High-MW Polyisobutylene PIB-1000
CAS 9003-27-4
In StockMOQ
200 kg
Lead Time
5–10 days
Packaging
200 kg drums
Specifications
| Flash Point | >200°C |
| Active Content | 100% |
| Density (25°C) | 0.91 g/ml |
| Viscosity (100°C) | 5,000–8,000 mPa·s |
| Number Average MW (Mn) | 1000 ± 100 g/mol |
FAQ
Higher molecular weight increases chain entanglement density, reducing free volume and the diffusion coefficient for noble gases. PIB-1000 exhibits substantially lower argon permeability than low-MW grades, helping IG units retain >90% initial Ar fill after 25 years when formulated into compliant edge-seal compounds meeting EN 1279-3 requirements.
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