| abstract |
Allowing crosslinking of polyolefins prior to foamingnby increasing the viscosity of the polymeric melt, the production ofnfine-pored, closed-cell foams. Object of the inventionnwas to economically produce cross-linked foams,nthe object being to provide a suitable crosslinking agentnuse. According to the invention peroxides of the general formulanused simultaneous crosslinking and foaming, where R is anStearyl, isopropyl or 2-ethylhexyl represents. These peroxidesnhave sufficient stability during incorporation and shownhigh crosslinking efficiency. For those using peroxidesnproduced crosslinked polyolefin foams arisenextensive applications, for example as a thermal insulation and.n· Damping material. - Formula - |