Hair-dyeing preparations

US4900325A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• David Rose · Hilden, DE
• Edgar Lieske · Düsseldorf, DE
• Norbert Maak · Neuss, DE
• Horst Hoeffkes · Goldkronach, DE

Key dates

• Filing date: Aug 26, 1988
• Grant date: Feb 13, 1990
• Expiry date: Aug 26, 2008

Classification

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

Abstract

Hair-dyeing compositions containing oxidation dye precursors and a carrier contain coupler components corresponding to the formula: ##STR1## wherein R.sup.1 is selected from the group consisting of hydrogen, a C.sub.1 -C.sub.4 alkyl group or a halogen atom; R.sup.2 and R.sup.3 independently of one another are selected from the group consisting of hydrogen, C.sub.1 -C.sub.4 alkyl groups or C.sub.2 -C.sub.4 hydroxyalkyl groups, or together with the nitrogen atom, form a morpholine, piperidine, pyrrolidine or piperazine ring; and R.sup.4 is selected from the group consisting of hydrogen or a --NR.sup.2 R.sup.3 group; or salts thereof. The composition also contains typical developer components. The compounds are particularly suitable as red couplers for developers of the 2,4,5,6-tetraaminopyrimidine type, including derivatives thereof.