Appropriate aromatic amines were diazotized and coupled with the active methylene of the PVK to give a group of yellow pigments, which have the similar properties with Hansan Yellow dye.
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释义
然后再以合适的芳胺经重氮化反应偶合到PVK的活性亚甲基上,合成出类汉沙黄颜料。
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