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Abstract

Abstract A PROCESS FOR FINISHING A FABRIC CONTAINING HIGHLY TWISTED CONTINUOUS FILAMENT POLYCARBONAMIDE YARNS WHEREIN AT LEAST 50 MOL PERCENT OF THE REPEATING UNITS ARE OF THE FORMULA: -NH-1,4-CYCLOHEXYLENE-CH2-1,4-CYCLOHEXYLENE-NH-CO-(CH2)10-COWITH AT LEAST 70% BY WEIGHT OF THE DIAMINO CONSTITUENT OF THE REPEATING UNITS BEING A TRANS-TRANS STEREOISOMERIC CONFIGURATION, COMPRISING: (A) STABILIZING THE FABRIC BY HEATING IT IN OPEN WIDTH IN A MEDIUM SELECTED FROM THE GROUP CONSISTING OF STEAM, AIR OR WATER TO INDUCE FROM ABOUT 5 TO 20% SHRINKAGE IN BOTH WARP AND FILLING BASED ON GREIGE FABRIC DIMENSIONS; (B) EXPOSING THE FABRIC TO AN ACIDIC AQUEOUS BATH CONTAINING O-PHENYLPHENOL NEAR THE BOIL; (C) REMOVING THE O-PHENYLPHENOL FROM THE FABRIC BY TREATING THE SAME WITH AN AQUEOUS ALKALINE BATH AT A TEMPERATURE NEAR THE BOIL, RINSING THE FABRIC AND DRYING THE SAME, THE AMOUNT OF O-PHENYLPHENOL IN THE BATH BEING BETWEEN 1/2 TO 3/4 OF THE TOTAL AMOUNT OF O-PHENYLPHENOL INDICATED BY THE FOLLOWING EQUATION: Y=10.1X-250 WHEREIN Y IS THE BATH-TO-FABRIC WEIGHT RATIO AND X IS THE PERCENT BY WEIGHT OF THE AMOUNT OF O-PHENYLPHENOL IN THE BATH BASED ON THE WEIGHT OF THE FABRIC.

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