STD series liquid colorant products are used for leather coloring. They have strong coloring power, bright and transparent colors, high gloss, no color migration, precipitation, and agglomeration. They can perfectly solve the contradiction between poor performance of traditional color concentrates and poor permeability of color pastes, and have good compatibility with other resins. At the same time, compared with dyes or color concentrates, their migration resistance and light resistance have also been greatly improved. They have significant advantages and effects when used in PU synthetic leather dry process and some post-processing processes.




