Bis polyisobutylene succinimide ashless dispersant

Description

A bis polyisobutylene succinimide ashless dispersant is a type of dispersant additive that is commonly used in lubricants and fuels. It is derived from polyisobutylene, a polymer made from the polymerization of isobutylene monomers, and succinic anhydride, which reacts with the polyisobutylene to form the succinimide functional group.

Ashless dispersants are called “ashless” because they do not leave behind any solid ash residue when burned. This is important in applications where combustion may occur, such as in engine oils or fuels, as ash residue can contribute to deposits and other unwanted effects.

Bis polyisobutylene succinimide ashless dispersants have several important functions in lubricants and fuels:

1. Dispersancy: These additives help to keep insoluble particles, such as soot, wear metals, and other contaminants, dispersed and suspended in the fluid. This prevents the formation of deposits and sludge that can build up in the system and affect its performance.

2. Detergency: In addition to dispersing particles, these additives also have detergent properties and help to clean and remove existing deposits and contaminants. They can solubilize existing deposits and prevent them from adhering to surfaces, improving engine cleanliness and efficiency.

3. Anti-wear protection: Bis polyisobutylene succinimide ashless dispersants can form a protective film on metal surfaces, reducing friction and wear. This helps to prolong the life of the lubricated parts and reduce the risk of damage or failure.

4. Corrosion inhibition: These additives can also provide corrosion protection by forming a protective layer on metal surfaces, preventing contact with corrosive substances and reducing the risk of rust and corrosion.

Overall, bis polyisobutylene succinimide ashless dispersants play a crucial role in lubricants and fuels by improving cleanliness, preventing deposits, reducing wear, and protecting against corrosion. They are widely used in various applications, including automotive and industrial lubricants, hydraulic fluids.