专利名称：PREPARATION METHOD AND USE OF N-ACYL ACIDIC AMINO ACID OR SALT
THEREOF
发明人：WANG, Changguo，汪昌国,CHEN, Xianglan，陈香兰,LI, Baoyong，李宝勇
申请号：CN2014/074812
申请日：20140404
公开号：WO2015/024385A1
公开日：
20150226
专利内容由知识产权出版社提供
摘要：The invention provides a preparation method of N-acyl acidic amino acid or a salt thereof, comprising subjecting a fatty acyl chloride and an amino acid to an amidation reaction under an alkaline condition. The preparation method is characterized in that in the amidation reaction, water is used as a solvent, an acidic amino acid or a salt thereof is used as a main raw material and a small amount of a neutral amino acid or a salt thereof is used as an auxiliary raw material, and the method comprises the following steps: under a stirring condition, firstly adding the fatty acyl chloride dropwise into an aqueous solution of the acidic amino acid or the salt thereof; adding an alkali to adjust the pH value of the reaction solution; after a certain amount of fatty acyl chloride having been added dropwise, adding an aqueous solution of the neutral amino acid or the salt thereof, and continuing to add the fatty acyl chloride dropwise until the addition is finished and stirring to maintain the reaction. The preparation method uses the reaction of the mixed amino acid and the fatty acyl chloride under a water-phase system, so that the conversion rates of the amino acid and the acyl chloride can be remarkably increasedreaction between pvp and amino
and the amount of residual amino acids is greatly reduced. The product can be directly used as a surfactant after being treated simply, and thus the cost is greatly reduced.
申请人：NANJING HUASHI CHEMICAL CO., LTD，南京华狮化工有限公司
地址：No.90-66, Fangshui Road, Chemical Industry Park Nanjing, Jiangsu 210047 CN，中国江苏省南京市化学工业园区方水路90号-66, Jiangsu 210047 CN
国籍：CN,CN
代理人：ZHISHI LAW FIRM OF INTELLECTUAL PROPERTY，南京知识律师事务所
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