Gum Rosin is a
solid form with semi-transparent and light yellow, also named Greek Pitch or
Colophony. It is made of viscous liquid resin that obtained from pine tree,
after take out the turpentine from the resin with process of vacuum
distillation, the remainder is filtered to become the finished products. The
quality grading includes X, WW, WG, N, M & K.
Gum Rosin features high softening point
& acid value, and has special chemical activity, it can be dissolved easily
in many organic solvents, and esterified and neutralized with carboxyl, and
reacted by double-bond, disproportionated, hydrogenated and polymerized to
optimize its physicochemical property. Gum rosin can be widely used in
manufactures of paper, coatings, inks, rubbers, soaps, electronic industrial
products, food grade ester gum, rosin ester resins etc.
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