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Free-flowing, non-dusting powder form for easy handling and dispersion in dry-blend processes.
Highly crosslinked silicone elastomer with excellent thermal stability and compression set resistance.
Compatible with thermoplastics, thermosets, and elastomers—enabling seamless integration into compound formulations.
Delivers soft-touch feel, improved slip, and reduced surface friction without compromising mechanical integrity.
Non-reactive and inert under standard processing conditions—no curing agents or additional catalysts required.
Tactile enhancement for automotive interior components (e.g., dashboards, door panels, and control surfaces).
Surface modification of medical device housings and wearable sensors to improve grip and skin comfort.
Functional additive in engineering plastics for consumer electronics enclosures and wearable accessories.
Performance booster in specialty coatings and powder coatings for scratch resistance and matte finish control.
Processing aid in rubber compounding to reduce die swell and improve extrusion uniformity.
| Chemical Type | Highly Crosslinked Polydimethylsiloxane (PDMS) Elastomer |
| Product Form | Free-Flowing Dry Powder |
| Appearance | White to Off-White Granular Powder |
| Primary Applications | Tactile Enhancement, Surface Modification, Processing Aid |
| Key Features | Thermally Stable, Non-Dusting, Dispersible in Polymers |
| Benefits | Improved Slip, Soft-Touch Feel, Low Compression Set |
| Storage Conditions | Store in Original Container at 15–25°C; Protect from Moisture |
| Regulatory Status | Compliant with FDA 21 CFR §177.2600 (for indirect food contact) |
Q1: What is the primary function of DOWSIL EP-5518 in formulations?
A: DOWSIL EP-5518 is a free-flowing, non-oily powder silicone elastomer designed to provide soft-touch feel, improved slip, and surface lubricity in solid and semi-solid personal care and cosmetic products—such as powders, pressed compacts, and anhydrous sticks—without compromising structural integrity or powder flow.
Q2: How is DOWSIL EP-5518 typically incorporated into manufacturing processes?
A: It is readily dispersible in both aqueous and anhydrous systems and is commonly added during dry blending or post-mix stages. Its free-flowing nature supports uniform distribution without requiring high-shear mixing or pre-dispersion, making it suitable for standard powder processing equipment.
Q3: Is DOWSIL EP-5518 compatible with common cosmetic actives and pigments?
A: Yes, it demonstrates broad compatibility with typical cosmetic ingredients—including metal oxides, organic pigments, emollients, and film-formers—due to its inert, crosslinked polydimethylsiloxane structure and low surface energy. Compatibility testing under intended formulation conditions is still recommended.
Q4: Does DOWSIL EP-5518 require special storage or handling precautions?
A: Store in a cool, dry place in original sealed packaging to prevent moisture absorption and maintain flowability. No special ventilation or PPE beyond standard industrial hygiene practices is required, as it is non-dusting under normal handling conditions and exhibits low volatility.
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