Rosin Tackifier (Gum Rosin, WW/WG Grade)
Gum Rosin is a natural resin obtained by tapping pine trees, consisting primarily of abietic and related resin acids. It is a cost-effective tackifier for hot-melt adhesives, pressure-sensitive adhesives (PSA), and rubber-based adhesive formulations. Rosin and its derivatives increase tack, peel strength, and cohesion in adhesive systems while maintaining good compatibility with natural and synthetic rubbers as well as EVA polymers.
Technical Specifications
| color | WW–WG (USDA scale) |
| acidNumber | 165–175 mg KOH/g |
| appearance | Pale yellow to amber solid |
| ashContent | ≤0.03% |
| softeningPoint | 75–85 °C (Ring & Ball) |
Applications
- Hot-melt adhesives for packaging
- Pressure-sensitive adhesive labels and tapes
- Rubber-based contact adhesives
- Printing inks as binder resin
- Chewing gum base
Key Features
- Natural, renewable, and cost-effective tackifier
- Good compatibility with rubber, EVA, and wax systems
- Improves initial tack and peel strength
- Wide range of derivatives available (ester, hydrogenated)