Modified polyolefin resin

Abstract

A modified polyolefin resin may be capable of obtaining an intended adhesion strength regardless of a kind of a base resin thereof even when graft modification is carried out by using an α,β-unsaturated carboxylic acid derivative having a cyclic structure. Such a modified polyolefin resin may be a modified product of a polyolefin resin and satisfying (A) and (B): (A): a modifying component includes an α,β-unsaturated carboxylic acid derivative having a cyclic structure; and (B): a ring-opening degree expressed by formula (1) is 40 or more. Ring-opening degree=modification degree K×ring-opening rate R  (1): wherein, in formula (1), the modification degree K is a grafting weight (% by weight) of the α,β-unsaturated carboxylic acid derivative, and the ring-opening rate R is a ring-opening rate (%) of the cyclic structure in the α,β-unsaturated carboxylic acid derivative.

Dependencies are inferred from the claim text.