Keratinous fiber dye composition containing a 2-substituted
申请人:Kao Corporation
公开号:US05334225A1
公开(公告)日:1994-08-02
A keratinous fiber dye composition comprising a developer and a coupler, wherein the coupler is a 2-substituted amino-5-alkylphenol derivative represented by the following formula (1): ##STR1## wherein the all symbols are defined in the disclosure, is disclosed. The keratinous fiber dye composition imparts a color tone of a high chroma and is excellent in coloring power and fastness.
Cationic a -acylaminophenols, their use as coupler for oxidation dyeing, compositions containing them, and dyeing methods
申请人:L'Oreal S.A.
公开号:US06455737B1
公开(公告)日:2002-09-24
The invention relates to novel cationic 2-acylaminophenols of formula (I) comprising at least one cationic group, to their use as couplers for the oxidation dyeing of keratin fibers, and in particular of human keratin fibers such as the hair, to oxidation dye compositions containing them in combination with at least one oxidation base, and to oxidation dyeing processes using them.
A dye composition for a keratinous fiber comprising a developer and a coupler, wherein the coupler is a 2- substituted amino-5-alkylphenol derivative represented by the following formula (1):
wherein the all symbols are defined in the disclosure, is disclosed. The dye composition imparts a color tone of a high chroma and is excellent in coloring power and fastness.
Composition de teinture d'oxydation des fibres kératiniques et procédé de teinture mettant en oeuvre cette composition
申请人:L'OREAL
公开号:EP1093789A1
公开(公告)日:2001-04-25
L'invention a pour objet une composition pour la teinture d'oxydation des fibres kératiniques, et en particulier des fibres kératiniques humaines telles que les cheveux comprenant, dans un milieu approprié pour la teinture, au moins une base d'oxydation choisie parmi certains dérivés substitués du para-aminophénol et leurs sels d'addition avec un acide, et au moins un coupleur choisi parmi des dérivés 2-substitués d'amino-5-alkylphénols, ainsi que le procédé de teinture mettant en oeuvre cette composition.
Methods for preparing an octane-boosting fuel additive having the following formula: are provided. In a first aspect, the method may comprise carrying out the following reaction: (i), (ii) In a second aspect, the method may comprise: (1) preparing the fuel additive; and (2) purifying the product of step (1) by: (a) dissolving the fuel additive in a water-insoluble solvent to form a solution; (b) washing the solution with water; and (c) separating the fuel additive product from the water-insoluble solvent using distillation. Steps (i) and (1) of the methods are carried out in the presence of butylated hydroxytoluene.