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Highly stable anionic silicone emulsion with excellent shelf life and freeze-thaw resistance.
Provides superior softness, smoothness, and hydrophobicity on textile and nonwoven substrates.
Compatible with common textile auxiliaries including anionic and nonionic agents.
Low foaming profile suitable for continuous pad-batch and exhaust dyeing processes.
Eco-preferred formulation with low APEO content and compliant with ZDHC MRSL v3.0.
Cotton and blended fabric softening in apparel and home textiles.
Nonwoven finishing for hygiene products including wipes and medical gowns.
Knit and woven fabric conditioning in pre- and post-treatment stages.
Enhancing drape and hand feel in technical textiles for automotive and filtration applications.
Surface modification of cellulose-based materials to improve water repellency and abrasion resistance.
| Chemical Type | Dimethyl silicone polymer emulsion (anionic) |
| Product Form | Liquid emulsion |
| Appearance | Opaque white to off-white liquid |
| pH (1% aqueous solution) | 5.5–6.5 |
| Active Content | 30 ± 1 wt% |
| Viscosity (25°C, Brookfield LVT, Spindle #3, 6 rpm) | 150–400 mPa·s |
| Droplet Size (D50) | 0.3–0.8 µm |
| Primary Applications | Textile softening, nonwoven finishing, hydrophobicity enhancement |
Q1: What is the primary function of MEM-8818 in coating and ink formulations?
A: MEM-8818 is a non-ionic, anionic-stabilized silicone emulsion designed to provide surface leveling, substrate wetting, and foam control in water-based coatings, inks, and adhesives. It helps reduce surface defects such as craters, orange peel, and pinholes while enhancing gloss uniformity and substrate coverage.
Q2: Is MEM-8818 compatible with common water-based polymer systems?
A: Yes, MEM-8818 demonstrates good compatibility with acrylics, styrene-acrylics, vinyl acetate copolymers, and polyurethane dispersions. It is formulated for stable incorporation without causing coagulation or viscosity instability when added during the let-down stage.
Q3: How should MEM-8818 be incorporated into a formulation?
A: MEM-8818 is typically added during the final stages of formulation—after pigments and thickeners—to avoid mechanical degradation or premature surface migration. It is recommended to dilute with water or formulation medium before addition and mix under moderate shear to ensure uniform dispersion.
Q4: Does MEM-8818 affect the drying time or film formation of coatings?
A: MEM-8818 has minimal impact on drying kinetics or film formation when used at typical dosage levels. Its low volatility and emulsified nature allow it to remain uniformly distributed until film coalescence, supporting consistent surface performance without delaying water evaporation or interfering with polymer particle fusion.
Q5: Can MEM-8818 be used in applications requiring FDA compliance for indirect food contact?
A: MEM-8818 is not pre-approved for direct or indirect food contact applications. While certain silicone components may be listed under FDA 21 CFR §175.300 or §176.170, specific regulatory status depends on full formulation evaluation and intended use conditions. Customers must conduct their own regulatory assessment and consult Dow technical support for documentation relevant to their application.
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E-mail: wangxingqiang@ericwchem.com
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