Method for producing halogenated organic pigment, halogenated organic pigment obtained by the production method, and colored composition comprising the same
US10155867B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 25, 2014 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | Jul 11, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/027
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for producing a halogenated organic pigment comprising a halogenation step of halogenating an organic pigment with a halogenating agent, wherein the halogenating agent comprises one or more N-haloimide compounds selected from the group consisting of trichloroisocyanuric acid, a metal salt of dichloroisocyanuric acid, tribromoisocyanuric acid, and a metal salt of dibromoisocyanuric acid. According to the present invention, a method for producing a halogenated organic pigment which does not use high toxic raw materials, does not generate a large amount of unfavorable by-products such as hydrogen halide gas and succinimide, and is excellent in terms of safety and productivity can be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.