 member of a novel series of defoamers based on patented FoamStar® technology  very fast bubble break versus conventional defoamers  effective in industrial coatings based on acrylic emulsions  good persistence FoamStar® ST 2400 will be equally effective in both the grind and the letdown.  non-separating and non settling  effective in industrial coatings based on acrylic emulsions  very fast bubble break versus conventional defoamers  effective against micro- and macro foam  good persistence