One solution proposed is to mix Brown R and Red 6B.
Brown R chemically has an excellent wash fastness and dry rubbing fastness of 4 and light 6-7. However, its color fastness to rubbing in wet is only 3. Source
Red 6B chemically also has an excellent wash fastness of 4. However its dry rubbing is only 3-4 and wet rubbing is only 3. Source
Thus it is difficult to obtain the good rubbing fastness in this combination of dyes.
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Brown R chemically has an excellent wash fastness and dry rubbing fastness of 4 and light 6-7. However, its color fastness to rubbing in wet is only 3. Source
Red 6B chemically also has an excellent wash fastness of 4. However its dry rubbing is only 3-4 and wet rubbing is only 3. Source
Thus it is difficult to obtain the good rubbing fastness in this combination of dyes.
Thanks for your attention. Did you find the information you were looking for ? Please leave a comment. Do you need to know more ? Please suggest a topic in the comments. You can also join the Forum for your specific queries.
