N-phenylaminopyrazole derivatives as well as composition and process for the dyeing of hair

US5430159A · kind A · utility

Assignee

• Wella GmbH · DE

Inventors

• Hans Neunhoeffer · Mühltal, DE
• Stefan Gerstung · Reinheim, DE
• Thomas Clausen · Alsbach, DE
• Wolfgang Balzer · Alsbach, DE

Key dates

• Filing date: May 9, 1994
• Grant date: Jul 4, 1995
• Expiry date: May 9, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D231/38
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The hair dye composition includes at least one N-phenylaminopyrazole compound of the formula (V) ##STR1## wherein R.sup.1 is hydrogen, an alkyl group having from one to four carbon atoms or a hydroxyalkyl group having from two to four carbon atoms; R.sup.2 and R.sup.3 are each independently either a hydrogen, an amino groups or an alkyl group having from one to four carbon atoms; and R.sup.4 is hydrogen, an alkyl group having from one to four carbon atoms, an alkoxy group having from one to four carbon atoms or a halogen; and at least one conventional ingredient for hair dye compositions selected from the group consisting of emollients; preservatives; perfume oils; solvents; anionic, cationic, amphoteric and nonionic surfactants; thickeners; starch derivatives; cellulose derivatives; petrolatum; paraffin oil; fatty acids; conditioners; lanolin derivatives; cholesterol; pantothenic acid and betaines.