SBR 4503 Crumb Styrene-butadiene copolymer Ameripol Synpol Styrene copolymer >> Styrene butadiene rubber, SBR ADHESIVE SEALANT 4503 crumb rubber is produced in free flowing crumb form which eliminates the need for milling, cutting, or grinding equipment. The crumb particles retain the porous nature of the coagulated rubber and can be dissolved in a solvent faster than milled or pelletized bale rubber. 4503 crumb is used in spray adhesives and for the adhesive and sealant manufacturer it offers the properties of a blend of Ameripol Synpol 1009/1013 in single polymer. Free flowing crumb, high bound styrene content, hot polymerized rosin acid emulsified SBR polymer. Possesses a rosin acid emulsifier. Used in spray adhesives and for adhesives and sealants. Can be dissolved in a solvent faster than milled or pelletized bale rubber.