Color-changing composition and material
US8754005B2 · kind B2 · utility
3Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2012 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Nov 9, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/422
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present disclosure relates to a color-changing composition and to a substrate having the color-changing compositions disposed thereon. The color-changing composition includes a leuco dye, a color-developer and a desensitizer. The color-changing composition changes from a colorless or largely colorless composition to color upon being wetted with an aqueous liquid. The color-changing composition remains colorless or largely colorless prior to exposure to high relative humidity conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.