Belro®

Dark wood rosin. It is a medium softening point, dark, thermoplastic, acidic resin. It is obtained during the separation and refining of various natural resins and terpenes extracted from aged pinewood. Belro dark wood rosin is composed of rosin-type resin acids, oxidized and otherwise modified forms of these materials, and a minor amount of the neutral and colored constituents associated with dark wood rosins. Offers high acid value, good oxidation resistance, good thermoplasticity, wide compatability and chemical reactivity.