Anthraquinone colorant compositions and methods for producing the same
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.
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | 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. |
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