Title:
POTASSIUM ACETYLSULFONATE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2022/246862
Kind Code:
A1
Abstract:
Provided is a potassium acetylsulfonate composition, comprising potassium acetylsulfonate and a chloride thereof, wherein the content of the chloride is less than 300 ppm. The composition is prepared by the following method: adding triethylamine into a sulfamic acid solution for an amination reaction to generate an ammonium sulfamate solution; adding diketene into same for an acylation reaction under the action of a solid acidic catalyst to obtain an intermediate solution; subjecting the intermediate solution and a cyclizing agent solution to a sulfonation cyclization reaction under the action of a supported solid alkali heterogeneous catalyst to obtain a sulfonation cyclization product; and carrying out hydrolysis and salt formation. The potassium acetylsulfonate composition, which has an extremely low impurity content, can be prepared by using two catalysts in combination, such that a post-treatment process of the potassium acetylsulfonate is reduced, and the production cost is reduced.
Inventors:
ZHOU RUI (CN)
DING ZHEN (CN)
CHEN YONGXU (CN)
YANG FENGBAO (CN)
LIU GANG (CN)
DING ZHEN (CN)
CHEN YONGXU (CN)
YANG FENGBAO (CN)
LIU GANG (CN)
Application Number:
PCT/CN2021/097010
Publication Date:
December 01, 2022
Filing Date:
May 28, 2021
Export Citation:
Assignee:
ANHUI JINHE IND CO LTD (CN)
International Classes:
C07D291/06
Foreign References:
| CN111377882A | 2020-07-07 | |||
| CN111511724A | 2020-08-07 | |||
| CN104411693A | 2015-03-11 |
Other References:
X. DUAN ET AL.: "Synthesis of Acesulfame Potassium", FINE CHEMICALS, vol. 13, no. 5, 1 January 1996 (1996-01-01), pages 22 - 24, XP055436957, ISSN: 1003-5214, DOI: 10.13550/j .jxhg.1996.05.007
"Inorganic and Analytical Chemistry Experiments", 28 February 2007, HIGHER EDUCATION PRESS, CN, ISBN: 978-7-04-020551-0, article NI, JINGAN ET AL.: "Experiment 89: Preparation and Characterization of Solid Superacid", pages: 1 - 3, XP009543004
MA QIANLI; SUO YANHUA; MENG FANLONG; ZHANG WEI; WANG YINGJUN: "Research Advance in Modification and Application of SO42-/MxOy Solid Superacid Catalyst", INDUSTRIAL CATALYSIS, NORTHWEST RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA, vol. 22, no. 2, 1 February 2014 (2014-02-01), China , pages 85 - 91, XP009541276, ISSN: 1008-1143, DOI: 10.3969/j.issn.1008-1143.2014.02.002
"Inorganic and Analytical Chemistry Experiments", 28 February 2007, HIGHER EDUCATION PRESS, CN, ISBN: 978-7-04-020551-0, article NI, JINGAN ET AL.: "Experiment 89: Preparation and Characterization of Solid Superacid", pages: 1 - 3, XP009543004
MA QIANLI; SUO YANHUA; MENG FANLONG; ZHANG WEI; WANG YINGJUN: "Research Advance in Modification and Application of SO42-/MxOy Solid Superacid Catalyst", INDUSTRIAL CATALYSIS, NORTHWEST RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA, vol. 22, no. 2, 1 February 2014 (2014-02-01), China , pages 85 - 91, XP009541276, ISSN: 1008-1143, DOI: 10.3969/j.issn.1008-1143.2014.02.002
Attorney, Agent or Firm:
BEIJING LONGAN LAW FIRM (CN)
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