Pigment dispersions containing dispersants having core and arm star architecture prepared by controlled radical polymerization
US6336966B1 · kind B1 · utility
29Cited by
38References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1999 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Dec 16, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2438/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A pigment dispersion comprising pigment, an aqueous carrier selected from water and a mixture of water and at least one organic solvent, and a pigment dispersant is described. The pigment dispersant has core and arm star-type architecture, and is prepared by controlled radical polymerization, e.g., atom transfer radical polymerization, using (i) arm-core, (ii) arm-core-arm, (iii) core-arm, or (iv) concurrent core and arm methods. The arms of the pigment dispersant each have hydrophobic and hydrophilic polymeric chain segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.