Modified carbon products and inks and coatings containing modified carbon products
US5707432A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1996 |
| Grant date | Jan 13, 1998 |
| Priority date | — |
| Expiry date | Jun 14, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K9/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A modified carbon product is described which comprises carbon having attached at least one organic group. The organic group comprises a) at least one aromatic group or a C.sub.1 -C.sub.12 alkyl group and b) at least one ionic group, at least one ionizable group, or a mixture of an ionic group and an ionizable group. The aromatic group or the C.sub.1 -C.sub.12 alkyl group of the organic group is directly attached to the carbon and the organic group is present at a level of from about 0.10 to about 2.5 micromoles/m.sup.2 of the carbon used based on CTAB or t-area of the carbon or in an amount such that the modified carbon product has a residue value of more than about 5 wt %. Also described are aqueous and non-aqueous inks and coatings containing the modified carbon product. A method to increase the flow of an ink, as measured by glass plate flow, by incorporating the modified carbon product as part of the ink is also disclosed. Lastly, non-aqueous ink and coating formulations are described which contain an appropriate solvent and a modified carbon product comprising carbon having attached at least one organic group, wherein the organic group comprises a) at least one aromatic group …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.