Paper making processes using enzyme and polymer combinations
US6939437B1 · kind B1 · utility
9Cited by
15References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2000 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Jul 10, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/455
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Methods of making paper or paperboard are described. In one method, at least one cellulytic enzyme composition and at least one cationic polymer composition are introduced to a paper making pulp at about the same time to form a treated pulp. The pulp may also be treated with at least one cationic starch. The resulting pulp is formed into a sheet of pulp. Other paper making processes are also described. A paper making apparatus is also described for carrying out the methods. Paper and paperboard made according to the methods are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.