Title:
BIODEGRADABLE COPOLYMERIZED POLYESTER RESIN HAVING EXCELLENT STRENGTH AND COLOR CHARACTERISTICS, PREPARATION METHOD THEREFOR, AND MOLDED ARTICLE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2024/106952
Kind Code:
A1
Abstract:
The present invention relates to a biodegradable copolymerized polyester resin, a preparation method therefor, and a molded article comprising same, and more specifically to a polyester resin, a preparation method therefor, and a molded article comprising same, the polyester resin comprising: a repeating unit derived from a dicarboxylic component containing a specific amount of adipic acid or an ester thereof, or succinic acid or an ester thereof; and a repeating unit derived from a diol component containing a specific amount of chain-extended anhydrosugar alcohol and anhydrosugar alcohol-alkylene glycol. Thus, compared to conventional biodegradable polyester resins (e.g., PBAT resin), the polyester resin excellently maintains biodegradability and, at the same time, has notably enhanced strength (e.g., tensile strength) and color characteristics, and also has excellent viscosity, melt index, etc.
Inventors:
LEE MIN SUN (KR)
CHANG YUN JU (KR)
KWON JAE KWAN (KR)
KIM MI RAN (KR)
KIM JONG HUN (KR)
CHANG YUN JU (KR)
KWON JAE KWAN (KR)
KIM MI RAN (KR)
KIM JONG HUN (KR)
Application Number:
PCT/KR2023/018385
Publication Date:
May 23, 2024
Filing Date:
November 15, 2023
Export Citation:
Assignee:
SAMYANG CORP (KR)
International Classes:
C08G63/16; C08L67/02
Foreign References:
| KR102210711B1 | 2021-02-03 | |||
| KR20220080552A | 2022-06-14 | |||
| KR20210002155A | 2021-01-07 | |||
| KR20220091636A | 2022-07-01 | |||
| KR20220057932A | 2022-05-09 |
Attorney, Agent or Firm:
HANSUNG INTELLECTUAL PROPERTY (KR)
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