| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high purity ethyleneimine polymer aqueous solution which is free from an offensive odor and an irritating odor, has a viscosity that hardly changes with time, and complies with a quality standard industrially required. <P>SOLUTION: The ethyleneimine polymer aqueous solution is attained by a method for producing an ethyleneimine polymer aqueous solution, that is characterized by performing polymerization while maintaining the temperature of a reaction solution during polymerization and the temperature of a heat medium used for removing the reaction heat within a specific temperature range, and further performing aging within a specific temperature range when the ethyleneimine polymer aqueous solution is produced by polymerizing ethyleneimine in an aqueous solution. <P>COPYRIGHT: (C)2013,JPO&INPIT |
