Sparingly soluble in water, particles of dye disperse in water and slowly dissolve into the fibers. Disperse dyes can be applied to a wide variety of fibers, but are really the only practical means of coloring acetate and polyester fibers.
Source: Understanding Textiles (7th ed.) by Billie J. Collier, Martin J. Bide & Phyllis G. Tortora
Category: Weave