SBR 4503 Styrene-butadiene copolymer Ameripol Synpol Styrene copolymer >> Styrene butadiene rubber, SBR ADHESIVE 4503 is a hot polymerized rosin acid polymer. The polymer is crosslinked to the same degree as Ameripol Synpol 1009SBR, but is rosin acid emulsified and higher in bound stryene content (30%). 4503 is useful in spray adhesives and in construction adhesives offers the properties of a blend of 1009/1013 in a single polymer. High bound styrene content, hot polymerized rosin acid emulsified SBR polymer. Possesses a rosin acid emulsifier. Used in spray and construction adhesives.