	US 12,338,047 B2
	Multi-layer container, method for producing same, and method for producing reclaimed polyester
Kosuke Otsuka, Hiratsuka (JP); Masayuki Daito, Hiratsuka (JP); and Takumi Yamada, Hiratsuka (JP)
Assigned to Mitsubishi Gas Chemical Company, Inc., Tokyo (JP)
Appl. No. 18/022,034
Filed by Mitsubishi Gas Chemical Company, Inc., Tokyo (JP)
PCT Filed Aug. 11, 2021, PCT No. PCT/JP2021/029631 § 371(c)(1), (2) Date Feb. 17, 2023, PCT Pub. No. WO2022/039086, PCT Pub. Date Feb. 24, 2022.
Claims priority of application No. 2020-139566 (JP), filed on Aug. 20, 2020.
Prior Publication US 2023/0303299 A1, Sep. 28, 2023
Int. Cl. B65D 65/40 (2006.01); B29C 49/06 (2006.01); B29C 49/22 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B29K 67/00 (2006.01); B29K 77/00 (2006.01); B29L 31/00 (2006.01)

CPC B65D 65/40 (2013.01) [B29C 49/06 (2013.01); B29C 49/22 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B29K 2067/00 (2013.01); B29K 2077/00 (2013.01); B29K 2995/0058 (2013.01); B29L 2031/712 (2013.01); B32B 2250/24 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/714 (2013.01); B32B 2439/00 (2013.01)]

17 Claims

1. A multilayer container comprising:

a polyester layer containing a polyester resin (X); and

a polyamide layer containing a polyamide resin (Y) and a yellowing inhibitor (A),

wherein

a content of the polyamide resin (Y) is from 0.05 to 7.0 mass % relative to a total amount of all polyamide layers and all polyester layers,

the yellowing inhibitor (A) is a dye,

the content of the yellowing inhibitor (A) is from 400 to 800 ppm relative to the polyamide layer, and

an L* value of the multilayer container is 87.5 or greater.