Polymerized Rosin

We are offering polymerized rosin. the polymerized rosin is a kind of yellow & translucent irregular solid made from gum rosin by a sulfuric acid and zinc chloride process. It has characteristics of high content of dimer, high softening point & acid value, no crystallization, low content of hot-water-soluble materials, excellent solubility in oil, light color changes of lead acetate, and other special characteristics. b-90, b-95 & b-100 produced by the new process has special characteristics of light color and a low molecular weight.