PIB Bis-Succinimide
PIB bis-succinimide — a high-performance ashless dispersant with two PIB chains per molecule, giving strong dispersancy and thermal stability for demanding engine oils.
The high-dispersancy workhorse dispersant
Bis-succinimide dispersants attach two polyisobutylene chains to the polyamine head, giving higher dispersancy and thermal stability than mono types — the workhorse of modern engine oils.
PIB bis-succinimide is a high-performance ashless dispersant with two polyisobutylene (PIB) chains bonded to the polyamine head. This bis structure delivers strong dispersancy and good thermal stability, making it the workhorse dispersant for modern passenger car and diesel engine oils that must control sludge and soot over long drains. It suspends contaminants in fine suspension, preventing deposits and viscosity increase, and is used with detergents to keep engines clean. It is part of the ashless dispersant family.
PIB Bis-Succinimide — typical properties
Representative typical values for PIB bis-succinimide. Indicative only — exact values vary by grade and are confirmed on the TDS and batch COA.
| Property | Typical Value | Method / Note |
|---|---|---|
| Appearance | Amber to brown viscous liquid | Visual |
| Total Base Number (TBN) | ~20–50 mg KOH/g | ASTM D2896 · grade-dependent |
| Nitrogen content | ~1–2.2 wt% | Polyamine head |
| Kinematic viscosity (100°C) | ~150–600 mm²/s | ASTM D445 |
| Flash point (COC) | > ~170 °C | ASTM D92 |
| Density (15°C) | ~0.9–0.95 g/cm³ | Typical |
| Structure | Bis-succinimide | Two PIB chains |
Typical values for guidance only — not a specification. Request the TDS for the specific grade you need; the COA reports actual measured values for your batch.
Where PIB bis-succinimide dispersant is used
Passenger Car Engine Oils
Primary dispersant for sludge and deposit control in PCMO. See engine oil additives.
Diesel Engine Oils
Strong dispersancy for soot control in HDDO. See diesel engine oil.
Long-Drain Oils
Thermal stability supports performance over extended drain intervals.
Detergent-Dispersant Systems
The workhorse dispersant in modern detergent-dispersant packages.
Why formulators choose PIB bis-succinimide dispersant
Strong dispersancy
Two PIB chains give high dispersancy for demanding sludge and soot control.
Good thermal stability
Bis structure resists thermal breakdown over long, hot drain intervals.
Versatile workhorse
The standard dispersant for modern passenger car and diesel engine oils.
From sample drum to ISO tank
Sinolook supplies PIB bis-succinimide dispersant at any scale, from formulation samples to commercial bulk, to over 60 countries.
Frequently asked questions
What is PIB bis-succinimide used for?
Why is bis-succinimide preferred for diesel oils?
What is the difference between mono, bis and poly succinimide?
Does bis-succinimide affect seal compatibility?
Can Sinolook provide TDS, MSDS and COA?
Request PIB bis-succinimide dispersant from Sinolook
Tell us your target grade, application and volume — we'll send the TDS, a batch COA and a delivered quotation within 24 hours.
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