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Two-part, platinum-cured silicone elastomer system offering excellent flowability and low viscosity for easy mixing and processing.
Provides outstanding thermal stability with continuous service temperature range from –55 °C to +200 °C.
Delivers high elongation (>400%) and excellent tear strength for durable, flexible cured parts.
Offers low compression set and superior resistance to aging, ozone, and UV exposure.
Meets biocompatibility requirements per ISO 10993-5 (cytotoxicity) and USP Class VI for select applications.
Medical device components including gaskets, seals, tubing connectors, and wearable sensor housings.
Automotive under-hood sealing systems requiring resilience across wide thermal cycles.
Consumer electronics encapsulation and protective overmolding for buttons, membranes, and interface pads.
Industrial fluid handling components such as diaphragms, pump valves, and precision seals.
Optical bonding and light-diffusing elements in LED lighting assemblies.
| Chemical Type | Platinum-cured addition-cure silicone elastomer |
| Product Form | Two-component liquid kit (Part A: base; Part B: catalyst) |
| Appearance (Uncured) | Part A: translucent, low-viscosity liquid; Part B: clear to pale yellow liquid |
| Mix Ratio (by weight) | 10:1 (A:B) |
| Cure Conditions (Typical) | 15–30 min at 150 °C or 2–4 h at 25 °C (with accelerator) |
| Hardness (Shore A, cured) | 30 ± 5 |
| Elongation at Break (cured) | ≥400% |
| Key Features | Low viscosity, rapid cure, high flexibility, biocompatible options available |
Q1: What is the primary function of the Dow Corning EG-3100 Silicone Elastomer Kit in formulations?
A: EG-3100 is a two-part addition-cure silicone elastomer system designed to provide soft, flexible, and durable elastomeric films or gels upon curing. It is commonly used to enhance surface feel, improve slip and abrasion resistance, and deliver controlled release or barrier functionality in personal care, industrial coatings, and specialty polymer applications.
Q2: How is the kit supplied, and what are the mixing requirements?
A: The EG-3100 Kit consists of two separately packaged components — a base elastomer (Part A) and a platinum-based catalyst (Part B) — supplied in pre-measured ratios for ease of use. Mixing is typically performed at room temperature with low-shear agitation; thorough but gentle blending is essential to ensure homogeneity without entrapping air. Cure time and profile depend on temperature, thickness, and formulation composition.
Q3: Is EG-3100 compatible with common cosmetic and industrial raw materials?
A: Yes, EG-3100 demonstrates broad compatibility with silicones, esters, hydrocarbons, and many water-free organic systems. However, it is sensitive to certain inhibitors — including sulfur-containing compounds, amines, and heavy metals — which may delay or suppress cure. Compatibility testing under actual processing conditions is recommended prior to full-scale implementation.
Q4: Can EG-3100 be used in rinse-off versus leave-on personal care products?
A: EG-3100 is formulated to remain stable and functional in both rinse-off and leave-on systems. Its cured elastomer network provides persistent sensory benefits and film integrity where desired, while uncured material remains dispersible in appropriate solvents or emulsions. Performance characteristics such as substantivity and wash resistance should be evaluated in final product form.
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