Treating polyester-polyurethane blend fabrics for use in clothing, to improve color fastness on subsequent dyeing, by contacting with colorless low-molecular material, preferably optical brightener or liquid crystal

摘要

Treatment of blend fabrics containing polyester and polyurethane involves contacting the fabric with 0.1-50 wt. % (based on fabric) of colorless low-molecular material(s) (I). Independent claims are included for: (1) fabrics treated by the process; and (2) articles of clothing prepared from colored fabrics treated by the process.