Described herein is a yellow imidazolium chromophore having a structure according to Formula V.
本文描述了一种具有如下V式结构的黄色咪唑铵色团。
[EN] CATIONIC DIRECT DYES<br/>[FR] COLORANTS DIRECTS CATIONIQUES
申请人:BASF SE
公开号:WO2016146813A1
公开(公告)日:2016-09-22
The invention relates to cationic direct dyes of the formula I (1), wherein m and n are independently from each other 0 or 1, D is an aromatic or a cationic heteroaromatic group, which are further specified, K is an aromatic or heteroaromatic group, E1 and E2 are independently from each other =CH- or =N-, An is an anion and a is a number from 1 to 6 and R1 and R2 are independently from each other and further specified. The compounds show washfastness at hair-dying.
[EN] COMPOSITIONS FOR DYEING HAIR WITH CATIONIC DIRECT DYES<br/>[FR] COMPOSITIONS POUR COLORATION CAPILLAIRE AVEC COLORANTS DIRECTS CATIONIQUES
申请人:PROCTER & GAMBLE
公开号:WO2016149429A1
公开(公告)日:2016-09-22
Described herein is a hair color composition for dyeing the hair. The hair color composition includes one or more direct dye compounds and one or more additional ingredients. The one or more direct dye compounds each include a chromophore, one or two permanent cations, one to four incipient cations, and one or more hydrophobic moieties. The incipient cations are pendant to the core structure and are neutral. The one or more direct dye compounds enter the hair shaft after the hair color composition is applied to the hair. The hair color composition has a pH of from about 7 to about 11.
Described herein is a method of dyeing the hair. The method includes applying to the hair a hair color composition including one or more direct dye compounds and rinsing the hair with water. The one or more direct dye compounds each include a chromophore, one or two permanent cations, one to four incipient cations, and one or more hydrophobic moieties. The incipient cations are pendant to the core structure and are neutral. The one or more direct dye compounds enter the hair shaft after the hair color composition is applied to the hair. The hair color composition has a pH of from about 7 to about 11. The pH of the hair after rinsing is from about 3.5 to about 6. The rinsing of the hair causes one or more of the one to four incipient cations to change from neutral to positively charged inside of the hair shaft.
[EN] OXIDATIVE DYE COUPLERS WITH NOVEL AUXOCHROME SUBSTITUENTS AND AZOMETHINE DYES AND LEUCO FORMS THEREOF<br/>[FR] COUPLEURS COLORÉS OXYDANTS COMPRENANT DE NOUVEAUX SUBSTITUANTS AUXOCHROMES ET COLORANTS AZOMÉTHINIQUES ET LEURS FORMES LEUCODÉRIVÉES
申请人:COTY INC
公开号:WO2019032671A1
公开(公告)日:2019-02-14
The present invention concerns an auxochrome substituent for an oxidative dye coupler. The auxochrome substituent enables ready developer reaction with the coupler to form azomethine and leuco dyes. Manipulation of the auxochrome substituent enables a bathochromic or hypsochromic shift of the light absorbance by the azomethine dye formed with the auxochrome substituted coupler.