发明人张德明,马晓峰,徐明华. "Method for the Synthesis of N,n-bis(2-hydroxyethyl)-4-phenylenediaminesulphate" [P]. 中国发明专利, 专利号 CN 113259278 A, 授权公告日 2021-03-25.
发明人沈红梅,王建平,马晓峰. "A Process for Preparing High-Purity N,n-bis(2-hydroxyethyl)-4-phenylenediaminesulphate" [P]. 中国发明专利, 专利号 CN 109484892 A, 授权公告日 2021-08-25.
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