Features Of Coatex Rheotech 2800 Thickener
Balanced rheology - Balances high, medium and low shear viscosities, suitable for various construction scenarios
Anti-sagging & anti-floating - Prevents sagging and floating, ensuring uniform and stable film appearance
Splatter reduction - Increases medium-high shear viscosity, reduces roller splatter, improving construction efficiency
Eco-friendly compliance - Solvent-free, APEO-free and metal-free, meeting zero-VOC standards
Synergistic & economical - Compatible with various rheological additives, dosage 0.1%-1%, cost-effective
Typical Applications Of Coatex Rheotech 2800 Thickener
High-end matte coatings - Suitable for single-coat matte latex paints, improving film fullness and application feel
High-gloss/silk/semi-matte paints - Optimizes leveling and gloss display, reducing construction defects
Tinting base paints - Ensures viscosity stability during tinting, helping uniform color presentation
Water-based architectural coatings - Adapts to high-low PVC formulations, improving workability and stability
Zero-VOC eco-friendly coatings - Solvent-free formulation, meeting green production and application requirements
Specifications Of Coatex Rheotech 2800 Thickener
| Brand | Coatex (Arkema Group, France) |
| Chemical Type | Acrylic copolymer aqueous dispersion (HASE type) |
| Appearance (20℃) | Milky white low-viscosity liquid |
| Active Ingredient | 30% |
| pH Value (25℃) | 3 |
| Specific Gravity (20℃) | 1.06 g/cm³ |
| Applicable pH Range | >8 |
| Ionic Type | Anionic |
Coatex Rheotech 2800 Thickener – Frequently Asked Questions (FAQ)
Q1: What type of rheology modifier is Coatex Rheotech 2800?
A: Coatex Rheotech 2800 is a high-performance associative thickener based on hydrophobically modified ethoxylated urethane (HEUR) chemistry, designed to provide efficient viscosity building and excellent shear-thinning behavior in waterborne systems.
Q2: In which types of formulations is Rheotech 2800 most commonly used?
A: It is widely employed in architectural coatings (e.g., interior and exterior paints), industrial maintenance coatings, and certain water-based adhesives and sealants where balanced flow, sag resistance, and brush/roller application performance are critical.
Q3: How does Rheotech 2800 perform in the presence of electrolytes or hard water?
A: As a non-ionic HEUR thickener, Rheotech 2800 exhibits good tolerance to common electrolytes and moderate levels of water hardness, maintaining viscosity stability better than many ionic thickeners—though extreme ionic strength may still affect performance and should be evaluated in the final formulation.
Q4: Is Rheotech 2800 compatible with other rheology modifiers?
A: Yes, it can be effectively combined with cellulosic thickeners (e.g., HEC) or inorganic thickeners (e.g., bentonite) to fine-tune rheological profiles—however, compatibility testing is recommended to avoid antagonistic interactions or viscosity loss.
Q5: What is the typical dosage range for effective thickening?
A: Rheotech 2800 is typically used at low concentrations, generally ranging from 0.1% to 2% by weight of the total formulation, depending on the desired viscosity level, pigment volume concentration, and co-thickener strategy.
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