substantive dye

1. A Cationic Substantive Dye& Specially Designed for Papermaking Industry
   专为造纸业设计的染料&阳离子直接染料
2. By using wool, acrylic fiber and viscose in a determinate proportion to spin blank melange, dyeing with weak acid dye, substantive dye, cation dye, in the way of "one-bath and one-step", the wool melange with special style was produced.
   应用羊毛、腈纶、粘胶3种纤维，按照一定比例纺成白坯绒线，再用弱酸性染料、阳离子染料和直接染料采用适当的工艺一浴一步染色，就能生产出特殊风格的花色绒线。

noun

1. dye with a high affinity for cellulose fibers (cotton or rayon etc.)

   Synonym:    direct dye