Smart science to improve lives™
Open search Basket 0 View basket
Industrial Specialties
Blue gel

Rheology modifiers

Viscosity and rheology modifiers are substances that alter the viscosity (or "thickness") of a liquid. Viscosity modifiers alter a fluid’s resistance to flow. Rheology modifiers can do the same thing, but may include additional abilities, like change the viscosity of a fluid depending on the forces that are being applied.

All of our viscosity and rheology modifiers alter the properties of liquids but the reason why a product is chosen will depend on the specific application conditions. For some applications, thickening a formulation will help with the manufacture of a product (improve the production process), where for other applications, a modifier will help to create the final product.

Fluid dispersions and slurries of ceramics, conductive particles, and nanomaterials are important inputs to display technologies and electronics, and energy storage devices. Rheology modifiers help to control viscosity and flow to improve consistency of application and extend useable lifetimes of these systems.

Besides just viscosity, the structure and solid-like properties of especially nanodispersions play a crucial role in dispersion attributes and behaviours. Often the rheology of products for the advanced materials market has to be adjusted to fit the needs of each application. Therefore, formulation may require specifically tailored rheology modifiers.

Our high-performance rheology modifiers include several different technologies, versatile enough to give formulators the desired rheological characteristics to both aqueous and non-aqueous formulations.

Large inkjet printer in full production

Rheoptima™ LB34 TDS

Rheoptima LB34
202.3 KB

Thermally reversible gellants
As well as a portfolio of aqueous rheology modifiers, Croda offer a range of speciality polymeric thickening agents based on a renewable polyamide technology. These have been designed to thicken solvents of almost any polarity. These products form thermo reversible gels.

Solar panels in field of rape seed flowers

Key benefits of Croda gellants

  • Can be used as stearic stabilisers for dispersions and particulates due to their acid and amine functionality 
  • Versatile product range with different terminal end groups giving compatibility in a variety of formulations 
  • Thixtropic rheology at low (<5%) concentration 
    Ideal for printing inks and pastes 
  • High renewable carbon content 

Polyamides contain both amine and acid functionality making them good dispersants, providing excellent stearic stabilisation of particles. This allows for higher solids loading whilst maintaining a workable viscosity. 

Would you like some more help on our rheology modifiers?