IMPROVED ANTHRAQUINONE COLORANT COMPOSITIONS AND METHODS FOR PRODUCING THE SAME
摘要
<p>This invention relates to compositions of N,N'-dialkyleneoxy-substituted 1,4-diaminoanthraquinone colorants which contain a low percentage of impurities, to a process to make the compositions, and also to the use of the compositions thus prepared for coloring consumer products.</p>
