Polyethylene-graft-maleic anhydride is widely used as a compatibilizer in polymer blends and composites. It enhances the adhesion between polyethylene and other materials, such as glass fibers, metals, or polar polymers, by introducing reactive maleic anhydride groups. This makes it valuable in improving the mechanical properties and durability of composite materials in industries like automotive, packaging, and construction.

In the adhesive industry, it serves as a key component in formulations for bonding polyethylene to substrates that are otherwise difficult to adhere to, such as metals or polar plastics. Its ability to improve interfacial interactions makes it essential for creating strong and durable bonds.

Additionally, it is utilized in coatings and films to enhance surface properties, such as printability and paint adhesion, by modifying the surface energy of polyethylene-based materials. This is particularly useful in packaging applications where functional surfaces are required.

In the field of cable and wire insulation, it improves the compatibility of polyethylene with other materials, ensuring better performance and longevity of the insulation layers.

Overall, its versatility in modifying and enhancing material interactions makes it a critical additive in various industrial applications.