Bermodol additives are polyurethane- or surfactants-based and can be used to modify rheological properties in paint and aid in dispersing pigments.
The Bermodol PUR range of polyurethane-based associative thickeners – Bermodol PUR 2102, 2110 and 2150 – has been developed to enable paint manufacturers to formulate their paints to suit market preferences on viscosity, brushing resistance, hiding power, levelling, consistency and spatter-free application.
Since they are associative thickeners, they are highly dependent on their interactions with other ingredients in the formula, including binders, surfactants, dispersants and pigment particles. Their hydrophobic groups interact with other hydrophobic groups or with surfaces resulting from components present in the paint. They also interact with one another, contributing to an increase in viscosity.
The main difference between the products lies in how much they associate with other hydrophobic components. Bermodol PUR2102 display the strongest associations. Bermodol PUR 2110 displays the weakest association. Their differing associative performances lead to different rheological behavior, enabling them to be employed to obtain different end-results in paint formulations.