Direct biological bleaching of hardwood kraft pulp with the fungus Coriolus versicolor
US4830708A · kind A · utility
11Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Nov 30, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/911
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is provided a process for bleaching kraft hardwood pulp wherein the bleaching is done utilizing the fungus Coriolus versicolor wherein the pulp is treated with the fungus at a temperature and for a time sufficient for the bleaching to occur. The pulp may subsequently be sterilized after bleaching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.