BLENDING NEUTRAL DYEING 1:2 PREMETALLIZED AZO DYED ACID MODIFIED ACRYLIC FIBER WITH THE SAME FIBER UNDYED AND DISPERSE OR CATIONIC DYEING THE BLEND

摘要

An acrylic fiber containing acid groups but no basic groups is dyed with a neutral dyeing 1:2 type premetallized acid dye in a bath containing at least one water-soluble inorganic monovalent metal salt, divalent metal salt or ammonium salt. The resultant dyed material is deeply colored and of excellent fastness, is characterized by minimum dye migration, and is therefore useful in the manufacture of multi-colored dyed acrylic fiber materials.