Pulp waste color removal with diallyl dimethyl ammonium chloride copolymers
US5209854A · kind A · utility
11Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1992 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Jun 29, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/928
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Diallyl dimethyl ammonium chloride copolymers are effective in removing color from paper mill wastes when anionic vinyl monomers are used as the co-monomers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.