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High-purity silicone flake resin with controlled particle size distribution for consistent dispersion.
Thermally stable up to 250 °C, maintaining structural integrity under elevated processing conditions.
Excellent compatibility with organic resins including acrylics, polyesters, and epoxies.
Low surface energy enabling superior slip, mar resistance, and substrate release performance.
Solvent-free flake form simplifies handling, storage, and incorporation without VOC concerns.
High-performance industrial coatings requiring scratch and abrasion resistance.
Release layers in composite manufacturing and molding processes.
Additive for powder coatings to enhance flow, leveling, and surface smoothness.
Functional filler in specialty inks for improved rub resistance and gloss uniformity.
Surface modifier in automotive clearcoats for enhanced dirt repellency and cleanability.
| Chemical Type | Organomodified silicone flake resin |
| Product Form | Free-flowing white to off-white flakes |
| Appearance | Flake solid, non-dusting, free of visible impurities |
| Primary Applications | Coatings, inks, composites, powder coatings |
| Key Features | Thermal stability, low surface energy, solvent-free, dispersible |
| Benefits | Enhanced surface protection, improved processability, reduced coefficient of friction |
| Storage Conditions | Store in original sealed container at 15–30 °C; protect from moisture |
| Shelf Life | 24 months from date of manufacture under recommended storage |
Q1: What is the primary function of DOWSIL RSN-0249 in coating and ink formulations?
A: DOWSIL RSN-0249 is a silicone flake resin designed to enhance surface slip, improve scratch resistance, and reduce coefficient of friction in high-performance coatings, inks, and overprint varnishes—particularly where tactile feel and mar resistance are critical.
Q2: How is DOWSIL RSN-0249 typically incorporated into formulations?
A: It is generally added during the let-down or post-addition stage, dispersed using high-shear mixing. Due to its flake morphology, it requires adequate dispersion energy to achieve uniform distribution without damaging flake integrity—avoid prolonged high-speed milling or ultrasonication.
Q3: Is DOWSIL RSN-0249 compatible with water-based systems?
A: Yes, it is formulated for compatibility with both solvent-borne and water-based systems, including acrylic and polyurethane dispersions. Performance in aqueous media may require optimization of pH, surfactant package, and shear conditions to ensure stable dispersion and avoid agglomeration.
Q4: Does DOWSIL RSN-0249 affect gloss or transparency in clear coatings?
A: When properly dispersed at typical use levels, it maintains high clarity and has minimal impact on gloss—making it suitable for clear topcoats and decorative finishes where optical performance must be preserved.
Q5: What storage conditions are recommended for optimal shelf life?
A: Store in original sealed containers at temperatures between 5 °C and 30 °C, away from direct sunlight and moisture. Prolonged exposure to freezing or excessive heat may affect dispersion stability upon reconstitution.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
