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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11724848 B1

PDFFull Text
Date of Patent:
Aug. 15, 2023

Filed:

Feb. 02, 2021

Multilayer container, method for manufacturing same, and method for manufacturing reclaimed polyester

Applicant:

Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;

Inventors:

Kosuke Otsuka, Kanagawa, JP;

Takumi Yamada, Kanagawa, JP;

Masayuki Daito, Kanagawa, JP;

Assignee:

Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;

Attorney:

Fitch, Even, Tabin & Flannery LLP

Primary Examiner:

Michael C Miggins

Int. Cl.
CPC ...
B65D 1/02 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 27/20 (2006.01); C08G 63/183 (2006.01); C08G 69/26 (2006.01); B32B 27/08 (2006.01);
U.S. Cl.
CPC ...
B65D 1/0215 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); C08G 63/183 (2013.01); C08G 69/26 (2013.01); B32B 2250/02 (2013.01); B32B 2250/03 (2013.01); B32B 2250/04 (2013.01); B32B 2250/05 (2013.01); B32B 2250/24 (2013.01); B32B 2305/70 (2013.01); B32B 2307/412 (2013.01); B32B 2307/7163 (2013.01); B32B 2307/7244 (2013.01); B32B 2367/00 (2013.01); B32B 2377/00 (2013.01); B32B 2439/60 (2013.01); C08G 2230/00 (2013.01); C08G 2390/00 (2013.01);
Abstract

Provided is a multilayer container including: a polyester layer containing a polyester resin (X); and a polyamide layer containing a polyamide resin (Y) and a yellowing inhibitor (A). The 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, and the content of the yellowing inhibitor (A) is from 1 to 30 ppm relative to the total amount of all polyamide layers and all polyester layers. Also provided are a method for manufacturing the multilayer container, and a method for manufacturing a recycled polyester, the method thereof including a step of recovering polyester from the multilayer container.

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