| 摘要 |
<p>There is described a stable concentrated liquid preparation of paper dyes which preparation contains 15 to 40 per cent by weight of certain anionic disazo dyes of the formula and dissolved in 40 to 80 per cent by weight of a diethylene glycol monoalkyl ether, optionally in admixture with up to 30 per cent by weight of a mono-, di-, tri- or tetraalkylene glycol, and the use of this liquid preparation for the dyeing and printing of paper, semi-cardboard and cardboard.</p> |
