Sk Chemicals Co., Ltd.

Korea Advanced Institute of Science and Technology

Other

Yoo Jin Lee

Da-Young Hwang

Sung-Gi Kim

Boo-youn Lee

Sang Hwan Kim

Koeng Su Lim

Jin Koog Shin

Ji Hwan Yang

Joong Hwan Kwak

Ji-Hyun Kim

Su-Min Lee

Jong-In Lee

Jong-Ryang Kim

Seong Won Kwon

Sang Il Park

Kwang-Woo Park

Yun Kyung Lee

Jong Ryang Kim

Min-Young Han

Ji-Hun Kim

Joong Ki Lee

Jong Min Park

Hyun-Woo Oh

Kyu-Chan Han

Yeong Woo Lee

Dong-jin Han

Seong Pill Cho

Chi Seob Lee

Byung Ki Choi

Chang Ryung Yang

Chong Hun Han

Yeong Su Jeong

Deok Ho Kim

Jae Heum Jung

A polyester resin blend and a molded article formed therefrom are provided. The polyester resin blend exhibits excellent processability even if it contains recycled polyethylene terephthalate as well as virgin polyethylene terephthalate, and can provide high quality molded articles, especially by extrusion blow molding. In addition, it can be reused, and it is expected to be useful for providing continuously usable plastics that have been recently attracting attention. The polyester resin blend comprising polyethylene terephthalate; and a polyester resin having a structure in which an acid moiety derived from a dicarboxylic acid or a derivative thereof and a diol moiety derived from a diol are repeated, wherein the polyester resin comprises a residue derived from a branching agent having at least three functional groups, wherein the dicarboxylic acid or a derivative thereof comprises terephthalic acid or a derivative thereof, wherein the polyester resin comprises 5 to 19 mol % of a diol moiety derived from a comonomer other than ethylene glycol with respect to the total diol moiety, wherein the polyester resin comprises a diol moiety derived from isosorbide as the diol moiety derived from the comonomer, and the polyester resin comprises 0.1 to 15 mol % of the diol moiety derived from isosorbide with respect to the total diol moiety. The polyester resin has a processability parameter value of 2 to 15.

Polyester resin blend and article formed from the same

The present invention relates to a polyester fiber, a preparation method thereof and a molded article prepared therefrom. The polyester fiber comprises a diol moiety derived from isosorbide in a specific amount and is formed into a polyester resin having a specific oligomer content, thereby providing a molded article having excellent saline water resistance, chemical resistance, light resistance and good knot strength, and capable of maintaining high transparency.

Polyester fiber, preparaion method thereof and molded article formed therefrom

The present invention relates to a crystalline polyester resin and to a process for preparing the same. Since the crystalline polyester resin has a crystallinity required in a molding process and/or a recycling process while fusion is minimized during the preparation process, it can have excellent productivity, moldability, recyclability, and the like.

Crystalline polyester resin and manufacturing method thereof

The present disclosure relates to a polyester film and a preparation method of the same. Since the polyester film includes a resin layer formed from a mixture comprising a polyester resin, which includes a first diol moiety derived from isosorbide and a second diol moiety derived from cyclohexanedimethanol in a controlled ratio, and polyethylene terephthalate in a specific ratio, it is possible to exhibit improved heat resistance and adhesion with excellent light transmittance.

Polyester film and preparation method thereof

This polyester resin comprises a bis(2-hydroxyethyl)terephthalate monomer which is obtained by depolymerization of waste polyester and which has a diethylene glycol ester content adjusted to be a certain level or less. The polyester resin, despite of being a recycled resin, has the same level of quality as the original resin and thus can be used in manufacturing articles in various fields.

Polyester resin using recycled bis(2-hydroxyethyl) terephthalate and article including same

The present disclosure relates to a polyester resin blend. The polyester resin blend exhibits excellent miscibility even if it contains recycled polyethylene terephthalate as well as virgin polyethylene terephthalate, and can provide molded articles with high transparency.

Polyester resin blend

The present disclosure relates to a method for purifying bis-2-hydroxyethyl terephthalate with high purity and a polyester resin containing the same.

Method for purifying bis-2-hydroxylethyl terephthalate and polyester resin comprising same

The present disclosure relates to a polyester film and a preparation method of the same. Since the polyester film includes a resin layer formed from a polyester resin including a first diol moiety derived from isosorbide and a second diol moiety derived from cyclohexanedimethanol in a controlled ratio on at least one surface of a base layer, it is possible to exhibit excellent heat resistance and adhesion.

Polyester film and preparation method therefor

Disclosed is a method of storing, in a distributed manner, genomic information in a plurality of nodes, each containing a block chain composed of blocks connected to each other, retrieving at least one piece of the stored genomic information, and acquiring a genomic material corresponding to the retrieved genomic information from a genomic material storage unit that stores genomic materials, each genomic material containing a genome and an artificial nucleic acid sequence. The method includes (1) storing, by each node, genomic information, (2) retrieving, by at least one of the nodes, specific genomic information, and (3) performing authentication.

Method for storing and utilizing genome and genomic information

The present invention relates to a polyester resin. The polyester resin is useful for bottles, sheets, multilayer sheets, stretched films and fiber applications due to excellent heat resistance and transparency, and in particular, the polyester resin has little deterioration of physical properties such as yellowing, etc., during processing. A process for making the polyester resin includes an esterification reaction between a dicarboxylic acid that includes terephthalic acid and a diol that includes isosorbide in the presence of a catalyst, followed by a polycondensation reaction on a product of the esterification reaction. In some embodiments, an initial mixing ratio of the dicarboxylic acid and the diol is between 1:1.02 and 1:1.04.

Polyester resin

The present invention relates to a polyester container. The polyester container is formed from a polyester resin containing a particular content of diol moieties derived from isosorbide and diethylene glycol, and thus can show high transparency in spite of a great wall thickness thereof.

Polyester container and manufacturing method therefor

The present invention relates to a polyester resin. The polyester resin contains a particular content of diol moieties, derived from isosorbide and diethylene glycol, and thus can provide a resin molded product exhibiting high transparency in spite of a large wall thickness thereof.

Polyester resin, method for preparing same, and resin molded product formed therefrom

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Gyeonggi-do, South Korea

Yoo Jin Lee