What is White Masterbatch?
In the plastics industry, achieving flawless whiteness, maximum opacity, and high gloss fundamentally relies on selecting the right masterbatch formulated with high-quality Titanium Dioxide (TiO2). At Colorex Masterbatch, we manufacture innovative white masterbatch series that add value to your polymer processes. Rutile vs. Anatase Titanium: Why We Use Rutile There are two distinct crystalline structures of Titanium Dioxide used in the industry: Anatase and Rutile.
Anatase pigments have a lower refractive index and exhibit photocatalytic activity, which causes the polymer to rapidly degrade, chalk, and yellow under sunlight (UV). At Colorex, we strictly do not use Anatase. Instead, we exclusively utilize advanced engineering-grade "Rutile" Titanium Dioxide. Rutile has the highest refractive index (2.73) and offers absolute resistance to outdoor weathering and UV radiation, ensuring ultimate opacity and a striking gloss even at the lowest let-down ratios.
The Synergy of Micronized Calcite (CaCO3) and Enhanced Opacity
In our advanced laboratory formulations, we utilize special micronized calcite (Calcium Carbonate) technology to prevent the agglomeration of TiO2 particles within the polymer matrix. Micronized calcite acts as a "spacer" between titanium particles. This engineering approach significantly increases light scattering within the polymer, thereby maximizing the product's opacity and enhancing its mechanical strength.
Food Contact Compliance and Safety
Our white masterbatch series, produced for product groups that come into contact with human health, have low migration values and fully comply with international food contact regulations (FDA, REACH, RoHS).
CONCENTRATION AND UNINTERRUPTED STOCK GUARANTEE
We possess a vast production capacity that fully adapts to your processing technology, alongside an uninterrupted stock guarantee:
- 40% - 50% Rutile TiO2 Ratio: The ideal cost-performance balance for injection molding and general plastic applications.
- 60% - 70% Rutile TiO2 Ratio: Specially concentrated formulas for ultra-thin films and advanced engineering projects requiring maximum opacity.
You can contact our laboratory engineers to determine the optimal formula for your production process, review our technical data sheets (TDS), and immediately benefit from our continuous stocks.