Coumarone-Indene Resin (Rubber Tackifier)
CAS Number: 9003-29-6
Coumarone-Indene resin is a petroleum-derived tackifying resin widely used in NR and SBR rubber compounds to improve self-adhesion and building tack during tire and rubber goods manufacturing. It improves green strength, reduces building defects during tire assembly, and can also act as a processing aid to improve filler dispersion. Coumarone-indene resins are available in a range of softening points to match different compound processing temperatures.
Technical Specifications
| ash (%) | ≤0.20 |
| appearance | Light yellow to amber solid |
| moisture (%) | ≤0.50 |
| color (Gardner) | 5–12 |
| softening point (°C) | 70–120 (grade-dependent) |
| bromine value (gBr/100g) | ≤20 |
Applications
- Tire tread and sidewall tack improvement
- Rubber-to-rubber adhesion in tire building
- NR and SBR industrial rubber goods tackifier
- Rubber cements and contact adhesives
- Retreading rubber compounds
Key Features
- Improves building tack and green strength in tire compounds
- Wide softening point range for matched processing temperatures
- Good compatibility with NR, SBR, and BR rubber systems
- Cost-effective tackifier with long commercial history
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CAS Number
9003-29-6
Category
Rubber / Tire ChemicalsAvailability
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