ABSTRACT
This polymer has the ASTM designation PNR and is commercially known as Norsorex. It is always plasticized with a naphthenic or aromatic oil or an ester plasticizer to lower its T g of 35°C down to - 60°C. It has an apparent density of 0.35, and its molecular weight (Mw) is above 2 million. It has a very low ash content ( <0.2%) and low volatile matter ( <0.5% ). It is obtained in powder form (grain size 0.05-0.80 mm).
