专利名称：Method for extracting an amino acid ester
from a hydrous solution of a mineral acidsalt thereof
发明人：Tomoko Kamashita,Hiroyuki
Yamashita,Teruyuki Nagata,Masanobu Ajioka
申请号：US08/015931申请日：19930119公开号：US05374765A公开日：19941220
摘要：Disclosed is a method for extracting an amino acid ester from a hydroussolution which comprises adding thereto a water-insoluble organic solvent and then anamount of a base effective to liberate only a portion of the amino acid ester in free baseform, and transferring the thus liberated amino acid ester in the free base form into theorganic layer, and repeating the neutralization-extraction steps until all of the amino acidester has been extracted.
申请人：MITSUI TOATSU CHEMICALS, INCORPORATED
代理机构：Millen, White, Zelano & Branigan
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