PIB – Polyisobutylene


It is a linear polymer of isobutylene of different molecular weights, and possesses excellent resistance to oxidative and thermal degradation. Polyisobutylene is chemically inert, hydrophobic and impermeable to water vapour or gas. a synthetic liquid polymer, which is a straight chain hydrocarbon structure of Polyisobutylene that is produced in a variety of grades through a rigid low temperature polymerization process. It is derived from raw material consisting of mainly Isobutylene. The compact straight chain structure results in brilliant moisture and barrier properties and is soluble in a wide range of organic solvents.

All grades are colourless (water white), non-staining and have little or no odour and are mostly used in applications where low temperature flexibility is a requirement.


Grade Molecular Weight Viscosity @ 100 Deg.c, cSt
PIB – 1000 950 ±50 230 ± 25
PIB – 1300 1300 ±100 660 ± 25
PIB – 1700 1700 ±100 2000 ± 100
PIB – 2400 2400 ±100 4290 ± 225


PIB is widely used in lubricant and fuel additive markets, as well as multiple other applications such as caulks, sealants, adhesives, packaging, greases , dispersants and emulsifiers etc.