Abstract: A diverting agent and method for temporarily filling fractures. The diverting agent contains a powder-like polyvinyl alcohol-based resin (P1) and a pellet-like polyvinyl alcohol-based resin (P2), and has an adsorption coefficient kc of 0.01 or more and 1 or less.

Abstract: A diverting agent which has performance to release filling due to biodegradability, can be quickly removed after a certain period of time, and has an excellent filling property with respect to a fracture in a well is provided. The diverting agent contains particles having a particle diameter of 1,700 ?m or more in an amount of 10 to 70 mass %, particles having a particle diameter of 500 ?m or more and less than 1,700 ?m in an amount of 20 to 80 mass %, and particles having a particle diameter of less than 250 ?m in an amount of 5 to 40 mass %, and the diverting agent contains a biodegradable resin in an amount of 10 mass % or more.

Abstract: A resin composition containing: a hydrophilic resin; and a metal compound, wherein a mass ratio between a content of the hydrophilic resin and a content of the metal compound in terms of metal (a content of the hydrophilic resin:a content of the metal compound in terms of metal) is 90:10 to 20:80.

Abstract: An object of the present invention is to provide a diverting agent having an excellent filling property against various fractures. The diverting agent of the present invention contains a powder-like polyvinyl alcohol-based resin (P1) and a pellet-like polyvinyl alcohol-based resin (P2), and has an adsorption coefficient kc of 0.01 or more and 1 or less, which is obtained by a method including steps (i) to (iii). (The steps (i) to (iii) are the same as those described in the description.

Abstract: An object of the present invention is to provide a diverting agent which has performance to release filling due to biodegradability, can be quickly removed after a certain period of time, and has an excellent filling property with respect to a fracture in a well. The diverting agent according to the present invention contains particles having a particle diameter of 1,700 ?m or more in an amount of 10 to 70 mass %, particles having a particle diameter of 500 ?m or more and less than 1,700 ?m in an amount of 20 to 80 mass %, and particles having a particle diameter of less than 250 ?m in an amount of 5 to 40 mass %, and the diverting agent contains a biodegradable resin in an amount of 10 mass % or more.

Abstract: As a molded article that has gas barrier properties even if a gas barrier layer is not provided and that also has molding stability and biodegradability, there is proposed a molded article containing an aliphatic polyester-based resin (A) and a polyvinyl alcohol-based resin (B) as main component resins, wherein the molded article has a resin phase-separated structure having a continuous phase including the aliphatic polyester-based resin (A) as a main component, and a ribbon-like dispersed phase including the polyvinyl alcohol-based resin (B) as a main component.

Abstract: An object of the present invention is to provide a resin composition which is capable of melt molding multiple times and thus has excellent recyclability. The resin composition of the present invention contains a polylactic acid (A), an acid-modified aliphatic polyester-based resin (B) and a polyvinyl alcohol-based resin (C), in which a content of the acid-modified aliphatic polyester-based resin (B) is 0.3 to 15 parts by weight with respect to 100 parts by weight of the polylactic acid (A) and a content of the polyvinyl alcohol-based resin (C) is 0.3 to 10 parts by weight with respect to 100 parts by weight.