Polymers containing hyperbranched monomers
US6784267B1 · kind B1 · utility
5Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2002 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Jan 24, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F11/147
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A water-soluble, cationic polymer comprising from about 1 to about 65 mole percent of one or more cationic monomers, from about 99 to about 35 mole percent of one or more nonionic monomers and from about 1 to about 1000 ppm, based on the total monomer content, of one or more hyperbranched monomers wherein the hyperbranched monomer contains from about 2 to about 20 allyl, vinyl, or acrylic end groups and method of dewatering sludge is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.