Title:
CRUDE CYCLIC ESTER PURIFICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2018/045938
Kind Code:
A1
Abstract:
A crude cyclic ester purification method. The present invention provides a quick, efficient, and green crude cyclic ester purification method, comprising three procedures of granulation, washing and separation, and drying. Only water is used as a detergent, so that the prepared cyclic ester product has high purity and high yield. By means of the present invention, the prepared high-purity cyclic ester product does not contain any organic solvent and has high purity. The process is easy to operate and efficient. Moreover, the process can achieve continuous production, is easy for industrialization implementation, and produces no three wastes.
Inventors:
LI HONG (CN)
ZHANG QUANXING (CN)
SHENG JIAYE (CN)
CHENG NA (CN)
HUANG WEI (CN)
JIANG WEI (CN)
LI AIMIN (CN)
ZHANG QUANXING (CN)
SHENG JIAYE (CN)
CHENG NA (CN)
HUANG WEI (CN)
JIANG WEI (CN)
LI AIMIN (CN)
Application Number:
PCT/CN2017/100464
Publication Date:
March 15, 2018
Filing Date:
September 05, 2017
Export Citation:
Assignee:
UNIV NANJING (CN)
International Classes:
C07D319/12
Foreign References:
| CN106397388A | 2017-02-15 | |||
| CN101468978A | 2009-07-01 | |||
| CN1112559A | 1995-11-29 | |||
| CN101857585A | 2010-10-13 | |||
| CN1320134A | 2001-10-31 | |||
| CN101648938A | 2010-02-17 | |||
| CN101696204A | 2010-04-21 |
Other References:
JIANG, SHOUYING: "The Study on New Green Purification Process of L-Lactide", SCIENCE-ENGINEERING (A), CHINA MASTER'S THESES, no. S2, 31 December 2011 (2011-12-31), pages 15, 35, 41, 47 - 49
Attorney, Agent or Firm:
SHENZHEN DISI-ELITE INTELLECTUAL PROPERTY AGENCY (CN)
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