Westvaco Resin 90 Stabilized resin derived from tall oil rosin Westvaco Tackifier >> Rosin Rubber - Elastomer (Chloroprene, Butyl …) Westvaco Resin 90 A light-colored, catalytically stabilized fluid resin derived from tall oil rosin. For synthetic rubber producers who prepare their own soaps, Resin 90 is an excellent base for polymerization reaction emulsifiers. Its high purity ensures stability and consistency in the polymer and its fluidity improves handling safety and energy savings by lowering minimum handling temperatures. Its fluidity, compatibility and heat stable properties also makes its suitable for use as a shortstop in various solution polymers. Resin 90 can be used as a plasticizer and tackifier in any application requiring a low softening point, stabilized rosin. Light-colored, catalytically stabilized fluid resin derived from tall oil rosin. Can be used as a plasticizer and tackifier in any application requiring a low softening point, stabilized rosin. Possesses fluidity, compatibility and heat stable properties.