Title:
METHOD FOR PREPARING ORGANOTIN-SUCROSE COMPLEX
Document Type and Number:
WIPO Patent Application WO/2023/279277
Kind Code:
A1
Abstract:
The present application provides a method for preparing an organotin-sucrose complex, comprising: acylating a DMF solution of sucrose with an organotin ester catalyst under predetermined conditions to generate an organotin-sucrose complex and a DMF vapor; condensing and adsorbing the DMF vapor using a condensing and adsorption apparatus provided with a solid adsorbent, removing the moisture therein to obtain regenerated DMF; collecting the regenerated DMF and recycling same into a DMF solution of sucrose entering the acylation step; and purging the solid adsorbent using hot dry air to regenerate the solid adsorbent. The present application greatly reduces DMF consumption, decreasing the burden of DMF post-treatment, and can effectively remove water from the reaction system, promoting the generation of an organotin-sucrose complex, and improving yield of the organotin-sucrose complex. The whole process is simple, equipment costs are low, and the application value and the economic value are extremely high.
Inventors:
ZHANG ZHENGSONG (CN)
CHEN YONGLE (CN)
LIU JIAN (CN)
GUO SIYU (CN)
CHEN YONGLE (CN)
LIU JIAN (CN)
GUO SIYU (CN)
Application Number:
PCT/CN2021/104938
Publication Date:
January 12, 2023
Filing Date:
July 07, 2021
Export Citation:
Assignee:
ANHUI JINHE IND CO LTD (CN)
International Classes:
C07H1/00; C07H23/00; C07H1/06
Foreign References:
| CN102165033A | 2011-08-24 | |||
| CN112175022A | 2021-01-05 | |||
| CN106349300A | 2017-01-25 | |||
| CN107987114A | 2018-05-04 | |||
| CN101460447A | 2009-06-17 |
Attorney, Agent or Firm:
BEIJING LONGAN LAW FIRM (CN)
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