Process for surface colouration of paper
US8012221B2 · kind B2 · utility
0Cited by
13References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2006 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | May 21, 2027 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/28
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a process for the surface coloration of paper characterized in that, in a first step, the paper surface is treated with a water soluble dye and, subsequently, in a second step, the paper surface is treated with a fixing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.