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Dow DOWSIL BY 16-849 Fluid is a premium silicone fluid in DOWSIL industrial functional silicone series, optimized for industrial processing and coating systems. With excellent surface activity, lubricity and system compatibility, it efficiently improves formula processability, substrate wettability and end-product surface performance
Excellent Surface Activity - Reduces system surface tension, improves substrate wetting and spreading effect
Outstanding Lubrication Performance - Reduces processing friction, enhances product smoothness and wear resistance
Wide System Compatibility - Suitable for water-based and solvent-based formulas, no delamination or precipitation
Convenient & Efficient Processing - Good fluidity and easy addition, compatible with various industrial and coating production processes
Stable & Durable Performance - Strong temperature and weather resistance, no performance attenuation in long-term use
Coating System Additive - Industrial coatings and decorative coatings, improving leveling and surface smoothness
Industrial Lubrication Processing - Mechanical parts and rubber & plastic products, enhancing lubrication and wear resistance
Surface Treatment Modification - Surface treatment of various substrates, optimizing wetting and protection effect
Rubber & Plastic Material Modification - Rubber and plastic formulas, improving processing fluidity and surface texture
Polyurethane System - Polyurethane foaming and elastomer systems, improving molding and surface performance
| Brand | DOW |
| Product Type | Industrial Functional Silicone Fluid |
| Active Ingredient | 100% (Typical) |
| Appearance | Colorless Transparent Liquid (Typical) |
| Dynamic Viscosity (25℃) | 2500~4500 cP (Typical) |
| Surface Tension (25℃) | 21~24 mN/m (Typical) |
| Specific Gravity (25℃) | 0.99~1.02 (Typical) |
| Temperature Resistance Range | -45℃ ~ 170℃ (Typical) |
| Refractive Index (25℃) | 1.390~1.395 (Typical) |
Q1: What is the primary function of DOWSIL BY 16-849 Silicone Oil in formulations?
A: DOWSIL BY 16-849 is a reactive silicone fluid designed primarily as a surface modifier and compatibility enhancer—especially in thermoplastic and thermoset systems where improved substrate wetting, reduced surface tension, or controlled migration is required.
Q2: Is DOWSIL BY 16-849 suitable for use in high-temperature processing environments?
A: Yes—this silicone oil exhibits thermal stability consistent with typical polydimethylsiloxane-based materials and is formulated to withstand common melt-processing and curing temperatures encountered in polymer compounding and coating applications.
Q3: How does DOWSIL BY 16-849 differ from non-reactive silicone oils?
A: Unlike standard dimethicone fluids, BY 16-849 contains reactive silane functionality that enables covalent bonding or strong interfacial interaction with substrates such as silica, metals, or polar polymers—enhancing permanence and reducing bloom or leaching risks.
Q4: Can DOWSIL BY 16-849 be used in food-contact or pharmaceutical-related applications?
A: While it is not pre-approved for direct food contact or pharmaceutical use, DOWSIL BY 16-849 may be considered for indirect applications—subject to full regulatory assessment by the formulator, including compatibility with intended end-use conditions and compliance with relevant local requirements.
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E-mail: wangxingqiang@ericwchem.com
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