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-13010 | Hemings 105A | Water-based | 50% | Prevents settling of fillers and pigments and prevents runoff of water systems. Works in a wide pH range. | ||
| ASTRA REO-14010 | BYK-8421 | Water-based | 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 | Solvent-based / Radiation-curable | 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 | Solvent-based / Radiation-curable | 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) | Water-based | 30% | Associative acrylic thickener, provides pseudoplastic rheology. The thickener is effective at pH 7-9. | ||
| ASTRA REO-18010 | Acrysol DR 72 (medium viscosity) | Water-based | 30% | Associative acrylic thickener, provides pseudoplastic rheology. The thickener is effective at pH 7-9. | ||
| ASTRA REO-19010 | Acrysol DR 72 (high viscosity) | Water-based | 30% | Associative acrylic thickener, provides pseudoplastic rheology. The thickener is effective at pH 7-9. | ||
| ASTRA REO-20010 | Acrysol TT 935 | Water-based | 30% | Alkaline-swellable acrylic thickener, provides pseudoplastic rheology. The thickener is effective at pH 7-9. | ||
| ASTRA REO-21010 | — | Water-based | 30% | Alkaline-swellable acrylic thickener, provides pseudoplastic rheology. The thickener is effective at pH 7-9. Provides system stability during storage. |
Articles about ASTRA REO®
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…
Read
Additive Lead Times: What to Expect and How to Shorten Them
Additive Lead Times: What to Expect and How to Shorten Them ! Decorative title card illustration Specialty formulation additives, including dispersants, defoamers, and rheology modifiers, typically move from purchase order to delivery in 10 to 30 days, according to chemical industry supply-chain dat…
Read
How to Qualify Additive Suppliers Before the First Order
How to Qualify Additive Suppliers Before the First Order ! Decorative title card illustrating supplier qualification theme The minimum evidence required to approve a new additive supplier for a trial order is a Certificate of Analysis (CoA), a Safety Data Sheet (SDS), a Technical Data Sheet (TDS), a…
ReadNeed technical assistance?
Our team can help you select the right additive for your formulation.
Contact Technical Support