公开(公告)号：US20210340327A1

公开(公告)日：2021-11-04

申请号：US17375685

申请日：2021-07-14

Applicant: KANEKA CORPORATION

Inventor： Takefumi Furuta ,  Yoshio Furukawa ,  Rikio Yokota ,  Yuki Kubota ,  Yuichi Ishida

IPC: C08G73/12 ,  C08J5/24 ,  C09D179/08

Abstract: In order to provide an imide oligomer or the like which can give a cured product exhibiting excellent thermal oxidative stability, an imide oligomer is obtained by reacting together an aromatic tetracarboxylic acid component, an aromatic diamine component, and a terminal capping agent. The imide oligomer contains, in a specified proportion: a compound containing a phenylethynyl group; and a compound containing no carbon-carbon unsaturated bond capable of an addition reaction. One or each of the aromatic tetracarboxylic acid component and the aromatic diamine component contains a component having an asymmetrical and non-planar structure.

公开(公告)号：US10526450B2

公开(公告)日：2020-01-07

申请号：US16184176

申请日：2018-11-08

Applicant: KANEKA CORPORATION

Inventor： Takefumi Furuta ,  Masahiko Miyauchi ,  Rikio Yokota ,  Yuichi Ishida

IPC: C08G73/10 ,  C08J5/24 ,  C07D401/14 ,  C07D487/04 ,  C09D179/08 ,  C09D7/20

Abstract: A terminally modified imide oligomer is represented by a specific formula including a 2-phenyl-4,4′-diaminodiphenylether residue or a 4-phenoxy-1,3-diaminobenzene residue. A varnish is obtained by dissolving the terminally modified imide oligomer. A cured product is obtained by heat-curing the terminally modified imide oligomer, and a film including the cured product has a tensile elongation at break of 10% or more. An imide prepreg is obtained by impregnating fibers with the varnish and then drying the impregnated fibers. A fiber-reinforced composite material is obtained by layering and then heat-curing the imide prepreg.