Pigment dispersions containing styrenated and sulfated phenol alkoxylates
US6736892B2 · kind B2 · utility
7Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Jul 16, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/19
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides sulfated and carboxymethylated surfactants and dispersants produced by reacting a styrenated phenol alkoxylate with sulfamic acid and then neutralizing with a base such as ammonium hydroxide. The instant invention also provides pigment dispersion comprising: (a) a pigment; and (b) a dispersant based on sulfated and carboxymethylated styrenated phenol alkoxylates. Carbon black dispersions are also provided containing carbon black and the dispersants of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.