What is PIB material?
Polyisobutylene (PIB) is the polymer of isobutene, the main component of butyl rubber. One of the most important properties is its solubility in water. This property makes the product group to a universally usable polymer, for a variety of different industrial applications.
What is PIB (CAS 9003-27-4) made of?
Polyisobutylene (PIB, CAS 9003-27-4) is a polymer produced from isobutylene, an olefin monomer, through a cationic polymerization process. It is also commonly referred to as polyisobutene, PIB polymer, or isobutylene polymer in the chemical industry.
PIB is a saturated, linear polymer with a repeating molecular structure of –(CH₂–C(CH₃)₂)– and contains no carbon–carbon double bonds, which contributes to its excellent chemical and oxidative stability.
Based on molecular weight, polyisobutylene polymer can be classified into:
- Low molecular weight PIB (approximately 350–3,500),
- Medium molecular weight PIB (about 10,000–100,000), and
- High molecular weight polyisobutylene (100,000 up to several million).
Depending on the molecular weight, the physical form of PIB resin ranges from viscous liquids to rubber-like elastomers.
Polyisobutylene (PIB) Uses
Polyisobutylene (PIB) exhibits excellent aging resistance, ozone resistance, electrical insulation properties, and outstanding gas impermeability, making it a key material in many industrial and specialty applications. It is widely used in lubricating oil additives, adhesives, sealants, cosmetic formulations, and food packaging materials, where long-term stability and safety are critical.
Conclusion
PIB polymer (Polyisobutylene) is a versatile and high-performance industrial polymer widely used in lubricants, adhesives, sealants, and rubber compounds.
When sourcing PIB raw materials, partnering with a reliable PIB polymer supplier and manufacturer is essential. Tianjin Gnee Biotech Co. Ltd., with its own production facilities and strict quality control systems, provides consistent product quality and the ability to offer custom PIB molecular weight solutions to meet diverse industrial requirements, ensuring long-term supply stability for global markets.