RHEOBYK-425

RHEOBYK 425 is a VOC-free rheology additive that sets the in-can viscosity and improves anti-sagging and anti-settling properties of aqueous systems. RHEOBYK 425 is a urea-modified polyurethane solution that enables highly pseudoplastic flow behavior through associative interaction with dispersion particles. Its rheological effectiveness is not dependent on pH value and does not impair gloss. RHEOBYK 425 improves storage stability of formulations by reducing settling. It is suitable for applications where maintaining uniform thickness and preventing dripping is important. RHEOBYK 425 also increases millbase viscosity, improving dispersion conditions during grinding of pigment pastes.