| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a paper quality-improving agent, by which the paper quality-improving agent having a reduced 1,3-dichloro-2-propanol content, having performances sufficient as a paper quality-improving agent, such as a bulkiness-imparting effect, and capable of being easily used, can be produced. SOLUTION: This method for producing the paper quality-improving agent has the step of reacting an amideamine composition (a) containing an imidazoline skeleton-having polyethylenepolyamine, an imidazoline skeleton-having polyamideamine and an imidazoline-free polyamideamine, and having an imidazoline content of 10 to 90% with epichlorohydrin at 50 to 140°C. COPYRIGHT: (C)2009,JPO&INPIT
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