| 摘要 |
<p>Improved exhaustion from non-aqueous (e.g. perchloroethylene) dye baths is obtained by addition (typically about 1%) of an unsaturated aromatic, ester, pref. a beta-cyano-beta-phenylacrylate of a C1-6 alcohol, and or an aromatic ketone derivative, pref. a 2-hydroxy-4-alkoxybenzophenone with a C5-18 alkoxy-group.</p> |
