Process for the electrochemical reductive bleaching of lignocellulosic pulp
USRE32825E · kind E · reissue
0Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Jun 17, 2007 |
Classification
- Technology area (CPC —)General
Abstract
Reductive bleaching of lignin containing pulps employing polydentate ligand complexes of dipositive vanadium, chromium and titanium. High brightness pulps with good reversion stability are obtained. The process is essentially polution free as the reduced complexes can be repeatedly regenerated electrochemically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.