산성 염료의 모발 염색성 연구(Ⅱ)

Dyeability of Hair with Semi Permanent Hair Dyeing(Ⅱ)

Among milling acid dyes, this study has chosen C.I. Acid Blue 90, which is the most difficult dye in creating hair color in blue color dyes with short color retention.In terms of solvents, acetophenone (C6H5COCH3), benzyl alcohol (C6H5CH2OH), ethyl alcohol (C2H5OH), propyl alcohol (CH3CH2CH2OH), and tributylphosphate were used. The test results found the following: the solvent with the best dyeing property was acetophenone (C6H5COCH3), followed by tributylphosphate, benzyl alcohol (C6H5CH2OH), ethyl alcohol (C2H5OH), and propyl alcohol (CH3CH2CH2OH). The amount of dye absorption was higher as dyeing temperature and time increased. In particular, when acetophenone (C6H5COCH3) was added, dyeing equilibrium was reached quickly. Furthermore, the amount of dye absorption was high even at relatively low temperature. As dyeing time and temperature rise, leak of protein from hair increases. With an addition of acetophenone (C6H5COCH), however, the protein leaking decreases, which means that the addition of acetophenone (C6H5COCH3) reduces hair damage at hair coloring. In terms of the wash fastness of dyed hair by solvent, K/S reduction rate rose as washing frequency increased. When acetophenone (C6H5COCH3) was added, the K/S reduction rate was low and relatively stable, revealing high wash fastness. In contrast, light fastness was low in all solvents.