135664-63-0Relevant academic research and scientific papers
One step hair coloring compositions using salts
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, (2008/06/13)
A hair coloring composition comprising the following two compositions which are mixed just prior to application to the hair: (a) a composition comprising a water-soluble peroxygen oxidizing agent; and (b) a composition comprising one or more oxidative hair coloring agents selected from the group consisting of an aromatic diamine, an amino phenol, a naphthol, a polyhydric phenol, a catechol and mixtures thereof; wherein the composition comprising one or more oxidative hair coloring agents further comprises al least one water soluble carbonate releasing salts; and optionally a water soluble ammonium salt, is described.
Enhanced color deposition for hair with sequestering agents
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, (2008/06/13)
Hair coloring compositions which comprise: (A) non-nitrogenous chelating agents from the group consisting of polyphosphate; phosphonates; hydroxycarboxylates; polyacrylates; zeolite; and mixtures thereof; (B) an oxidative dye primary intermediate; and (C) an oxidative dye coupler; (D) and water are described. The present invention also relates to a method for coloring hair which comprises contacting said hair with a hair coloring composition as described above.
Process for the two-stage oxidation dyeing of keratin fibers with a manganese complex or salt and a 4-substituted 1-naphthol, and dyeing kit
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, (2008/06/13)
A process for the two-stage oxidation dyeing of keratin fibers by applying to the keratin fibers: in a first stage, at least one composition A containing at least one manganese salt and/or a manganese complex, in a second stage, at least one composition B having a pH of greater than or equal to 6, and resulting from the extemporaneous mixing of at least one composition B1 containing at least one 4-substituted 1-naphthol and at least one composition B2 containing at least one oxidizing agent, and corresponding multi-compartment dyeing kit.
Measurement of the Donor Strength of Substituted 1-Naphthols
Laatsch, Harmut,Sigel, Christoph,Kral, Andreas
, p. 393 - 400 (2007/10/02)
The oxidation potential of various substituted naphthols is available by cyclovoltammetry.The donor strength of substituents on the oxidation potential may be explained on the base of substituent increments.When correlating the oxidation potential with the transition energy of charge transfer complexes with TCNE, 1-naphthols with 8-alkoxy substituents and naphthols without oxygen in position 8 are giving different correlation curves.The experimental values correlate well with semiempirically calculated HOMO energies.Our measurements allow to predict the oxidation potentials of hitherto unknown substituted 1-naphthols with high probality.Thus, it may be possible to synthesize 1-naphthols with a defined oxidation potential. - Key Words: Cyclovoltammetry / Charge-transfer complexes / HOMO energy / Naphthols
