Polypropylene-graft-maleic anhydride is widely used as a compatibilizer in polymer blends and composites. It enhances the adhesion between polypropylene and other materials, such as glass fibers, fillers, or polar polymers, improving mechanical properties and performance.

In the automotive industry, it is employed to create lightweight, durable components by reinforcing polypropylene with fibers or fillers. It is also used in packaging materials to improve barrier properties and strength.

Additionally, it serves as an adhesion promoter in coatings and adhesives, ensuring strong bonding to polypropylene surfaces. In the textile industry, it is utilized to modify fibers for better dyeability and moisture management.

Its versatility makes it valuable in various industrial applications where enhanced material compatibility and performance are required.