Abstract: Provided is an optical fiber cable having excellent flame retardancy, long-term heat resistance and mechanical characteristics. An optical fiber cable according to the present invention comprises an optical fiber and a cladding layer that is provided on the outer circumference of the optical fiber. The cladding layer contains a chlorinated polyolefin resin (A) and a polyolefin resin (B).

Abstract: A method for supplying reaction gases in which at least a material to be oxidized and a gas containing molecular oxygen are mixed and the resultant mixture is supplied to a catalytic gas-phase oxidation reactor, characterized in that, a feed rate of the material to be oxidized and a feed rate of the gas containing molecular oxygen are adjusted so that when a composition of a gas at the inlet of the catalytic gas-phase oxidation reactor is changed from a composition A point [the concentration of the material to be oxidized: R(a), and the concentration of oxygen: O(a)] represented by plotting a concentration of the material to be oxidized and a concentration of oxygen in the gas at said inlet to a composition B point [R(b) and O(b)] [the composition A point and the composition B point are compositions outside an explosion range, and R(a)?R(b) and O(a)?O(b)], compositions on the way of the change from the composition A point to the composition B point fall outside the explosion range.

Abstract: A method for producing a product having an uneven microstructure on a surface thereof includes: a step (I) which treats a surface of a roll mold (20) having an uneven microstructure thereon with an external release agent containing a fluorine and not containing a functional group (B) which reacts with a functional group (A) existing on the surface of the product; and a step (II) which obtains the product having the uneven microstructure on the surface thereof (40) by inserting an active energy ray curable resin composition (38) including an internal release agent between the roll mold (20) and a film (substrate) (42) after the step (I). Then, the composition is hardened by being irradiated with an active energy ray and a cured resin layer (44) having a surface, onto which the uneven microstructure is transferred, is formed on the surface of the film (42).

Abstract: Its objectives are to provide a golf club shaft that is capable of responding to a wide range of characteristics of a head to be mounted, levels and preferences of golfers, and the like; maintaining the ease of swing even when a heavier head is mounted; providing a preferred feel for a golfer, even when the subject is a professional or low handicap golfer; and increasing the carry of a ball. A golf club shaft made of multiple fiber-reinforced resin layers, containing a heavy substance with a specific gravity of 7 or greater positioned between 0 and 400 mm from the grip end of the golf club shaft; in such a golf club shaft, when the entire length of the golf club shaft is set as Ls and the distance from the head end to the gravity center of the golf club shaft is set as Lg, the ratio Lg/Ls is 0.54˜0.65.

Abstract: This curable resin composition comprises (A) a polymerizable (meth)acrylic-based monomer, (B) a thiourea compound component, and (C) a peroxide component having a structure of formula (1), and may have (D) a (meth) acrylic-based polymer component as an optional component. (In formula (1), R is a C1-15 hydrocarbon group.) In the curable resin composition, preferably, the content of the (A) component is 5-100 mass % and the content of the (D) component is 0-95 mass % relative to the total mass of the (A) component and the (D) component.

Abstract: To provide a novel compound having both a surface-activating ability and a polymerization controlling ability. A compound represented by the following general formula (1) or (2): wherein, R1 and R3 are an organic group having the hydrophile-lipophile balance (HLB) determined by Griffin's method of 3 or more. The definitions of R1, R2, R3, R4, Z, p and q are described in the Description.

Abstract: The present invention relates to a method for producing a prepreg which contains reinforcing fibers and a matrix resin composition with the weight per square meter of the reinforcing fibers being 250-2,000 g/m2. The production method comprises the following steps (1)-(3): (1) a matrix resin composition blending step for obtaining a matrix resin composition by mixing an epoxy resin, a radically polymerizable unsaturated compound, an epoxy resin curing agent and a polymerization initiator that generates radicals, in said step the content of the radically polymerizable unsaturated compound relative to 100% by mass of the total of the epoxy resin and the radically polymerizable unsaturated compound being 10-25% by mass; (2) a matrix resin composition impregnating step; and (3) a surface viscosity increasing step.

Abstract: A method for producing a prepreg, includes: preparing a reinforcing fiber sheet containing multiple reinforcing fiber bundles, a matrix resin composition, first and second release sheets, and elastic members; forming a prepreg precursor by providing the matrix resin composition on the reinforcing fiber sheet; sandwiching the prepreg precursor between the first and second release sheets so that first surfaces of the first and second release sheets make contact with the prepreg precursor and that the first and second release sheets respectively include extended portions that protrude outward from both edges of the prepreg precursor in a width direction; positioning the elastic members to face the extended portions of the second release sheet and to make contact with the second surface of the second release sheet; and compressing the prepreg precursor, first and second release sheets and the elastic members all at once in a thickness direction of the prepreg precursor.

Abstract: Provided are an epoxy resin composition which contains an epoxy resin and a curing agent, and satisfies the following (1), (2), and (3): (1) the bending elastic modulus of a cured product of the epoxy resin composition is 3.3 GPa or higher; (2) the bending strain at break of the cured product of the epoxy resin composition is 9% or higher; and (3) the fiber-reinforced plastic ? formed of the cured product of the epoxy resin composition and a reinforcing fiber substrate in which carbon fibers, which are continuous fibers, are evenly aligned in one direction has 90° bending strength of 95 MPa or higher, and a film, a prepreg, and fiber-reinforced plastic that are produced by using the epoxy resin composition.

Abstract: Provided is a fiber-reinforced resin laminate that is characterized by: comprising stacked layers of the (A) layer and the (B) layer that are indicated below; and by the value resulting from dividing the sum total of the thickness of the (A) layer by the sum total of the thickness of the (B) layer being 0.5-3.0. (A) layer: a laminate that comprises a prepreg in which reinforcing fibers are impregnated with a resin or a resin composition and wherein the product of the square of the volume fraction (Vf) of the reinforcing fibers and the average fiber length (Lamm) is greater than 2.0 mm and equal to or less than 15 mm. (B) layer: a sheet that comprises at least one composition selected from the group consisting of resin compositions and filler-containing resin compositions and wherein the product of the square of the volume fraction (Vf) of the filler and the average value (Lbmm) of the maximum length of the filler is 2.0 mm or less.

Abstract: Disclosed is a (meth)acrylate polymer having a volume average primary particle size of 0.520 to 3.00 ?m, a peak temperature of tan ? in the range of ?100 to 0° C., determined with dynamic viscoelasticity measurement, of ?40° C. or below, a peak height of tan ? in the range of ?100 to 0° C., determined with dynamic viscoelasticity measurement, of 0.300 or more, and an acetone-insoluble component of 99% by mass of more. This polymer has excellent dispersibility of primary particles in a resin, excellent storage stability of a resin composition obtained, and excellent insulating properties and reduction in elastic modulus of a molded article obtained.

Abstract: Provided is a low-tint (meth) acrylate aryl ester. This production method for (meth) acrylate aryl ester causes a specific hydroxyl group-containing aromatic compound and a (meth) acrylate anhydride to react, in the presence of a hindered phenol and a specific phosphite, and produces a (meth) acrylate aryl ester.

Abstract: Provided is a method for producing a cylindrical nanoimprinting mold such that the outer peripheral surface of a cylindrical aluminum substrate is uniformly polished, and it is possible to effectively take advantage of the outer peripheral surface. The method forms an oxide film at the outer peripheral surface (14) of an aluminum substrate (10) after polishing the entire outer peripheral surface (14) of the cylindrical aluminum substrate (10) by means of a polishing body (26), wherein the polishing body (26) is moved in the axial direction to polish in a manner such that at least a portion of the polishing body (26) is protruding beyond the first end (10a) side and second end (10b) side of the aluminum substrate (10), and the portion of the polishing body (26) protruding beyond the aluminum substrate (10) is disposed on and supported by a cylindrical first support member (18); and second support member (20).

Abstract: There is provided a dry-wet spinning device for an acrylic precursor fiber bundle for manufacturing carbon fibers, the device enabling stable spinning by making the coagulability of spun yarn (2) uniform by suppressing the vibration of the coagulating liquid surface to make the spun yarn (2) spun downward from a spinneret (1) without the liquid surface being in contact with the spinning surface of the spinneret less susceptible to an accompanying flow reflected by the bottom surface of a spinning bath. To this end, in the present invention, a horizontal flow straightening plate (8) produced from a porous plate or a plate material extending in the direction approximately perpendicular to the direction in which the spun yarn (2) is spun is disposed in a coagulation bath so as to surround the circumference of the yarn spun downward from the spinneret (1).

Abstract: A hollow fiber membrane-spinning nozzle that spins a hollow fiber membrane having a porous membrane layer and a support is provided in which the nozzle includes a resin flow channel through which a membrane-forming resin solution forming the porous membrane layer flows, the resin flow channel includes a liquid storage section that stores the membrane-forming resin solution and a shaping section that shapes the membrane-forming resin solution in a cylindrical shape and satisfies at least one of conditions (a) to (c): (a) the resin flow channel is disposed to cause the membrane-forming resin solution to branch and merge; (b) a delay means for delaying the flow of the membrane-forming resin solution is disposed in the resin flow channel; and (c) the liquid storage section or the shaping section includes branching and merging means for the membrane-forming resin solution therein.

Abstract: Disclosed is a method for producing a plastisol acrylic polymer which can have a satisfactory adhesion property even when the heating time is short and the heating temperature is low, and which has excellent storage stability. The method comprises (1) a step of polymerizing an acrylic monomer mixture (a) to produce a polymer (A) and (2) a step of polymerizing an acrylic monomer mixture (b) in a dispersion containing the polymer (A), wherein a monomer having a hydroxy group is contained in the acrylic monomer mixture (a), a monomer having an acetoacetyl group or a block isocyanate group is contained in the acrylic monomer mixture (b), and the dissolution parameter (SA) for the polymer (A) and the dissolution parameter (SB) for a polymer (B) produced by the polymerization of the acrylic monomer mixture (b) are different from each other.

Abstract: To provide a novel compound having both a surface-activating ability and a polymerization controlling ability. A compound represented by the following general formula (1) or (2): wherein, R1 and R3 are an organic group having the hydrophile-lipophile balance (HLB) determined by Griffin's method of 3 or more. The definitions of R1, R2, R3, R4, Z, p and q are described in the Description.

Abstract: An optical fiber cable is formed with an optical fiber and a coating layer made up of at least one layer provided on the outer periphery of the optical fiber. The material for forming the coating layer is made of a halogen-free resin composition containing polyolefin resin (A) and melt tension enhancer (B).

Abstract: Disclosed is a method for producing a plastisol acrylic polymer which can have a satisfactory adhesion property even when the heating time is short and the heating temperature is low, and which has excellent storage stability. The method comprises (1) a step of polymerizing an acrylic monomer mixture (a) to produce a polymer (A) and (2) a step of polymerizing an acrylic monomer mixture (b) in a dispersion containing the polymer (A), wherein a monomer having a hydroxy group is contained in the acrylic monomer mixture (a), a monomer having an acetoacetyl group or a block isocyanate group is contained in the acrylic monomer mixture (b), and the dissolution parameter (SA) for the polymer (A) and the dissolution parameter (SB) for a polymer (B) produced by the polymerization of the acrylic monomer mixture (b) are different from each other.

Abstract: Provided are an acrylic fiber suitable for a step pile fabric such as a high-pile textile, a spun yarn containing said fiber, and a pile fabric in which said spun yarn is used. In the present invention, the acrylic fiber is a high-shrinkage acrylic fiber having a single-filament fineness of 1-7 dtex, a shrinkage of 20-40%, and post-shrinking bulkiness of 0.19×101-0.30×101 mm3/g; or an acrylic fiber having a single-filament fineness of 2-7 dtex, elongation of 50-70%, and bulkiness of 0.19×101-0.30×101 mm3/g.