发明授权
US4216145A Water-insoluble mono-azo yellow dyes derived from 1-phenyl-3-aminopyrazoles 失效
衍生自1-苯基-3-氨基吡唑的水不溶性单偶氮黄色染料

Water-insoluble mono-azo yellow dyes derived from
1-phenyl-3-aminopyrazoles
摘要:
New yellow mono-azo dyes which are insoluble in water are disclosed. The dyes are derived from 1-phenyl-3-aminopyrazoles and are particularly effective in dyeing synthetic hydrophobic fibers to intense yellow shades.
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