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High-efficiency associative thickener based on hydrophobically modified polyacrylate chemistry.
Delivers excellent rheology control and viscosity build in low-surfactant and high-electrolyte systems.
Provides outstanding sag resistance and leveling balance in waterborne coatings and construction formulations.
Compatible with a broad range of anionic, nonionic, and amphoteric surfactants.
Enables low-VOC and APEO-free formulation design without compromising performance.
Architectural interior and exterior latex paints.
Waterborne industrial maintenance coatings.
Cementitious tile adhesives and grouts.
Exterior insulation finishing systems (EIFS) basecoats and topcoats.
Water-based wood stains and clear finishes.
| Chemical Type | Hydrophobically Modified Polyacrylate (HMPA) |
| Product Form | Aqueous dispersion |
| Appearance | Opaque white to off-white liquid |
| pH (1% aqueous solution) | 3.5 – 4.5 |
| Solids Content | 30.0 ± 1.0 wt% |
| Viscosity (Brookfield LVT, Spindle #1, 6 rpm, 25°C) | 500 – 2,500 mPa·s |
| Free Monomer (Acrylic Acid) | < 100 ppm |
| Primary Applications | Rheology modifier for waterborne architectural and construction coatings |
Q1: What type of rheology does Sipomer HPM 300 provide in aqueous systems?
A: Sipomer HPM 300 is an associative thickener that delivers pseudoplastic (shear-thinning) rheology, offering good viscosity build at low shear and improved flow and leveling at high shear — ideal for sprayable and brushable formulations.
Q2: Is Sipomer HPM 300 compatible with common surfactants and co-solvents used in industrial cleaners and architectural coatings?
A: Yes — it exhibits broad compatibility with nonionic, anionic, and amphoteric surfactants, as well as typical co-solvents like glycol ethers and short-chain alcohols. Performance may vary depending on ionic strength and pH, so pre-testing in the final formulation is recommended.
Q3: How should Sipomer HPM 300 be incorporated into a water-based formulation?
A: It is typically added during the post-addition stage, after primary emulsification and pH adjustment. Pre-dilution with water or a compatible solvent helps ensure uniform dispersion. Avoid high-shear addition directly to highly viscous phases to prevent localized gelation.
Q4: Does Sipomer HPM 300 offer stability under freeze-thaw conditions?
A: Formulations thickened with Sipomer HPM 300 generally demonstrate good resistance to moderate freeze-thaw cycling, though long-term or repeated exposure may affect viscosity recovery. Stabilizer packages or co-thickeners are often used in demanding applications to enhance robustness.
Q5: Can Sipomer HPM 300 be used in low-VOC or zero-VOC formulations?
A: Yes — it is supplied as a water-based dispersion containing no added organic solvents or APEOs, supporting compliance with low-VOC regulatory frameworks and sustainability goals when formulated accordingly.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
