Electrochemical process for bleaching wood pulp using chlorate and a redox catalyst
US4702807A · kind A · utility
1Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1986 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | Oct 2, 2006 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C9/1021
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An electrochemical process for delignification and bleaching of pulp fibers is disclosed. The process involves the use of metallic chlorates and vanadium catalysts in the presence of an electric current to provide a pulp fiber of improved brightness and viscosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.