Dispersant using kraft lignin and novel lignin derivative
US7691982B2 · kind B2 · utility
5Cited by
35References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2005 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Sep 22, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/05
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The dispersant of the present invention comprises at least one component unit derived from kraft lignin and/or its salt and at least one component unit derived from at least one water-soluble monomer. The novel lignin derivative of the present invention comprises at least one component unit derived from kraft lignin and/or its salt, at least one polyoxyalkylene chain, and at least one anionic functional group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.