Iota Silicone Oil (Anhui) Co., Ltd
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There are two main preparation methods of colorant granules. The first method is the same as other granulation methods of powdery complexes: first, the powdery colorant is soaked with surfactant, then extruded by wax melting or melting with resin, and then granulated; the second method is that the colorant is soaked with surfactant, then refined by mechanical force to form a certain concentration of dispersions, then mixed with latex and co-precipitated, dried and then rolled to granulate. 。 Granular colorants are easy to use, good dispersibility, no dust flying, no pollution to the environment, bright color, uniform hair color, no color difference. It is a promising coloring method. However, the preparation process of granular colorant is complex and high cost, which limits its wide application.
