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Highly dispersible silica-based pigment for consistent color development and reduced agglomeration.
Enhanced rheology control in liquid systems without compromising flow or application properties.
Thermally stable up to 250 °C, supporting high-temperature processing conditions.
Low abrasivity compared to conventional mineral pigments, minimizing equipment wear.
Surface-treated for improved compatibility with organic matrices including silicones, polyurethanes, and epoxy resins.
Color-stable silicone rubber compounds for medical and automotive sealing components.
Pigmented polyurethane coatings requiring long-term UV resistance and gloss retention.
High-performance epoxy encapsulants and adhesives in electronics manufacturing.
Heat-resistant industrial inks for metal and ceramic substrate decoration.
| Chemical Type | Surface-modified fumed silica pigment |
| Product Form | Free-flowing dry powder |
| Appearance | White to off-white fine powder |
| Primary Applications | High-performance pigmented elastomers, coatings, and encapsulants |
| Key Features | Dispersion stability, thermal resilience, low oil absorption |
| Benefits | Reduced batch variability, extended pot life, improved mechanical integrity |
| pH (4% aqueous slurry) | 4.0–6.0 |
| Bulk Density | 40–60 g/L |
Q1: What is the primary function of TIXOSIL 331 in polymer systems?
A: TIXOSIL 331 is a surface-modified synthetic silica pigment designed to provide controlled rheology, improved dispersion stability, and enhanced matting or anti-blocking performance—particularly in solvent-based and high-solids coatings, inks, and specialty polymer formulations.
Q2: Is TIXOSIL 331 compatible with both polar and non-polar resin systems?
A: Yes—its proprietary surface treatment imparts balanced compatibility across a broad range of organic media, including acrylics, polyurethanes, alkyds, and epoxy resins. Optimal dispersion typically requires appropriate high-shear mixing or milling, especially in low-viscosity systems.
Q3: How should TIXOSIL 331 be incorporated into a formulation to ensure optimal performance?
A: It is recommended to pre-disperse TIXOSIL 331 using high-shear agitation or bead milling in a portion of the vehicle or solvent prior to addition to the full batch. Avoid dry addition directly into low-viscosity or highly reactive systems without adequate wetting.
Q4: Does TIXOSIL 331 require special handling or storage conditions?
A: Store in a cool, dry place in original sealed packaging to prevent moisture uptake. While not classified as hazardous for transport, standard industrial hygiene practices—including dust control during handling—are recommended due to its fine particulate nature.
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E-mail: wangxingqiang@ericwchem.com
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