Title:
METHOD FOR PREPARING NEOPENTYL GLYCOL
Document Type and Number:
WIPO Patent Application WO/2024/053936
Kind Code:
A1
Abstract:
The present invention provides a method for preparing neopentyl glycol, comprising the steps of: obtaining a first reaction product containing hydroxypivaldehyde by performing an aldol condensation reaction; contacting the first reaction product with an extracting agent and distilling same so as to obtain an extract solution and a raffinate solution; supplying the raffinate solution to a saponification reactor and reducing same with a catalyst, and supplying the catalyst to an integrated recovery column; supplying the extract solution to an aldol purification column and distilling same so as to obtain an upper discharge stream and a lower discharge stream; supplying the upper discharge stream of the aldol purification column to the integrated recovery column and supplying the lower discharge stream to a hydrogenation reactor so as to obtain a second reaction product containing neopentyl glycol; and obtaining the neopentyl glycol from the second reaction product.
Inventors:
KIM SUNG KYUN (KR)
LEE SUNG KYU (KR)
HA NA RO (KR)
CHO SEUNG SIK (KR)
LEE SUNG KYU (KR)
HA NA RO (KR)
CHO SEUNG SIK (KR)
Application Number:
PCT/KR2023/013048
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
Foreign References:
| KR20170029311A | 2017-03-15 | |||
| KR20160133843A | 2016-11-23 | |||
| KR100852283B1 | 2008-08-18 | |||
| KR100343797B1 | 2002-12-16 | |||
| CN111393260A | 2020-07-10 |
Attorney, Agent or Firm:
P&P PATENT LAW FIRM (KR)
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