Titanium Dioxide Dispersion in Industrial Coatings

Dispersing titanium dioxide (TiO₂) in high-solids industrial coatings (NVV≥80%) often causes agglomeration due to surface energy differences, leading to hiding power loss, viscosity surge, and storage gelation. One anti-corrosion coating manufacturer reported 4500mPa·s viscosity in TiO₂ paste and 15% hiding power fluctuation with traditional dispersants.

Chemi Tech’s Innovation:

KMT-4130 achieves three breakthroughs:

Nano-anchoring technology:

Phosphate groups form covalent bonds (≥150kJ/mol) with TiO₂ surface hydroxyls, replacing physical adsorption to prevent desorption during grinding.

Low-polarity compatibility:

Excellent solubility in xylene/MAK solvents, reducing viscosity by >60% (from 4500mPa·s to 1800mPa·s).

Thermal stability:

Maintains TiO₂ D50≤0.4μm after 30-day storage at 60°C.

Case Study:

At a container coating plant (85% NVV epoxy primer):

Dosage: 1.8% on TiO₂ weight added during grinding;

Results:

Grinding time shortened by 40%, hiding power improved to 98.5%;

Zero sedimentation after 60 days at 50°C, leveling enhanced (Ra≤0.15μm).

Deployed in marine and machinery coatings, compatible with solvent/water-based epoxy/PU.