- Patent Title: Temperature detection material, temperature detection ink using same, temperature indicator, method for manufacturing temperature detection material, and product management system
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Application No.: US16469545Application Date: 2017-11-17
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Publication No.: US11572486B2Publication Date: 2023-02-07
- Inventor: Kohhei Aida , Shunsuke Mori , Masahiro Kawasaki , Kotaro Araya , Hiroshi Sasaki
- Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
- Current Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Crowell & Moring LLP
- Priority: JPJP2016-241854 20161214
- International Application: PCT/JP2017/041430 WO 20171117
- International Announcement: WO2018/110200 WO 20180621
- Main IPC: G01K11/16
- IPC: G01K11/16 ; G01K11/12 ; C09K9/02 ; G01K11/06 ; B41M5/00 ; C09D11/50 ; C09D11/037 ; C09D11/12 ; C09D11/17 ; C09D11/328 ; C09D11/34 ; C09D11/03
Abstract:
An object of the present invention is to provide a temperature detection material that can be manufactured through a simple step and is excellent in handleability. In order to solve the above problem, the temperature detection material according to the present invention includes a temperature-indicating material including a leuco dye, a color developer, and a color eraser and a matrix material; and is characterized in that the matrix material is in a solid state, a melting point of the matrix material is higher than a melting point of the temperature-indicating material, and a phase separation structure in which the temperature-indicating material disperses in the matrix material is formed.
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