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:
May. 14, 2019
Filed:
Jun. 28, 2016
Sunresin New Materials Co. Ltd., Xi an, Xian, Shaanxi Province, CN;
Bluestar Adisseo Nanjing Co., Ltd., Nanjing, Jiangsu Province, CN;
Xiaokang Kou, Xi'an, CN;
Risheng Wang, Xi'an, CN;
Gang Wang, Xi'an, CN;
Qiong Liu, Xi'an, CN;
Wanping Ren, Xi'an, CN;
Julien Boutet, Nanjing, CN;
Yuanbin Yang, Nanjing, CN;
Valentin Guidal, Nanjing, CN;
Abstract
The present invention provides a process for purifying methionine. A methionine product having a purity of up to 99% or higher is obtained by separating methionine from a salt by-product through a process comprising adsorption and desorption using a macroporous adsorption resin, where the methionine content in the salt by-product is ≤0.03%. The yield of methionine extracted with the resin is up to 98% or higher. By using the process of the present invention, the existing production process is simplified, the quality of the methionine product is improved, and the production costs for methionine are reduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile