1,3:2,4-Bis(3,4-dimethylobenzylideno) sorbitol(CAS:135861-56-2)
Product Overview
1,3:2,4-Bis(3,4-dimethylbenzylidene)-D-Sorbitol (CAS:135861-56-2) is a high-efficiency sorbitol-based clarifying nucleating agent designed to significantly improve the optical clarity, crystallization rate, and surface gloss of polypropylene (PP) and polyethylene (PE) products.
Compared with conventional dibenzylidene sorbitol (DBS) nucleating agents, this advanced derivative offers higher thermal stability, lower blooming tendency, and superior long-term transparency, making it ideal for thin-wall injection molding and high-end transparent plastic applications.
Key Benefits & Performance Advantages
- ✔ Excellent Transparency Enhancement
Reduces haze and improves light transmission in PP products - ✔ Fast Crystallization Rate
Shortens molding cycle time and improves production efficiency - ✔ High Thermal Stability
Suitable for high-temperature processing of polypropylene - ✔ Low Blooming & Migration
Ensures clean surface appearance and long-term optical stability - ✔ Low Dosage, High Efficiency
Typical addition level: 0.1–0.3 wt%
Typical Applications
Polypropylene (PP)
- Transparent food containers
- Medical syringes and disposable medical devices
- Thin-wall injection molded packaging
- Household and consumer plastic products
Polyethylene (PE)
- HDPE / LLDPE films
- Packaging materials requiring improved surface gloss
Polymer Modification
- PP compounds and masterbatches
- PP/PE blends for enhanced appearance and stiffness
Technical Specifications (Typical Values)
| Item | Specification |
|---|---|
| Chemical Name | 1,3:2,4-Bis(3,4-dimethylbenzylidene)-D-Sorbitol |
| Chemical Type | Sorbitol-based clarifying nucleating agent |
| Appearance | White to off-white crystalline powder |
| Odor | Odorless |
| Melting Point | ≥ 240 °C (decomposes) |
| Solubility | Insoluble in water |
| Volatility | Very low |
| Thermal Stability | Excellent |
| Recommended Dosage | 0.1 – 0.3 wt% |
| Processing Method | Direct addition or masterbatch |
Note: Specifications may be customized upon request.
Packaging & Supply
- Standard packaging: 10 kg bag or carton
- Customized packaging available
- Global export support with full documentation
