发明授权
US3997546A 3-Amino 2-aza benzoquinone diimines 失效
3-氨基2-氮杂苯醌二亚胺

3-Amino 2-aza benzoquinone diimines
摘要:
A process for producing indamine by condensing 2,6-diamino pyridine on a paraphenylene diamine or a benzoquinone diimine or a paranitroso N,N-dialkyl aniline. The resulting indamine can be incorporated into a dye composition for keratinic fibers, especially human hair.
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