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 | |||
|---|---|---|---|---|---|
| ASTRA REO-10010 | RM-8W | WB | 20% | Prevents settling of fillers and pigments and prevents runoff of aqueous systems. Works in a wide pH range. Pseudoplastic rheology. | |
| ASTRA REO-1010 | BYK-410 | O | 50% | Prevents sedimentation of fillers and pigments and prevents flow of organosoluble systems. Easily dispersed, has a strong effect on rheology. Thixotropic rheology. | |
| ASTRA REO-13010 | Hemings 105A | WB | 50% | Prevents settling of fillers and pigments and prevents runoff of water systems. Works in a wide pH range. | |
| ASTRA REO-14010 | BYK-8421 | WB | 20% | EVA wax emulsion, imparts thixotropic rheology to the system. Affects the orientation of metallized pigments in the film. | |
| ASTRA REO-15010 | BYK-R605，BYK-405 | O / RC | 50% | Prevents settling of fillers and pigments and prevents paint and varnish from flowing. May enhance the effect of pyrogenic silicon dioxide. | |
| ASTRA REO-16010 | BYK-R607 | O / RC | 65% | Prevents settling of fillers and pigments and prevents paint and varnish materials from flowing. May enhance the effect of pyrogenic silicon dioxide. | |
| ASTRA REO-17010 | Acrysol DR 72 (low viscosity) | WB | 30% | Associative acrylic thickener, provides pseudoplastic rheology. The thickener is effective at pH 7-9. | |
| ASTRA REO-18010 | Acrysol DR 72 (medium viscosity) | WB | 30% | Associative acrylic thickener, provides pseudoplastic rheology. The thickener is effective at pH 7-9. | |
| ASTRA REO-19010 | Acrysol DR 72 (high viscosity) | WB | 30% | Associative acrylic thickener, provides pseudoplastic rheology. The thickener is effective at pH 7-9. | |
| ASTRA REO-20010 | Acrysol TT 935 | WB | 30% | Alkaline-swellable acrylic thickener, provides pseudoplastic rheology. The thickener is effective at pH 7-9. |
Need technical assistance?
Our team can help you select the right additive for your formulation.
Contact Technical Support