Methylaluminoxane is widely used as a co-catalyst in the polymerization of olefins, particularly in the production of polyolefins like polyethylene and polypropylene. It plays a crucial role in activating metallocene catalysts, enhancing their efficiency in controlling polymer molecular weight and structure. This compound is also employed in the synthesis of specialty polymers and elastomers, where it helps achieve desired material properties such as flexibility, strength, and thermal stability. Additionally, it finds applications in the development of advanced materials for industries like packaging, automotive, and construction, contributing to the creation of high-performance plastics.