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High-performance anionic dispersant based on sodium naphthalene formaldehyde condensate (NFC).
Excellent colloidal stabilization for inorganic pigments and fillers in aqueous systems.
Low foaming profile suitable for high-shear industrial processing and spray applications.
Good compatibility with a broad range of water-based resins, including acrylics, vinyl acetates, and styrene-butadiene.
Enhances grind efficiency and improves storage stability of pigment concentrates and architectural coatings.
Architectural and decorative waterborne paints and coatings.
Pigment dispersions and colorants for industrial coatings.
Cementitious systems including tile adhesives and self-leveling underlayments.
Water-based printing inks and functional coatings.
Agrochemical suspension concentrates (SC) requiring long-term physical stability.
| Chemical Type | Sodium naphthalene formaldehyde condensate (NFC) |
| Product Form | Aqueous solution (~45% active content) |
| Appearance | Brownish viscous liquid |
| pH (1% aqueous solution) | 7.5 – 9.5 |
| Density (20 °C) | 1.20 – 1.25 g/cm³ |
| Solubility | Completely miscible with water |
| Primary Applications | Dispersant and stabilizer for inorganic pigments and fillers |
| Key Features | Low foam, high electrolyte tolerance, shear-stable dispersion |
Q1: What is the primary function of Tamol NN 4501 in industrial formulations?
A: Tamol NN 4501 is a sodium naphthalene formaldehyde condensate surfactant designed primarily as a dispersing agent and rheology modifier. It helps stabilize pigment and filler suspensions in aqueous systems by providing electrostatic repulsion and steric hindrance, thereby improving storage stability and reducing viscosity buildup.
Q2: In which types of applications is Tamol NN 4501 most commonly used?
A: It is widely employed in water-based industrial coatings, construction mortars and grouts, ceramic tile adhesives, and pigment concentrates. Its performance is especially valued in high-solids, low-VOC systems where efficient particle dispersion and controlled flow behavior are critical.
Q3: Is Tamol NN 4501 compatible with other common additives such as defoamers or thickeners?
A: Yes, Tamol NN 4501 generally exhibits good compatibility with non-ionic thickeners (e.g., HEC, HASE), associative thickeners, and silicone- or mineral oil–based defoamers. However, compatibility should always be verified experimentally in the final formulation due to potential interactions with cationic species or highly hydrophobic components.
Q4: How should Tamol NN 4501 be incorporated into a formulation for optimal performance?
A: It is typically added during the grinding or let-down stage—either directly to the mill base or early in the aqueous phase—to ensure effective wetting and dispersion of solids. Pre-dilution with water may improve handling, and dosage generally ranges from 0.1% to 2% by weight relative to the total solids content, depending on pigment type, loading, and desired rheological profile.
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