Sk Innovation Co., Ltd.

Sk Geo Centric Co., Ltd.

In Su Lee

Ho Seong Lee

Ji Hye Park

Hong Chan Kim

Sun Joo Kim

Doh Yeon Park

Jae Eun Lee

Wan Ju Jeong

Byoung Kyu Kwak

Seok Bin Hong

Kyung Jin Ma

Juan Carlos Estevez Videira

Manuel David Recasens Alvaro

Won Bin Kim

The present invention relates to a method for producing an ethylene-based copolymer, and more particularly, to a method for producing an ethylene-based copolymer capable of increasing process efficiency by preventing plugging and corrosion of a facility. The method for producing an ethylene-based copolymer includes a producing mode and a washing mode of which one is selectively performed. The producing mode includes: a) hyper-compressing primary compressed ethylene, and a mixture including a carboxylic acid-containing comonomer and a polar solvent to produce a compressed material; b) reacting the compressed material to produce a reaction product including an ethylene-based copolymer; and c) separating and recovering unreacted residues from the reaction product and introducing the unreacted residues into the mixture of step a). The washing mode includes: re-supplying the compressed material produced in step a) to step a) as a mixture, without performing step b).

Washing methods for ethylene-acrylic acid copolymer manufacturing process using solvent

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Daejeon, South Korea

In Su Lee