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公开(公告)号：US20210087391A1
公开(公告)日：2021-03-25
申请号：US16635430
申请日：2018-06-29
发明人： Kosuke OTSUKA , Takafumi ODA
摘要： An easily tearable film includes polyamide resin components including more than 20 parts by mass and 70 parts by mass or less of a semi-aromatic polyamide resin A and less than 80 parts by mass and 30 parts by mass or more of an aliphatic polyamide resin B; wherein the semi-aromatic polyamide resin A is constituted of a diamine-derived constituent unit and a dicarboxylic acid-derived constituent unit; 60 mol % or more of the diamine-derived constituent units are derived from metaxylylenediamine; 60 mol % or more of the dicarboxylic acid-derived constituent units are derived from an α,ω-linear aliphatic dicarboxylic acid having from 4 to 10 carbons; and the molar concentration of phosphorus atoms, the total molar concentration of alkali metal atoms and the total molar concentration of alkaline earth metal atoms, and Mn of the semi-aromatic polyamide resin satisfy predetermined relationships.
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公开(公告)号：US20230227608A1
公开(公告)日：2023-07-20
申请号：US18021796
申请日：2021-06-09
发明人： Kosuke OTSUKA , Yuya OKAJIMA
IPC分类号： C08G69/26
CPC分类号： C08G69/26
摘要： Provided is a polyamide resin having a low mass loss at a temperature slightly higher than the melting point. The polyamide resin includes diamine-derived structural units and dicarboxylic acid-derived structural units, and of the diamine-derived structural units, from 70 to 97 mol % are derived from p-benzenediethanamine and from 3 to 30 mol % are derived from a diamine represented by formula (1). 50 mol % or more of the dicarboxylic acid-derived structural units are derived from an aromatic dicarboxylic acid.
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3.发明申请公开(公告)号：US20180201744A1
公开(公告)日：2018-07-19
申请号：US15743973
申请日：2016-07-07
发明人： Kosuke OTSUKA , Tomonori KATO
摘要： Provided is a stretched film stretched stretchable to a high draw ratio a method for manufacturing the stretched film, and, a polyamide resin composition used for manufacturing the stretched film. The stretched film containing 0.5 to 15 parts by weight of a compound represented by Formula (1) per 100 parts by weight of a polyamide resin, wherein the polyamide resin is composed of a structural unit derived from diamine and a structural unit derived from dicarboxylic acid; 50% by mole or more of the structural unit derived from diamine is derived from xylylenediamine, and 50% by mole or more of the structural unit derived from dicarboxylic acid is derived from a straight-chain aliphatic α,ω-dicarboxylic acid having 4 to 20 carbon atoms: wherein R1 represents an alkyl group having 1 to 10 carbon atoms, R2 represents an alkyl group having 2 to 12 carbon atoms, and n represents an integer of 1 to 3.
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公开(公告)号：US20230227607A1
公开(公告)日：2023-07-20
申请号：US18021791
申请日：2021-06-09
发明人： Kosuke OTSUKA , Yuya OKAJIMA
IPC分类号： C08G69/26
CPC分类号： C08G69/26
摘要： Provided is a polyamide resin having a high glass transition temperature and a low water absorption rate and from which a molded article that exhibits minimal deformation after water absorption is obtained. The polyamide resin includes diamine-derived structural units and dicarboxylic acid-derived structural units. More than 30 mol% of the diamine-derived structural units are derived from a diamine represented by the following formula, and more than 30 mol% of the dicarboxylic acid-derived structural units are derived from an aromatic dicarboxylic acid:
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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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公开(公告)号：US20210347984A1
公开(公告)日：2021-11-11
申请号：US17277692
申请日：2019-09-18
发明人： Kosuke OTSUKA , Takafumi ODA
摘要： Provided is a stretched body having a high barrier property under high humidity, a PET bottle, and a method for producing a container. The stretched body of a composition containing a semi-aromatic polyamide resin and plate-shaped talc having an aspect ratio of more than 18, a content of the plate-shaped talc having an aspect ratio of more than 18 in the composition is from 3.0 to 55.0 mass % when a total content of the semi-aromatic polyamide resin and the plate-shaped talc having an aspect ratio of more than 18 is 100 mass %.
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8.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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公开(公告)号：US20210355277A1
公开(公告)日：2021-11-18
申请号：US17277698
申请日：2019-09-18
发明人： Kosuke OTSUKA , Takafumi ODA
IPC分类号： C08G69/26 , C08G69/28 , C08K7/00 , C08K3/34 , C08L77/06 , C08J5/18 , B65D65/40 , B32B27/34 , B32B27/20 , B32B27/32 , B32B7/12 , B32B27/08 , B32B1/02 , B32B27/10 , B32B29/06 , B32B27/06 , B32B5/18
摘要： Provided are a resin composition having excellent oxygen barrier property under high humidity as a novel resin material, a molded body, a method for producing a molded body, and a method for producing a pellet using the resin composition. The resin composition includes a resin component and a plate-shaped talc having an aspect ratio of more than 18, 80 mass % of the resin component comprising a barrier resin having an oxygen transmission coefficient of 5.0 cc·mm/(m2·day·atm) or less as measured according to ASTM D3985 at a relative humidity of 60% and a temperature of 23° C., and a content of the plate-shaped talc being from 3.0 to 55.0 mass % when a total of the barrier resin and the plate-shaped talc is 100 mass %.
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公开(公告)号：US20210102065A1
公开(公告)日：2021-04-08
申请号：US16635445
申请日：2018-06-29
发明人： Kosuke OTSUKA , Kaname SATO , Takafumi ODA
摘要： An easily tearable film with excellent linear cuttability, as well as a multilayer film, a packaging material, and a container are provided. The easily tearable film is a polyamide resin film including polyamide resin components including more than 20 parts by mass and 70 parts by mass or less of a semi-aromatic polyamide resin A and less than 80 parts by mass and 30 parts by mass or more of an aliphatic polyamide resin B; wherein the semi-aromatic polyamide resin A is constituted of a diamine-derived constituent unit and a dicarboxylic acid-derived constituent unit; 60 mol % or more of the diamine-derived constituent units are derived from metaxylylenediamine; 60 mol % or more of the dicarboxylic acid-derived constituent units are derived from an α,ω-linear aliphatic dicarboxylic acid having from 4 to 10 carbons; and the polyamide resin film is stretched, the polyamide resin film having an area fraction corresponding to the semi-aromatic polyamide resin A, as observed in secondary electron image observation, of 9.8% or more after plane ion milling of a cross section of the polyamide resin film in the TD direction.
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