Synthesis of tetraazapentamethine compounds, and processes...

Details Synthesis of tetraazapentamethine compounds, and processes... Synthesis of tetraazapentamethine compounds, and processes...

2007-10-30

2007-10-30

Elhilo, Eisa (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

C008S407000, C008S565000, C008S567000, C008S568000, C008S570000, C008S571000, C008S572000, C008S573000, C008S574000, C008S654000, C008S655000, C546S184000, C548S318100, C548S400000, C132S202000, C132S208000

Reexamination Certificate

active

11009058

ABSTRACT:
The present disclosure relates to processes for synthesizing tetraazapentamethine compounds that comprise reacting at least one compound of azine type with at least one oxidizing agent. The disclosure also relates to processes for dyeing keratin fibers, for example human keratin fibers, that comprise using such synthetic processes.

REFERENCES:
patent: 3173905 (1965-03-01), Sureau et al.
patent: 2004/0127692 (2004-07-01), David et al.
patent: 1 378 544 (2004-01-01), None
patent: 1 291 555 (1962-04-01), None
STIC Search Report dated Dec. 29, 2006.
Huenig S. et al., “Tetraaza-Pentamethinfarbstoffe” Justus Liebigs Annalen Der chemie, Verlag Chemie GMBH, Weinheim, DE, vol. 667, 1963, pp. 72-85, XP 002237035.
English language Derwent Abstract of EP 1 378 544, Jan. 7, 2004.

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