Optical brightening agents for high quality ink-jet printing
US9868858B2 · kind B2 · utility
0Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2014 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Mar 21, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2211/1059
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The instant invention relates to mixtures of stilbene compounds which provide superior fluorescent whitening effects when applied to the surface of ink-jet papers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.