Naphthol as colorants and their use
US7819969B2 · kind B2 · utility
2Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 28, 2006 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | May 2, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A Naphthol AS colorant according to Formula (I):wherein R1, R2, R3, R4 and R5 are each independently selected from the group consisting of hydrogen, methyl, ethyl, halogen, methoxy, ethoxy, —CONH-phenyl and —NO2, wherein the group Q is a group including two carboxyl groups or salts thereof. The Naphthol AS colorant may also be used for making colored layers and non-aqueous pigment dispersions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.