Dye composition using a phenol-derived coupler in a medium rich in fatty substances, processes and devices

US9993411B2 · kind B2 · utility

Assignee

• L'Oreal · FR

Inventors

• Alain Lagrange · Coupvray, FR
• Marie Mignon · Paris, FR

Key dates

• Filing date: Jun 25, 2014
• Grant date: Jun 12, 2018
• Expiry date: Jun 25, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/591
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present invention relates to a composition for dyeing keratin fibres, comprising: at least one fatty substance, at least one surfactant; at least one oxidation base, at least one coupler of formula (B3) below and also salts thereof, optical and geometrical isomers and tautomers thereof, and hydrates thereof: (B3) in which; R1, R3, R5 represent a hydrogen; a C1-C8 alkyl or alkenyl, —SR or —OR; a (C1-C4)alkylcarbonyl; hydrocarbonyl; sulphonic or carboxylic acid; R2, R4 represent a hydrogen, a C1-C8 alkyl or alkenyl; —OR′; two groups chosen from R1, R2, R3, R4, R5 and borne by adjacent carbon atoms may form, together with said carbon atoms, a ring or a heterocycle which is optionally substituted, and which is optionally interrupted with one or more carbonyl groups; at least one of the radicals R1, R3, R5 representing a hydrogen; at least one of the radicals R2 or R4 denoting a group —OR′ with R′ representing a C1-C8 alkyl or alkenyl, it being possible for this radical to form, with the carbon atom bearing it, one of the neighbouring carbon atoms and its substituent, a heterocycle; at least one alkalinizing agent; the fatty substance content representing in total at least 25% by we…