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Highly stable anionic silicone emulsion with excellent shelf life under standard storage conditions.
Delivers superior softness, smoothness, and hydrophobicity to treated substrates.
Compatible with common textile auxiliaries including cationic, nonionic, and amphoteric agents.
Low foaming profile suitable for continuous pad-batch and exhaust dyeing processes.
Enables durable wash-fast performance without requiring post-curing or high-temperature fixation.
Softening and hydrophobization of cotton, polyester, and blended woven fabrics.
Finishing agent for nonwovens used in hygiene and medical applications.
Surface modifier for paper coatings to enhance water resistance and printability.
Component in leather finishing systems for improved grain flexibility and moisture repellency.
| Chemical Type | Dimethicone-based anionic silicone emulsion |
| Product Form | Aqueous 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 (Brookfield RVT, spindle #3, 20 rpm, 25°C) | 200 – 600 cP |
| Freeze-Thaw Stability | Passes 3 cycles (-10°C/24 h → 25°C/24 h) |
Q1: What is the primary function of MEM-7137 in coating and ink formulations?
A: MEM-7137 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 applications. It helps reduce surface defects such as craters, orange peel, and pinholes while enhancing gloss uniformity and substrate adhesion.
Q2: Is MEM-7137 compatible with common water-based polymer systems?
A: Yes, MEM-7137 exhibits broad compatibility with acrylics, styrene-acrylics, vinyl acetate copolymers, and polyurethane dispersions. Its stable emulsion profile minimizes the risk of coagulation or viscosity instability when added during let-down or post-addition stages.
Q3: How should MEM-7137 be incorporated into a formulation for optimal performance?
A: MEM-7137 is typically added during the final stage of formulation—after pigment grinding and during let-down—to preserve its surface-active functionality. Gentle mixing at low shear is recommended to avoid destabilizing the emulsion. Dosage depends on formulation requirements but generally ranges from 0.1% to 2% by weight of total formulation.
Q4: Does MEM-7137 contribute to long-term storage stability of finished products?
A: When properly incorporated, MEM-7137 supports formulation stability under typical ambient storage conditions. It is formulated to resist phase separation and maintain emulsion integrity over time, though compatibility testing under intended shelf-life and temperature conditions is recommended for each specific system.
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E-mail: wangxingqiang@ericwchem.com
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