Use of blends of mannich acrylamide polymers and dimethyldiallylammonium halide polymers for flocculating enzyme broth streams
US4997759A · kind A · utility
7Cited by
2References
10Claims
0Family size
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Inventors
Key dates
| Filing date | Feb 5, 1990 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Feb 5, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N9/50
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Blends of Mannich acrylamide polymers and dimethyldiallylammonium halide polymers have been found to be superior flocculants for enzyme broth streams yielding higher solid compaction and greater supernatant clarities than the use of either polymer alone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.