Bleaching aid
US3956165A · kind A · utility
11Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Dec 9, 1994 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C9/1036
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to pulp bleaching processes, and in particular compositions for use in the bleaching process to enhance the efficiency of the process. It was discovered that if a low molecular weight water soluble polymer of acrylic acid, or water soluble salt thereof was added either alone or together with a carboxymethyl cellulose to the bleaching solution, that less bleaching solution was required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.