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Title:
NYLON 5X SALT AND HIGH-PURITY PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/137083
Kind Code:
A1
Abstract:
Disclosed in the present invention are a one-step process for producing a nylon 5X salt and a prepared high-purity nylon 5X salt. The process comprises: subjecting a lysine fermentation liquid to ion exchange and desorption to obtain a pure lysine collecting liquid, subjecting same to deamination, and using a nanofiltration membrane to separate part of proteins and inorganic salts; reacting a diacid with lysine to produce a lysine-diacid salt, controlling the reaction pH to be between 5 and 6, directly adding a diacid to buffer pH during the conversion process, converting the lysine-diacid salt feedstock liquid into a nylon 5X salt solution by using a lysine decarboxylase fermentation liquid in one step, and controlling the pH to be around 7 at the end of conversion; removing microorganisms by means of ceramic membrane filtration, adsorbing impurities, performing concentration and crystallization, subjecting the mother liquor after crystallization to extraction and crystallization by means of ethanol, and collecting the nylon 5X salt. The present invention increases yield and purity, and reduces contamination of production.

Inventors:
GAO, Shijun (No. 150, Xinxing East Street,Economic & Technological Development Zone, Shouguang Cit, Weifang Shandong 0, 262700, CN)
WU, Zehua (No. 150, Xinxing East Street,Economic & Technological Development Zone, Shouguang Cit, Weifang Shandong 0, 262700, CN)
LUN, Xuening (No. 150, Xinxing East Street Economic & Technological Development Zone, Shouguang Cit, Weifang Shandong 0, 262700, CN)
LIU, Chunhua (No. 150, Xinxing East StreetEconomic & Technological Development Zone, Shouguang Cit, Weifang Shandong 0, 262700, CN)
ZHANG, Jie (No. 150, Xinxing East StreetEconomic & Technological Development Zone, Shouguang Cit, Weifang Shandong 0, 262700, CN)
CHU, Yuqiang (No. 150, Xinxing East Street Economic & Technological Development Zone, Shouguang Cit, Weifang Shandong 0, 262700, CN)
WANG, Zhiqiang (No. 150, Xinxing East Street Economic & Technological Development Zone, Shouguang Cit, Weifang Shandong 0, 262700, CN)
SUN, Jingshan (No. 150, Xinxing East Street Economic & Technological Development Zone, Shouguang Cit, Weifang Shandong 0, 262700, CN)
Application Number:
CN2018/114373
Publication Date:
July 18, 2019
Filing Date:
November 07, 2018
Export Citation:
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Assignee:
SHANDONG SHOUGUANG JUNENG GOLDEN CORN CO., LTD. (No. 150, Xinxing East Street Economic & Technological Development Zone, Shouguang Cit, Weifang Shandong 0, 262700, CN)
SHOUGUANG GOLDEN FAR EAST MODIFIED STARCH CO., LTD. (Shouguang Development Zone, ShouguangWeifang, Shandong 0, 262700, CN)
SHOUGUANG GOLDEN CORN BIOLOGICAL SCIENCE AND TECHNOLOGY CO., LTD. (North Of Anshun Street, West Of Xingyuan Road Gucheng Street, Shouguan, Weifang Shandong 0, 262700, CN)
LINQING DENENG GOLDEN CORN BIO-TECHNOLOGY CO., LTD. (Dongshou, Nanhuan Road Linqing Cit, Liaocheng Shandong 0, 252600, CN)
International Classes:
C07C211/09; C07C51/41; C07C51/43; C07C55/10; C07C209/84; C07C227/16; C07C227/40; C07C229/26; C12P13/00
Foreign References:
CN108129329A2018-06-08
US20050003497A12005-01-06
CN102399833A2012-04-04
Attorney, Agent or Firm:
BEIJING HUAZHONG LONGTENG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (Room 322, Building B Zhengfa Mansion, Jimenqiao, Haidian District, Beijing 9, 100089, CN)
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