Process for preparation of quinacridone solid solutions
US4895949A · kind A · utility
26Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1988 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Jun 20, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0036
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing pigmentary solid solutions of at least one quinacridone derivative and the parent quinacridone compound which comprises milling the starting quinacridone materials at ambient or near ambient temperatures in the presence of an alcohol and a base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.