Abstract: The present invention relates to equipment for preparing a polyolefin elastomer including a reactor to which a solvent and a raw material are supplied, a primary devolatilizer which devolatilizes a product discharged from the reactor to remove an unreacted material (primary devolatilization recovery flow), and to discharge the remainder thereof (primary devolatilization preparation flow), a secondary devolatilizer which re-devolatilizes the primary devolatilization preparation flow discharged from the primary devolatilizer to further remove an unreacted material (secondary devolatilization recovery flow), and to discharge the remainder thereof (secondary devolatilization preparation flow), a finisher which scrubs, using water, the secondary devolatilization preparation flow discharged from the secondary devolatilizer, so that the unreacted material and the water are evaporated and a polymer product remains, and a flash drum which removes low-molecular materials (impurity removal flow) from the primary devolat

Abstract: Provided is a method of manufacturing an ethylene vinyl alcohol copolymer, the method including: introducing a monomer including ethylene and vinyl acetate, and a first solvent into a reactor to manufacture an ethylene vinyl acetate copolymer through polymerization; recovering unreacted ethylene after the polymerization; recovering unreacted vinyl acetate after the polymerization; introducing a second solvent different from the first solvent to manufacture an ethylene vinyl alcohol copolymer from the ethylene vinyl acetate copolymer through transesterification; and separating the second solvent-derived acetate produced from the transesterification by the method described herein.

Abstract: A multi-purpose tongs having a body in which an operation rod is inserted into a hollow hole thereof and a handle fitted to one side of the body while being penetrably formed, at one side thereof, with a slot, includes a vertical flange provided at one side end of the operation rod so as to radially extend, a fixed lever which is penetrably formed, at a central region thereof, with a through hole, the fixed lever being integrally constituted, at one side thereof, with the handle while protruding outward at the other side thereof, and an operation lever which is hinged-fixed, at an intermediate portion thereof, to the fixed lever, the operation lever including an upper operation lever provided, at one side thereof, outward of the handle and a lower operation lever provided, at the other side thereof.

Abstract: A multi-purpose tongs having a body in which an operation rod is inserted into a hollow hole thereof and a handle fitted to one side of the body while being penetrably formed, at one side thereof, with a slot, includes a vertical flange provided at one side end of the operation rod so as to radially extend, a fixed lever which is penetrably formed, at a central region thereof, with a through hole, the fixed lever being integrally constituted, at one side thereof, with the handle while protruding outward at the other side thereof, and an operation lever which is hinged-fixed, at an intermediate portion thereof, to the fixed lever, the operation lever including an upper operation lever provided, at one side thereof, outward of the handle and a lower operation lever provided, at the other side thereof.