Properties of Polyisobutylene
Polyisobutylene (PIB), abbreviated as polyisobutylene, is a linear saturated polymer obtained through the cationic polymerization of isobutylene. Due to its unique chemical stability and physical properties, it finds extensive applications across numerous industries. This substance is colorless, odorless, and non-toxic, exhibiting resistance to heat, oxygen, ozone, chemicals, ultraviolet radiation, and acids/alkalis. Additionally, polyisobutylene exhibits high volume resistivity, a low coefficient of thermal expansion, excellent electrical insulation properties, and the advantage of leaving no carbon residue upon pyrolysis.
Physically, polyisobutylene can exist as a viscous liquid or an elastic rubber-like substance, primarily determined by its molecular weight. Products with molecular weights below 30,000 are typically liquid, while those with higher molecular weights are solid. Due to its non-toxic nature, polyisobutylene also plays a significant role as an oil phase component in cosmetics and pharmaceuticals.
What is PIB material (CAS 9003-27-4) used for?
- Petroleum Additives: Polyisobutylene (PIB) serves as a lubricant additive to enhance lubricant performance.
- Adhesives: PIB exhibits excellent adhesion and elasticity, making it suitable for manufacturing pressure-sensitive adhesives, sealants, and similar products.
- Wires and Cables: Polyisobutylene can be used to manufacture insulation layers for wires and cables, enhancing electrical insulation properties.
- Plasticizer: Polyisobutylene (PIB) can serve as a plasticizer for plastics, improving processing properties and flexibility.
- Other Applications: Polyisobutylene (PIB) is also used in the production of rubber products, coatings, inks, and other fields.
What are the hazards of polyisobutylene (CAS 9003-27-4)?
Symptoms/effects : Not expected to present a significant hazard under anticipated conditions of normal use.
Symptoms/effects after inhalation : Overexposure to vapours may result in cough.
Symptoms/effects after skin contact : Heated product causes burns.