This contribution is directed to illustrate the potential of reactive
blending, hold up polypropylene modification as an example. Formulatio
n rules and process technology to create PP-PA-alloys, as well as the
property profiles of the resulting products are described. A separate
chapter is dedicated to functionalisation of polypropylene by mainchai
n-grafting of selected linkage molecules, to widen the range of applic
ation of this low-cost polymer.