Pigments treated with organosulfonic compounds
US6646037B1 · kind B1 · utility
13Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Jul 31, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/80
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A treatment for pigments is provided. This treatment, which uses certain organosulfonic compounds, imparts improved physical and chemical qualities including lacing resistance, improved dispersion and decreased chemical reactivity when these treated pigments are incorporated into polymeric matrices. The addition of organosulfonic compounds may flexibly be incorporated into known processes at varying points, and are preferably added downstream of any filtering steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.