ASTRA REO®
Rheology Modifiers
Rheology additives for precise viscosity tuning in solvent-borne, waterborne, and solvent-free systems. Prevent sedimentation, separation, ensure controlled flow and sag resistance.
Why do we use rheology modifiers?
Rheology modifiers fine-tune the viscosity profile of coatings, inks and adhesives. They prevent sedimentation, separation and sagging while ensuring controlled flow during application. The right rheology enables thicker, more uniform films that resist running on vertical surfaces.
Key Benefits
- Sag Resistance — prevents drips on vertical surfaces
- Anti-Settling — keeps pigments and fillers suspended
- Thixotropic Behavior — flow when applied, set when at rest
- Wide pH Tolerance — works in alkaline and acidic systems
- Compatible with Solvent, Water, UV systems
- Improved Storage Stability
Impact on Coating Performance
Proper rheology control transforms formulations into reliable, easy-to-apply products. ASTRA REO additives reduce waste, improve application speed and produce consistent film thickness across complex geometries.
O – organosoluble, WB – water-based, UV – radiation-curable
Product Catalog
Download TDS| Active % | Feature | TDS | Samples | |||
|---|---|---|---|---|---|---|
| ASTRA REO-10010 | RM-8W | Water-based | 20% | Prevents settling of fillers and pigments and prevents runoff of aqueous systems. Works in a wide pH range. Pseudoplastic rheology. | ||
| ASTRA REO-3010 | BYK-420 | Water-based | 50% | Prevents settling of fillers and pigments and prevents runoff of aqueous systems. Easily dispersed, has a strong effect on rheology. Thixotropic rheology. | ||
| ASTRA REO-7010 | RM SCT-275 | Water-based | 18% | Prevents settling of fillers and pigments and prevents runoff of water systems. Works in a wide pH range. Agglomerative thickening, provides leveling. For primers and varnishes. |
Articles about ASTRA REO®
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Coating Chemists: 4-Step Lab Diagnosis for Flooding and Floating ! Coating defect diagnosis title card illustration Flooding is a uniform surface color shift caused by vertical pigment migration during film formation, while floating produces streaks or mottled patches from horizontal pigment separat…
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What Causes Color Strength Loss in Coatings and Inks
What Causes Color Strength Loss in Coatings and Inks ! Decorative title card illustration for chemical coatings article Color strength loss is the measurable reduction in a pigment's tinting power, whether the culprit is poor dispersion, flocculation, a shift in pigment crystal phase, or damage from…
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