| 摘要 |
<p>PCT No. PCT/IB97/01063 Sec. 371 Date Mar. 8, 1999 Sec. 102(e) Date Mar. 8, 1999 PCT Filed Sep. 8, 1997 PCT Pub. No. WO98/10021 PCT Pub. Date Mar. 12, 1998Tetrakisazo dyes of formula (I), as defined in claim 1, optionally in admixture with trisazo dyes of formula (X) as defined in claim 4, are valuable anionic dyes for the dyeing of substrates dyeable with anionic dyes, in particular for the dyeing of leather in very intense dark shades.</p> |
