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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.:

US 10669233 B1

PDFFull Text
Date of Patent:
Jun. 02, 2020

Filed:

Mar. 19, 2019

Process of purifying methionine

Applicants:

Sunresin New Materials Co. Ltd., Xi an, Xian, Shaanxi Province, CN;

Bluestar Adisseo Nanjing Co., Ltd., Nanjing, Jiangsu Province, CN;

Inventors:

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;

Assignees:

SUNRESIN NEW MATERIALS CO. LTD., XI'AN, Xi'an, Shaanxi, CN;

Bluestar Adisseo Nanjing Co., Ltd., Nanjing, Jiangsu, CN;

Attorney:

PROI Intellectual Property US

Primary Examiner:

Paul A Zucker

Int. Cl.
CPC ...
C07C 319/28 (2006.01); C07C 323/58 (2006.01); A61K 31/145 (2006.01); B01J 20/285 (2006.01); B01D 15/26 (2006.01); B01D 15/12 (2006.01); B01D 15/42 (2006.01);
U.S. Cl.
CPC ...
C07C 319/28 (2013.01); A61K 31/145 (2013.01); B01D 15/12 (2013.01); B01D 15/265 (2013.01); B01D 15/426 (2013.01); B01J 20/285 (2013.01); C07C 323/58 (2013.01);
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.

Find Patent Forward Citations

Kou, Xiaokang. (2020). Process of purifying methionine (U.S. Patent No. 10669233). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10669233

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