include electrical devices with metal electrodes made by pulse plating processes, and metal electrodes made by electrodeposition under diffusion-limited conditions. The electrical devices may be circuit protection devices and have improved electrical and physical properties.

The present invention provides a rubber composition capable of improving fuel economy and wet grip performance while maintaining good processability, abrasion resistance and handling stability or improving them, as well as a pneumatic tire including the rubber composition. The rubber composition contains carbon black, silica, and a polymer mixture obtained by modifying a polymer derived from a conjugated diene compound and/or an aromatic vinyl compound with a compound containing an ester group and/or a carboxyl group, the polymer mixture having a weight average molecular weight of from 1.0×10³ to 1.0×10⁵, the rubber composition having a tan δ peak temperature of −20° C. or higher, a rubber hardness of from 63 to 75, and a tan δ at 70° C. of from 0.15 to 0.45.

A highly accurate reduction resistant thermistor exhibiting stable resistance characteristics even under conditions where the inside of a metal case of a temperature sensor becomes a reducing atmosphere, wherein when producing the thermistor comprised of a mixed sintered body (M1 M2)O3.AOx, the mean particle size of the thermistor material containing the metal oxide, obtained by heat treating, mixing, and pulverizing the starting materials, is made smaller than 1.0 mum and the sintered particle size of the mixed sintered body, obtained by shaping and firing this thermistor material, is made 3 mum to 20 mum so as to reduce the grain boundaries where migration of oxygen occurs, suppress migration of oxygen, and improve the reduction resistance.

Provided is a toner including at least: a binder resin; and a colorant, in which: the binder resin contains at least a polyester unit and a vinyl copolymer unit; a main peak MpA is present in the molecular weight region of 2,000 to 7,000 in a molecular weight distribution measured by means of gel permeation chromatography (GPC) of a specific tetrahydrofuran (THF) soluble matter A measured by a specific method; a main peak MpB is present in the molecular weight region of 5,000 to 10,000 in a molecular weight distribution measured by means of GPC of a specific THF soluble matter B which contains a component of a molecular weight region of 100,000 or less in range from 70 to 100 mass %, and the peak molecular weight MpA of the THF soluble matter A and the peak molecular weight MpB of the THF soluble matter B satisfy a specific equation.

An organic positive temperature coefficient thermistor 10 having at least a pair of electrodes 2 and 3 positioned facing each other and a thermistor element 1 having a positive temperature coefficient of resistance which is positioned between the pair of electrodes 2 and 3, wherein the thermistor element 1 is a molded element consisting of a mixture which contains a polymer matrix and conductive particles having electronic conductivity, and wherein the thermistor element 1 has an amount of oxygen calculated by subtracting the amount of oxygen originally present in the various components of the mixture from the amount of oxygen contained in the thermistor element, which is 1.55 weight percent or less of the mass of the thermistor element.

A vanadium oxide thermo-sensitive film material with a high temperature coefficient of resistance (TCR) contains a rare earth element of Yttrium serving as a dopant in a preparation process. The vanadium oxide thermo-sensitive film material includes a substrate and a yttrium-doped vanadium oxide film layer. The yttrium-doped vanadium oxide film layer includes three elements of vanadium, oxygen and yttrium, wherein the atomic concentration of yttrium is at a range of 1%-8%, the atomic concentration of vanadium is at a range of 20-40% and the residue is oxygen. The method for preparing the vanadium oxide thermo-sensitive film material with high TCR includes a reactive magnetron sputtering method using a low-concentration yttrium-vanadium alloy target as a sputtering source or a reactive magnetron co-sputtering method using dual targets including a high-concentration yttrium-vanadium alloy target and a pure vanadium target as a co-sputtering source.

The present invention provides a thin-film sheet configured from a single layer or a plurality of layers less than or equal to three layers including at least a cellulose fine-fiber layer that includes regenerated cellulose fine fibers by 50 wt % or more, wherein the thin-film sheet achieves improvements in both thermal stability (thermal coefficient of linear expansion and retention of elasticity at high temperature) and sheet strength, and is characterized in that the requirements: (1) the specific surface area equivalent fiber diameter of fibers constituting the cellulose fine-fiber layer is 0.20-2.0 μm inclusive; (2) the air impermeability is 1-100,000 s/100 ml inclusive; and (3) the sheet thickness is 2-22 μm inclusive are satisfied. The present invention also provides a composite sheet, a composite prepreg sheet, a separator for power storage devices, etc., that include the thin-film sheet.

Polybutylene terephthalate has an intrinsic viscosity of 0.7 to 1.0 dL/g and an end carboxyl group concentration of 0.1 to 18 μeq/g, which is produced in a presence of a catalyst comprising a titanium compound and a metal compound containing a metal of Group 2A of the Periodic Table. In the preferable embodiment of the present invention, the polybutylene terephthalate has a crystallization temperature of 170 to 195° C. as measured at a temperature drop rate of 20° C./min using a differential scanning calorimeter, an end vinyl group concentration of not more than 10 μeq/g, and not more than 10% of a solution haze of a solution prepared by dissolving 2.7 g of said polybutylene terephthalate in 20 mL of a mixed solvent containing phenol and tetrachloroethane at a weight ratio of 3:2.

The polybutylene terephthalate of the present invention exhibits excellent color tone, hydrolysis resistance, heat stability, transparency and moldability as well as a less content of impurities, which is suitably applicable to films, monofilaments, fibers, electric and electronic parts, automobile parts, etc.

An object of the present invention is to provide an aromatic polycarbonate resin composition having good rigidity and good hydrolysis resistance. The present invention is an aromatic polycarbonate resin composition comprising: (A) 100 parts by weight of aromatic polycarbonate (component A)

(B) 0.1 to 20 parts by weight of layer silicate (component B) having 50 to 200 milliequivalents/100 g of cation exchange capacity and ion-exchanged by an organic onium ion represented by the following general formula (I):

(wherein M represents a nitrogen atom or a phosphorus atom, R¹ and R² represent an alkyl group having 6 to 16 carbon atoms and may be the same as or different from each other, and R³ and R⁴ represent an alkyl group having 1 to 4 carbon atoms and may be the same as or different from each other),

(C) 0.1 to 50 parts by weight of compound (component C) having an affinity for the component A and having a hydrophilic component, and (D) 0.005 to 1 part by weight of ester (component D) of a higher fatty acid and a polyhydric alcohol.

A resist composition including: a base component (A) that exhibits changed solubility in a developing solution by the action of acid; a photoreactive quencher (C); and an acid generator component (B) that generates acid upon exposure, wherein the photoreactive quencher (C) contains a compound (C) represented by general formula (c1) shown below. In the formula, X represents a cyclic group of 3 to 30 carbon atoms which may have a substituent; R¹ represents a divalent linking group; R² represents an arylene group which may have a substituent, and each of R³ and R⁴ independently represents an aryl group which may have a substituent; R³ and R⁴ may be mutually bonded with the sulfur atom to form a ring; R⁵ represents a hydroxy group, a halogen atom, an alkyl group of 1 to 5 carbon atoms, an alkoxy group or a fluorinated alkyl group; p represents an integer of 0 to 2; and q represents an integer of 0 to 3.

A resin composition comprising a polycarbonate resin derived from an ether diol residue such as isosorbide and has excellent impact resistance, heat resistance, heat stability and moldability.

The resin composition comprises a rubber polymer (component B) in an amount of 1 to 30 parts by weight based on 100 parts by weight of a polycarbonate resin (component A) which contains a recurring unit represented by the following formula (1) as the main constituent and has a glass transition temperature (Tg) of 145 to 165° C. and a 5% weight loss temperature (Td) of 320 to 400° C.

The invention provides a vegetation particle for high and cold meadows, and relates to the field of ecological restoration of grasslands. The vegetation particle is heavier than 0.8 g, and the porosity of the vegetation particle is 45%-50%. The vegetation particle comprises diversified pretreated grass seeds, substrate nutrition layers and water retention layers. The substrate nutrition layers wrap the surfaces of the grass seeds; the water retention layers are positioned between the grass seeds and the substrate nutrition layers. The vegetation particle has the advantages that the technical problems of difficulty in sowing seeds in high and clod grassland regions, high destructiveness, weak material selection pertinence of pelleting processes and the like can be solved by grass seed pelleting processes; the drifting properties of the seeds can be effectively lowered, the seed landing stability can be improved, the seed sowing accuracy can be enhanced, the germination percentage of the seeds can be increased, and the vegetation particle is suitable for near-natural reseeding restoration of high and cold grasslands.