Process for the production of ink concentrates
US5964929A · kind A · utility
6Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1996 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Nov 13, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0023
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of an ink concentrate which comprises PA1 (a) milling a crude metal phthalocyanine to reduce the particle size thereof, thereby forming a modified crude metal phthalocyanine and PA1 (b) kneading a mixture of the modified crude metal phthalocyanine together with an ink vehicle comprising one or more ink solvents, the metal phthalocyanine being present in an amount of 20 to 80% by weight of the kneaded mixture, to give an ink concentrate containing the metal phthalocyanine in pigmentary form dispersed in the ink vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.