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Highly dispersible precipitated silica optimized for pigmentary performance in demanding coating systems.
Controlled particle size distribution ensures excellent opacity, tinting strength, and gloss retention.
Low oil absorption supports high solids formulations without compromising rheology or application properties.
Surface-treated for enhanced compatibility with both polar and non-polar resin systems.
Consistent batch-to-batch quality meeting stringent ISO 9001 manufacturing standards.
Waterborne architectural coatings requiring high whiteness and scrub resistance.
Premium industrial maintenance paints for corrosion protection and aesthetic durability.
UV-curable inks and coatings where low volatility and high transparency are critical.
Automotive refinish basecoats requiring uniform color development and spray atomization stability.
| Chemical Type | Precipitated amorphous silica (SiO₂) |
| Product Form | Free-flowing white powder |
| Appearance | White, odorless, non-toxic powder |
| Primary Applications | Pigment extender and functional filler in liquid coatings and inks |
| Key Features | High surface area, low density, surface-modified for dispersion stability |
| Benefits | Improved hiding power, reduced TiO₂ demand, enhanced film integrity |
| pH (4% aqueous suspension) | 6.0 – 7.5 |
| Loss on Drying (105°C, 2 h) | ≤ 5.0 wt% |
Q1: What is the primary function of Solvay ZEOSIL 1165MP Pigment in polymer systems?
A: Solvay ZEOSIL 1165MP Pigment is a high-purity, surface-modified synthetic amorphous silica designed primarily as a reinforcing and rheology-modifying additive in demanding polymer applications—especially in high-performance elastomers and thermoplastics where controlled viscosity, improved dispersion, and enhanced mechanical properties are required.
Q2: How does ZEOSIL 1165MP differ from conventional fumed or precipitated silicas?
A: Unlike standard precipitated silicas, ZEOSIL 1165MP features a tailored particle morphology and proprietary surface treatment that improves compatibility with non-polar polymers, reduces mixing energy requirements, and supports more uniform dispersion—leading to better processability and reduced risk of agglomeration in final compounds.
Q3: Is ZEOSIL 1165MP suitable for use in food-contact or medical-grade polymer formulations?
A: While ZEOSIL 1165MP is manufactured under strict quality control and meets general industrial purity standards, it is not pre-qualified for regulated food-contact or medical applications. Formulators must conduct full regulatory evaluation—including extractables testing and compliance verification—within their specific end-use system and jurisdiction before approval.
Q4: What are typical processing recommendations for incorporating ZEOSIL 1165MP into rubber compounds?
A: For optimal dispersion in rubber matrices, ZEOSIL 1165MP is generally introduced during the non-productive mixing stage at elevated temperatures. It is recommended to avoid over-mixing and to allow sufficient time for silica–polymer interaction; dosage typically ranges from 0.1% to 2% by weight depending on the base polymer and target performance profile.
Q5: Can ZEOSIL 1165MP be used in combination with other fillers such as carbon black or calcium carbonate?
A: Yes—ZEOSIL 1165MP is frequently used in hybrid filler systems to balance reinforcement, cost, and processing behavior. When combined with carbon black, it can enhance modulus and dynamic properties without significantly increasing compound hardness; compatibility with mineral fillers like calcium carbonate depends on surface polarity matching and requires empirical optimization in the formulation.
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