Polyisobutenyl Succinic Anhydride (PIBSA)
Polyisobutenyl succinic anhydride (PIBSA) is the key intermediate in the synthesis of PIBSI dispersants, produced by the thermal or chlorination-free ene reaction of high-reactivity polyisobutylene with maleic anhydride. It is also used directly as a corrosion inhibitor and emulsifier in metalworking fluids, fuel additives, and specialty lubricants. The anhydride functionality reacts readily with amines, alcohols, and other nucleophiles to produce customized lubricant additive molecules.
Teknik Özellikler
| appearance | Amber to dark amber viscous liquid |
| flash point (COC) | >200 °C |
| saponification number | 80–120 mg KOH/g |
| PIB molecular weight (Mn) | 950–2300 Da |
| unreacted maleic anhydride | <0.1 wt% |
| kinematic viscosity (100°C) | 100–2000 mm²/s |
Uygulama Alanları
- Synthesis intermediate for PIBSI ashless dispersants in engine oil formulations
- Corrosion inhibitor and emulsifier in water-based metalworking fluids
- Fuel additive intermediate for gasoline and diesel injector cleanliness additives
- Asphalt emulsifier and adhesion promoter in road construction applications
- Coupling agent and compatibilizer in specialty polymer and lubricant formulations
Ürün Özellikleri
- High-reactivity PIB (HR-PIB) based grades enable chlorine-free manufacturing of PIBSI dispersants
- Reactive anhydride group allows versatile downstream chemistry to produce customized additives
- Multiple molecular weight grades available (Mn 950–2300) to match dispersant application needs
- Low unreacted maleic anhydride content ensures additive product quality and low corrosivity
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