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Platinum-based catalyst enabling rapid, room-temperature vulcanization of silicone elastomers.
Low dosage requirement — typically 0.1–0.5 wt% relative to base polymer — for efficient crosslinking.
Excellent compatibility with Dow SILASTIC RTV-3000 series silicone bases and other addition-cure silicones.
Provides superior control over pot life and cure profile without premature inhibition or side reactions.
Free from tin, lead, or other toxic heavy metals — compliant with RoHS and REACH requirements.
Electronics encapsulation and potting for sensors, PCBs, and power modules.
Medical device assembly requiring biocompatibility and low-extractables formulations.
Automotive under-hood gasketing and sealing where thermal stability and vibration resistance are critical.
Optical bonding and LED lens molding due to high transparency and minimal yellowing after cure.
Industrial prototyping and rapid tooling using soft silicone molds.
| Chemical Type | Platinum complex (divinyltetramethyldisiloxane platinum(0) catalyst) |
| Product Form | Liquid solution in vinyl-terminated silicone fluid |
| Appearance | Clear, colorless to pale yellow liquid |
| Primary Applications | Addition-cure silicone elastomer systems (RTV-2, LSR, HCR) |
| Key Features | Fast room-temperature cure, low volatility, non-corrosive, no by-products |
| Benefits | Improved process efficiency, consistent mechanical properties, excellent adhesion to substrates |
| Storage Conditions | Store at 2–8°C in original sealed container; protect from light and moisture |
| Shelf Life | 12 months from date of manufacture when stored properly |
Q1: What is the primary function of Dow SILASTIC RTV-3000 F Catalyst in silicone formulations?
A: Dow SILASTIC RTV-3000 F Catalyst is a platinum-based curing agent designed to accelerate the hydrosilylation reaction in addition-cure liquid silicone rubber (LSR) systems. It enables rapid, low-temperature vulcanization with excellent control over pot life and cure profile.
Q2: How should this catalyst be handled and stored to maintain activity?
A: Store in original sealed containers under inert atmosphere (e.g., nitrogen), at temperatures between 2°C and 8°C. Avoid exposure to moisture, air, sulfur-containing compounds, phosphines, amines, or heavy metals, which may cause premature deactivation or inhibition.
Q3: Is Dow SILASTIC RTV-3000 F Catalyst compatible with standard LSR base polymers and fillers?
A: Yes — it is formulated for compatibility with typical vinyl-terminated polydimethylsiloxane (PDMS) base polymers and common reinforcing fillers such as fumed silica. However, compatibility testing is recommended when used with specialty additives or high-loading functional fillers.
Q4: What are key processing considerations during mixing and molding?
A: Due to its high catalytic activity, precise metering and homogeneous dispersion are critical. Avoid excessive shear or prolonged mixing above ambient temperature prior to molding, as this may reduce working time. Injection molding parameters should be optimized to balance flow, fill, and full crosslink development without post-cure.
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