Dispersions & Resins

Rheology Modifiers

BASF’s synthetic rheology modifiers include non-ionic associative (HEUR/HMPE), anionic associative (HASE) and nonassociative thickener (ASE) technologies. Our focus is on highly efficient additives for water-based systems. Our rheology modifiers also provide additional functionalities like wetting properties and health or environmental benefits such as suitability for formulations low in VOCs, odors, free of APEO and tin.

Rheology modifiers from BASF effectively reduce dripping and spattering of paints during roller or brush application. Sag resistance is improved by a rapid but controlled viscosity increase after application. They also reliably prevent sedimentation of pigments during transport and storage of the paints.

We offer six classes of rheological additives for paints and coatings:

  •  Alkali swellable emulsions (ASE) 
  • Hydrophobically modified alkali swellable emulsions (HASE)
  • Hydrophobically modified polyurethanes (HEUR) 
  • Hydrophobically modified polyethers (HMPE) 
  • Attapulgites (inorganic rheology modifiers) 
  • Castor oil, wax and urea based thixotropes 

Each product class has its own properties and applications. Our Rheovis® PU and PE series of associative thickeners stand out as a class of groundbreaking additives based primarily on hydrophobically modified polyether and polyurethane derivatives.


At BASF Performance and Formulation Additives, you will find experts who understand your specific needs and are glad to support you in finding the right rheology modifiers for your formulations.

Performance Highlights

  • Broad portfolio of synthetic rheology modifiers, including Non-ionic Associative (HEUR / HMPE), Anionic Associative (HASE) and Non-associative Thickener (ASE) technologies
  • Focused on water-based systems with highly efficient products that provide additional functionality like wetting properties and health or environmental aspects (free of VOC, odor, APEO and heavy metals) coupled by excellent long term stability

Sustainabilty Highlights

  • VOC-free in accordance with EU 2004/42 and US-EPA Method 24
  • Does not contain mineral oils
  • Best-in-class with ultra-low SVOC
  • Free of colors
  • Environmentally sound polymer technology
  • Designed to be used in paints with pro-environmental labelling (Blue Angel, Ecolabel, German TÜV)

Practical Guides for BASF Rheology Modifiers

BASF Rheology Modifiers Product Recommendation for Asia Pacific
BASF Rheology Modifiers Product Recommendation for North America