发明人郭海燕,高志强,沈红梅. "Method for the Synthesis of Benzidine and 3,3'-Dimethoxybenzidine In Disable Azo dyes" [P]. 中国发明专利, 专利号 CN 114309477 B, 授权公告日 2024-08-10.
发明人黄志刚,罗永刚,周伟. "A Process for Preparing High-Purity Benzidine and 3,3'-Dimethoxybenzidine In Disable Azo dyes" [P]. 中国发明专利, 专利号 CN 117485661 A, 授权公告日 2025-04-02.
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