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2022-07-28
The primary function of medium molecular weight polyisobutylene
Medium molecular weight polyisobutylene is an important polymer compound with numerous significant applications. Polyisobutylene is a polymer obtained through the polymerization of isobutylene monomers, and its molecular weight ranges from several thousand to several million.
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2021-11-12
In Depth Exploration: Polyisobutylene a Versatile Additive
Polyisobutylene, a polymer synthesized via cationic polymerization using isobutylene as the monomer, is a typical saturated linear polymer with a wide molecular weight range, spanning from several hundred to several million. Polyisobutylene plays an important role in various fields such as petrochemicals and rubber-plastic polymers, and is commonly used as a functional additive. Next, we will delve into the various properties and applications of polyisobutylene.
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2021-11-12
Global Research and Prospects Forecast for the Medium Molecular Weight Polyisobutylene Market
According to QYResearch’s research findings, the global market size for medium molecular weight polyisobutylene is projected to grow from USD 180 million in 2024 to USD 315 million by 2031, with a compound annual growth rate (CAGR) of 9.2%.
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2021-11-09
Based on their molecular weights, polyisobutylene can be classified into four types: low molecular weight polyisobutylene (LMPIB), medium molecular weight polyisobutylene (MMPIB), high molecular weight polyisobutylene (HMPIB), and ultra-high-molecular-weight polyisobutylene. Medium-molecular-weight polyisobutylene refers to polyisobutylene with a molecular weight ranging from 10,000 to 100,000. It boasts excellent chemical stability, outstanding electrical insulation properties, good viscoelastic performance, and high temperature resistance, making it widely used in numerous fields.
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2025-04-21
Introduction to Medium-Molecular-Weight Polyisobutylene Products (Industrial Grade)
Medium-molecular-weight polyisobutylene is a colorless or slightly yellowish, transparent, semi-solid substance at room temperature. It is non-toxic and odorless, and exhibits excellent chemical stability as well as resistance to heat, ozone, acids, bases, ultraviolet radiation, and weathering. It has a high volume resistivity and a low coefficient of thermal expansion; it contains no dielectric materials and boasts outstanding electrical insulation properties. When heated, it decomposes without leaving any residues, and it demonstrates good compatibility with polyethylene, cycloalkane oils, paraffin wax, petroleum resins, and other substances. It is soluble in organic solvents such as gasoline and benzene, but insoluble in water and alcohol-based solvents.
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2025-04-21
Application of Polyisobutylene in Rubber-Based Adhesives and Sealants
Polyisobutylene can be used in adhesives and sealant formulations. Its share of global total consumption is approximately 13% to 15%. Polyisobutylene is particularly well-suited for environments that are sensitive to moisture and require water-insolubility. Typically, low-molecular-weight polyisobutylene is employed as a tackifier or plasticizer, whereas medium- and high-molecular-weight polyisobutylene is used to adjust elasticity, elongation, cohesion, and air tightness. Polyisobutylene products exhibit superior aging resistance compared to rubber-based products and maintain their tackiness over time, making them suitable for surfaces to which other polymers cannot adhere.
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