Methods for dyeing of microporous track etched membranes are provided. In particular, these methods are suitable for dark shade dyeing of membranes having large pores with low porosity. Desirably, such methods provide dyed membranes wherein the membrane parameters are not significantly changed as compared to those prior to dyeing. Likewise, the resultant dyed membranes exhibit no negative influence on sensitive cell culture system applications.

Aqueous ink for textile printing comprising a disperse dye, a dispersant and lignin. A manufacturing method of this ink is provided. An inkjet recording method on textile fabric using the aqueous ink comprising a disperse dye, a dispersant and lignin is also provided.

Aqueous ink for textile printing comprising a disperse dye, a dispersant and lignin. A manufacturing method of this ink is provided. An inkjet recording method on textile fabric using the aqueous ink comprising a disperse dye, a dispersant and lignin is also provided.