Addition of THP or THP+ salt to pulping liquors to destroy catalase and/or catalase producing bacteria
US7214292B2 · kind B2 · utility
4Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2001 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | Mar 3, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C9/163
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Pulping liquors used in the bleaching of pulps by hydrogen peroxide, and containing catalase-producing bacteria and/or catalase enzyme are treated with tris (hydroxymethyl) phosphine or a tetrakis (hydroxymethyl) phosphonium salt to kill the bacteria and destroy the enzyme.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.