Title:
METHOD FOR PRODUCING TRIS(1,3-DICHLOROPROPYL)PHOSPHATE
Document Type and Number:
WIPO Patent Application WO/2021/057207
Kind Code:
A1
Abstract:
A method for producing tris(1,3-dichloropropyl)phosphate. Specifically, using phosphorus oxychloride and 1,3-dichloropropanol as reaction materials, and continuously injected into a 1 to 3-stage packed reaction tower for catalyzed esterification, the esterified product generated by the reaction is subjected to alkaline washing, water washing, and distillation to obtain tris(1,3-dichloropropyl)phosphonate, and the hydrogen chloride gas generated by the reaction enters a negative pressure absorption device through a gas outlet at the top of the reaction tower. The filler at each stage of the reaction tower is a catalyst that is selected from solid super acids or strong acid cationic resins, and the reaction tower filler is immersed in the raw material 1,3-dichloropropanol before the reaction.
Inventors:
CHENG ZHONGFA (CN)
WANG YANPING (CN)
SHEN YICHI (CN)
WANG NINGNING (CN)
LU JIUTIAN (CN)
QI XIAOJING (CN)
WANG YANPING (CN)
SHEN YICHI (CN)
WANG NINGNING (CN)
LU JIUTIAN (CN)
QI XIAOJING (CN)
Application Number:
PCT/CN2020/102469
Publication Date:
April 01, 2021
Filing Date:
July 16, 2020
Export Citation:
Assignee:
SHANDONG TAIHE WATER TREAT TECH CO LTD (CN)
International Classes:
C07F9/09
Foreign References:
| CN110511239A | 2019-11-29 | |||
| CN210252272U | 2020-04-07 | |||
| CN108997416A | 2018-12-14 | |||
| CN109438506A | 2019-03-08 | |||
| CN106366122A | 2017-02-01 |
Attorney, Agent or Firm:
JINAN SPRINGS PATENT&TRADEMARK OFFICE (CN)
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