The addition of precipitated barium sulphate to the masterbatch can replace the pigment and affect the coloring of the product. Precipitated barium sulphate was applied to replace red, yellow, green and blue pigments in different proportions in polyolefin color masterbatch. In the properties of the film and sample products made of the color masterbatch, such as coloring power, reflectance and transmittance, it can be seen that precipitated barium sulphate has different substitution amount in different colors of pigments, and the total substitution amount can reach about 20% on average. Its coloring effect in plastic products will not decrease, and even improve, not only does not affect the coloring of products, but also reduces the production cost;
When precipitated barium sulphate replaces 20% of titanium dioxide pigment, the covering power of the product is greatly improved and the whiteness is relatively improved while other properties of the white masterbatch remain basically unchanged. For different crystal types of titanium dioxide pigments, the addition of precipitated barium sulphate can improve the covering power and whiteness of the products.
Therefore, when precipitated barium sulphate is added to the masterbatch production, it improves the covering power of the masterbatch product and increases the good effect of the whiteness of the product, and also helps to improve the dispersion of titanium dioxide. The choice of coating surface gloss is as important as the color.
Original Source: https://www.pairshorseschem.com/news/application-of-barium-sulphate-in-the-production-of-color-masterbatch/
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