Petroleum resin is a low molecule polymer obtained by C5 and C9 fractions of the ethylene device, which can be roughly divided into C5 aliphatic petroleum resin with C5 fraction, C9 aromatic petroleum resin with C9 fraction, C5-C9 copolymer petroleum resin with C5 and C9 fractions, as well as double cyclic glutarene (DCPD) lipocyclic petroleum resin and hydrogen modified petroleum resin.

Oil resin properties

The softening point of petroleum resin is generally 80-140℃, with a relative density of 0.970 to 0.975. The relative molecular mass is less than 2103, insoluble in water, easily soluble in organic solvents, and has the characteristics of low acid value, good adhesion, water resistance and chemical resistance.And has the characteristics of good regulation of viscosity and thermal stability.Therefore, petroleum resin can completely replace rosin resin, terpene resin for hot melt glue and pressure sensitive adhesive adhesive, play the role of improving infiltration and adhesion.The emergence of petroleum resins also addresses the problems of limited sources of natural rosin and terpene resins, poor thermal stability, expensive prices, and easy aging.And the use of petroleum resin with a quality score of 60% can achieve the performance of rosin resin modified hot melt glue.