Such masterbatches have now been developed by Tosaf as cylindrical as well as spherical granules. They are the result of a study initiated by Tosaf Benelux R&D on ways to find alternatives for the white colouring of plastics. Although their formulation does not contain unbound titanium dioxide, their opacity as well as their colour strength is on the same high level as that of standard TiO2 masterbatches at equal let down rate. The colour shade itself can be adjusted from yellowish to neutral to bluish. As this applies regardless of the carrier system, Tosaf's new patent-pending white masterbatches are compatible with any host polymer. The low abrasiveness allows for long tool life, and no plate-out occurs when processed on two-roll systems.
Michel Theunisz, General Manager of Tosaf Benelux, says: “With the development and launch of our new Non-TiO2 white masterbatches, available in a wide range of polymer carrier systems, we are giving plastics processors and brand owners the answer to the dilemma they have when it comes to white coloration of plastics for food packaging, cosmetics packaging, medical packaging and toys, regardless the process and regardless the end application. Tosaf’s new white masterbatches allow the plastics market to proactively take action on reducing the use of TiO2 in Plastics”.