Colour forming composition
US8557510B2 · kind B2 · utility
3Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2009 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Nov 14, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/39
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A composition comprising i) a color forming component which is susceptible to changing color when irradiated; ii) an amine neutralised alkylaromatic sulphonic acid; and iii) a binder. Methods of marking a substrate comprising incorporating within or applying to a substrate the composition of this invention, and substrates coated with the composition, are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.