Title:
METHOD FOR PRODUCING POLYESTER RESIN AND FIBER COMPRISING REGENERATED BIS(2-HYDROXYETHYL) TEREPHTHALATE
Document Type and Number:
WIPO Patent Application WO/2023/219335
Kind Code:
A1
Abstract:
A polyester resin according to the present invention comprises a regenerated bis(2-hydroxyethyl) terephthalate having high purity and containing diethylene glycol ester in an amount controlled below a certain level, and thus has heat resistance and quality comparable to the original resin even though the polyester resin is regenerated through chemical recycling. In particular, a polyester fiber comprising the polyester resin of the present invention has excellent strength, elongation, and processability, and can thus be used as an eco-friendly fiber product.
Inventors:
PARK JUN-YONG (KR)
KIM DO-KYOON (KR)
KIM SUNG-GI (KR)
KIM JI-HUN (KR)
PARK KWANG-WOO (KR)
PARK JI HYE (KR)
LEE JOONG KI (KR)
KIM DO-KYOON (KR)
KIM SUNG-GI (KR)
KIM JI-HUN (KR)
PARK KWANG-WOO (KR)
PARK JI HYE (KR)
LEE JOONG KI (KR)
Application Number:
PCT/KR2023/006075
Publication Date:
November 16, 2023
Filing Date:
May 03, 2023
Export Citation:
Assignee:
SK CHEMICALS CO LTD (KR)
International Classes:
C08G63/06; C07C69/82; C07C69/84; C08G63/78; C08G63/80; C08J11/24; D01F6/62
Foreign References:
| KR20030019630A | 2003-03-06 | |||
| KR20060121082A | 2006-11-28 | |||
| KR20120128480A | 2012-11-27 | |||
| KR20150067797A | 2015-06-19 | |||
| KR20150053502A | 2015-05-18 |
Attorney, Agent or Firm:
FIRSTLAW P.C. (KR)
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