BYK Additives & Instruments is one of the world’s leading suppliers in the field of additives and measuring instruments. As a globally operating specialty chemicals company, BYK has production sites in Wesel, Kempen, Moosburg and Schkopau (Germany), Deventer and Denekamp (Netherlands), Widnes (UK), Wallingford, Chester, Gonzales, Louisville (USA) and Tongling (China).



Natural mineral based rheology modifier based on a specially selected and activated smectite for aqueous architectural and industrial coatings, ceramic glazes, inks, and consumer care products to produce storage stable systems with excellent application performance.


OPTIGEL WX, a specially selected and activated smectite product, has a high swelling capacity in water and shows a marked thixotropic thickening effect. OPTIGEL WX is stable in diluted acids and bases and is particularly effective in acidic, neutral and alkaline systems.

The application of OPTIGEL WX allows the production of systems which are storage stable. Due to the incorporated yield value and pseudoplasticity, the application performance is improved considerably. OPTIGEL WX prevents the settling of heavy pigments of fillers. As thixotropic agent, OPTIGEL WX inhibits sagging. Thus it allows the application of thick coatings.

Recommended Use

· Emulsion paints
· Release coatings
· Silicate paints
· Paint strippers
· Water reducible paints
· Liquid cleaners
· Inks
· Grinding pastes and abrasives
· Car undercoatings