Patent ID: 8207072

Claim:
An adhesive resin composition, comprising, by weight: 10-99.5% of a resin ingredient (A), which is a product of a successive propylene polymerization in the form of a polymer comprising 10-60% by weight of (a1) a propylene homopolymer or a copolymer of propylene and at least one second α-olefin comprising 2-8 carbon atoms, and 40-90% by weight of (a2) a copolymer of propylene, ethylene, and optionally at least one third α-olefin comprising 2-8 carbon atoms, obtained by polymerizing to obtain (a1) and then further polymerizing to obtain (a2); 0.5-30% of a resin ingredient (B), which is a propylene homopolymer or a propylene copolymer which each has been modified with at least one modifier selected from the group consisting of an unsaturated carboxylic acid and a derivative thereof, so that the content of the component derived from the unsaturated carboxylic acid and/or derivative thereof is 0.01% by weight or higher; and 0-89.5% of a resin ingredient (C), which is an olefin resin, wherein a content by weight, based on the resin ingredient (A), of (1) room-temperature-xylene solubles derived from component (a1)) is 1-20%, (2) room-temperature-xylene insolubles derived from component (a2) is lower than 20%, (3) room-temperature-xylene solubles derived from component (a2) is 10-60%, and wherein (4) the room-temperature-xylene solubles derived from component (a2) have a content of α-olefins excluding propylene of 20% by weight or higher.