According to the chemical composition, the colorants used in polyurethane include inorganic colorants and organic colorants. Each can be divided into two types: pigments and dyes. Generally speaking, pigments and dyes are colored differently, and dyes can penetrate into the interior of objects for coloring, such as the inside of fibers; Pigments, on the other hand, can only act on the surface of objects. Pigments and dyes come in a variety of colors.
According to polyurethane products, the amount of colorant and color used in different polyurethane products are different. Among them, a large number of colorants are used in synthetic leather, which is the largest type of colorant in polyurethane products.
The second is the polyurethane sole industry. China is the world's largest shoe producer, with thousands of sole manufacturers. Compared with other material soles, polyurethane soles have many advantages such as lightness, abrasion resistance, soft texture and non-slip. Black, white, gray, brown colorants are usually used on the sole.
With the basic colorant, any other color can be obtained by mixing the basic colorant. Among the colorful colorants, people are still researching and developing new products. The new colorants will be more efficient, less expensive, healthier and more environmentally friendly.
