Patent ID: 6265455
Filing Date: 2001-07-24
Classification: C08J,C08K,C08L

Abstract:
A foamed ionomer polymer comprising metal ions pertaining to the IA, IIA or IIB Group of the Periodic Table, and a crystalline or semicrystalline graft copolymer where the backbone polymer chain of the graft copolymer is a propylene homopolymer or a random copolymer of propylene with a comonomer selected from ethylene or C.sub.4 -C.sub.10 .alpha.-olefins or mixtures thereof, the comonomer being in an amount of less than 20% by weight with respect to the weight of the copolymer, and the grafted chains comprise monomers containing at least one functional group selected from carboxylic groups and their derivatives.