Patent application number | Description | Published |
20130212810 | 1-Hexzl-1H-Pyrazole-4,5-Diamine Hemisulfate, and Its Use in Dyeing Compositions - 1-hexyl-1H-pyrazole-4,5-diamine hemisulfate, as represented in formula (IX-a), and its use in oxidative dyeing composition. This pyrazole salt was found to combine good stability as raw material and good shade intensity with a range of common couplers when formulated in hair dyeing composition. | 08-22-2013 |
20130217891 | Telescoping Synthesis of 5-Amino-4-Nitroso-1-Alkyl-1H-Pyrazole Salt - A telescoping synthesis of 5-amino-4-nitroso-1-alkyl-1H-pyrazole salt derivatives of formula (I), the compound (I) itself, and its use as an intermediate in the fabrication of 1-alkyl-4,5-diaminopyrazole salts of general formula (IX). The compounds of formula (IX) can be used as precursor dyes in oxidative hair dye compositions. | 08-22-2013 |
20140289973 | 1-Hexyl-1H-Pyrazole-4,5-Diamine Hemisulfate, and Its Use in Dyeing Compositions - 1-hexyl-1H-pyrazole-4,5-diamine hemisulfate, as represented in formula (IX-a), and its use in oxidative dyeing composition. This pyrazole salt was found to combine good stability as raw material and good shade intensity with a range of common couplers when formulated in hair dyeing composition. | 10-02-2014 |
20160122284 | New 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-methoxymethylaniline. | 05-05-2016 |
20160122285 | Process for the preparation of 2-substituted-1,4-benzenediamines and salts thereof - 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. | 05-05-2016 |
20160122286 | New 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. | 05-05-2016 |
20160122546 | AZO DIRECT DYES AND METHOD FOR DYEING HAIR USING THESE DYES - A compound of formula (I) or (II) or (III): | 05-05-2016 |