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Non-ionic, stable silicone emulsion designed for compatibility with a broad range of water-based systems.
Provides excellent lubricity and surface slip without compromising adhesion in coating or adhesive formulations.
Offers low foam generation and good shear stability during high-speed mixing and pumping operations.
Enables efficient migration to the air–interface, enhancing surface enrichment and soft-touch feel.
Compatible with common preservatives and exhibits good freeze-thaw stability under standard storage conditions.
Textile finishing agents for durable softness and wrinkle resistance.
Water-based architectural coatings to improve leveling, mar resistance, and substrate wetting.
Personal care formulations including shampoos and conditioners for sensory enhancement and detangling.
Printing ink additives to reduce surface tension and improve rub resistance.
Leather finishing systems for improved grain clarity and suppleness.
| Chemical Type | Dimethyl silicone polymer emulsion |
| Product Form | Liquid emulsion |
| Appearance | Opaque white to off-white liquid |
| pH (1% aqueous solution) | 6.0 – 7.5 |
| Solids Content (wt%) | 30.0 ± 1.0 |
| Viscosity (mPa·s, Brookfield RV, #2 spindle, 20 rpm, 25°C) | 100 – 300 |
| Density (g/cm³, 25°C) | 0.98 – 1.02 |
| Recommended Storage Temperature | 5 – 40°C |
Q1: What is the primary function of DOWSIL IE-6687 in coating and ink formulations?
A: DOWSIL IE-6687 is a non-ionic silicone emulsion designed to provide surface leveling, substrate wetting, and foam control in water-based coatings, inks, and graphic arts systems. It helps reduce surface defects such as craters, orange peel, and pinholes while improving gloss uniformity and substrate adhesion.
Q2: Is DOWSIL IE-6687 compatible with common water-based polymer systems?
A: Yes, it demonstrates good compatibility with acrylics, styrene-acrylics, vinyl acetate copolymers, and polyurethane dispersions. Compatibility should be verified in the final formulation due to sensitivity to pH, electrolytes, and other additives.
Q3: How should DOWSIL IE-6687 be incorporated into a formulation?
A: It is typically added during the let-down stage under low-shear conditions to avoid destabilizing the emulsion. Pre-dilution with water or formulation water phase is recommended for optimal dispersion. Avoid high-shear mixing or addition directly into highly ionic or low-pH environments without prior testing.
Q4: Does DOWSIL IE-6687 affect the drying time or film formation of water-based systems?
A: It generally has minimal impact on drying kinetics or film formation when used at typical dosage levels. However, excessive addition may slightly delay water evaporation or influence coalescence behavior—therefore, dosage should be optimized per application requirements.
Q5: Can DOWSIL IE-6687 be used in food-contact compliant coatings?
A: DOWSIL IE-6687 is not pre-approved for direct food-contact applications. Its use in food-contact coatings requires full regulatory evaluation by the formulator—including compliance with applicable regional regulations and migration assessments—as part of the final finished product dossier.
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