[EN] PREPARATION OF CATIONIC AZO COMPOUNDS<br/>[FR] PRÉPARATION DE COMPOSÉS AZOÏQUE CATIONIQUES
申请人:ECOLE POLYTECH
公开号:WO2016058964A2
公开(公告)日:2016-04-21
The present invention relates to a novel method for preparing cationic azo compounds, which preferably can be used as dyes. Further, the invention relates to novel cationic azo compounds and the use of N2O in the synthesis of azo-imidazolium dyes.
HAIR COLOURATION FORMULATION
申请人:Noxell Corporation
公开号:US20190133912A1
公开(公告)日:2019-05-09
Formulation for colouring hair having at least one coloured polymer.