公开(公告)号：US11884806B2

公开(公告)日：2024-01-30

申请号：US16432288

申请日：2019-06-05

申请人： Mitsubishi Chemical Corporation

发明人： Kota Inoue ,  Honoka Hashimoto ,  Nobuaki Sato

IPC分类号： C08L29/04 ,  C08K3/38 ,  C08K5/00 ,  C08K5/01 ,  C08K5/09 ,  C08F8/00

CPC分类号： C08L29/04 ,  C08F8/00 ,  C08K3/38 ,  C08K5/005 ,  C08K5/01 ,  C08K5/09 ,  C08K2003/387

摘要： A resin composition contains an ethylene-vinyl alcohol copolymer, wherein the ratio (Y/Z) of a lactone ring content (Y) to the sum (Z) of a carboxylic acid content (X) and the lactone ring content (Y) in terminal structures of the ethylene-vinyl alcohol copolymer is not less than 55 mol %, and at least one of a cinnamic acid component, a lubricant, a boron compound, and a conjugated polyene compound is present as a thermally stabilizing substance in a predetermined proportion based on the weight of the resin composition. Therefore, the resin composition is excellent in high-temperature thermal decomposition suppressing effect and thermal stability, and is free from odor emanation and coloration even if being processed at a higher temperature.

公开(公告)号：US11292860B2

公开(公告)日：2022-04-05

申请号：US16434554

申请日：2019-06-07

申请人： MITSUBISHI CHEMICAL CORPORATION

发明人： Kota Inoue ,  Honoka Hashimoto ,  Nobuaki Sato

IPC分类号： C08F210/02 ,  C08F216/06 ,  C08F8/16 ,  C08J3/12 ,  C08L29/04 ,  B32B27/28

摘要： Ethylene-vinyl alcohol copolymer pellets comprise an ethylene-vinyl alcohol copolymer and water, and have a water content of not higher than 0.5 wt. %, wherein the ratio (Y/Z) of a lactone ring content (Y) to the sum (Z) of a carboxylic acid content (X) and the lactone ring content (Y) in terminal structures of the ethylene-vinyl alcohol copolymer is not less than 60 mol %. The pellets are excellent in high-temperature thermal decomposition-suppressing effect and thermal stability, and are free from odor emanation and coloration even if being processed at a higher temperature.

公开(公告)号：US11225537B2

公开(公告)日：2022-01-18

申请号：US16065323

申请日：2016-12-19

申请人： MITSUBISHI CHEMICAL CORPORATION

发明人： Nobuaki Sato

IPC分类号： C08F210/02 ,  C08F216/06 ,  C08F8/12 ,  C08F218/08

摘要： The present invention provides an ethylene-vinyl alcohol copolymer which can be melt-molded at lower temperatures than conventional ethylene-vinyl alcohol copolymers to give molded objects that are inhibited from suffering undesirable coloration or having fish-eyes and that have excellent gas barrier properties. The ethylene-vinyl alcohol copolymer of the invention has a carboxylic acid ester group at a polymer terminal.