China Titanium Dioxide Rutile NTR-601 - Top Suppliers and Factory for Superior Dispersibility and Heat Resistance

NTR-601 is marketed as a high-grade rutile titanium dioxide pigment for plastic applications where both optical cleanliness and processing behavior must meet a higher bar. The product page emphasizes outstanding dispersibility and processing flowability, a blue undertone, strong heat resistance, and good melt flowability. For polymer processors, this combination aims to reduce common problems such as visible specks, shade variation across production runs, and yellowing after high-temperature processing. A blue undertone is also frequently chosen in plastics to counteract slight yellow casts that can appear after repeated heat histories.

The application list includes PE (polyethylene), PVC plastics, PP, ABS, engineering plastics, pipes, and masterbatch, and it is positioned for high-grade plastic specialized products. In masterbatch manufacturing, the pigment needs to disperse rapidly and uniformly at high loading so that downstream converters can dose concentrate reliably and still achieve uniform opacity. In pipes and profiles, heat resistance helps maintain whiteness through long extrusion runs and thick sections. In ABS and engineering plastics, where processing temperatures are often higher, good dispersion and thermal stability help keep the final part looking bright and consistent. In practice, the pigment should be introduced with adequate shear (for example, twin-screw compounding) and with moisture control to keep feeding and dispersion stable.

The technical properties on the page are unusually detailed for a plastic-focused TiO2. TiO2 content is 97.0% and rutile content is 98.0%. Dry powder whiteness (CIE L*) is 98.5 and tint reducing power is 1950, supporting strong optical contribution. Oil absorption is 15 g/100 g, which helps preserve melt flow and reduces viscosity build compared with higher-oil-absorption grades. Volatiles at 290°C are listed as ≤ 0.3%, and the page includes processing indicators such as MFR 28 g/10 min and FPV 0.04 bar/g. It also notes Pb, As, Hg, and Cr6+ at 10 ppm and states that PBBs are not contained, which can be useful for compliance screening. Density is listed as 4.1 g/cm3. Overall, NTR-601 is positioned as a plastics-oriented rutile TiO2 for customers who need premium dispersion, stable whiteness, and reliable processing performance in masterbatch and high-temperature polymer applications.