Cross-linked polyolefin mouldings prodn - by reacting polyolefin with an oxidising agent and then moulding

摘要

An opt. foamed moulding of crosslinked polyolefin is mfrd. by reacting the polyolefin with an oxidising agent (e.g. O3 or a peroxide), followed by moulding. Reaction may be effected in a fluidised (cyclone sintering) bed. A foaming agent may be employed during moulding to give an expanded article. Cross-linking is uniform and reaction occurs in mild. conditions. No degradation of polymer takes place.