DYE COMPOSITION FOR POLYAMIDE FIBER, DYEING PROCESS AND FIBER DYED WITH THE SAME COMPOSITION

PURPOSE:To obtain a uniformly dyed fiber having high compatibility in high reproducibility by dyeing a polyamide fiber with a dye composition produced by compounding yellow, red and blue simple dyes or with a mixture of said compounded primary colors at proper ratios. CONSTITUTION:A polyamide fiber is dyed with a dye having high wet color fastness by using a dye composition produced by selecting and compounding a yellow dye consisting of group (YA) comprising C.I. Acid Yellow 42, 219 and a compound of formula I (X is Cl, etc.), group (YB) comprising Orange 67, 217 and group (YC) comprising Orange 95, 127. A level dyeing can be achieved in high compatibility by the use of the above dye composition in contrast with the dyeing with simple dye causing nonuniform dyeing. The similar dyeing property can be attained by using a red dye consisting of a selected and compounded mixture from group (RA) C.I. Acid Red 119, group (RB) Red 151, 299, a compound of formula II (R1 and R2 are H or CH3; R3 and R4 are H, CH3, etc.) and group (RC) Red 266, 299 or using a blue dye consisting of a selected and compounded mixture from group (BA) C.I. Acid Blue 127, group (BB) 40, 260, group (BC) 40, 264, etc.