High-performance polyacrylate-based associative thickener with excellent rheology control.
Delivers outstanding viscosity stability across a broad pH range (pH 3–12).
Provides superior shear-thinning behavior and improved sag resistance in coatings and construction mortars.
Enables low-foaming performance, ideal for high-shear industrial processes.
Offers good compatibility with common anionic, nonionic, and zwitterionic surfactants and co-binders.
Architectural waterborne paints and interior/exterior wall coatings.
Cementitious tile adhesives and self-leveling underlayments.
Exterior insulation finishing systems (EIFS) base and finish coats.
Water-based grouts and repair mortars.
Industrial maintenance coatings requiring robust rheology and open-time control.
| Chemical Type | Polyacrylic acid derivative (associative thickener) |
| Product Form | Aqueous solution (~20% active content) |
| Appearance | Clear to slightly opalescent, low-viscosity liquid |
| pH (1% aqueous solution) | 3.5 – 4.5 |
| Density (20 °C) | ~1.02 – 1.04 g/cm³ |
| Solubility | Completely miscible with water; compatible with common glycols and co-solvents |
| Storage Stability | Stable for ≥12 months at 5–30 °C in sealed container |
| Primary Function | Rheology modifier / associative thickener |
Q1: What is the primary function of Sokalan PA 20 in formulations?
A: Sokalan PA 20 is a polyacrylic acid-based polyelectrolyte surfactant designed primarily to provide dispersion stabilization, viscosity control, and rheology modification—especially in aqueous systems containing pigments, fillers, or inorganic particles.
Q2: Is Sokalan PA 20 compatible with common industrial biocides and preservatives?
A: Yes, Sokalan PA 20 generally exhibits good compatibility with widely used isothiazolinone- and benzisothiazole-based biocides, though performance may vary depending on pH, ionic strength, and co-formulants—compatibility testing under actual formulation conditions is recommended.
Q3: How does pH affect the performance of Sokalan PA 20?
A: Sokalan PA 20 is anionic and shows optimal dispersion and thickening performance in neutral to alkaline conditions (pH ≥ 7). Its effectiveness diminishes significantly below pH 5 due to protonation and reduced charge density.
Q4: Can Sokalan PA 20 be used in low-VOC or waterborne coating systems?
A: Yes, it is well-suited for low-VOC and waterborne architectural, industrial, and functional coatings where stable pigment dispersion and controlled rheology are required without compromising film formation or clarity.
Q5: What is the typical dosage range for Sokalan PA 20 in standard applications?
A: Dosage depends on formulation requirements, but it is typically used at low concentrations—generally ranging from 0.1% to 2% by weight relative to the total formulation—to achieve effective stabilization and rheological control.
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