Chemical Composition: Gum Rosin Modified Octylphenol Resins. Technology Parameter Apparent: Light Amber Color, Brown Solid. Viscosity: 12000--23000mpa.s/25℃ (tested by pyramid viscosimeter). 7500--12000 mpa.s/20℃(samples: sesame oil=1:2testing after dissolving within 250℃) (tested by whirl-viscosimeter). Acid Value: ≤25mg KOH/g Softness Point: 160-175℃ N-heptane Value: ≥5ml/2g.25℃ Characteristics of Product: ●Macroolecule weight、higher viscosity、better dissolve. ●Improving the non-scratch of ink film for printing ink after print.