Ecovance Co. Ltd.

Skc Co., Ltd.

Sk Leaveo Co., Ltd.

Fdg Kinetic (chongqing) Lithium Ion Battery Materials Co., Ltd.

Hyung Mo Kim

Hoon Tae Kim

Seong Dong Kim

Kyung Youn Kim

Ji Yeon Ryu

Seong Hwan Lee

Yong Sang La

Seung Bae Oh

Young-Ho Rho

Jae Hyeok Jang

Byoung Soo Kim

Jae Ryong Lee

The embodiments relate to a biodegradable polyester resin composition, to a nonwoven fabric, to a film, and to processes for preparing the same in which the biodegradable polyester resin composition comprises a specific diol component and a specific dicarboxylic acid component and may further comprise nanocellulose, whereby the biodegradability, flexibility, strength, and processability are enhanced. Since the biodegradable polyester resin composition has enhanced biodegradability, flexibility, strength, and processability as compared with the conventional natural biodegradable polymer widely used, it can be applied to various fields such as films, packaging materials, and nonwoven fabrics to show excellent characteristics.

Resin composition, nonwoven fabric and film of biodegradable polyester, and preparation method thereof

The present invention relates to a biodegradable polyester resin, in which the first repeat unit comprising a first diol residue and an aromatic dicarboxylic acid residue and the second repeat unit comprising a second diol residue and an aliphatic dicarboxylic acid residue satisfy a ratio of the number of repeat units in a specific range, and the softness index of the resin satisfies a specific range, and to a process for preparing the same. Since the biodegradable polyester resin can provide a biodegradable polyester sheet or film that can be simultaneously enhanced in productivity, processability, and moldability and is excellent in tensile strength, tear strength, and friction coefficient and excellent in biodegradability and water degradability, it can be utilized in more diverse fields.

Biodegradable polyester resin, preparation method thereof, and biodegradable polyester film comprising the same

The embodiments relate to an electrochromic device having flexibility while achieving an excellent light transmission adjusting function based on the electrochromic principle. The electrochromic device comprises a light transmission variable structure interposed between a first base layer and a second base layer, wherein the light transmission variable structure comprises a first chromic layer and a second chromic layer, the first chromic layer comprises a reducing chromic material, the second chromic layer comprises an oxidizing chromic material, and the value of c as defined in Equation 1 is 1.0 to 1.6.

Electrochromic device

Biodegradable polyester resin, preperation method thereof, and biodegradable polyester film comprising the same

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Gyeonggi-do, South Korea

Hyung Mo Kim