IP Library › Granted Patent US 12679917
Granted Patent B2
US 12679917 · App. 18/038,683 · Granted Jul 14, 2026

Graft-modified product, adhesive, olefin resin composition, and laminate

Inventors: Tatsuya Ichikawa (Ichihara, JP); Katsuyoshi Harada (Chiba, JP); Yusuke Mizobuchi (Ichihara, JP); Yuuya Goto (Ichihara, JP)
Assignee: Mitsui Chemicals, Inc.
C08F255/02B32B27/08B32B27/308B32B27/36B32B2250/03B32B2250/24B32B2250/40B32B2323/046B32B2327/18
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Quick Facts
Patent No.
US 12679917
App. No.
18/038,683
Granted
Jul 14, 2026
Kind
B2
Abstract

One embodiment of the present invention relates to a graft-modified product, an adhesive, an olefin resin composition, or a laminate, and the graft-modified product is a graft-modified product of at least one base polymer selected from polyolefins by a carbodiimide monomer having a carbodiimide group and a polymerizable double bond.

Claims (16)

1 . A graft-modified product of at least one base polymer selected from polyolefins by a carbodiimide monomer having a carbodiimide group and a polymerizable double bond, wherein a graft ratio in the graft-modified product is 0.3 to 7% by mass.

2 . The graft-modified product according to claim 1 , wherein the carbodiimide monomer is a carbodiimide monomer represented by formula (1):

wherein R 1 is a hydrogen atom or a methyl group, and R 2 is a hydrocarbon group optionally having a substituent.

3 . The graft-modified product according to claim 2 , wherein R 2 is an alicyclic ring-containing aliphatic hydrocarbon group having 4 to 20 carbon atoms.

4 . The graft-modified product according to claim 1 , wherein the carbodiimide monomer is a carbodiimide monomer represented by formula (2):

wherein R 3 is a hydrogen atom or a methyl group, R 4 is a hydrocarbon group optionally having a substituent, and m is an integer of 2 or more.

5 . The graft-modified product according to claim 4 , wherein R 3 is a methyl group, R 4 is a branched and ring-free alkyl group, and m is 2.

6 . The graft-modified product according to claim 1 , wherein the base polymer is a polymer being free of at least one active hydrogen-containing group selected from a carboxy group, an acid anhydride group, an amino group, a hydroxy group, and a thiol group.

7 . The graft-modified product according to claim 1 , wherein the polyolefin is at least one selected from an ethylene polymer and a propylene polymer.

8 . An olefin resin composition comprising the graft-modified product according to claim 1 and one or more olefin polymers.

9 . An adhesive comprising the graft-modified product according to claim 1 .

10 . A laminate comprising:

a layer (A) comprising the graft-modified product according to claim 1 ; and

a base material layer (B).

11 . The laminate according to claim 10 , wherein the base material layer (B) is a layer having a polar group.

12 . The laminate according to claim 11 , wherein the polar group is a carboxy group or a hydroxy group.