Invention Grant
- Patent Title: Polytrimethylene ether glycol and preparation method thereof
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Application No.: US16647752Application Date: 2018-09-11
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Publication No.: US11608413B2Publication Date: 2023-03-21
- Inventor: Jae-Il Chung , Hyun Jun Cho , Han-Seok Kim , Deug-Soo Kim
- Applicant: SK CHEMICALS CO., LTD.
- Applicant Address: KR Gyeonggi-do
- Assignee: SK CHEMICALS CO., LTD.
- Current Assignee: SK CHEMICALS CO., LTD.
- Current Assignee Address: KR Gyeonggi-do
- Agency: Sheridan Ross P.C.
- Priority: KR10-2017-0128260 20170929
- International Application: PCT/KR2018/010630 WO 20180911
- International Announcement: WO2019/066310 WO 20190404
- Main IPC: C08G65/46
- IPC: C08G65/46 ; C08G65/34
Abstract:
Provided are a polytrimethylene ether glycol and a preparation method thereof, wherein various by-products and oligomers may be effectively removed from a polytrimethylene ether glycol product without exposing to a high temperature for a long period of time, and therefore, a molecular weight variation may be reduced due to the removal of various by-products and low molecular weight oligomers.
Public/Granted literature
- US20200277437A1 POLYTRIMETHYLENE ETHER GLYCOL AND PREPARATION METHOD THEREOF Public/Granted day:2020-09-03
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