Oxidative dyeing compositions comprising an 1-hexyl/heptyl-4,5-diaminopyrazole and a 2-aminophenol and derivatives thereof

US8444709B2 · kind B2 · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Muill Lim · Chuncheon-si, KR
• Bryan Patrick Murphy · Loveland, US
• Margaret Popp · Sharonville, US
• Richard Matthew Charles Sutton · Cincinnati, US
• Guiru Zhang · Lebanon, US

Key dates

• Filing date: Feb 16, 2012
• Grant date: May 21, 2013
• Expiry date: Feb 16, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K8/494
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

An oxidative dyeing composition comprising a 1-hexyl-4,5-diaminopyrazole compound or a 1-heptyl-4,5-diaminopyrazole compound of formula (I) in combination with a 2-aminophenol compound of formula (II):wherein R1, R2, R3, R4, R5, R6 and R7 are as defined herein and a=1 or 2.The composition provides good hair color intensity together with good wash and bleeding fastness.