Amphoteric stilbene composition
US7789917B2 · kind B2 · utility
0Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2008 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Aug 5, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24934
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A brightening system includes a substrate and an amphoteric stilbene composition established on the substrate. The amphoteric stilbene composition includes a predetermined amount of at least one of 4,4′-diamino-2,2′-stilbene disulfonic acid, biarylsulfonate-4,4′-diamino-2,2′-stilbene disulfonic acid, biaryldisulfonate-4,4′-diamino-2,2′-stilbene disulfonic acid, derivatives thereof, salts thereof, and mixtures thereof; and a fixing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.