公开(公告)号：EP3785909A1

公开(公告)日：2021-03-03

申请号：EP19793120.7

申请日：2019-04-22

申请人： MITSUBISHI GAS CHEMICAL COMPANY, INC.

发明人： MIYABE Takanori ,  ODA Takafumi ,  NAKAMURA Jin ,  YAMANAKA Masaki

IPC分类号： B32B27/34 ,  B32B27/00 ,  B32B27/36 ,  B65D1/02 ,  B29C49/06 ,  B29C49/22

摘要： Provided is a multilayered article and a multilayered container having excellent delamination resistance while maintaining an excellent oxygen barrier property. The multilayered article includes a polyester resin layer and a barrier layer, wherein a polyamide resin contained in the barrier layer contains from 90 to 10 parts by mass of a polyamide resin (B) per 10 to 90 parts by mass of a polyamide resin (A). In the polyamide resin (A), 70 mol% or more of structural unit derived from a diamine is derived from xylylenediamine, and over 90 mol% of structural unit derived from a dicarboxylic acid is derived from adipic acid. In the polyamide resin (B), 70 mol% or more of structural unit derived from a diamine is derived from xylylenediamine, and of structural unit derived from a dicarboxylic acid, from 30 to 65 mol% is derived from an α,ω-linear aliphatic dicarboxylic acid having from 4 to 20 carbons and from 70 to 35 mol% is derived from isophthalic acid.

公开(公告)号：EP3385074A1

公开(公告)日：2018-10-10

申请号：EP16870501.0

申请日：2016-11-22

申请人： Mitsubishi Gas Chemical Company, Inc.

发明人： NAKAMURA Jin ,  KATO Tomonori ,  SATO Kazuya

IPC分类号： B32B27/34 ,  C08L23/26 ,  C08L77/00 ,  F16L11/08

CPC分类号： B32B27/34 ,  B32B1/08 ,  B32B27/08 ,  B32B2250/24 ,  B32B2307/7242 ,  B32B2377/00 ,  B32B2597/00 ,  C08K3/041 ,  C08L23/26 ,  C08L77/00 ,  C08L77/02 ,  C08L77/06 ,  C08L2205/025 ,  F16L11/08

摘要： The present invention provides a multi-layer structure having: a polyamide layer (A) comprising a composition containing an aliphatic polyamide such as a polyamide including C10-12 lactam-derived constituent units and/or C10-12 aminocarboxylic acid-derived constituent units; and a polyamide layer (B) comprising a composition containing, in a predetermined amount ratio, an aliphatic polyamide such as a polyamide including diamine units including at least 70 mol% of xylylenediamine-derived constituent units and dicarboxylic acid units including at least 70 mol% of C4-12 aliphatic dicarboxylic acid-derived constituent units, or a polyamide including a modified polyolefin and C6-12 lactam-derived constituent units and/or C6-12 aminocarboxylic acid-derived constituent units. According to a preferred embodiment of the present invention, this multi-layer structure has excellent flexibility as well as exceptional chemical resistance and gas barrier performance.