公开(公告)号：US20220373406A1

公开(公告)日：2022-11-24

申请号：US17773424

申请日：2020-11-11

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Jeyoung PARK ,  Sung Yeon HWANG ,  Dong Yeop OH ,  Sejin CHOI ,  Seon Mi KIM

IPC: G01K11/00

Abstract: The present invention relates to a temperature-change sensing substrate comprising a self-healing polyurethane polymer. More specifically, the present invention relates to a temperature-change sensing substrate having a self-healing polyurethane polymer matrix and a plurality of pores dispersed in the matrix. The temperature-change sensing substrate according to the present invention can be applied as a temperature-change sensor for preventing the spoiling of refrigerated or frozen food and medical supplies. For example, substrate, which was opaque when stored at −60° C., −50° C., −30° C., −20° C., −10° C. and the like, becomes transparent if the temperature rises to 0° C., 10° C., 20° C., 30° C. and the like, and thus a temperature-change sensor capable of checking storage conditions through a change in light transmittance can be provided.

公开(公告)号：US20200157271A1

公开(公告)日：2020-05-21

申请号：US16618582

申请日：2018-07-11

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Sung Yeon HWANG ,  Jeyoung PARK ,  Dong Yeop OH ,  Jong Geon JEGAL ,  Seon Mi KIM ,  Hyeon Yeol JEON

IPC: C08G18/38 ,  C08G18/48 ,  C08G18/66 ,  C08G18/75 ,  C08G18/24 ,  C08G18/73 ,  C08J5/18 ,  C08G18/72

Abstract: A self-restoring polyurethane-based polymer obtained by polymerization of a composition containing an aromatic disulfide diol represented by Chemical Formula, HO—Ar1—S—S—Ar2—OH, an alicyclic polyisocyanate, and a polyol. Ar1 and Ar2 each are independently a substituted or unsubstituted C6-C30 arylene group. The composition satisfies Equation, 0.1≤M[disulfide]/M[OH]. M[disulfide] is a total mole number of the aromatic disulfide diol in the composition, and M[OH] is a total mole number of the aromatic disulfide diol and the polyol in the composition.