Microcrystalline Wax (Rubber Grade)
CAS Number: 63231-60-7
Microcrystalline wax for rubber is a higher molecular weight, branched-chain wax that provides superior protection compared to paraffin wax under dynamic flex conditions. Its slower and more uniform bloom rate makes it particularly effective in tire sidewalls subjected to repeated flexing during service, preventing the wax film from cracking and losing protective function. Microcrystalline wax is often blended with paraffin wax to achieve a broad-spectrum protective wax system.
Technical Specifications
| appearance | White to off-white solid |
| moisture (%) | ≤0.10 |
| oil content (%) | ≤1.0 |
| color (ASTM D1500) | ≤1.0 |
| melting point (°C) | 62–72 |
| penetration (0.1mm, 25°C) | 10–25 |
Applications
- Tire sidewall dynamic ozone protection
- Rubber conveyor belts subject to flex cycling
- Automotive weatherstripping and door seals
- Blended wax system component with paraffin
- Industrial rubber goods in outdoor environments
Key Features
- Slower bloom rate than paraffin for sustained flex protection
- Higher molecular weight prevents film cracking under dynamic use
- Effective blending partner with paraffin wax for optimal protection
- Stable performance across a wide service temperature range
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CAS Number
63231-60-7
Category
Rubber / Tire ChemicalsAvailability
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