Deinking formulation for flexographic inks
US5417807A · kind A · utility
10Cited by
12References
17Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 27, 1993 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | May 27, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The removal of hydrophilic flexographic inks from a pulp fiber slurry in a flotation or flotation/wash deinking system is accomplished by using a combination of (a) a fatty acid or salt thereof, (b) a rosin acid or salt thereof, and (c) a non-ionic or anionic surfactant along with water having a hardness of about 80 to 500 ppm Ca.sup.+2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.