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High-solids, anionic silicone gum blend emulsion offering excellent film-forming capability.
Provides outstanding lubricity, softness, and hydrophobicity on treated substrates.
Compatible with cationic, nonionic, and some anionic systems—ideal for formulation flexibility.
Stable across a broad pH range (pH 4–8) and tolerant to moderate electrolyte levels.
Enables low-temperature curing and good adhesion on cellulosic, synthetic, and mineral surfaces.
Textile finishing for durable soft hand feel and wrinkle resistance.
Nonwoven binders and coatings to enhance drape, water repellency, and abrasion resistance.
Leather finishing agents delivering smoothness, suppleness, and improved grain definition.
Construction additives for hydrophobic treatment of mortars, grouts, and cementitious coatings.
Specialty paper coatings to improve release properties and surface smoothness.
| Chemical Type | Dimethyl/diphenyl silicone gum blend |
| Product Form | Aqueous anionic emulsion |
| Appearance | Opaque white to off-white liquid |
| Solids Content | 45–47 wt% |
| pH (10% aqueous solution) | 5.5–6.5 |
| Viscosity (Brookfield, #3 spindle, 20 rpm, 25°C) | 500–2,000 cP |
| Density (25°C) | 0.98–1.02 g/cm³ |
| Freeze-Thaw Stability | Passes 3 cycles (−10°C/24 h → 25°C/24 h) |
Q1: What is the primary function of DOWSIL 7-3100 in formulations?
A: DOWSIL 7-3100 is a silicone gum blend emulsion designed to provide controlled rheology modification, surface conditioning, and film-forming properties—particularly in water-based coatings, personal care products, and industrial maintenance formulations.
Q2: Is DOWSIL 7-3100 compatible with common water-based systems?
A: Yes, it is formulated for compatibility with a broad range of water-based systems including acrylics, polyurethanes, and natural polymer dispersions. Compatibility should be verified under actual formulation conditions due to sensitivity to pH, electrolytes, and surfactant interactions.
Q3: How should DOWSIL 7-3100 be incorporated into a formulation?
A: It is typically added during the let-down or post-addition stage under moderate agitation. Avoid high-shear mixing at elevated temperatures to preserve emulsion stability and gum integrity. Pre-dilution with water may improve dispersion uniformity.
Q4: Does DOWSIL 7-3100 require curing or thermal activation to develop its functional properties?
A: No thermal cure is required—the silicone gum network develops functionality through coalescence and interfacial reorganization upon water evaporation. Performance is optimized when films are allowed to air-dry under ambient or mild forced-air conditions.
Q5: Can DOWSIL 7-3100 be used in applications requiring regulatory compliance for indirect food contact?
A: While the product is based on FDA-compliant silicone polymers, final regulatory acceptance depends on the complete formulation, processing conditions, and intended use. Users must conduct their own evaluation and obtain appropriate regulatory verification for specific end-use applications.
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