Improved pigment dispersion processing aids

The United States Struktol company developed a series of plastic processing aids based on its long-term development and production of rubber industry additives.

Struktol's processing aids aim to improve the mixing and dispersion of pigments in plastics and act as a lubricant. Compared with general dispersants, the color concentration of the polymer can be increased, and the process of uniformly mixing with the plastic due to the large amount of the pigment is difficult to proceed smoothly. The advantages for masterbatch users include: As the colorant acts as a lubricant in the masterbatch resin, the melt flow of the compound is improved, the surface of the final product surface is significantly reduced in depression, the mold is easy to mold, the mold expansion is small, and the mold release is small. Smooth, lower processing temperatures. No wax, so the product surface is not blooming. The laboratory evaluation results of TR251 as an alternative to EBS (ethylene bis stearamide) show that the product is more uniform in color, more vivid, strong in color, and the color saturation of the pigment. The TR251 is suitable for a wide range of plastics and has been approved by the FDA for use in contact with food. The European Environmental Council has also entered the final stage of its certification.

Source: Plastic Additives