Clairol Incorporated

Bristol-myers Squibb Compnay

The Procter Gamble Company

Mu-III Lim

Yuh-Guo Pan

Linas R Stasaitis

Margaret Ann Popp

James S Anderson

Michael Y Wong

Couplers for use in oxidative hair dyeing

Coupler for use in oxidative hair dyeing

Primary intermediates for oxidative coloration of hair

The novel primary intermediate, 1-(5-amino-2-hydroxyphenyl)ethane-1,2-diol and a method for producing same, are disclosed. The novel intermediate can be employed as a replacement for p-aminophenol in oxidation dye formulations.

Substituted p-aminophenol, process of preparation and use in dyeing hair

The invention provides compositions and methods containing novel bis-(2,4-diaminophenoxy)benzene coupling compounds, and cosmetically acceptable salts thereof, for use with conventional primary intermediate dye compounds and oxidizing agents for the oxidative coloring of human hair. The compositions of the invention may also contain other components typically used in oxidative hair dye preparations to impart intense and lasting coloration to hair.

BIS-(2-4-diaminophenoxy) benzenes and their use as coupling components

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Trumbull, CT, United States of America

Mu-III Lim