Method of making nanoscale particles of AZO pigments in a microreactor or micromixer
US7563318B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2008 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Jul 2, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F33/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing nanoscale azo pigment particles includes providing an organic pigment precursor that contains at least one functional moiety, providing a sterically bulky stabilizer compound that contains at least one functional group, and carrying out a chemical reaction to form a pigment composition in a microreactor or micromixer, whereby the functional moiety found on the pigment precursor is incorporated within the pigment and non-covalently associated with the functional group of the stabilizer, so as to allow the formation of nanoscale-sized pigment particles and the production of such in a microreactor under laminar or turbulent flow conditions without clogging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.