Methods to enhance pulp bleaching and delignification using an organic sulfide chelating agent
US6702921B2 · kind B2 · utility
2Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 2001 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | May 31, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C9/147
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method to enhance brightness in Chemical and Mechanical bleached pulps comprising adding an organic sulfide chelant to the Chemical and Mechanical pulp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.