The white masterbatch is a new type of polymer composite coloring material made by a high proportion of colorants, carrier resins and various additives after good dispersion. Colorant is the basic component of masterbatch, the content is generally between 20%-80%. White masterbatch usually uses titanium dioxide, barium sulfate, lithopone, zinc sulfide, calcium carbonate, etc. as colorants, black masterbatch uses carbon black as colorant, and color masterbatch uses azo pigments, phthalocyanine pigments, and quinacridine Ketone pigments, iron oxide red, metal powder, pearl powder and dyes are colorants.

Resin is the carrier of the white masterbatch, which has the properties of being softened by heat and hardened by cooling, and has the characteristics of no chemical reaction. The resin is melted and sheared to make the colorant evenly distributed in it. In order to ensure the compatibility of the carrier with the colored plastic, resin of the same type as the colored plastic is usually selected as the carrier, which is beneficial to the better dispersion of the colorant. Dispersants are additives, which can promote the uniform dispersion of the colorant in the resin and no longer agglomerate. At present, the commonly used dispersants include polyethylene low-molecular wax, stearate, and ethylene glycol.

According to the use and performance requirements of the product, various other additives, such as antistatic agents, antioxidants, brighteners, light stabilizers, foaming agents, antibacterial agents, matting agents, and antistatic agents, need to be added during the preparation of the masterbatch. Varieties such as inflammable agents, which give plastic products special functions.

White masterbatch can be divided into ordinary masterbatch and functional masterbatch according to whether it has special functions. Ordinary masterbatch can meet the coloring of plastic products; functional masterbatch gives specific functions while coloring plastic products, such as Make the colored plastic products have one or more functions and characteristics such as antistatic, weather resistance, foaming, antibacterial, matting, and flame retardant.

According to the color, it can be divided into white masterbatch, black masterbatch, color masterbatch and so on.

According to the purpose, it can be divided into injection masterbatch, blown film masterbatch, spinning masterbatch and so on. According to the carrier, it can be divided into ABS masterbatch, HIPS masterbatch, PE masterbatch, PP masterbatch, PVC masterbatch, EVA masterbatch, PA masterbatch, etc.