BYK Additives & Instruments

Rheology Additives: Increasing viscosity - Waterborne systems - Liquid additives



Depending on the viscosity profile (pseudoplastic or thixotropic), liquid rheology additives are made up of modified urea or urea-modified polyamides, which are dissolved in a solvent. If this thickener is added to the system, the active substance precipitates out as small needle-shaped crystals that then form hydrogen bonds to create a three-dimensional network and hence influence viscosity. Advantages of liquid rheology additives are the precise and easy incorporation, which can also take place after the production of a system (post-addition).




BYK Additive Recommendations

RecommendationBYK-420

Liquid rheology additive for aqueous and water-reducible coating systems for improving antisagging and anti-settling properties. The additive is also especially suited for manufacturing aqueous pigment concentrates. BYK-420 causes thixotropic flow behavior; post-addition is possible.

BYK-425

VOC-free, liquid rheology additive for aqueous dispersion-based systems to improve anti-sagging and to adjust in-can viscosity. The additive is suitable for increasing the grinding viscosity of aqueous pigment pastes.

BYK-7420 ES

Liquid rheology additive for aqueous and water-reducible coating systems for improving anti-sagging and anti-settling properties. The additive is also especially suited for manufacturing aqueous pigment concentrates. BYK-7420 ES creates thixotropic flow behavior. Post-addition is possible.