Abstract: Provided is a compound functioning as a leveling agent which imparts high smoothness to a coating film without causing a defect in the surface of the coating film. Specifically, the compound has a polymer block of a polymerizable monomer at both ends of a silicone chain.

Abstract: Provided is a polymer functioning as a leveling agent that imparts high smoothness to a coating film.

Abstract: Provided is a polymer functioning as a leveling agent that imparts high smoothness to a coating film without causing a defect on the surface of the coating film. Specifically, a silicone chain-containing polymer having a silicone chain on one terminal, in which the silicone chain has a number average molecular weight in a range of 2000 to 20000, and a polymerizable unsaturated group is not contained.

Abstract: Provided is a polymer functioning as a leveling agent that imparts high smoothness to a coating film. Specifically, a polymer containing a polymer block (A1) of a polymerizable monomer (a1) having a functional group represented by —Si[OSi(R)3]n[R?]3-n (n is an integer of 1 to 3, each R independently represents an alkyl group having 1 to 3 carbon atoms, and each R? independently represents an alkyl group having 1 to 3 carbon atoms). Also provided are a coating composition, a resist composition, and an article containing the polymer.

Abstract: [PROBLEMS] To provide a multistage apparatus used in a liquid-liquid system comprising two liquid phases that do not mix with each other, in which the position of the interface (liquid-liquid interface) of a heavy liquid phase and a light liquid does not fluctuate or else is suppressed, and a method of producing a specific substance using it. [SOLVING MEANS] An apparatus having a connected body of a plurality of adjacent containers or two or more stages installed in a single-piece container in which a plurality of partitions are arranged inside thereof, and a method of producing a specific substance using it.

Abstract: It is an object of the present invention to provide a urethane (meth)acrylate that enables formation of a cured layer having a low reflectance and excellent excoriation resistance, a curable composition produced by using the same, and an antireflective film. In particular, there is provided a fluorine-containing urethane (meth)acrylate represented by General Formula (I) and having a fluorine atom content ranging from 25 to 60 mass % (where R1 and R2 each represent a specific fluorinated alkyl group, R3 and R4 each represent a hydrogen atom or a methyl group, A represents a trivalent linking group represented by any of Structural Formulae (A1) to (A4), and X and Y each independently represent a divalent linking group represented by any of Structural Formulae (a) to (c)) [in Structural Formula (c), R5 represents an alkyl group having 1 to 6 carbon atoms].

Abstract: It is an object of the present invention to provide a urethane (meth)acrylate that enables formation of a cured layer having a low reflectance and excellent excoriation resistance, a curable composition produced by using the same, and an antireflective film. In particular, there is provided a fluorine-containing urethane (meth)acrylate represented by General Formula (I) and having a fluorine atom content ranging from 25 to 60 mass % (where R1 and R2 each represent a specific fluorinated alkyl group, R3 and R4 each represent a hydrogen atom or a methyl group, A represents a trivalent linking group represented by any of Structural Formulae (A1) to (A4), and X and Y each independently represent a divalent linking group represented by any of Structural Formulae (a) to (c)) [in Structural Formula (c), R5 represents an alkyl group having 1 to 6 carbon atoms].

Abstract: The present invention provides a fluorine-containing curable resin that can impart high stain resistant properties to the surface of a cured coating film and can exhibit high stain resistant properties even when curing is performed in an air atmosphere (in the presence of oxygen). It is also an object to provide an active-energy-ray-curable composition that uses the fluorine-containing curable resin and can exhibit high stain resistant properties even when curing is performed in an air atmosphere and a cured product of the active-energy-ray-curable composition. To achieve the object, there is provided a fluorine-containing curable resin including a poly(perfluoroalkylene ether) chain, a maleimide group, and a mercapto group in a structure of a urethane polymer or a polymer composed of a monomer having a polymerizable unsaturated group.

Abstract: Provided is a curable fluorine-containing resin produced by causing a reaction between a polymer (P) and a compound (C); the polymer (P) being prepared by copolymerization in which essential monomer components are a compound (A) having a poly(perfluoroalkylene ether) chain and styryl groups at both ends of the poly(perfluoroalkylene ether) chain and a polymerizable unsaturated monomer (B) having at least one functional group (b) selected from the group consisting of a hydroxy group, an isocyanate group, an epoxy group, a carboxyl group, an acid anhydride group, and a carboxylic acid halide group; the compound (C) having a polymerizable unsaturated group and at least one functional group (c) that has reactivity with the functional group (b) and is selected from the group consisting of a hydroxy group, an isocyanate group, an epoxy group, a carboxyl group, an acid anhydride group, and a carboxylic acid halide group.

Abstract: The present invention provides a fluorine-containing curable resin that can impart high stain resistant properties to the surface of a cured coating film and can exhibit high stain resistant properties even when curing is performed in an air atmosphere (in the presence of oxygen). It is also an object to provide an active-energy-ray-curable composition that uses the fluorine-containing curable resin and can exhibit high stain resistant properties even when curing is performed in an air atmosphere and a cured product of the active-energy-ray-curable composition. To achieve the object, there is provided a fluorine-containing curable resin including a poly(perfluoroalkylene ether) chain, a maleimide group, and a mercapto group in a structure of a urethane polymer or a polymer composed of a monomer having a polymerizable unsaturated group.

Abstract: Provided is a fluorine-based surfactant including a copolymer synthesized by copolymerizing, as essential monomers, a polymerizable monomer (A) having a poly(perfluoroalkylene ether) chain and polymerizable unsaturated groups at both ends of the chain and a polymerizable monomer (B) having an oxyalkylene group and a polymerizable unsaturated group. The fluorine-based surfactant cannot structurally generate PFOS or PFOA, which tend to accumulate in the environment and living bodies; even when the fluorine-based surfactant has lower fluorine content than surfactants having a fluoroalkyl group having 8 or more carbon atoms, the fluorine-based surfactant has a higher capability of decreasing surface tension than the surfactants. Accordingly, the fluorine-based surfactant can be suitably used as a leveling agent for a coating composition, a resist composition, or the like.

Abstract: A fluorine-containing novolac resin represented by the following formula, as well as a fluorine based surfactant and a fluorine based surfactant composition, which include the fluorine-containing novolac resin. In the formula, R represents a fluorinated alkyl-containing substituent, R? represents a hydrogen atom or a methyl group, R? represents a hydrogen atom or a non-fluorinated substituent, —X— represents any one of following four types of linking groups, —X? represents any one of three following types of substituents, n represents 0 or an integer of 1 or more, m represents an integer of 1 or more, and n+m is an integer of 2 or more.

Abstract: A UV-curable composition for optical discs contains a fluorine-containing UV-curable resin having a poly(perfluoroalkylene ether) chain and a UV-curable group. The fluorine-containing UV-curable resin exhibits good compatibility with the composition and satisfactorily localizes in and near a surface of a coating film. Thus, the composition can be used to form an outermost layer of an optical disc such that the droplet size of grease such as that constituting fingerprints adhering to the outermost layer is reduced and scattering of light having a short oscillation wavelength passing through the outermost layer is suppressed. Accordingly, an optical disc on and from which signals can be satisfactorily recorded and read is formed.

Abstract: Provided is a curable fluorine-containing resin produced by causing a reaction between a polymer (P) and a compound (C); the polymer (P) being prepared by copolymerization in which essential monomer components are a compound (A) having a poly(perfluoroalkylene ether) chain and styryl groups at both ends of the poly(perfluoroalkylene ether) chain and a polymerizable unsaturated monomer (B) having at least one functional group (b) selected from the group consisting of a hydroxy group, an isocyanate group, an epoxy group, a carboxyl group, an acid anhydride group, and a carboxylic acid halide group; the compound (C) having a polymerizable unsaturated group and at least one functional group (c) that has reactivity with the functional group (b) and is selected from the group consisting of a hydroxy group, an isocyanate group, an epoxy group, a carboxyl group, an acid anhydride group, and a carboxylic acid halide group.

Abstract: A method of improving earthquake resistance of existing spillway piers provided in a dam. The method includes a following step. End portions of a main beam and top portions of existing spillway piers are connected to each other with a high damping device having a history damping property with high primary rigidity. The high damping device has a yield displacement amount in seismic velocity smaller than a tolerance of a displacement amount of the existing spillway piers. The high damping device has a yield load value in seismic velocity greater than a maximum seismic force generated therein in a bridge-axis direction due to a large-scale earthquake.

Abstract: A UV-curable composition for optical discs contains a fluorine-containing UV-curable resin having a poly(perfluoroalkylene ether) chain and a UV-curable group. The fluorine-containing UV-curable resin exhibits good compatibility with the composition and satisfactorily localizes in and near a surface of a coating film. Thus, the composition can be used to form an outermost layer of an optical disc such that the droplet size of grease such as that constituting fingerprints adhering to the outermost layer is reduced and scattering of light having a short oscillation wavelength passing through the outermost layer is suppressed. Accordingly, an optical disc on and from which signals can be satisfactorily recorded and read is formed.

Abstract: The present invention relates to an active-energy-ray-curable coating composition containing, as essential components, a radical-polymerizable resin (I) containing a polymer structure (?) of a radical-polymerizable unsaturated monomer and a poly(perfluoroalkylene ether) chain (?), and having a resin structure in which a plurality of the polymer structures (?) are linked to each other with the poly(perfluoroalkylene ether) chain (?) therebetween and the polymer structures (?) each have a radical-polymerizable unsaturated group at a side chain thereof; and a polymerization initiator (II). The active-energy-ray-curable coating composition can be used as a coating material that imparts surface properties such as stain-proof properties.

Abstract: The present invention relates to an active-energy-ray-curable coating composition containing, as essential components, a radical-polymerizable resin (I) containing a polymer structure (?) of a radical-polymerizable unsaturated monomer and a poly(perfluoroalkylene ether) chain (?), and having a resin structure in which a plurality of the polymer structures (?) are linked to each other with the poly(perfluoroalkylene ether) chain (?) therebetween and the polymer structures (?) each have a radical-polymerizable unsaturated group at a side chain thereof; and a polymerization initiator (II). The active-energy-ray-curable coating composition can be used as a coating material that imparts surface properties such as stain-proof properties.

Abstract: A fluorine-containing novolac resin represented by the following formula, as well as a fluorine based surfactant and a fluorine based surfactant composition, which include the fluorine-containing novolac resin. In the formula, R represents a fluorinated alkyl-containing substituent, R? represents a hydrogen atom or a methyl group, R? represents a hydrogen atom or a non-fluorinated substituent, —X— represents any one of following four types of linking groups, —X? represents any one of three following types of substituents, n represents 0 or an integer of 1 or more, m represents an integer of 1 or more, and n+m is an integer of 2 or more.

Abstract: A wireless communication system for high-speed motion use, capable of shortening the frequency channel search time and increasing the communication time available for service. The system includes an access point communicating on a designated one frequency channel and a mobile terminal communicating on the same received channel by receiving radio waves transmitted by the same access point. As for mobile terminal, in a storage, priority data is stored for a channel search in which arbitrary priorities can be set respectively for the channels. Frequency channel search sequence data, set up so that the number of times of appearance becomes greater for channels for which the priority data are set higher, are generated on the basis of the relative data, and a search of communication-capable channels is carried out in accordance with the same channel search sequence data.