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Non-ionic, associative polyurethane (HEUR) thickener delivering high-shear viscosity control and excellent flow/leveling balance.
Compatible with anionic and non-ionic surfactants, enabling broad formulation flexibility in water-based systems.
Provides outstanding sag resistance and anti-drip performance in vertical applications without compromising brushability.
Stable across pH range 4–12 and tolerant to moderate levels of electrolytes and co-solvents.
Low VOC and APEO-free, supporting compliance with global environmental and regulatory standards.
Architectural interior and exterior latex paints.
Water-based wood coatings and stains.
Industrial maintenance coatings for metal and concrete substrates.
Decorative wall coatings and textured finishes.
Water-based adhesives and sealants requiring rheology control.
| Chemical Type | Hydrophobically modified ethoxylated urethane (HEUR) |
| Product Form | Clear to slightly hazy aqueous solution |
| Appearance | Colorless to pale yellow liquid |
| pH (1% aqueous solution) | 6.5–8.5 |
| Active Content (wt%) | 25–27% |
| Density (25°C, g/cm³) | 1.02–1.06 |
| Viscosity (25°C, mPa·s) | 500–2,000 |
| Primary Applications | Rheology modifier for waterborne coatings and adhesives |
Q1: What types of systems is SN-THICKENER 621TF most commonly used in?
A: SN-THICKENER 621TF is primarily formulated for use in water-based industrial coatings, architectural paints, and certain agrochemical suspension concentrates where stable, shear-thinning rheology and good sag resistance are required.
Q2: How does SN-THICKENER 621TF differ from traditional associative thickeners?
A: Unlike many conventional HASE or HEUR thickeners, SN-THICKENER 621TF offers enhanced compatibility with high-electrolyte formulations and demonstrates improved tolerance to pH fluctuations, supporting consistent viscosity performance across a broader range of formulation conditions.
Q3: What is the recommended addition method for optimal performance?
A: For best results, SN-THICKENER 621TF should be added during the let-down stage under moderate agitation. Pre-dilution with water or compatible solvent is advised to ensure uniform dispersion and avoid localized overdosing.
Q4: Is SN-THICKENER 621TF compatible with biocides and other common additives?
A: Yes, SN-THICKENER 621TF has demonstrated broad compatibility with standard isothiazolinone and formaldehyde-releasing biocides, as well as common defoamers, dispersants, and co-solvents—though compatibility testing in the final formulation is always recommended.
Q5: Does SN-THICKENER 621TF require pH adjustment for activation?
A: SN-THICKENER 621TF functions effectively without strict pH dependency and delivers reliable thickening performance across typical formulation pH ranges (approximately 7–10), though optimal results are generally observed in mildly alkaline conditions.
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