Method for preparing high sensitivity temperature sensitive reversible color-changing microcapsule
US11970620B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2022 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Nov 9, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0097
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The disclosure belongs to the technical field of material science, and particularly relates to a method for preparing a high sensitivity temperature sensitive reversible color-changing microcapsule. According to the method, a series of novel fluorane dyes are designed and synthesized, the color-changing performance can be achieved without a color developing agent, the fluorane dyes are compounded with a phase change material according to a certain proportion, a series of two-component reversible temperature sensitive color-changing dyes are prepared, and then a two-component reversible thermochromic microcapsule with good color performance and color-changing response performance is prepared by adopting a solvent evaporation method. The two-component reversible thermochromic microcapsule provided by the disclosure can effectively alleviate the color lag phenomenon of a traditional three-component thermochromic capsule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.