Conditioning crude phthalocyanine pigments
US4448607A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1982 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Sep 20, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0035
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Crude phthalocyanine is converted from its crude state to its pigmentary form by (1) milling it with a phthalimidomethyl phthalocyanine derivative or a sulfonated phthalimidomethyl phthalocyanine derivative in the absence of any milling or grinding aid or by (2) grinding the crude phthalocyanine in the absence of any milling or grinding aid and then blending the ground material with a phthalimidomethyl phthalocyanine derivative or a sulfonated phthalimidomethyl phthalocyanine derivative. Without any additional conditioning or purification the pigment product is suitable for use in printing inks, paints, coating compositions, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.