Foamable and crosslinkable polyethylene composition, process for its production, and process for producing crosslinked polyethylene foams using said composition

摘要

A foamable and crosslinkable polyethylene composition comprising P P(A) MODIFIED POLYETHYLENE OBTAINED BY CHEMICALLY BONDING A SILANE COMPOUND CONTAINING AT LEAST ONE UNSATURATED GROUP TO POLYETHYLENE IN THE PRESENCE OF A RADICAL GENERATOR,P P(B) A ZINC SALT OF A HIGHER CARBOXYLIC ACID, ANDPP(C) A HEAT-DECOMPOSABLE BLOWING AGENT, AND INGREDIENTS (A), (B) AND (C) HAVING BEEN MELT-KNEADED WITH ONE ANOTHER AT A TEMPERATURE LOWER THAN THE DECOMPOSITION TEMPERATURE OF THE HEAT-DECOMPOSABLE BLOWING AGENT.