Noxell Corporation

Heike Gertrud Abel

Markus Speckbacher

Armin Osan

Ingo Reinhold Weber

Garry Steven Garrett

Bryan Patrick Murphy

John Michael Gardlik

A process for the preparation of 2-substituted-1,4-benzenediamines, a cosmetically acceptable salt thereof, or mixture thereof. The process according to the present invention is a particularly cost effective process in that it avoids sophisticated chemical steps which requires special equipment or expensive catalysts and in that it comprises a recycling step of one of the starting materials, namely the 2-substituted aniline.

Process for the preparation of 2-substituted-1,4-benzenediamines and salts thereof

A telescoping process for the preparation of 2-methoxymethyl-p-phenylenediamine, a cosmetically acceptable salt thereof, or mixture thereof. The process according to the present invention is a particularly cost effective process in that it avoids sophisticated chemical steps which requires special equipment or expensive catalysts and in that it comprises a recycling step of one of the starting materials, namely 2-methoxymethylaniline.

Telescoping synthesis of 2-methoxymethyl-p-phenylenediamine

A telescoping process for the preparation of 2-methoxymethyl-p-phenylenediamine, a cosmetically acceptable salt thereof, or mixture thereof. The process according to the present invention is a particularly cost effective process in that it avoids sophisticated chemical steps which requires special equipment or expensive catalysts and in that it comprises a recycling step of one of the starting materials, namely 2-hydroxymethylaniline.

Telescoping synthesis of 2-methoxymethyl-P-phenylenediamine

A compound of formula (I) or (II) or (III): wherein R, R, R, R', R&#x2033; and R&#x2033;&#x2032; are as defined herein. This compound can be used in a composition for the dyeing of fibers.

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Eiterfeld, Germany

Heike Gertrud Abel