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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 auxiliaries including cationic, nonionic, and anionic systems in formulation.
Low foaming profile suitable for high-speed industrial coating and padding applications.
Complies with REACH and meets Oeko-Tex Standard 100 Class I requirements for infant products.
Softening and water-repellent finishing of cotton, polyester, and blended woven fabrics.
Hydrophobic treatment for spunbond and meltblown nonwovens used in medical gowns and masks.
Surface modification of paper and board to enhance ink holdout and dimensional stability.
Functional additive in leather retanning and topcoating formulations for improved grain flexibility.
| 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 (wt%) | 30 ± 1% |
| Density (25°C) | 0.98 – 1.02 g/cm³ |
| Viscosity (25°C, Brookfield LVT, Spindle #3, 6 rpm) | 150 – 400 mPa·s |
| Particle Size (D50) | 0.15 – 0.30 µm |
Q1: What is the primary function of MEM-0939 in coating and ink formulations?
A: MEM-0939 is a non-ionic, anionic-stabilized 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 enhancing gloss uniformity and substrate adhesion.
Q2: Is MEM-0939 compatible with common water-based polymer systems?
A: Yes, MEM-0939 exhibits good compatibility with acrylics, vinyl acetate copolymers, styrene-acrylics, and polyurethane dispersions. Compatibility should be verified under actual formulation conditions, especially when high electrolyte content or low pH is present.
Q3: How should MEM-0939 be incorporated into a formulation?
A: It is recommended to add MEM-0939 during the let-down or post-addition stage, after the main binder and pigments have been dispersed. Stirring at moderate speed ensures homogeneous distribution without excessive shear, which could destabilize the emulsion.
Q4: Does MEM-0939 require special storage or handling conditions?
A: Store in original sealed containers at temperatures between 5 °C and 35 °C. Avoid freezing and prolonged exposure to direct sunlight or high humidity. Once opened, minimize air exposure and use within recommended shelf life under controlled conditions.
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E-mail: wangxingqiang@ericwchem.com
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