Stable color-changing ink
US9371457B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2014 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | Dec 21, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D139/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention discloses a stable color-changing ink, which includes the following components in parts by weight: 10 to 60 parts of water, 0.1 to 2 parts of a pH regulator, 0.1 to 1 part of a corrosion inhibitor, 0.1 to 3 parts of a dispersant, 0.1 to 3 parts of an emulsion type lubricant, 0.5 to 10 parts of a water soluble resin, 10 to 50 parts of a microcapsule color-changing pigment, and 0.1 to 3 parts of a thickener. The present invention achieves the stability of an ink system and the stability of the writing effect, and can be used in different application fields, involving color-changing gel inks, color-changing watercolor inks, color-changing water-based inks, color-changing medium oil inks, color-changing fountain pen inks, color-changing writing brush inks, color-changing writing brush inks, color-changing inkjet inks, anti-counterfeiting inks, high-temperature disappearing inks, and other application systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.