Invention Grant
US09554977B2 Triaromatic azomethine direct dyes, dye composition comprising at least one such dye, method of implementation and use
有权
色氨基偶氮甲碱直接染料，染料组合物包含至少一种这样的染料，实施和使用方法
- Patent Title: Triaromatic azomethine direct dyes, dye composition comprising at least one such dye, method of implementation and use
- Patent Title (中): 色氨基偶氮甲碱直接染料，染料组合物包含至少一种这样的染料，实施和使用方法
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Application No.: US14365217Application Date: 2012-12-13
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Publication No.: US09554977B2Publication Date: 2017-01-31
- Inventor: Stephane Sabelle , Madeleine Leduc , Olivier Guerard
- Applicant: L'OREAL
- Applicant Address: FR Paris
- Assignee: L'OREAL
- Current Assignee: L'OREAL
- Current Assignee Address: FR Paris
- Agency: The Marbury Law Group, PLLC
- Priority: FR1161576 20111213
- International Application: PCT/EP2012/075383 WO 20121213
- International Announcement: WO2013/087768 WO 20130620
- Main IPC: A61Q5/10
- IPC: A61Q5/10 ; A61K8/41 ; C09B55/00 ; A61Q5/06 ; A61K8/34 ; A61K8/35 ; A61K8/42
Abstract:
The present invention relates to azomethine-type direct dyes having a triaromatic unit of formula (I) below: and also the use thereof for dyeing keratin fibers, in particular human keratin fibers such as the hair. The invention also relates to a composition for dyeing keratin fibers, comprising, in a medium suitable for dyeing, such direct dyes. Another subject of the present invention is a method for dyeing keratin fibers using said dye composition. Finally, the present invention also relates to precursors of these direct dyes.
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