BYK 1641 is a highly effective defoamer that prevents foaming during both production and application. It is VOC-free and mineral oil-free making it suitable for various formulations. BYK 1641 is easy to handle, can also be post-added, and shows very good compatibility in systems. It ensures homogenous distribution with sufficient shear and prevents cratering. BYK 1641 contains special polymers and particles that destroy foam effectively. Being free of volatile substances and mineral components, BYK 1641 supports sustainable manufacturing and is recommended where low emissions are required. It maintains optimal viscosity and eliminates defects caused by air entrainment.