Sk Innovation Co., Ltd.

Sk Global Chemical Co., Ltd.

Sk Geo Centric Co., Ltd.

Sk Gc Americas Inc.

Hai Jin Shin

Doh Yeon Park

Yong Zheng

Ju Eun Jung

Hae Woong Park

Suk Joon Kim

Sang Ha Son

Byoung Cheon Jo

Ji Sun Choi

Soo Young Hwang

Jae Eun Lee

Byoung Kyu Kwak

Mark Jasek

Christopher Balhoff

Du Youn Ka

An aqueous dispersion composition according embodiments of the present invention includes an ethylene-carboxylic acid copolymer, an anti-blocking agent including a polymer wax included in a content of 5 wt % or more based on a weight of the ethylene-carboxylic acid copolymer, and an aqueous dispersion medium. A peak area corresponding to a melting point of 80° C. or less in a differential scanning calorimetry (DSC) graph is 50% or more. Blocking phenomenon is suppressed using the anti-blocking agent while achieving desired heat seal properties.

Aqueous dispersion composition comprising ethylene-carboxylic acid

An ethylene-(meth)acrylic acid copolymer has a portion having a melting temperature of 94&#xb0; C. or higher. A content of the portion having the melting temperature of 94&#xb0; C. or higher measured by a Successive Self-nucleation and Annealing (SSA) analysis is 1.5% or less. A water-dispersive composition includes the ethylene (meth)acrylic acid copolymer, a neutralizing agent and an aqueous medium.

Ethylene-(meth)acrylic acid copolymer and water-dispersive composition including the same

A method of preparing an aqueous dispersion of an ethylene-carboxylic acid copolymer according to exemplary embodiments of the present invention includes: mixing 30% by weight or more of an ethylene-(meth)acrylic acid copolymer, a basic compound, and water to form a mixed solution; and adding an inorganic salt compound to the mixed solution. Therefore, the aqueous dispersion of the ethylene-carboxylic acid copolymer may be effectively dispersed.

Aqueous dispersion of ethylene-carboxylic acid copolymer and method of preparing the same

An ethylene-(meth)acrylic acid copolymer has a polydispersity index (PDI) in a range from 3.5 to 8.0, and has a melt flow index (MFI) measured at 190&#xb0; C. and 2.16 kg in a range from 350 g/10 min to 1800 g/10 min A water-dispersive composition includes the ethylene (meth)acrylic acid copolymer, a neutralizing agent and an aqueous medium.

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Daejeon, South Korea

Hai Jin Shin