Process for the delignification of a chemical paper pulp with organic peroxy acid
US5431781A · kind A · utility
22Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1994 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Jun 22, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C9/166
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Process for the delignification of a chemical paper pulp by means of an organic peroxy acid, according to which the raw pulp arising from the cooking operation is treated with an aqueous solution of this organic peroxy acid, whose hydrogen peroxide content does not exceed 20% of the weight of the peroxy acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.