	US 12,241,005 B2
	Laminated body
Shinya Watanabe, Tsuruga (JP); Ai Koganemaru, Otsu (JP); Hisao Okumura, Tokyo (JP); Tomoya Sugiki, Tokyo (JP); Takahiro Ito, Nagoya (JP); and Makoto Imahori, Nagoya (JP)
Assigned to TOYOBA CO., LTD., Osaka (JP); and TOAGOSEI CO., LTD., Tokyo (JP)
Appl. No. 17/641,765
Filed by TOYOBO CO., LTD., Osaka (JP); and TOAGOSEI CO., LTD., Tokyo (JP)
PCT Filed Sep. 10, 2020, PCT No. PCT/JP2020/034315 § 371(c)(1), (2) Date Mar. 9, 2022, PCT Pub. No. WO2021/059998, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-176236 (JP), filed on Sep. 26, 2019.
Prior Publication US 2022/0332980 A1, Oct. 20, 2022
Int. Cl. C09J 7/29 (2018.01); B32B 7/12 (2006.01); B32B 15/08 (2006.01); B32B 37/12 (2006.01); C09J 7/30 (2018.01); C09J 7/35 (2018.01); C09J 123/26 (2006.01)

CPC C09J 7/29 (2018.01) [B32B 7/12 (2013.01); B32B 15/08 (2013.01); B32B 37/12 (2013.01); C09J 7/30 (2018.01); C09J 7/35 (2018.01); C09J 123/26 (2013.01); C09J 2301/124 (2020.08); C09J 2423/10 (2013.01); C09J 2425/00 (2013.01)]

20 Claims

1. A laminated body comprising:

a resin substrate including a first surface and a second surface which is opposite to the first surface;

a first easily adhesive layer provided on the first surface of the resin substrate;

a first adhesive resin layer provided on a surface of the first easily adhesive layer on a side opposite to the resin substrate;

a second easily adhesive layer provided on the second surface of the resin substrate; and

a second adhesive resin layer provided on a surface of the second easily adhesive layer on a side opposite to the resin substrate,

wherein

the first adhesive resin layer contains a first polyolefin having at least one member selected from the group consisting of an acidic group and an acid anhydride group and having an acid value of 0.01 mgKOH/g to 6.5 mgKOH/g;

the second adhesive resin layer contains a second polyolefin having at least one member selected from the group consisting of an acidic group and an acid anhydride group and having an acid value of 0.01 mgKOH/G to 6.5 mgKOH/g;

a solubility parameter of the first easily adhesive layer is larger than a solubility parameter of the first adhesive resin layer and smaller than a solubility parameter of the resin substrate;

an absolute value of a difference between the solubility parameter of the first easily adhesive layer and the solubility parameter of the first adhesive resin layer is 3.0 (J/cm³)^1/2or less;

a solubility parameter of the second easily adhesive layer is larger than a solubility parameter of the second adhesive resin layer and smaller than the solubility parameter of the resin substrate;

an absolute value of a difference between the solubility parameter of the second easily adhesive layer and the solubility parameter of the second adhesive resin layer is 3.0 (J/cm³)^1/2or less; and

the laminated body is used for bonding a metal member having a ratio of a dipole term in surface free energy of 0.01% to 5.0%.