A kind of preparation method of hair dyeing material
A technology of dyes and composite pigments, applied in medical preparations containing active ingredients, hair care, pharmaceutical formulas, etc., can solve problems such as poor color fastness, high toxicity, and poor covering rate, and achieve improved color fastness and covering The effect of strong resistance and small amount of material
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[0026] A preparation method of a novel hair dyeing material, comprising the steps of:
[0027] The first step is the preparation of new composite pigments (Dye@MOFs) composed of organometallic framework materials and traditional dyes:
[0028] Select ZIF-8MOFs material, add triethylamine (TEA) solution to Zn(NO 3 ) 2 •6H 2 In the aqueous solution of O, stir evenly to form mixed solution 1, add the aqueous dispersion of the dye to mixed solution 1, stir evenly to form mixed solution 2, and then add the aqueous solution of dimethylimidazole (Hmim) to mixed solution 2 to form For the reaction mixture 3, the mixture 3 was stirred at 25-35°C for 20-40min, then centrifuged at 8000rpm~12000rpm for 10min, and washed three times with a mixed solution of ethanol and water with a volume ratio of 1:1. 10000rpm, centrifuge for 10min, and finally dry at 55-80℃ to obtain Dye@MOFs new composite pigment;
[0029] The second step is the preparation of new hair dyeing materials based on Dye@...
Embodiment 1
[0032] The dye molecule selected in this embodiment is basic fuchsin.
[0033] (1) Preparation of new Dye@MOFs composite pigments:
[0034] Add 0.2mL (1.4 mmol) TEA solution to 1mL Zn(NO 3 ) 2 •6H 2 In the aqueous solution of O, stir evenly to form a mixed solution 1, add 4 mL of an aqueous dispersion of basic fuchsin with a molar concentration of 2 mM into the mixed solution 1, stir evenly to form a mixed solution 2, and then add 3 mL of Hmim with a molar concentration of 2.5 M The aqueous solution of the solution was added to the mixed solution 2 to form the reaction mixed solution 3. The mixed solution 3 was stirred at 30°C for 30min, then centrifuged at 11000rpm for 10min, and washed three times with a mixed solution of ethanol and water (1:1) (10000rpm , 10min), and finally dried at 75°C to obtain Dye@MOFs new composite pigment material.
[0035] (2) Preparation of new hair dyeing materials based on Dye@MOFs composite pigments:
[0036] Heat 50mL of ascorbic acid aqu...
Embodiment 2
[0040] In this embodiment, basic fuchsin and basic blue are selected as dye molecules, and the amount of addition is 2 mL of basic fuchsin with a molar concentration of 2 mM and 2 mL of basic blue with a molar concentration of 2 mM. All the other steps are the same as in Example 1.
[0041] The obtained hair dye material has a color of orange and blue, that is, a magenta hair dye material. The microscopic scale of the obtained hair dye material is about 43nm, and the dyeing thickness is controlled to be about 2.2 μm. It also has the same covering properties and color fastness as the material obtained in Example 1.
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