Preserving paint stability during storage remains a challenging task for formulators.
Issues such as sedimentation should therefore be avoided.
The use of dispersing agent is firstly highly recommended in order
to prevent particles from re agglomerating. Nevertheless, it is necessary to slow
down the sedimentation by increasing the viscosity of the system.
The use of specific rheology tools helps thicken the water phase of the formulation
thus preventing particles such as pigments and fillers
The paint viscosity should therefore be preferentially adjusted at low shear rates
using highly pseudo plastic rheology modifiers. Acrylic thickeners, such as
Rheotech ™ 4800, Viscoatex™ and Thixol™, are considered
to be the best choice to provide in can viscosity.
Coatex recommends a wide range of anti-settling agents that constitutes the ideal
choice to formulate
highly performing water-based coatings.