US 12,168,738 B2
Adhesive resin compositions and laminates
Akihiko Iwashita, Harrison, NY (US); Ryohei Shiga, Ichihara (JP); Motoyasu Yasui, Chiba (JP); Yoshisada Fukagawa, Ichihara (JP); Kyoko Kobayashi, Chiba (JP); and Masahiko Okamoto, Chiba (JP)
Assigned to Mitsui Chemicals, Inc., Tokyo (JP)
Appl. No. 17/419,640
Filed by MITSUI CHEMICALS, INC., Tokyo (JP)
PCT Filed Jan. 6, 2020, PCT No. PCT/JP2020/000060
§ 371(c)(1), (2) Date Jun. 29, 2021,
PCT Pub. No. WO2020/145239, PCT Pub. Date Jul. 16, 2020.
Claims priority of application No. 2019-000636 (JP), filed on Jan. 7, 2019; application No. 2019-018512 (JP), filed on Feb. 5, 2019; and application No. 2019-234236 (JP), filed on Dec. 25, 2019.
Prior Publication US 2022/0081598 A1, Mar. 17, 2022
Int. Cl. C09J 123/12 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); C09J 123/06 (2006.01); C09J 123/18 (2006.01); C09J 151/06 (2006.01)
CPC C09J 123/12 (2013.01) [B32B 7/12 (2013.01); B32B 27/08 (2013.01); C09J 123/06 (2013.01); C09J 123/18 (2013.01); C09J 151/06 (2013.01); B32B 2250/05 (2013.01); B32B 2250/24 (2013.01); B32B 2439/46 (2013.01); B32B 2439/70 (2013.01)] 21 Claims
 
1. An adhesive resin composition comprising:
a propylene polymer (A),
an ethylene polymer (B) that is a polymer with 10 mol % or less of comonomer, and
a thermoplastic resin (C) comprising a copolymer containing not less than 60 mol % and not more than 99 mol % of structural units derived from 4-methyl-1-pentene, and not less than 1 mol % and not more than 40 mol % of structural units derived from a C2-C20 α-olefin other than 4-methyl-1-pentene, the structural units derived from 4-methyl-1-pentene and the structural units derived from a C2-C20 α-olefin other than 4-methyl-1-pentene representing in total 100 mol % of the copolymer, the thermoplastic resin (C) showing a melting point Tm of not more than 199° C. or showing substantially no melting point as analyzed with a differential scanning calorimeter (DSC),
the total of the components (A), (B) and (C) taken as 100 parts by mass including 45 to 75 parts by mass of the component (A), 5 to 20 parts by mass of the component (B), and 15 to 45 parts by mass of the component (C).