Category overview
Rheology modifiers are typically available in liquid, powder, or gel forms. Key features include shear-thinning or thickening behavior, improved application consistency, and enhanced sag resistance.
There is increased interest in sustainable and bio-based rheology modifiers, driven by the demand for environmentally friendly and VOC-compliant formulations. These modifiers are available in multiple forms, including synthetic polymer-based, associative thickeners, and inorganic variants. There is consideration about compliance with evolving regulatory standards, particularly regarding VOC content, heavy metal restrictions, and REACH guidelines in global markets.
Applications
Claims / benefits
Properties
| Others properties | Value & unit | Test condition | test method |
|---|---|---|---|
Density, Bulk (345) | Visible After Login | Visible After Login | Visible After Login |
Viscosity (1088) | Visible After Login | Visible After Login | Visible After Login |
Products
Recently launched products
RHEOLATE® HX 6030
by Elementis
- Recently launched
- Sustainable option
- Support available
Rheovis® HS 1169 MB
by BASF
- Recently launched
- Sustainable option
Rheovis® PU 1333 MB
by BASF
- Recently launched
- Sustainable option
Most popular products
Bentone® 38
by Elementis
- Support available
- Original documents
THIXATROL® ST
by Elementis
- Support available
- Original documents
Bentone® 34
by Elementis
- Support available
- Original documents
Popular suppliers
FAQs
What's the difference between a thickener and a rheology modifier?
All thickeners are rheology modifiers, but not all rheology modifiers just thicken. Thickeners (cellulosics, acrylics) mainly raise overall viscosity. True rheology modifiers, like associative or HEUR types, go further: shaping sag resistance, leveling, and how the coating rebuilds structure after shear from stirring, pumping, or spraying. That distinction affects both can performance and the final applied look.
How do I choose the right one for my formulation?
It depends on several factors: coating system (waterbased / solventbased), target viscosity profile, and compatibility with resins, pigments, and other additives. Other factors are shear sensitivity (does it thin enough to spray, then recover?), pH stability, and whether your bigger risk is sagging on vertical surfaces or poor leveling on horizontal ones. Testing 2-3 ingredients side-by-side at your target dosage is the fastest way to confirm the right fit.
Can rheology modifiers affect the coating's final appearance?
Yes. A poorly matched rheology modifier can cause poor leveling, visible brush or roller marks, hazy or cloudy films, or reduced gloss. Some types can also affect color development or cause syneresis (liquid separating out) in the can. The right modifier supports smooth application and holds the coating in place without compromising clarity, gloss, or the surface finish the formulation is designed to deliver.
Does adding more rheology modifier just make the coating thicker?
Not necessarily. Thickness (viscosity) is only one part of the picture. The right rheology modifier also governs how the coating behaves under stirring or spraying versus sitting still on a surface, so adding more can shift flow and leveling behavior without proportionally raising thickness. Overdosing can even introduce new defects, like poor flow, tackiness, or reduced clarity, rather than simply making the coating thicker.
Are rheology modifiers sustainable?
Many newer options are water-based, low-VOC, and derived from renewable feedstocks like cellulose or other biopolymers, making them more sustainable than older solvent-based chemistries. Sustainability varies by type, natural, synthetic, or associative, and by how they're manufactured, so a blanket answer isn't possible. Checking a supplier's environmental and safety data sheets is the most reliable way to compare options for your specific formulation.