Denka Co. Ltd. (TYO:4061) has concluded a technology licensing agreement with Agilyx Corp., a global plastic recycling company based in Portland, Oregon, for a chemical recycling project involving used polystyrene from Toyo Styrene Co. Ltd., an equity-method investee of Denka. Denka has begun serious planning for the construction of demonstration equipment at its plant in Ichihara, Chiba Prefecture, that would…