Title:
METHOD FOR PREPARING NEOPENTYL GLYCOL
Document Type and Number:
WIPO Patent Application WO/2024/053935
Kind Code:
A1
Abstract:
The present invention relates to a method for producing neopentyl glycol, comprising the steps of: obtaining a first reaction product containing hydroxypivaldehyde through an aldol condensation reaction; contacting the first reaction product with an extractant and distilling same to obtain an extract and a raffinate; supplying the raffinate to a saponification reactor and reducing same with a catalyst; supplying both the extract and the catalyst to an aldol purification column and distilling same to make separation into an upper discharge stream and a lower discharge stream; supplying the lower discharge stream of the aldol purification column to an aqueous reaction vessel to obtain a second reaction product containing neopentyl glycol; and obtaining neopentyl glycol from the second reaction product.
Inventors:
KIM SUNG KYUN (KR)
LEE SUNG KYU (KR)
BAEK GI SU (KR)
HA NA RO (KR)
LEE SUNG KYU (KR)
BAEK GI SU (KR)
HA NA RO (KR)
Application Number:
PCT/KR2023/013046
Publication Date:
March 14, 2024
Filing Date:
September 01, 2023
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C07C29/14; C07C29/74; C07C31/20
Domestic Patent References:
| WO2016022601A1 | 2016-02-11 |
Foreign References:
| KR20170029311A | 2017-03-15 | |||
| KR100852283B1 | 2008-08-18 | |||
| JPH09110792A | 1997-04-28 | |||
| US4935555A | 1990-06-19 |
Attorney, Agent or Firm:
P&P PATENT LAW FIRM (KR)
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