RK-9864 is a special polysiloxane and polyether copolymerization defoamer with special structure of the active synergist. It has strong anti-foaming performance in polyurethane, acrylic emulsion system, wood furniture coatings, architectural coatings, automotive production line coatings, paper coatings, sealant and adhesive, especially suitable for paint mixing phase foam control, with excellent comprehensive performance.