Invention Application
- Patent Title: Novel heteroaromatic trinuclear black direct dyes
- Patent Title (中): 新型杂芳族三核黑色直接染料
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Application No.: US10678635Application Date: 2003-10-06
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Publication No.: US20050060815A1Publication Date: 2005-03-24
- Inventor: Sylvain Kravtchenko , Alain Lagrange , Herve David , Andrew Greaves , Nicole Bonaventure , Laurent Vidal
- Applicant: Sylvain Kravtchenko , Alain Lagrange , Herve David , Andrew Greaves , Nicole Bonaventure , Laurent Vidal
- Priority: FR0212385 20021004
- Main IPC: A61K8/49
- IPC: A61K8/49 ; A61Q5/06 ; A61K7/13
Abstract:
The invention relates to novel heteroaromatic trinuclear direct dyes, to dye compositions containing these dyes and to the process for dyeing keratin fibres using them. In particular, the invention relates to heteroaromatic trinuclear direct dyes comprising a pyridine nucleus. These novel dyes make it possible to obtain black shades that show good fastness and good stability in the dye compositions.
Information query
