Process for producing &bgr;-phase copper phthalocyanine pigment
US6379450B1 · kind B1 · utility
5Cited by
14References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 8, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Mar 8, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0026
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of &bgr; phase copper phthalocyanine pigment which includes dry grinding crude copper phthalocyanine in the absence of a grinding aid to obtain a crude mill; and conditioning the crude mill in about 5 to 50 wt. % based on the weight of the crude mill of a conditioning solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.