| 摘要 |
<p>Novel surface-active compositions are prepared by reacting a diketene prepared from a fatty acid or fatty acid chloride with 8-22 carbon atoms with a substance having a hydrophilic moiety and a hydroxyl or amino group containing one or more active hydrogens. The active hydrogen-containing group is acylated by the diketene and the resulting product contains the hydrophilic moiety and also branched 2-alkyl-3-ketoacyl chains.</p> |
