XR 4258 Rosin ester Arizona Chemical Tackifier >> Rosin Acrylics/ Acrylates Rubber - Elastomer (Chloroprene, Butyl …) ADHESIVE >> Hot-melt >> Pressure sensitive (HMPSA) XR-4258 is a unique high-solids dispersion of a rosin-based tackifier, especially formulated for pressure sensitive (PSA) and product assembly adhesive applications. XR-4258 is compatible with the dominant PSA polymers including acrylics and CSBRs. Compared to AQUATAC® 6085, most adhesives formulated with XR-4258 will have higher shear retention and improved heat resistance. XR-4258 is also compatible with most polymer emulsions employed for product assembly adhesives. High solids Higher solids formulations; better economics High softening point Improved tack and peel performance. Excellent mechanical stability Extended coater runs improve end user productivity. Unique surfactant system Improved aging and enhanced adhesive properties. PSAs for tape label and decal applications. Product assembly adhesives to replace solvent assisted resin systems. High-solids dispersion of a rosin-based tackifier for pressure sensitive and product assembly adhesive applications. Provides high shear retention and improved heat resistance.