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:
Mar. 31, 2020
Filed:
Nov. 07, 2016
Nantong Licheng Biological Engineering Co., Ltd, Nantong, Jiangsu, CN;
Tianjin University, Tianjin, CN;
Junbo Gong, Tianjin, CN;
Kaifei Zhao, Tianjin, CN;
Haiyan Xi, Jiangsu, CN;
Xiaohua Wu, Jiangsu, CN;
Baohong Hou, Tianjin, CN;
Qiuxiang Yin, Tianjin, CN;
Jingkang Wang, Tianjin, CN;
Feng Jin, Jiangsu, CN;
Shichao Du, Tianjin, CN;
Qinqing Gu, Jiangsu, CN;
Shiping Tang, Jiangsu, CN;
Nantong Licheng Biological Engineering Co., Ltd, Nantong, CN;
Tianjin University, Tianjin, CN;
Abstract
A method for preparing a new crystalline form of γ-aminobutyric acid, including the steps of: S1: preparing a γ-aminobutyric acid solution at an initial concentration of 0.5-1.0 g/mL by adding crude γ-aminobutyric acid to water; adding an additive to the γ-aminobutyric acid solution, raising the temperature to 50-80° C., stirring to produce a clear solution; and S2: obtaining a suspension by evaporating water from the product of S1 under reduced pressure and at 50-80° C.; obtaining a wet product by filtering the suspension; drying the wet product to obtain the new crystalline form of γ-aminobutyric acid. The preparation method of the new crystalline form of γ-aminobutyric acid is simple, easy to operate, low in energy consumption, economical and environmentally friendly. It is suitable for large-scale industrial production.