Laminated color forming composition
US9505254B2 · kind B2 · utility
3Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2012 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Dec 12, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B9/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A substrate coated with a markable ink formulation, comprising a thermo activated acid generator (TAG) and a halochromic leuco dye. The thermo activated acid generator is selected form the group consisting of: an amine salt of an organic metal compound comprising boron or silicone and amine neutralized polyalkylnaphthalene polysulphonic acid derivatives. Further, the substrate is covered by a thermoplastic polymer layer, such that the ink formulation is situated between the substrate and the thermoplastic polymer layer and/or in the thermoplastic polymer layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.