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Non-ionic, hydrophobically modified polyurethane (HMPE) rheology modifier for waterborne systems.
Delivers excellent low-shear viscosity build and outstanding sag resistance in architectural and industrial coatings.
Provides superior compatibility with acrylic, vinyl acetate, and styrene-acrylic dispersions without compromising gloss or clarity.
Enables efficient viscosity adjustment with minimal dosage—typically 0.2–0.8 wt% on total formulation basis.
Stable across broad pH range (pH 4–10) and compatible with common co-thickeners and surfactants.
Interior and exterior architectural wall paints (matte to semi-gloss).
Waterborne industrial maintenance coatings for metal and concrete substrates.
Textured decorative coatings and plaster-based finishes.
Water-based wood stains and clear varnishes requiring flow/leveling control.
High-solid, low-VOC coating formulations targeting regulatory compliance.
| Chemical Type | Hydrophobically Modified Polyurethane (HMPE) |
| Product Form | Aqueous dispersion |
| Appearance | Opaque white to off-white liquid |
| pH (1% aqueous solution) | 7.0–8.5 |
| Active Content (wt%) | 30.0 ± 1.0 |
| Viscosity (mPa·s, Brookfield RVT, spindle #3, 20 rpm, 25°C) | 1,500–4,000 |
| Freeze-Thaw Stability | Passes 3 cycles (−15°C / 23°C) |
| Primary Applications | Waterborne architectural and industrial coatings |
Q1: What type of rheology does Rheovis PU1190 DSX3290 provide in waterborne systems?
A: Rheovis PU1190 DSX3290 is a hydrophobically modified polyurethane (HEUR) thickener that delivers strong associative thickening, providing excellent mid-shear viscosity build and good flow/leveling balance. It imparts pseudoplastic behavior with pronounced shear-thinning characteristics, supporting both application performance and post-application film formation.
Q2: Is this thickener compatible with high-solids or low-VOC architectural coatings?
A: Yes — Rheovis PU1190 DSX3290 is specifically designed for modern waterborne formulations, including high-solids architectural paints and low-VOC industrial coatings. Its associative mechanism remains effective in reduced-water and co-solvent-containing systems, supporting viscosity stability without compromising environmental compliance targets.
Q3: How should Rheovis PU1190 DSX3290 be incorporated into a formulation?
A: It is typically added during the let-down stage, after pigments and fillers are dispersed and primary thickeners (e.g., cellulose or acrylic) have been incorporated. To ensure optimal performance, dilute the product with water or a suitable co-solvent before addition, and allow sufficient mixing time for full associative network development. Avoid high-shear addition directly to undiluted concentrate.
Q4: Does Rheovis PU1190 DSX3290 offer resistance to microbial degradation?
A: As a synthetic polyurethane-based polymer, it does not contain nutrient-rich backbones susceptible to enzymatic breakdown. While not a biocide, its inherent chemical structure contributes to long-term rheological stability in preserved systems — however, appropriate preservation remains essential for overall formulation integrity.
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