Acid dye mixture

[0023] Embodiment one: a kind of gray acid dye mixture and its preparation

[0024] 1. Formula

[0025] Composition Content

[0026] (1) C.I. Acid Blue 277 dyestuff 36% meeting general chemical formula (I);

[0027] (2) 10% of C.I. Acid Red 336 dyestuff meeting the general chemical formula (II);

[0028] (3) C.I. Acid Yellow 242 dye 16%;

[0029] (4) Urea 10%;

[0030] (5) Dextrin 28%.

[0031] The above-mentioned content is calculated by weight percentage of dry dye.

[0032] 2. Preparation of dye mixture

[0033] According to the formula, each component is formulated and mixed in the aqueous solution state, and the finished product is obtained through spray drying.

[0034] Embodiment two: a kind of gray acid dye mixture and its preparation

[0035] 1. Formula

[0036] Composition Content

[0037] (1) 40% of the C.I. acid blue 225 dyestuff meeting the general chemical formula (I);

[0038] (2) 15% of C.I. Acid Red 336 dyestuff meeting the general chemical formula (II);

[0039] (3) C.I. Acid Orange 67 dye 10%;

[0040] (4) Urea 15%;

[0041] (5) Sodium tripolyphosphate 20%.

[0042] The above-mentioned content is calculated by weight percentage of dry dye.

[0043] 2. Preparation of dye mixture

[0044] According to the formula, each component is formulated and mixed in the aqueous solution state, and the finished product is obtained through spray drying.

[0045] Embodiment three: a kind of gray acid dye mixture and its preparation

[0046] 1. Formula

[0047] Composition Content

[0048] (1) 50% of the C.I. acid blue 350 dye that meets the general chemical formula (I);

[0049] (2) 10% of C.I. Acid Red 361 dyestuff meeting the general chemical formula (II);

[0050] (3) C.I. Acid Orange 67 dye 15%;

[0051] (4) Dextrin 15%;

[0052] (5) Sodium tripolyphosphate 10%.

[0053] The above-mentioned content is calculated by weight percentage of dry dye.

[0054] 2. Preparation of dye mixture

[0055] According to the formula, each component is formulated and mixed in the aqueous solution state, and the finished product is obtained through spray drying.