Solid solution of quinacridone and ink composition containing same
US12104063B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2019 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Jun 14, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/322
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An object to be achieved by the present, invention is to provide a quinacridone pigment having hue that is yellowish and clear and having excellent storage stability, wherein the quinacridone pigment can be advantageously used in an ink-jet ink and the like. Provided is a quinacridone solid solution pigment comprising at least C. I. Pigment Violet 19 and C. I. Pigment Red 122, wherein the ratio of a diffraction peak intensity at a diffraction angle 2θ of 14.8±0.2° to a diffraction peak intensity at a diffraction angle 2θ of 11.9±0.2° is 1.20 or less, as measured by X-ray diffractometry with respect to the quinacridone solid solution pigment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.