Dioxazine pigment and colorant
US11965099B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2022 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Nov 2, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/037
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide a dioxazine pigment having excellent fluidity. More specifically, an object of the present invention is to provide a dioxazine pigment in which practically sufficient fluidity is attained in both (1) initial viscosity and (2) storage stability when the dioxazine pigment is used in a printing ink application. The object is attained by providing a dioxazine pigment having a contact angle with respect to water according to an infiltration rate method in a range of 30° to 75°, and a contact angle with respect to 1-bromonaphthalene according to an infiltration rate method in a range of 30° to 75°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.