Process for removal of lignin from lignocellulosic material
US6752904B2 · kind B2 · utility
2Cited by
15References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2001 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Mar 2, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C1/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a process for the removal of lignin from lignocellulose containing material comprising treating the lignocellulose containing material prior to a high-yield pulping process with a delignifying gas comprising gaseous compounds comprising at least one oxygen atom such as chlorine dioxide containing gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.