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                                                                   Industry Insight | Titanium Dioxide Applications

APPLICATIONS OF R-906 AND HR-991
TITANIUM DIOXIDE IN ADHESIVE SYSTEMS

Titanium dioxide is the world's most consumed white pigment, with coatings accounting for the largest share of its downstream demand, exceeding 60%; plastics are the second largest application area. However, in the niche market of adhesives , titanium dioxide also plays an irreplaceable multifaceted role—it is not only a colorant that gives the adhesive layer its white color, but also a key functional filler that enhances the product's weather resistance, mechanical properties, and even additional functions.

TITANOS will participate in the 29th China International Adhesives & Sealants Exhibition (ASE CHINA) from September 15-17, 2026 , at booth E1167 in Hall E1 of the Shanghai New International Expo Centre . We welcome you to visit our booth to exchange ideas and gain a deeper understanding of the application solutions and technical experience of R-906, HR-991, and other adhesive industry supporting products.

1. Introduction: The Role of TiO₂ in Adhesive Systems

Titanium dioxide (TiO₂) is a high-performance white pigment used where whiteness, brightness, opacity and visual consistency are important. In white and light-coloured adhesive and sealant systems, these properties can influence the appearance and coverage of the finished product.

The source material focuses on two rutile grades: R-906, a sulfate-process grade, and HR-991, described in available Titanos technical information as a chloride-process rutile grade. Their different process and surface-treatment characteristics make them useful candidates for comparative formulation trials.                                                

2. Key TiO₂ Performance Requirements for Adhesives

3. R-906 — Sulfate-Process Rutile TiO₂

Titanos describes R-906 as a sulfate-process rutile titanium dioxide with zirconium and aluminium inorganic coating and polyol organic treatment. Published information emphasizes high gloss, excellent dispersion, high weatherability, high hiding power, fine particle size and uniform particle-size distribution.

3.1  R-906 Parameters

4. HR-991 — Chloride-Process Rutile TiO₂

Available Titanos/HYYCHEM technical information describes HR-991 as a chloride-process rutile titanium dioxide and an improved HR-990 series product with higher covering power, lower oil absorption, good stability, colour-killing capacity and weather resistance. Published materials list uses in paints, inks, plastics and other applications.

For adhesive systems, these characteristics are relevant where a formulation requires a clean white appearance, opacity and efficient pigment dispersion. The available technical information does not establish adhesive-specific approval, so application testing is recommended.

4.1 HR-991 Parameters

Note: HR-991 values differ between published versions. For quotations, trials and COA documentation, use the current official Titanos TDS and lot-specific COA.

5. R-906 vs. HR-991 — Practical Selection Guide

6. Potential Adhesive & Sealant Applications

White construction adhesives: Whiteness and opacity where a clean finished appearance is required.

Water-based adhesive systems: Good dispersion helps maintain uniform pigment distribution.

Solvent-based adhesive systems: Wetting and dispersion should be evaluated in the actual resin/solvent package.

Adhesive tapes and films: TiO₂ can contribute to white appearance and visual coverage; compatibility must be tested.

Lamination adhesives: Optical consistency can matter where the adhesive contributes to the appearance of a multilayer structure.

White sealants: TiO₂ can provide opacity and a clean white finish, subject to polymer and curing-package compatibility.

7. Recommended Customer Trial

1. Run R-906 and HR-991 alongside the customer’s current TiO₂ at the same loading.

2. Use the customer’s normal mixing and dispersion process.

3. Compare whiteness, opacity, gloss and colour consistency.

4. Record viscosity/rheology and observe wetting and agglomeration.

5. Check storage stability, settling and viscosity drift.

6. Prepare cured films or bonded specimens and compare required performance.

7. Calculate total formulation cost after considering pigment loading and processing performance.

8. Titanos Promotional Material — ASE China 2026

The supplied visual identifies Shanghai Titanos Industry Co., Ltd. and its ASE China 2026 participation at Hall E1, Booth E1167. It is retained as the report’s closing marketing visual.

9. Packaging, Storage & Handling

Published Titanos information lists 25 kg bags and larger palletized packaging for TiO₂ grades. Store TiO₂ dry and protected from contamination. For occupational handling and detailed precautions, always use the current product SDS.

10. Conclusion

R-906 and HR-991 are two rutile TiO₂ options that can be screened for white adhesive and sealant formulations. R-906 is positioned around strong optical performance, dispersion, gloss and hiding power, while available HR-991 information emphasizes covering power, stability, weather resistance and lower oil absorption.

The most reliable selection method is a controlled side-by-side trial in the customer’s real formulation. This allows the adhesive manufacturer to balance appearance, opacity, dispersion, rheology, stability, final performance and formulation cost.

Shanghai Titanos — Your Trusted Partner in Titanium Dioxide Supply

For product information, technical documents, samples or quotations, please contact the Titanos sales team.

www.titanos.com  |  sales@titanos.com.cn