| 摘要 |
PROBLEM TO BE SOLVED: To provide: a polyalkylene polyamine composition that has a high abundance ratio of straight chain polyalkylene polyamine (straight chain body); and a production method thereof.SOLUTION: In the method a raw-material polyalkylene polyamine comprising primary amino group and secondary amino group is reacted with an acid and then with ethylene dichloride to obtain polyalkylene polyamine composition having a molecular weight higher than the raw-material polyalkylene polyamine. |
