Black perylene-based pigment and process for producing the same
US7083675B2 · kind B2 · utility
10Cited by
9References
4Claims
0Family size
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Key dates
| Filing date | Jan 23, 2004 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Jan 23, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0034
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A black perylene-based pigment comprising a solid solution obtained by calcining a mixture of at least two compounds selected from the group consisting of anhydrides of perylene tetracarboxylic acid, diimide derivatives of perylene tetracarboxylic acid and diimide derivatives of perylene diiminodicarboxylic acid, exhibits an excellent blackness, an excellent heat resistance and an excellent weather fastness as well as a high resistance and a high safety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.