abstract |
The present invention relates to a novel bis-reactive dye with N, N-dialkylamino bridge group of the following formula (I): wherein E 1 , E 2 , R, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , G, G ', B, B', X, m and n are the same are defined in the description. The bis-reactive dye of the present invention is useful for exhaust dyeing, cold pad tinting, continuous dyeing, printing and digital transfer printing materials containing hydroxy groups or polyamine fibers. |