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High-Quality Rutile Titanium Dioxide THR-218 from China Suppliers and Factory for Superior Pigment Performance
It is an alumina/zirconium modified rutile, multipurpose TIO2 pigment produced by sulfate process. Preciously process control, good particle size and narrow size distribution offer it good whiteness, easily disperse, Low OA, high tinting strength.
THR-218 Rutile Titanium Dioxide (TiO₂) is a rutile-grade white pigment powder designed to deliver strong optical performance in a wide range of formulations. Thanks to its high refractive index, rutile TiO₂ typically provides excellent hiding power (opacity) and high tinting strength, helping finished products achieve higher whiteness, brightness, and gloss with a clean, neutral-to-slightly bluish undertone.
To improve application performance, this type of rutile pigment is commonly engineered with inorganic surface coatings (e.g., silica and/or alumina) and may also receive organic surface treatment. These treatments are intended to enhance wetting and dispersion, reduce oil absorption, and stabilize rheology, which can translate into faster dispersion, more consistent viscosity control, smoother film appearance, and reduced haze in coatings or plastics. Rutile grades are also known for comparatively strong weatherability, heat resistance, and chemical resistance, supporting durability and helping reduce issues such as chalking, discoloration, or yellowing in demanding outdoor or high-temperature applications.
THR-218 can be used in architectural and industrial coatings, powder coatings, coil coatings, wood finishes, printing inks, and plastic masterbatches/compounds (including PVC, PP, PE, ABS, etc.). It is also applicable in papermaking, adhesives, and rubber products where reliable opacity and color strength are required.
Application & Usage
Coating & Paint
Architectural, Industrial, Powder, Coil, Wood finishes.
Architectural, Industrial, Powder, Coil, Wood finishes.
Plastics
PVC, PP, PE, ABS, Masterbatches and compounds.
PVC, PP, PE, ABS, Masterbatches and compounds.
Printing Inks
Reliable opacity and color strength for various ink systems.
Reliable opacity and color strength for various ink systems.
Other Uses
Papermaking, Leather, Adhesives, and Rubber products.
Papermaking, Leather, Adhesives, and Rubber products.
Applicable Types: General purpose.
Usage Tips: For best results, pre-wet the pigment with the binder/solvent system, select a compatible dispersant, and use high-speed dispersion or milling to reach the target fineness and maximize opacity and color consistency. Store in a cool, dry place, keep containers tightly sealed, and protect from moisture, heat, and direct sunlight to minimize caking and contamination.
Usage Tips: For best results, pre-wet the pigment with the binder/solvent system, select a compatible dispersant, and use high-speed dispersion or milling to reach the target fineness and maximize opacity and color consistency. Store in a cool, dry place, keep containers tightly sealed, and protect from moisture, heat, and direct sunlight to minimize caking and contamination.
Technical Properties
| Property | Value / Specifications |
|---|---|
| TiO2 Content | ≥94% |
| Inorganic treatment | Zr/Al |
| Organic treatment | Yes |
| Brightness | ≥95.0% |
| Oil absorption | ≤19g/100g |
| b | ≤2.9 |
| Tinting strength | ≥1900 |
| Average particle size(μm) | 0.32 |
| Moisture 105℃ | ≤0.5 |
| Durability | Good |
Frequently Asked Questions
1. What makes THR-218 a multipurpose pigment?
THR-218 is an alumina/zirconium modified rutile TiO2 produced via the sulfate process. Its precise particle size control and narrow distribution make it suitable for a wide range of applications including coatings, plastics, and inks.
2. How does the surface treatment affect its performance?
It features both inorganic (Zr/Al) and organic surface treatments. these enhance wetting, improve dispersion, reduce oil absorption, and stabilize rheology for smoother film appearance and better weatherability.
3. What are the optical characteristics of this rutile grade?
It offers high refractive index providing excellent hiding power (opacity), high tinting strength, and high brightness with a clean neutral-to-bluish undertone.
4. Can THR-218 be used in outdoor applications?
Yes, rutile grades like THR-218 are known for strong weatherability and chemical resistance, which helps prevent chalking, discoloration, or yellowing in outdoor environments.
5. What is the recommended storage for this pigment?
It should be stored in a cool, dry place with containers tightly sealed. It is important to protect the product from moisture, heat, and direct sunlight to prevent caking.
6. How should I achieve maximum opacity during production?
For optimal results, pre-wet the pigment with the binder system and use high-speed dispersion or milling to reach the target fineness.