Hair dye composition

US6547834B1 · kind B1 · utility

Assignee

• KAO CORPORATION · JP

Inventors

• Kenichi Matsunaga · Darmstadt, DE
• Hajime Miyabe · Sumida, JP
• Yukihiro Ohashi · Mooka, JP
• Shintaro Totoki · Sumida, JP
• Yoshinori Saito · Nanbu, JP

Key dates

• Filing date: Mar 15, 2001
• Grant date: Apr 15, 2003
• Expiry date: Mar 15, 2021

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q5/10
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A hair dye composition containing a direct dye (1) wherein, R1, R2 represents H or a lower alkyl group, A represents a group (2) or (3) and wherein B represents a group —Z1, —NR8—Z1 or —CH=Z2.