POLYAMIDE-EPICHLOROHYDRIN RESINS FOR UNION YEING WOOL/COTTON BLENDED FABRICS

摘要

Cationic amine polyamide-epichlorohydrin (PAE) resins were applied as pretreatments to wool,rncotton, and blends of wool/cotton fabrics for subsequent one-step union dyeing with acid dyes accordingrnto the conventional wool dyeing process. Compared to cationic biguanide andrndimethyloldihydroxyethyleneurea/alkyl amine pretreatments, which are known to be effective for onesteprnunion dyeing of wool/cotton blends when applied at levels of 2% to 10% on weight of bath (owb),rnPAE resins were equally as effective when applied at 1.25% owb for 30 minutes at 20°C. PAE resinsrnprovide an efficient alternative to conventional dyeing processes used to achieve union shades and couldrnlead to improved marketability of wool/cotton blends.