Coumarone resin C90 is appearance is dark brown granular solid. Coumarone resin C90 is made by C9 fraction, a by-product of ethylene, through thermal-polymerization. C90 has the properties of good solubility, mutual solubility, water resistance, insulation and very good chemical stability over acid and alkali, also Coumarone resin C90 have good adhesive strength and lower heat conduction.