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Free-flowing, solvent-free silicone powder with excellent storage stability.
High thermal stability up to 250 °C for extended service life in demanding environments.
Outstanding water repellency and moisture resistance without compromising substrate adhesion.
Easy dispersion in aqueous and solvent-based systems without agglomeration.
Low surface energy enabling effective anti-blocking and release functionality in coatings and composites.
Water-repellent additives for mineral-based construction materials (e.g., mortars, renders, plasters).
Functional filler in high-performance powder coatings for architectural and industrial applications.
Hydrophobizing agent for insulation materials including mineral wool and expanded polystyrene (EPS).
Surface modifier in flame-retardant composites and fire-resistant building boards.
Performance enhancer in silicone-modified cementitious grouts and tile adhesives.
| Chemical Type | Methyl-phenyl silicone resin |
| Product Form | Free-flowing dry powder |
| Appearance | White to off-white granular powder |
| Primary Applications | Hydrophobization of porous inorganic substrates |
| Key Features | Solvent-free, non-volatile, low dust generation |
| Benefits | Improved durability, reduced water absorption, enhanced freeze-thaw resistance |
| pH (1% aqueous dispersion) | 5.0–7.0 |
| Storage Stability | ≥24 months at ≤25 °C in sealed original packaging |
Q1: What is the primary function of SILRES Powder D in coating and ink formulations?
A: SILRES Powder D acts as a hydrophobic, thermally stable silicone resin additive that enhances surface slip, improves scratch resistance, and reduces surface tension—enabling better substrate wetting and defect suppression without compromising film integrity.
Q2: Is SILRES Powder D compatible with water-based systems?
A: Yes, SILRES Powder D is specifically engineered for compatibility with aqueous dispersions and emulsion-based systems. It disperses readily with mild mechanical agitation and remains stable under typical pH conditions encountered in waterborne coatings and inks.
Q3: How does SILRES Powder D differ from liquid silicone resins in terms of handling and formulation?
A: As a free-flowing dry powder, SILRES Powder D eliminates solvent handling, simplifies dosing accuracy, avoids viscosity spikes during incorporation, and provides improved storage stability compared to solvent- or carrier-based liquid alternatives.
Q4: What thermal stability can be expected when SILRES Powder D is incorporated into cured films?
A: Films containing SILRES Powder D retain silicone-derived functionality up to approximately 200 °C, offering enhanced thermal resilience and oxidative stability relative to conventional organic binders—making it suitable for applications requiring moderate heat resistance.
Q5: What is the typical dosage range for optimal performance in industrial coatings?
A: Dosage is formulation-dependent, but SILRES Powder D is typically used at low concentrations—generally ranging from 0.1% to 2% by weight of total solids—to achieve desired surface effects without interfering with crosslinking or film formation.
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