ADHESIVE RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide an adhesive resin composition which can not only decrease internal stress of the interface between a metal and an adhesive layer thereby improving cathodic peeling but also enhance adhesion strength, especially an adhesive resin composition improved in cathodic peeling and adhesion strength in a high temperature range where a polypropylene is used as a covering resin. SOLUTION: There is provided a resin composition comprising a polypropylene having a flexural stiffness at 23 deg.C of at least 400 MPa (component (A)) and a copolymer elastomer of propylene with anα-olefin containing 50-90 wt.% of propylene (component (B)), wherein the wt. ratio of the component (A) to the component (B) is in the range of 50/50 to 95/5 and at least one of the components (A) and (B) contains a product modified with an unsaturated carboxylic acid or an anhydride thereof so that the content of the unsaturated carboxylic acid or the anhydride thereof is at least 0.01 wt.% based on the total amount of the components (A) and (B).