Dispersants with multiple aromatic imide anchor groups
US10308836B2 · kind B2 · utility
0Cited by
6References
20Claims
0Family size
Inventors
Key dates
| Filing date | Oct 24, 2014 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Oct 24, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/322
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymeric dispersants are disclosed that include a urethane backbone at least one pendantly attached imide group, wherein the carbonyl of the imide are chemically bonded to a single or fused aromatic ring. The aromatic ring can be substituted with various electron withdrawing or releasing groups. The dispersant also includes solvent-solubilizing chains of polyether, polyester, polyacrylate, and or polyolefin Desirably, the imide groups are derived from an imide that has two isocyanate reactive groups such that the imide is attached to the urethane backbone at two separate locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.