Excellent tack, internal cohesion Excellent thermal resistance Good compatibility with wax, EVA polymers. Excellent resista Pentaerythritol Rosin Ester (PR-100LS) is a light ... , natural rubber, hydrocarbon and terpene tackifying resins. Characteristics Excellent tack, internal cohesionExcellent thermal resistance Good compatibility with wax, EVA polymers. Excellent ...