公开(公告)号：US20240166799A1

公开(公告)日：2024-05-23

申请号：US18066389

申请日：2022-12-15

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jaewoo KIM ,  Sungmin JUNG ,  Yong Seok CHOI ,  Jong Hyuk PARK ,  Min PARK ,  Jun Woo JEON ,  Yong Chae JUNG ,  YOONSANG KIM ,  Han Gyeol JANG ,  Jun Young JO

IPC: C08G59/40 ,  C07D233/58

CPC classification number: C08G59/4042 ,  C07D233/58

Abstract: The present exemplary embodiments may provide a latent curing agent including an imidazole-based compound protected by a Diels-Alder reaction between a diene and a dienophile.

公开(公告)号：US20220162223A1

公开(公告)日：2022-05-26

申请号：US17228109

申请日：2021-04-12

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jaewoo KIM ,  Jun Young JO ,  Yong Chae JUNG ,  Yong Seok CHOI ,  Han Gyeol JANG ,  Sungmin JUNG

IPC: C07D491/107 ,  C09K9/02 ,  C08L83/04

Abstract: The present disclosure relates to a spiropyran composite having improved mechano-sensitivity, a method for manufacturing the same, and a chromic article including the same. Particularly, the spiropyran composite is obtained by bonding spiropyran covalently to a polymer, an inorganic material or a mixture thereof to form spiropyran composite, and impregnating the spiropyran composite with a sensitivity-enhancing agent for a suitable time through a wet infiltration process to form non-polar environment at the inner part of the spiropyran composite, to cause pre-stretch and to increase a change in color or fluorescence in response to force, stress or strain, thereby providing significantly improved mechano-sensitivity. In addition, a wet filtration process is used and no expensive equipment is required to simplify the process. Further, the process can be performed rapidly within several minutes to reduce the processing time.