MBS(Methylmetharylate-Butadiene-Styrene),commonly known as MBS impact modifier or MBS resin, is a new type of polymer material synthesized under the particle design concept. It is prepared by lotion grafting polymerization of methyl methacrylate (M), butadiene (B) and styrene (S).It has typical core-shell structure in submicroscopic morphology. The core is a spherical rubber core with a diameter of 10 nm ~ 100 mm, and the outside is a shell composed of styrene and methyl methacrylate. Because the dissolution parameters of methyl methacrylate and polyvinyl chloride (PVC) are similar,It acts as an interface adhesive between PVC resin and rubber particles, forms homogeneous phase in the process of processing and mixing with PVC, and gives the product excellent impact resistance.

 MBS impact modifier is similar to other types of modifiers. It is a PVC / MBS Blend composite system formed by blending with PVC. It has excellent weather resistance, impact resistance, aging resistance, coloring, toughness and processing fluidity. It is widely used in PVC hard sheet, pipe, plate, interior decoration board, film, bottle material and various profile products.