| 摘要 |
PURPOSE: A natural dye fixing agent containing casein is provided to easily dye and to obtain dye product with excellent fastness. CONSTITUTION: A natural dye fixing agent containing casein contains 85-90 wt% of casein powder of milk casein, egg white, soybean protein, or natural glue, and 10-15 wt% of sodium hydrogen carbonate. A natural dyeing method using the natural dye fixing agent comprises: a step of preparing the natural dye fixing agent containing 85-90 wt% of casein powder, 10-15 wt% of sodium hydrogen carbonate, and acetic acid; a step of adding sodium hydrogen carbonate and 1 part by weight of casein powder to 50 parts by weight of water of 70-100 Deg. C. and dissolving the casein powder to prepare a casein solution; a step of putting 200-300 parts by weight of a material to be dyed into the casein solution; a step of adding acetic acid to the casein solution and adjusting pH by 4.5-5; a step of putting the material to the casein solution and immersing; and a step of drying the material. [Reference numerals] (AA, CC) Fixing agent; (BB, DD) Natural dye |
