Hair dyeing composition and process

US4321053A · kind A · utility

Assignee

• Wella GmbH · DE

Inventors

• Eugen Konrad · Darmstadt, DE
• Herbert Mager · Freiberg, DE

Key dates

• Filing date: Jan 25, 1980
• Grant date: Mar 23, 1982
• Expiry date: Jan 25, 2000

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K8/347
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A process for preparing a composition, a composition and a process for oxidative dyeing of hair are disclosed. The composition comprises at least one n,5-dihydroxy-1,2,3,4-tetrahydro-naphthalene having the general formula ##STR1## wherein n represents a number from 1,2,3, or 4, and which n,5-dihydroxy-1,2,3,4-tetrahydronaphthalene can be present as such or as a salt of an organic or inorganic base and which n,5-dihydroxy-1,2,3,4-tetrahydro-naphthalene serves as a coupling compound; and at least one developer employed in hair dyeing. Intense and red tinge free blue colorations can be obtained.