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公开(公告)号：US20230123413A1
公开(公告)日：2023-04-20
申请号：US17800752
申请日：2021-02-25
发明人： Kosuke OTSUKA , Masayuki DAITO , Takumi YAMADA
摘要： Provided is a multilayer container including a polyester layer containing a polyester resin (X), and a polyamide layer containing a polyamide resin (Y), a yellowing inhibitor (A), and an oxidation accelerator (B). The content of the polyamide resin (Y) is from 0.05 to 7.0 mass% relative to the total amount of all polyamide layers and all polyester layers. The yellowing inhibitor (A) is a dye, 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.
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公开(公告)号：US20230102641A1
公开(公告)日：2023-03-30
申请号：US17798818
申请日：2021-02-02
发明人： Kosuke OTSUKA , Takumi YAMADA , Masayuki DAITO
摘要： 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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3.发明公开公开(公告)号：US20230356450A1
公开(公告)日：2023-11-09
申请号：US18021973
申请日：2021-07-30
发明人： Masayuki DAITO , Kosuke OTSUKA , Takumi YAMADA
IPC分类号： B29C45/18 , C08G63/688 , C08K5/00 , C08G63/183 , B29C49/00 , C08G69/26 , C08K5/098 , C08J11/06
CPC分类号： B29C49/0005 , B29C45/18 , C08G63/183 , C08G63/6886 , C08G69/26 , C08J11/06 , C08K5/0041 , C08K5/098 , B29K2105/0032 , C08G2230/00
摘要： Provided is a single-layer container containing a polyester resin (X), a polyamide resin (Y), a blue colorant (A), and a red colorant (B). The content of the polyamide resin (Y) is from 0.05 to 7.0 mass%, and the content of the blue colorant (A) is from 1 to 40 ppm.
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4.发明公开公开(公告)号：US20230303299A1
公开(公告)日：2023-09-28
申请号：US18022034
申请日：2021-08-11
发明人： Kosuke OTSUKA , Masayuki DAITO , Takumi YAMADA
CPC分类号： B65D65/40 , B29C49/06 , B29C49/22 , B32B27/20 , B32B27/34 , B32B27/36 , B32B27/08 , B29L2031/712
摘要： Provided is a multilayer container having 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 the 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. An L* of the multilayer container is 87.5 or greater.
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