... industry, C5 hydrocarbon resin is an important tackifier. It’s used mostly in the hot-melt adhesive and pressure-sensitive adhesive since ... improves to different degrees the properties of adhesives it’s used in.Recently, C5 resins has gradually taking the place of ... , odorless, low volatility; in hot-melt adhesives, PR1 can be used alone as tackifier, as well as with other tackifier resins ...