Polyisobutenes are hydrocarbons with a carbon-carbon double bond. Polyisobutene is composed of long-chain hydrocarbon formed by polymerization of isobutene, and is extremely stable under normal conditions. Polyisobutene is transparent non-noxious high-consistency semi-solid polymer free of impurities.
What types of polyethylene are there?
High-Density Polyethylene
- Melting Point: Approximately 120-130 degrees Celsius.
- Molar Mass: Typically ranges from 50,000 to 200,000 g/mol.
- Density: HDPE has a density of about 0.941-0.965 g/cm³.
Low-Density Polyethylene
- Melting Point: Approximately 105-115 degrees Celsius.
- Molar Mass: Typically ranges from 20,000 to 500,000 g/mol.
- Density: LDPE has a density of about 0.910-0.940 g/cm³.
Linear Low-Density Polyethylene
- Melting Point: Approximately 120-125 degrees Celsius.
- Molar Mass: Typically ranges from 50,000 to 500,000 g/mol.
- Density: LLDPE has a density of about 0.915-0.940 g/cm³.
Polyisobutylene (CAS No. 9003-27-4) Applications
Industrial Applications:
- Rubber and Sealing Materials: Polyisobutylene (PIB) serves as the primary component of butyl rubber, used in manufacturing tire liners, hoses, seals, and shock-absorbing products due to its excellent airtightness and aging resistance.
- Adhesives and Sealants: Provides permanent bonding strength while enhancing flexibility and crack resistance. Widely used in pressure-sensitive adhesives, construction sealants, and industrial adhesives.
- Lubricant Additives: Acts as a viscosity improver, enhancing high-temperature stability and low-temperature fluidity of lubricants while reducing engine smoke emissions.
Cosmetics and Personal Care:
- Moisturizers and Lubricants: Low-molecular-weight polyisobutylene (e.g., Polybutene-1000), structurally similar to squalane, is commonly used in lipsticks, creams, and lotions. It provides a moisturizing, non-greasy feel and enhances product spreadability.
- Film Formers: Polyisobutylene (PIB) forms a protective film in skincare products, reducing moisture loss and improving skin barrier function.
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.