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High-performance addition-cure liquid silicone rubber (LSR) with excellent thermal stability.
Low viscosity for easy processing, including injection molding and dispensing into complex geometries.
Excellent mechanical properties after cure, including high tensile strength and elongation at break.
Good electrical insulation properties and UL 94 V-0 flammability rating (when compounded appropriately).
Biocompatibility support: meets USP Class VI and ISO 10993-5/10 testing requirements for medical-grade applications.
Medical devices requiring sterilization — including catheters, tubing, and wearable sensors.
Automotive components exposed to elevated temperatures — such as ignition system parts and sensor housings.
Consumer electronics encapsulation and gasketing — especially where vibration damping and sealing are critical.
Industrial fluid handling systems — including diaphragms, seals, and pump components compatible with aggressive media.
| Chemical Type | Platinum-catalyzed addition-cure liquid silicone rubber |
| Product Form | Two-part liquid system (Part A + Part B) |
| Appearance | Clear, low-viscosity liquid (Part A); colorless to pale yellow liquid (Part B) |
| Primary Applications | Medical device components, automotive sealing, electronics encapsulation |
| Key Features | Fast cure at elevated temperature, low compression set, excellent aging resistance |
| Benefits | Reduced cycle times in LSR molding, long-term reliability in demanding environments |
| Cure Temperature Range | 110–170 °C |
| Shelf Life (unopened, 25 °C) | 12 months from date of manufacture |
Q1: What is the primary function of DOWSIL BY 16-880 in coating and ink formulations?
A: DOWSIL BY 16-880 is a silicone-based additive designed to improve substrate wetting, reduce surface defects (e.g., craters and orange peel), and enhance leveling and slip performance in solventborne and high-solids coatings, as well as printing inks.
Q2: Is DOWSIL BY 16-880 compatible with common resin systems such as acrylics, polyurethanes, and alkyds?
A: Yes, it demonstrates broad compatibility with major binder chemistries including acrylics, polyurethanes, alkyds, and epoxy systems. However, compatibility should always be verified in the final formulation due to variations in solvent blends and additive interactions.
Q3: How should DOWSIL BY 16-880 be incorporated into a formulation?
A: It is typically added during the let-down or post-additive stage under moderate agitation. Pre-dilution in a compatible solvent or carrier may be recommended for optimal dispersion, especially in low-solvent or high-viscosity systems.
Q4: Does DOWSIL BY 16-880 affect recoatability or intercoat adhesion?
A: When used within the recommended dosage range, it generally does not impair intercoat adhesion. However, excessive addition may lead to surface migration and potential adhesion issues—formulators are advised to evaluate recoatability under intended cure and handling conditions.
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