High-solids, solvent-based methyl-phenyl silicone resin offering excellent thermal stability and oxidation resistance.
Provides superior hardness, chemical resistance, and UV durability in protective coatings.
Designed for compatibility with organic resins including alkyds, acrylics, and epoxies to enable hybrid formulation flexibility.
Delivers enhanced mar resistance and gloss retention in demanding industrial coating systems.
Enables low-cure temperature performance while maintaining robust film integrity and adhesion.
High-performance industrial maintenance coatings for metal substrates.
Heat-resistant coatings for exhaust systems, stoves, and industrial ovens.
Durable topcoats for architectural metal cladding and façade systems.
Hybrid silicone-organic coatings for transportation equipment and heavy machinery.
Protective clearcoats requiring long-term weatherability and chemical exposure resistance.
| Chemical Type | Methyl-phenyl silicone resin |
| Product Form | Solvent solution (xylene/white spirit blend) |
| Appearance | Clear, colorless to pale yellow liquid |
| Solids Content | 60 ± 2 wt% |
| Viscosity (25°C, mPa·s) | 1,200 – 2,500 (Brookfield DV-II+ @ spindle #3, 20 rpm) |
| Density (25°C, g/cm³) | 0.94 – 0.97 |
| Flash Point (PMCC, °C) | 45 – 55 |
| Primary Applications | Heat-resistant and durable industrial coatings |
Q1: What is the primary function of COATOSIL DSA6 in coating formulations?
A: COATOSIL DSA6 is a solvent-based silicone resin designed to enhance surface functionality—particularly improving mar resistance, slip, and substrate wetting—while maintaining compatibility with organic resin systems such as acrylics, polyurethanes, and alkyds.
Q2: Is COATOSIL DSA6 suitable for waterborne coatings?
A: COATOSIL DSA6 is supplied in aromatic and/or aliphatic hydrocarbon solvents and is not inherently water-dispersible. For waterborne systems, it typically requires pre-dilution in a water-miscible co-solvent or incorporation via high-shear emulsification—but performance and stability must be validated case by case.
Q3: How does COATOSIL DSA6 differ from standard silicone oils or fluid additives?
A: Unlike linear silicone fluids, COATOSIL DSA6 is a branched, partially crosslinked silicone resin with reactive silanol groups. This structure enables stronger interfacial anchoring and improved film integration, resulting in more durable surface effects and reduced tendency to bloom or migrate over time.
Q4: What are typical dosage levels when using COATOSIL DSA6 in industrial coatings?
A: Dosage depends on formulation requirements and desired performance level, but it is typically used at low concentrations—generally ranging from 0.1% to 2% by weight relative to total solids—to achieve optimal balance of surface enhancement without compromising film integrity or gloss.
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