申请人:Otsuka Chemical Co., Ltd.
公开号:EP2098518A1
公开(公告)日:2009-09-09
A process for preparing a highly pure quaternary ammonium salt comprising:
(1) adding a quaternary ammonium hydroxide salt or quaternary ammonium carbonate to a quaternary ammonium salt containing a protonic acid salt of a tertiary amine as an impurity and thereby neutralizing the tertiary amine protonic acid salt with the quaternary ammonium hydroxide salt or carbonate to convert the acid salt to a tertiary amine and water and to convert the quaternary ammonium hydroxide salt or carbonate to a quaternary ammonium salt at the same time, and
(2) removing the tertiary amine and water produced from the system.
一种制备高纯季铵盐的工艺,包括
(1) 将氢氧化季铵盐或碳酸季铵盐加入到含有叔胺质子酸盐作为杂质的季铵盐中,从而用氢氧化季铵盐或碳酸季铵盐中和叔胺质子酸盐,将酸盐转化为叔胺和水,并同时将氢氧化季铵盐或碳酸季铵盐转化为季铵盐,以及
(2) 从系统中清除产生的叔胺和水。