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are an aliphatic viscosifying hydrocarbon resin used widely in tyre rubber compounding. Ba su da cikakkiyar daidaituwa kuma suna da kyakkyawar jituwa tare da roba na zahiri da kowane irin roba, da sauransu, a matsayin Terpene nazarin abubuwa (kamar su Terpene). In rubber Compounding ,they can be used as: viscosifier,reinforcement agent, softener, filler, etc.
