Titanium Dioxide for Coatings
Inter-China Chemical supplies rutile titanium dioxide pigments for architectural, industrial, water-based, solvent-based, powder, coil, can, marine and specialty coatings. The portfolio includes multipurpose, exterior-durable, high-gloss, matt-finish, economical and special-effect grades for different formulation requirements.
Grade selection should consider the binder system, pigment volume concentration, dispersion process, opacity, color, gloss, oil absorption, exterior exposure and film-performance requirements. Candidate grades should be compared under the same formulation, dispersion and application conditions.
Titanium Dioxide Grades for Coatings
Select a starting grade according to the binder system, pigment volume concentration, target finish and exposure conditions. Final qualification should be completed in the customer’s actual coating formulation.
R-F 9300 ·
R-F 9400 ·
CR-85
Starting points for formulations requiring a balance of color, opacity, dispersion, gloss and multipurpose performance.
R-F 9489
A water-based coating grade to evaluate for dispersion, opacity, color and formulation compatibility.
R-F 9490 ·
CR-81
Grades for water-based, coil and powder-coating systems requiring color, dispersion and durability evaluation.
R-F 9290
Designed for matt emulsion paints, primers and other matt systems where water demand and film integrity require evaluation.
R-F 9300 ·
R-251 ·
CR-85
Candidate grades for solvent-based, can and marine coatings requiring opacity, gloss, color and durability.
R-F 8100 ·
R-F 8150
Economical rutile grades for cost-sensitive paint and coating formulations requiring application-specific qualification.
CR-89
Nano rutile grade for metallic and special-effect coatings requiring angle-dependent appearance and light-resistance evaluation.
The grade recommendations above are starting points. Binder chemistry, dispersant package, pigment volume concentration and curing conditions can change final performance.
Coating Applications and Formulation Systems
How Titanium Dioxide Works in Coating Formulations
Titanium dioxide is used in coatings primarily to scatter visible light, helping formulations achieve opacity, whiteness and color brightness. Its optical efficiency depends on particle dispersion and spacing, pigment volume concentration, binder compatibility and dry-film thickness.
Surface treatment and crystal form also influence dispersion, gloss, weatherability and formulation stability. Rutile grades are generally preferred for demanding exterior and high-durability coatings, while the final grade should be qualified in the customer’s actual binder system and application conditions.
Responsible Handling and Finished-Coating Considerations
Titanium dioxide pigment should be handled in accordance with the product Safety Data Sheet (SDS). During transfer, weighing and mixing, airborne dust should be controlled through appropriate handling procedures, local exhaust ventilation and suitable personal protective equipment. Applicable requirements may vary according to workplace conditions and local regulations.
In a properly formulated and cured coating, titanium dioxide is dispersed within the binder matrix. The performance, safety and regulatory status of the finished product depend on the complete formulation, intended use, application method and applicable regulations. Finished coatings should therefore be evaluated and documented for their specific end-use conditions.
How to Select Titanium Dioxide for Paints and Coatings
Titanium dioxide grade selection should be based on the coating system, pigment volume concentration, dispersion process, required opacity, gloss, color, weatherability and final application conditions. The following guide provides practical starting points for laboratory evaluation.
Select a Starting Grade by Coating Application
| Coating Application | Key Selection Priorities | Suggested Starting Grades |
|---|---|---|
| Multipurpose decorative and industrial coatings | Opacity, color, dispersion, gloss and formulation flexibility | R-F9300, R-F9400, CR-85 |
| Water-based architectural coatings | Water dispersibility, opacity, viscosity response and film appearance | R-F9489, CR-81 |
| Exterior, coil and powder coatings | Weatherability, color retention, gloss retention and process compatibility | R-F9490, CR-81, CR-85 |
| Matt coatings, primers and high-PVC systems | Matting contribution, water demand, hiding and formulation balance near or above CPVC | R-F9290 |
| Solvent-based, can and marine coatings | Dispersion, gloss, opacity, durability and binder compatibility | R-F9300, R-251, CR-85 |
| Economical general-purpose formulations | Cost-performance balance and formulation-specific evaluation | R-F8100, R-F8150 |
| Automotive metallic and special-effect coatings | Transparency balance, effect-pigment visibility, color control and exterior exposure | CR-89 |
Key Formulation Variables
Binder and Carrier System
Confirm compatibility with water-based, solvent-based, high-solids, powder or other coating systems before comparing optical performance.
PVC and CPVC
Pigment volume concentration affects opacity, gloss, porosity and film structure. High-PVC and matt systems may require different pigment characteristics from gloss coatings.
Dispersion Process
Dispersant selection, addition sequence, shear conditions and milling time influence agglomerate breakdown, viscosity, gloss and optical efficiency.
Surface Treatment
Inorganic and organic surface treatments influence dispersion behavior, moisture response, gloss, photoactivity and outdoor-durability performance.
Recommended Evaluation Indicators
Candidate grades should be compared at the same TiO₂ loading and under the same dispersion, application and curing conditions. Depending on the coating system, the evaluation may include:
- Contrast ratio, hiding power and dry-film opacity
- L*, a* and b* color values and undertone
- Tinting strength and color development
- Gloss, haze and surface appearance
- Dispersion fineness, viscosity and storage stability
- Oil absorption and formulation demand
- Accelerated weathering, color retention and chalking resistance
- Film integrity and application performance in the complete formulation
Practical Qualification Workflow
- Define the binder system, application method and target performance.
- Select two or three candidate grades using the application guide.
- Prepare formulations at equal TiO₂ loading and controlled dispersion conditions.
- Compare optical properties, rheology, film appearance and durability requirements.
- Optimize pigment loading and dispersant demand before final qualification.
- Confirm the selected grade in the customer’s actual production and application process.
Product suitability, handling requirements and regulatory status depend on the complete formulation, production process, intended use and applicable jurisdiction. Consult the relevant Technical Data Sheet and Safety Data Sheet, and complete application-specific qualification before commercial use.