专利名称 ---【 METHOD THAT PURIFIES LONG CHAIN DICARBOXYLIC ACID AND PRODUCT OF THE SAME 】

基本信息
申请号
JP20110290412
申请日
2011.12.29
公开(公告)号
JP2013079224(A)
公开(公告)日
2013.05.02
申请(专利权)人
中国科学院微生物研究所
申请人地址
发明人
YAN LIMING;YONG YANG;FU SHENZHAN;CHEN YUANTONG;WANG ZHIZHOU;CAO WUBO; 专利类型 JP
摘要

PROBLEM TO BE SOLVED: To provide a method that purifies a long chain dicarboxylic acid or a salt thereof without using an organic solvent.

SOLUTION: The method comprises as follows. A crude long chain dicarboxylic acid is dissolved to water by alkali, decolored by a decolorant, acidified to 1-2.5 of pH, and crystallized. The obtained solid, in which this crystal is performed with heating/filtering in the water of 60-100°C, is resuspended to water. Subsequently the mixture is heated by the higher temperature than 100°C in a high pressure condition, and then cooled to be crystallized. As a result, the content of the impurity of protein, dye or the like in the product can be effectively decreased. The purity of the crystallized long chain dicarboxylic acid is higher than 99 wt%.

COPYRIGHT: (C)2013,JPO&INPIT

主权项

 

IPC信息
IPC主分类号
C07C51/43
IPC分类号
C07C51/43;C07C51/47;C07C51/487;C07C53/126

 

法律状态信息
法律状态公告日
2013.05.02
法律状态
公开 法律状态信息
公开

 

代理信息
代理机构名称
代理人姓名

 

被引专利信息
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被引非专利信息
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