Manufacture of resin extended pigments
US4478968A · kind A · utility
19Cited by
12References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1983 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | Apr 6, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B48/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing a resin extended pigment from crude pigment is disclosed. The process involves dry premilling the crude pigment either with or without the resin followed by comilling the premilled pigment with the resin in the presence of water under alkaline conditions. Preferably an organic liquid which wets the resin and the pigment and can improve the crystallinity of the pigment is present in the water milling step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.