Glycerol Ester of Rosin (Ester Gum)
Glycerol Ester of Rosin (Ester Gum) is produced by esterification of rosin with glycerol, yielding a pale-colored resin with improved compatibility, higher softening point, and greater stability than unmodified rosin. It is a premier tackifier for hot-melt adhesives, pressure-sensitive tapes, and chewing gum bases, offering excellent tack, peel strength, and shear resistance. Ester Gum is FDA-compliant for food-contact applications and compatible with SIS, SBS, EVA, and natural rubber.
المواصفات الفنية
| color | ≤2 (Gardner) |
| acidNumber | 5–12 mg KOH/g |
| appearance | Pale yellow to water-white solid |
| ashContent | ≤0.05% |
| softeningPoint | 80–88 °C (Ring & Ball) |
مجالات التطبيق
- Hot-melt pressure-sensitive adhesives
- Packaging and bookbinding hot-melt adhesives
- Chewing gum base (FDA-compliant)
- SIS/SBS-based tape and label adhesives
- Natural rubber-based adhesive compounds
مميزات المنتج
- FDA-compliant for food-contact packaging adhesives
- Higher softening point than unmodified rosin
- Excellent tack and peel performance in HMPSA
- Good compatibility with SIS, SBS, EVA, and NR