公开(公告)号：US20220010048A1

公开(公告)日：2022-01-13

申请号：US17296428

申请日：2019-11-26

Applicant: NIPPON PAPER INDUSTRIES CO., LTD.

Inventor： Isamu ONO ,  Kei KONDO ,  Koji KIMURA ,  Takato TAKENAKA ,  Yuuko NAHARA ,  Shunji SEKIGUCHI

IPC: C08F255/04

Abstract: A modified polyolefin resin having an intended adhesion strength to various substrates even when graft modification may be carried out by using an α,β-unsaturated carboxylic acid derivative having a cyclic structure. The modified polyolefin resin may be a modified product of a polyolefin resin and satisfies conditions (A) to (C): condition (A)—a modifying component includes an α,β-unsaturated carboxylic acid derivative having a cyclic structure; condition (B)—a ring-opening degree expressed by formula (1) is 40 or more; and condition (C)—the polyolefin resin includes an ethylene structural unit, ring-opening degree=modification degree K×ring-opening rate R  (1) wherein, in the formula (1), the modification degree K is a grafting weight (wt. %) 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.

公开(公告)号：US20220017671A1

公开(公告)日：2022-01-20

申请号：US17413697

申请日：2019-11-26

Applicant: NIPPON PAPER INDUSTRIES CO., LTD.

Inventor： Isamu ONO ,  Kei KONDO ,  Koji KIMURA ,  Takato TAKENAKA ,  Yuuko NAHARA ,  Shunji SEKIGUCHI

IPC: C08F255/08

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.