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Non-ionic, stable aqueous silicone emulsion with excellent shelf life.
Provides outstanding lubricity and surface slip on textiles, paper, and nonwovens.
Low foaming formulation suitable for high-speed industrial coating and finishing processes.
Compatible with common anionic and cationic additives, enabling flexible formulation integration.
Leaves no tacky residue and enhances soft hand feel without compromising breathability.
Textile softening and anti-static finish for woven and knitted fabrics.
Release agent for paper and film converting operations.
Surface treatment for nonwoven fabrics used in hygiene and medical products.
Lubricant additive in fiber processing and yarn sizing formulations.
Component in water-based coatings requiring enhanced slip and mar resistance.
| Chemical Type | Dimethyl silicone polymer emulsion |
| Product Form | Opaque white liquid |
| Appearance | Stable, milky-white emulsion |
| pH (1% Aqueous Solution) | 6.0 – 7.5 |
| Active Content (wt%) | 30 ± 1 |
| Density (25°C, g/cm³) | 0.98 – 1.02 |
| Viscosity (Brookfield, mPa·s, #2 spindle, 20 rpm) | 200 – 600 |
| Primary Applications | Textile finishing, paper release, nonwoven treatment |
Q1: What is the primary function of Dow Corning 501W in coating and ink formulations?
A: Dow Corning 501W is a non-ionic, water-based silicone emulsion designed to improve surface leveling, reduce surface tension, and enhance substrate wetting—particularly on low-energy surfaces—without significantly affecting gloss or intercoat adhesion.
Q2: Is Dow Corning 501W compatible with waterborne acrylics, polyurethanes, and epoxy dispersions?
A: Yes, it exhibits broad compatibility with common waterborne polymer systems, including acrylics, polyurethanes, and epoxy dispersions. However, stability should be verified in the final formulation under intended storage and processing conditions.
Q3: How should Dow Corning 501W be incorporated into a formulation?
A: It is typically added during the let-down stage, after main binders and pigments are dispersed. Gentle mixing is recommended to avoid excessive shear, which may destabilize the emulsion. Pre-dilution with water or co-solvent can aid uniform incorporation.
Q4: Does Dow Corning 501W contribute to foam generation or stabilization?
A: While it is not a defoamer, its surfactant nature may influence foam behavior. In most cases, it does not cause problematic foaming when used at typical dosage levels—but evaluation in the full system is advised, especially if high-shear mixing is involved.
Q5: Can Dow Corning 501W be used in applications requiring FDA compliance for indirect food contact?
A: Dow Corning 501W is not specifically marketed or certified for FDA-regulated food-contact applications. Customers intending such use must conduct their own regulatory assessment and validation based on end-use conditions and applicable jurisdictional requirements.
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E-mail: wangxingqiang@ericwchem.com
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