Semi-polar hyperdispersants for pigment bases
US4971626A · kind A · utility
6Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Sep 14, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D233/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Quaternized oligourethanes, useful as dispersing agents in preparing high-solids pigment concentrates for use in manufacturing inks, especially inks intended for use in gravure and packaging applications. The novel oligourethanes are prepared by reacting an appropriate ester or alcohol with a hydroxyethylimidazoline and polyisocyanate followed by quaternization with acids or alkyl derivatives of acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.