XR 4257 Rosin ester Arizona Chemical Tackifier >> Rosin Acrylics/ Acrylates Rubber - Elastomer (Chloroprene, Butyl …) ADHESIVE >> Hot-melt >> Pressure sensitive (HMPSA) XR-4257 is a unique high-solids dispersion of a rosin-based tackifier, especially formulated for pressure sensitive adhesive (PSA) applications. XR-4257 is compatible with the dominant PSA polymers including acrylics and CSBRs. Compared to AQUATAC® 6085, most adhesives formulated with XR-4257 will have more aggressive tack and peel, with minimal loss in shear properties, even after aging. High solids Higher solids formulations; better economics Intermediate 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 adhesive applications. Provides aggressive tack and peel, with minimal loss in shear properties, even after aging.