Abstract: A monitoring satellite system includes a space development agency (SDA) satellite investigating a threat object; and a monitoring satellite group including a plurality of monitoring satellites that orbit the Earth at intervals from each other and monitor flying objects, wherein each monitoring satellite monitors the flying object when at a location that allows monitoring of the flying object, and the monitoring satellite, upon discovering the threat object to the flying object while monitoring the flying object, transmits information about the threat object to the other monitoring satellites, the information about the threat object is a mission command that instructs the SDA satellite to investigate the threat object, and of the multiple monitoring satellites that transmit or receive the mission command, the monitoring satellite that is in a location that allows communication with the SDA satellite transmits the mission command to the SDA satellite.

Abstract: A resin composition for secondary coating of an optical fiber comprises at least one polyoxyalkylene monoalkyl ether compound selected from the group consisting of a polyoxyalkylene monoalkyl ether having a number average molecular weight of 2500 or more and 10000 or less and a derivative of the polyoxyalkylene monoalkyl ether, a photopolymerizable compound, and a photopolymerization initiator.

Abstract: Provided is a blood purification apparatus that returns blood in a blood circuit to a body. A blood purification apparatus includes: a blood circuit and a dialysate circuit coupled to each other through a blood purifier; an air introduction route coupled to the dialysate circuit; an air introducer provided to any of the dialysate circuit and the air introduction route and configured to set the dialysate circuit to a positive pressure by introducing air into the dialysate circuit through the air introduction route; and a controller configured to control the air introducer in such a way as to feed a dialysate from the dialysate circuit to the blood circuit, and to control the blood circuit and the dialysate circuit in such a way as to return blood in the blood circuit and the blood purifier to a body by feeding the dialysate from the dialysate circuit to the blood circuit.

Abstract: A resin composition for primary coating of an optical fiber contains a photopolymerizable compound containing a difunctional urethane (meth)acrylate and a monofunctional urethane (meth)acrylate, and a photopolymerization initiator, the difunctional urethane (meth)acrylate is a reaction product of a diol, a diisocyanate, and a hydroxyl group-containing (meth)acrylate, and the monofunctional urethane (meth)acrylate is a reaction product of a polyoxyalkylene monoalkyl ether, a diisocyanate, and a hydroxyl group-containing (meth)acrylate, or a reaction product of a polyoxyalkylene monoalkyl ether and an isocyanate group-containing (meth)acrylate.

Abstract: A resin composition for primary coating of an optical fiber contains a photopolymerizable compound containing a urethane (meth)acrylate containing a reaction product of a polypropylene polyol having a number average molecular weight of 8000 or more and 20000 or less and an isocyanate group-containing (meth)acrylate and a photopolymerization initiator.

Abstract: An optical fiber comprises a glass fiber comprising a core and a cladding, a primary resin layer being in contact with the glass fiber and covering the glass fiber, and a secondary resin layer covering the primary resin layer, wherein the Young's modulus of the primary resin layer is 0.04 MPa or more and 1.0 MPa or less at 23° C.±2° C., the secondary resin layer consists of a cured product of a resin composition comprising a base resin containing a urethane (meth)acrylate oligomer, a monomer, and a photopolymerization initiator and hydrophobic inorganic oxide particles, and the content of the inorganic oxide particles is 1% by mass or more and 60% by mass or less based on the total amount of the resin composition.

Abstract: A resin composition for primary coating of an optical fiber contains a photopolymerizable compound including a urethane (meth)acrylamide, and a photopolymerization initiator, and the urethane (meth)acrylamide has a (meth)acrylamide group at at least one end of a urethane bond.

Abstract: A resin composition for primary coating of an optical fiber includes a photopolymerizable compound and a photopolymerization initiator. The photopolymerizable compound includes a urethane oligomer and an N-vinyl compound represented by the formula (I) below: (where R represents an alkyl group having 1 to 5 carbon atoms).

Abstract: A resin composition for secondary coating of an optical fiber includes a photopolymerizable compound including a urethane (meth)acrylamide, and a photopolymerization initiator. The urethane (meth)acrylamide has a (meth)acrylamide group at at least one end of a urethane bond.

Abstract: A resin composition for secondary coating of an optical fiber contains a photopolymerizable compound and a photopolymerization initiator, wherein the photopolymerizable compound contains: a urethane (meth)acrylate that is a reaction product of a polyol having a number average molecular weight of 300 or more and 1200 or less, a diisocyanate, and a hydroxyl group-containing (meth)acrylate; a bisphenol skeleton-containing (meth)acrylate; and a monofunctional (meth)acrylate in which a glass transition temperature of a homopolymer of the monofunctional (meth)acrylate is ?60° C. or more and 15° C. or less; and when the resin composition is ultraviolet-cured under conditions of an accumulated amount of light of 1000 mJ/cm2 and an illumination of 1000 mW/cm2 to form a resin film, the Young's modulus of the resin film is 1200 MPa or more and 3000 MPa or less at 23° C., and the glass transition temperature of the resin film is 70° C. or more and 105° C. or less.

Abstract: A resin composition for the secondary coating of an optical fiber is a resin composition containing a non-reactive urethane compound having a number average molecular weight of 10000 or more and 50000 or less, a photopolymerizable compound, and a photopolymerization initiator, the content of the non-reactive urethane compound is 0.05 parts by mass or more and 5 parts by mass or less based on the total amount of the resin composition, and the non-reactive urethane compound is a reaction product of a polyol having a number average molecular weight of 8000 or more and 20000 or less, a diisocyanate, and a compound having active hydrogen.

Abstract: A resin composition comprises a base resin containing an urethane (meth)acrylate oligomer, a monomer having a phenoxy group, and a photopolymerization initiator, and hydrophobic inorganic oxide particles, wherein the viscosity is 300 mPa·s or more and 4200 mPa·s or less at 45° C. and the content of the monomer having a phenoxy group is 1% by mass or more and 30% by mass or less based on the total amount of the base resin.

Abstract: A resin composition for secondary coating of an optical fiber is a resin composition comprising: a non-reactive urethane compound having a number average molecular weight of 10000 or more and 40000 or less, a photopolymerizable compound, and a photopolymerization initiator, wherein the content of the non-reactive urethane compound is 0.05 parts by mass or more and 10 parts by mass or less based on the total amount of the resin composition of 100 parts by mass, and the non-reactive urethane compound is a reaction product of a polyol having a number average molecular weight of 1800 or more and 4500 or less, a diisocyanate, and a compound having active hydrogen.

Abstract: This resin composition for secondary coating of an optical fiber contains: at least one type of polyoxyalkylene monoalkyl ether compound selected from the group consisting of a polyoxyalkylene monoalkyl ether having a number average molecular weight of 2500-10,000 and a derivative of said polyoxyalkylene monoalkyl ether; a photopolymerizable compound; and a photopolymerization initiator.

Abstract: A resin composition for secondary coating of an optical fiber is a resin composition comprising: a photopolymerizable compound comprising a urethane (meth)acrylate having a number average molecular weight of 10000 or more and 40000 or less; and a photopolymerization initiator, the content of the urethane (meth)acrylate is 0.05 parts by mass or more and 15 parts by mass or less based on the total amount of the resin composition of 100 parts by mass, and the urethane (meth)acrylate is a reaction product of a polyol having a number average molecular weight of 1800 or more and 4500 or less, a diisocyanate, and a hydroxyl group-containing (meth)acrylate.

Abstract: A resin composition comprises a base resin containing a urethane (meth)acrylate oligomer, a monomer and a photopolymerization initiator, and a hydrophobized spherical inorganic oxide, wherein the inorganic oxide is dispersed in the resin composition and a content of the inorganic oxide is 1 to 60% by mass based on a total amount of the resin composition.

Abstract: The method for producing a resin composition for a secondary coating of an optical fiber comprises a step of reacting a polyol, a diisocyanate and a hydroxyl group-containing (meth)acrylate in the presence of a (meth)acrylate not having a hydroxyl group to obtain a mixture of urethane (meth)acrylate and the (meth)acrylate not having a hydroxyl group, and a step of adding a photopolymerization initiator to the mixture to obtain a resin composition, and a hydroxyl value of the (meth)acrylate not having a hydroxyl group is 12.0 mgKOH/g or less.

Abstract: A resin composition comprises a base resin containing a urethane (meth)acrylate oligomer, a monomer and a photopolymerization initiator, and a hydrophobized spherical inorganic oxide, wherein the inorganic oxide is dispersed in the resin composition and a content of the inorganic oxide is 1 to 60% by mass based on a total amount of the resin composition.

Abstract: An optical fiber comprises a glass fiber comprising a core and a cladding, a primary resin layer being in contact with the glass fiber and covering the glass fiber, and a secondary resin layer covering the primary resin layer, wherein the Young's modulus of the primary resin layer is 0.04 MPa or more and 1.0 MPa or less at 23° C.±2° C., the secondary resin layer consists of a cured product of a resin composition comprising a base resin containing a urethane (meth)acrylate oligomer, a monomer, and a photopolymerization initiator and hydrophobic inorganic oxide particles, and the content of the inorganic oxide particles is 1% by mass or more and 60% by mass or less based on the total amount of the resin composition.

Abstract: A resin composition comprises a base resin containing an urethane (meth)acrylate oligomer, a monomer having a phenoxy group, and a photopolymerization initiator, and hydrophobic inorganic oxide particles, wherein the viscosity is 300 mPa·s or more and 4200 mPa·s or less at 45° C. and the content of the monomer having a phenoxy group is 1% by mass or more and 30% by mass or less based on the total amount of the base resin.