The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 2021
Filed:
Aug. 15, 2016
Shanghai Green Valley Pharmaceutical Co., Ltd., Shanghai, CN;
Zhongping Xiao, Shanghai, CN;
Zhenqing Zhang, Suzhou, CN;
Meiyu Geng, Shanghai, CN;
Jian Ding, Shanghai, CN;
Shanghai Green Valley Pharmaceutical Co., LTD., Shanghai, CN;
Abstract
The invention relates to a new method of preparing oligomannuronic diacids, important bioactives. The method utilizes oligomannuronic acids as starting materials and the target substances are obtained by acid degradation and active hypobromous acid oxidation steps. The method of preparing oligomannuronic diacids according to the invention employs moderate reaction conditions, has few side reactions, does not need further purification, achieves a yield of more than 90%, or even more than 95%, and is suitable for production with an on-line continuous reactor device, with reaction processes easy to implement automatic control.