Rheology Modifiers: Optimal Selection & Use

Controling the rheological properties plays a dominant role during the production, storage, application and curing of paints and inks. But too often, formulators struggle selecting the right rheology modifier for better stability, sag resistance, spray- and brush-ability, opacity... while avoiding unwanted interactions (with colorants, surfactants...) !

1. Save time selecting rheology modifiers with an organized set of selection criteria (rheology profile, cost, physical properties…)
2. Achieve faster targeted stability, flow… by understanding how they are impacted by your rheology modifiers selection & use
3. Optimize thickeners efficiency (the right loading at the right time, no unwanted interaction) with tips learnt over 40 years in the field

The following sections will be covered during this session:

1. Introduction: rheology and role of thickeners



2. Characteristics of main paint thickeners:
   Associative thickeners (polyurethane, hectorite organoclays…), hydrogenated castor oils, PA, cellulosics, acrylates, clays…
   • Advantages and limitations
   • Compatibility with other ingredients
   • Main application area
   • ...


3. How to select the right rheology modifiers for solventborne and waterborne systems
depending on your needs:

• Coatings performance (sag resistance, flow & leveling…)
• Film properties (gloss, water resistance…)
• Application requirements
• ...


4. Practical examples: roof-coating, matt emulsion paint, SF epoxy airless spray...



5. Summary