Abstract: A curable sheet composition able to follow up a mold shape under the application of heat and pressure, able to polymerize and cure upon being irradiated with light, permitting an optical element molding pattern to be fixed, and comprising 50% to 94% of a polycarbonate diol-modified urethane acrylate oligomer, 5% to 40% of a (meth)acrylate containing at least one carboxyl group in each molecule thereof, and 0.5% to 5% of a photopolymerization initiator.

Abstract: A material pressure feeding apparatus 10 includes a container 12 for receiving a bag 11, in which a viscous material M is contained, a press member 13 exerting a pressing force on the material, a pressure feeder 15 pressure-feeding, to the outside, the material M sucked by the pressing force by the press member 13, and an annular member 16 positioned on the outer peripheral side of the press member 13. The press member 13 has a supporting space S on the outer peripheral side thereof, and a ring portion 40 constituting an annular member 16 is supported in the supporting space S in a relatively movable state. Thus, even when the press member 13 is inclined, the annular member 16 is configured so as not to form a clearance between it and the inner peripheral surface of the container 12 without any influence of the inclination.

Abstract: The present invention relates to a photocurable silicone gel composition includes: (A) an organopolysiloxane having at least one group represented by the following general formula (1): in which R1 and R2 each represent hydrogen or an alkyl group having a carbon number of 1 to 20, in an amount of 100 parts by mass; (B) a mercaptoalkyl group-containing organopolysiloxane in an amount of parts by mass such that the number of moles of the mercaptoalkyl group is 0.01 to 1.0 mole per 1 mole of the group represented by the general formula (1) in the component (A); (C) a photopolymerization initiator in an amount of 0.01 to 20 parts by mass per 100 parts by mass of the component (A); and (D) a hindered amine compound having a group represented by the following general formula (2): in which R3 to R6 each represent hydrogen or an alkyl group having a carbon number of 1 to 20, and R7 represents hydrogen or —CH2—R8 in which R8 represents hydrogen or a monovalent organic group, in an amount of 0.

Abstract: The present invention relates to a curable composition including: (a) at least one compound having at least one (meth)acrylic functional group in the molecule thereof, which is selected from a (meth)acrylic monomer and a (meth)acrylic oligomer; (b) an organic peroxide; (c) an o-benzoic sulfimide; and (d) an oxazoline compound, in which the component (d) is contained in an amount of 0.005 to 10 parts by mass based on 100 parts by weight of the component (a).

Abstract: In the past, it was difficult to fix an adherend sufficiently during polishing processing and to peel off the adherend conveniently. Provided is a non-reactive temporary fixing composition for plane polishing having a shear strength of not less than 0.05 MPa and a peeling strength of less than 100 N.

Abstract: The present invention relates to an aminimide compound having a structure represented by the following general formula (I) in the molecule thereof, relates to a curable composition using the aminimide compound and relates to a method for curing the composition; in which R0 represents a hydrogen atom, an alkyl group which may have an optional substituent, an aryl group which may have an optional substituent, or a heterocyclic residue which may have an optional substituent. R1, R2 and R3 each independently represent a hydrogen atom, or an optional substituent. However, at least two of R1, R2 and R3 may bond to each other to form a cyclic structure.

Abstract: An object of the present invention is to provide a curable composition excellent in on-site formability, excellent in heat resistance, chemical resistance and oil resistance, and low in compression set. The invention relates to a curable composition comprising (a) a vinyl-based polymer containing at least one (meth)acryloyl group in a molecule thereof and having a number average molecular weight of 500 to 1,000,000, (b) an ethylenic unsaturated group-containing compound, (c) a thixotropic property-imparting agent, (d) fumed silica surface-treated with a (meth)acryloyl group-containing silane and (e) a photopolymerization initiator.

Abstract: The present invention relates to an aqueous coating composition having excellent coating adhesion, workability, heat resistance and chemical resistance, and has an object to provide an aqueous coating composition for sealing, which is suitable for members to be screwed in. The present invention relates to an aqueous coating composition including: as main components, component (A) an ethylene-vinyl acetate copolymer resin emulsion and component (B) two or more PTFE resin powders having different particle diameters, in which 35 to 80 parts by mass of water is contained on the basis of 100 parts by mass of the total of (A) and (B).

Abstract: A photocurable resin composition for sealing an organic EL device is provided, which can seal the organic EL device without exerting any bad influence on the device, thereby suppress the formation and growth of dark spots positively, and which can ensure a high transmittance of light, thereby maintain a stable light emitting characteristic over a long period of time. The composition comprises (A) an epoxy resin containing at least two glycidyl groups in each molecule thereof and having a molecular weight of 200 to 7000, (B) an epoxy resin containing at least one glycidyl group in each molecule thereof and having a molecular weight of 20000 to 100000, (C) a latent acid photo catalyst adapted to be activated and produce an acid upon being irradiated with energy beam, and (D) a silane coupling agent containing a glycidyl group in each molecule thereof, the composition exhibiting non-fluidity at 25° C., but exhibiting fluidity in a temperature range of 50° to 100° C.

Abstract: An object of the present invention is to provide a curable composition excellent in on-site formability, excellent in heat resistance, chemical resistance and oil resistance, and low in compression set. The invention relates to a curable composition comprising (a) a vinyl-based polymer containing at least one (meth)acryloyl group in a molecule thereof and having a number average molecular weight of 500 to 1,000,000, (b) an ethylenic unsaturated group-containing compound, (c) a thixotropic property-imparting agent, (d) fumed silica surface-treated with a (meth)acryloyl group-containing silane and (e) a photopolymerization initiator.

Abstract: The present invention provides a curable composition comprising (a) a vinyl-based polymer containing, in its molecule, at least one alkenyl group which can be hydrosilylated, and having a number average molecular weight of 500 to 1,000,000, (b) a hydrosilyl group-containing compound and (c) a silicone powder, and a sealing method using the curable composition. According to the invention, there can be provided a curable composition excellent in on-site formability, excellent in heat resistance, chemical resistance and oil resistance, and low in compression set.

Abstract: An object of the present invention is to provide a damping and soundproofing member not only excellent in an excellent damping and soundproofing effect but also excellent in easiness of forming thereof, especially capable of forming directly a damping and soundproofing layer on a substance to be adhered and further excellent in lightness, washing ability, durability, and the like. The invention relates to a structure formed by laminating cured product layers formed from plurality of fluid resin compositions on a substrate expecting a damping or soundproofing effect, wherein at least two cured product layers of the above cured product layers are different in hardness. Moreover, preferably, no part of the hardest layer in the above cured product layers is directly formed on the substrate and the hardest layer is formed on the substrate via an intermediate layer.

Abstract: A material application apparatus 10 comprises a base 11 on which a workpiece W is placed, a syringe 13 that applies a material onto a movement track L, a movement structure 14 that moves the syringe 13 in three orthogonal axes directions, a rotation mechanism 15 that rotates the syringe 13 around the axis line of the syringe 13, and a control unit 17 that controls the movement structure 14 and the rotation mechanism 15 in accordance with a configuration of the track L. The syringe 13 includes a nozzle 19 provided to the front-end side of a main body 18 that contains a sealing agent or a material of resin used as an adhesive agent or the like. The discharge port 21 of the nozzle 19 is formed into a generally acute-angled triangle configuration to discharge the material so that a bead B having a sectional configuration in which the height is larger than 0.9 compared to the width of 1 can be formed. Also, the nozzle is adapted so as to be rotated in the periphery direction thereof by a motor M.

Abstract: In a coating for the inspection of a crack in a structure wherein a coating layer having dispersed therein microcapsules with a visualizing liquid sealed therein is formed on the surface of the structure and when a crack is developed in the structure and propagated to the coating layer, the microcapsules dispersed in the coating layer are ruptured and the visualizing liquid flows out from the ruptured microcapsules and reaches the surface of the coating layer along the crack in the coating layer, thereby making it possible to detect the occurrence of the crack in the structure: at least one second coating layer not containing the microcapsules is formed over the first coating layer with the microcapsules dispersed therein, the second coating layer being transparent and having an outermost layer flexible enough to be prevented from being cracked even upon cracking in the first coating layer.

Abstract: A material pressure feeding apparatus 10 includes a sack 11 containing material M having predetermined viscosity, a container 12 for holding the sack 11, a press member 13 disposed within the container 12 and positioned on the sack 11, a pressure feeder 15 having a suction port 37A for sucking the material M for lowering the press member 13 to pressurize the sack 11 containing the material M. The press member 13 includes a plate 21 having a plane-shape substantially identical to the opening 19 of the container 12, and a tubular member 22 along the inner peripheral side surface of the container 12, hanging vertically from the outer periphery of the plate 21 and forms a reception space 23. The press member 13 descends to reduce the volume of sack 11 forming wrinkled portion S and the wrinkled portion S is settled in the reception space 23.

Abstract: A composition for use as a self-locking agent is provided which comprises an aqueous dispersion of the following ingredients dissolved and dispersed in water: (a) a polyamide powder insoluble or slightly soluble in water, (b) an isocyanate compound, (c) a surfactant and (d) a water-soluble polyamide. The composition permits a polyamide resin layer of a smooth surface to be formed on a screw surface of a to-be-coated member. With use of the composition, it is possible to prevent slippage and sagging of the resin layer coated on the screw surface and improve the precision in resin coating processing.

Abstract: A method of laminating first and second members to each other includes the steps of applying a resin material to a plurality of regions on the laminating surface of at least one of the first and second members such that an air escape passage extending in a predetermined direction is formed; providing a laminating force to the first and second members along the extending direction of the air escape passage in a state where the first and second members are disposed with their laminating surfaces opposed to each other, so that air is expelled toward the outside through the air escape passage and the applied resin material is made to be continuous so as to form a thin film layer; and then laminating the first and second members to each other.

Abstract: A sealing method wherein sealing agent composition comprises: (A) organopolysiloxane having at least two silicon atom bonded alkenyl groups in one molecule; (B) organohydrogen polysiloxane having at least two silicon atom bonded hydrogen atoms in one molecule; (C) fumed silica of a specified amount with respect to the components (A) and (B); and (D) an inorganic filler of a specified amount with respect to the components (A) and (B), in which the rocker and the cylinder block are pressed such that a hardness of the sealing agent in a cured state is 60 to 80 with a type A durometer of JIS K 6253 and a compression rate of the sealing agent becomes 20 to 40%.

Abstract: Anaerobically curable compositions comprising: (a) a polymerizable monomer having a functional group represented by the general formula: H2C=C(R)? (wherein R is a hydrogen atom or a methyl group) at a terminal of its molecule; (b) an organic peroxide; (c) o-benzoic sulfimide; and (d) a salt selected from the group consisting of sodium salts, potassium salts and calcium salts of weakly acidic substances, have a high curing rate and high bonding strength despite of having high storage stability. In particular, the composition can rapidly bond even adherends such as inactive metals and plastics, with which conventional anaerobically curable compositions are hardly cured.

Abstract: The invention provides a vibration-absorbing silicone gel composition mainly comprising: 100 parts by weight of (a) an organopolysiloxane having a (meth)acryloyl group in its molecule; from 5 to 100 parts by weight of (b) an organopolysiloxane unreactive with ingredient (a); from 1 to 50 parts by weight of (c) an amorphous pulverization product of a three-dimensionally crosslinked silicone resin; from 1 to 20 parts by weight of (d) a fumed silica; and an effective amount of (e) a polymerization initiator, as a gel composition which has high vibration-absorbing properties and high shape retention and which can be used as, e.g., a vibration-absorbing damper even when it is not sealed up in a container or bag.