公开(公告)号：US20200208029A1

公开(公告)日：2020-07-02

申请号：US16639115

申请日：2018-08-03

Applicant: Sunstar Engineering Inc.

Inventor： Kazunobu TAKAMI ,  Takatomi NISHIDA

IPC: C09J163/04 ,  C08G59/24 ,  C08G59/68 ,  C08G59/50

Abstract: The present invention provides an epoxy resin-based curable composition which may be used as a structural adhesive for an automobile. Particularly, the present invention provides an epoxy resin-based curable composition having excellent low-temperature curability, while maintaining good storage stability and good adhesion.The present invention relates to a curable composition comprising an epoxy resin, a urea-based curing accelerator (A) and an amine-based curing agent (B) having a pyrazine ring.

公开(公告)号：US20230013387A1

公开(公告)日：2023-01-19

申请号：US17618939

申请日：2020-06-26

Applicant: Sunstar Engineering Inc.

Inventor： Takatomi NISHIDA ,  Kazuaki HANASAKI ,  Takashi MINAMIHORI

IPC: C08L63/00 ,  C08L33/08 ,  C08G18/80 ,  C08G59/50 ,  C09J175/08 ,  C08G18/32 ,  C08G18/58 ,  C08G18/48 ,  C08G18/76 ,  C08G18/10 ,  C08G18/64 ,  C08G18/28

Abstract: Disclosed is a low-temperature curable composition comprising: (A) at least one curable component selected from an epoxy resin and a blocked isocyanate, and (B) an amine-based latent curing agent, wherein a temperature peak of a reaction of the amine-based latent curing agent (B) with a bisphenol A type epoxy resin is between 70° C. and 110° C.

公开(公告)号：US20190062611A1

公开(公告)日：2019-02-28

申请号：US16109917

申请日：2018-08-23

Applicant: Sunstar Engineering Inc. ,  Mazda Motor Corporation

Inventor： Takatomi NISHIDA ,  Shohei YANAGISAWA ,  Katsuya HIMURO ,  Kenichi YAMAMOTO ,  Motoyasu ASAKAWA ,  Tomoya YOSHIDA

IPC: C09J163/00 ,  C09J11/08

CPC classification number: C09J163/00 ,  C09J11/08 ,  C08L63/00

Abstract: The present invention provides a one-component type thermosetting adhesive composition used as an automotive structural adhesive having high damping performance without reducing adhesive strength and having excellent low-temperature curability and a body structure for vehicle, on which the one-component type thermosetting adhesive composition is applied. The present invention relates to a one-component type thermosetting adhesive composition comprising an epoxy resin and an amine-based latent curing agent, wherein the epoxy resin comprises: (1) a dibasic acid ester-based epoxy resin, (2) a butadiene-acrylonitrile copolymer modified epoxy resin, and (3) an unmodified bisphenol A type epoxy resin, and wherein a thermally cured product formed from the composition has: a loss tangent tan δ at 23° C. of not less than 0.2 as a damping performance, and a Young's modulus of not less than 50 MPa, and a body structure for vehicle, on which the one-component type thermosetting adhesive composition is applied.