Composition and method for water clarification
US5643462A · kind A · utility
13Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1994 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | May 20, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D7/71
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Tannin containing polymers, their method of production and methods of using as water treatment agents are disclosed. The tannin containing polymers comprise copolymers of tannin and a cationic monomer. Another embodiment comprises tannin containing polymers of tannin, cationic monomer and at least one monomer selected from the group consisting of an anionic monomer and a nonionic monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.