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BarrierPro 4545 is a styrene-butadiene emulsion polymer of medium to high stiffness. It dries to form a flexible, tough film of high water resistance. BarrierPro 4545 can be compounded with fillers and other additives to form coatings for a variety of applications. Because of its high strength film, it makes an excellent product for blending with other BarrierPro products to strengthen water proof membranes, specialty paints and sealants.