Dispersants for high gloss alkyd emulsion topcoat

Alkyd emulsion binders interact specifically in presence of fillers, pigments and various hydrophically modified additives.

Their reactivity is generally stronger compared to other water based emulsion binders
(acrylic, styrene acrylic, ethylene vinyl acetate) and therefore can lead to high low shear
viscosities (Brookfield viscosities) which are generally not desired for high gloss systems.

Key advantages of Coadis™ BR 85 and Coapur™ XS 22 combination

• Very Newtonian rheology type
• High level of gloss equivalent to that of solvent-based formulations
• Good stability after ageing

Key takeaways:

Comparison of Coadis™ BR 85 with competitors’ dispersants

• Viscosity evolution after 1 week @50°C
• Paint appearance after 1 week @50°C
• Gloss after 72 hours