PURPOSE: To provide an ethylenic copolymer mixture composed of three specific kinds of ethylenic copolymers and capable of giving a crosslinked polymer having excellent heat-resistance, moldability, adhesivity to metals, etc., and electrical insulation property.
CONSTITUTION: The objective copolymer mixture is composed of (A) a copolymer composed of at least ethylene and 0.3W15mol.% of an α,β-unsaturated dicarboxylic acid anhydride and preferably containing a radically polymerizable monomer having polar group (preferably methyl methacrylate), (B) a copolymer of at least ethylene and 0.3W10mol.% of a radically copolymerizable unsaturated monomer having epoxy group (e.g. glycidyl acrylate) and (C) a saponified product of a copolymer of ethylene and 0.3W30mol.% of vinyl acetate (preferably having a saponification degree of ≥15%). The amount of the component A is 5W95wt.% based on the sum of A and B and the molar ratio of the acid anhydride group in the component A to the OH group in the component C is 1:0.05W1.5.
MOGI YOSHIHIRO
KUROSAWA HAYASHI
